Merge pull request #872 from kubernetes-csi/dependabot/go_modules/google.golang.org/grpc-1.71.0

chore(deps): bump google.golang.org/grpc from 1.70.0 to 1.71.0

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/pborman/uuid v1.2.1
 	github.com/stretchr/testify v1.10.0
 	golang.org/x/net v0.36.0
-	google.golang.org/grpc v1.70.0
+	google.golang.org/grpc v1.71.0
 	google.golang.org/protobuf v1.36.5
 	k8s.io/api v0.28.12
 	k8s.io/apimachinery v0.28.12
@@ -24,6 +24,8 @@ require (
 	sigs.k8s.io/yaml v1.4.0
 )
 
+require go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+
 require (
 	github.com/NYTimes/gziphandler v1.1.1 // indirect
 	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230305170008-8188dc5388df // indirect
@@ -85,12 +87,12 @@ require (
 	go.etcd.io/etcd/client/v3 v3.5.9 // indirect
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.0 // indirect
-	go.opentelemetry.io/otel v1.32.0 // indirect
+	go.opentelemetry.io/otel v1.34.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.20.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.20.0 // indirect
-	go.opentelemetry.io/otel/metric v1.32.0 // indirect
+	go.opentelemetry.io/otel/metric v1.34.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.32.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.34.0 // indirect
-	go.opentelemetry.io/otel/trace v1.32.0 // indirect
+	go.opentelemetry.io/otel/trace v1.34.0 // indirect
 	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
 	go.uber.org/atomic v1.10.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
@@ -98,7 +100,7 @@ require (
 	golang.org/x/crypto v0.35.0 // indirect
 	golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 // indirect
 	golang.org/x/mod v0.23.0
-	golang.org/x/oauth2 v0.24.0 // indirect
+	golang.org/x/oauth2 v0.25.0 // indirect
 	golang.org/x/sync v0.11.0 // indirect
 	golang.org/x/sys v0.30.0 // indirect
 	golang.org/x/term v0.29.0 // indirect
@@ -106,8 +108,8 @@ require (
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.28.0 // indirect
 	google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20241202173237-19429a94021a // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20250106144421-5f5ef82da422 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20241202173237-19429a94021a // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect

go.sum

@@ -9,8 +9,8 @@ cloud.google.com/go v0.51.0/go.mod h1:hWtGJ6gnXH+KgDv+V0zFGDvpi07n3z8ZNj3T1RW0Gc
 cloud.google.com/go v0.112.0 h1:tpFCD7hpHFlQ8yPwT3x+QeXqc2T6+n6T+hmABHfDUSM=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/compute v1.24.0 h1:phWcR2eWzRJaL/kOiJwfFsPs4BaKq1j6vnpZrc1YlVg=
-cloud.google.com/go/compute/metadata v0.5.2 h1:UxK4uu/Tn+I3p2dYWTfiX4wva7aYlKixAHn3fyqngqo=
+cloud.google.com/go/compute/metadata v0.6.0 h1:A6hENjEsCDtC1k8byVsgwvVcioamEHvZ4j01OwKxG9I=
-cloud.google.com/go/compute/metadata v0.5.2/go.mod h1:C66sj2AluDcIqakBq/M8lw8/ybHgOZqin2obFxa/E5k=
+cloud.google.com/go/compute/metadata v0.6.0/go.mod h1:FjyFAW1MW0C203CEOMDTu3Dk1FlqW3Rga40jzHL4hfg=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
@@ -82,8 +82,8 @@ github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5P
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-github.com/cncf/xds/go v0.0.0-20240905190251-b4127c9b8d78 h1:QVw89YDxXxEe+l8gU8ETbOasdwEV+avkR75ZzsVV9WI=
+github.com/cncf/xds/go v0.0.0-20241223141626-cff3c89139a3 h1:boJj011Hh+874zpIySeApCX4GeOjPl9qhRF3QuIZq+Q=
-github.com/cncf/xds/go v0.0.0-20240905190251-b4127c9b8d78/go.mod h1:W+zGtBO5Y1IgJhy4+A9GOqVhqLpfZi+vwmdNXUehLA8=
+github.com/cncf/xds/go v0.0.0-20241223141626-cff3c89139a3/go.mod h1:W+zGtBO5Y1IgJhy4+A9GOqVhqLpfZi+vwmdNXUehLA8=
 github.com/container-storage-interface/spec v1.2.0/go.mod h1:6URME8mwIBbpVyZV93Ce5St17xBiQJQY67NDsuohiy4=
 github.com/container-storage-interface/spec v1.11.0 h1:H/YKTOeUZwHtyPOr9raR+HgFmGluGCklulxDYxSdVNM=
 github.com/container-storage-interface/spec v1.11.0/go.mod h1:DtUvaQszPml1YJfIK7c00mlv6/g4wNMLanLgiUbKFRI=
@@ -112,8 +112,8 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/envoyproxy/protoc-gen-validate v1.1.0 h1:tntQDh69XqOCOZsDz0lVJQez/2L6Uu2PdjCQwWCJ3bM=
+github.com/envoyproxy/protoc-gen-validate v1.2.1 h1:DEo3O99U8j4hBFwbJfrz9VtgcDfUKS7KJ7spH3d86P8=
-github.com/envoyproxy/protoc-gen-validate v1.1.0/go.mod h1:sXRDRVmzEbkM7CVcM06s9shE/m23dg3wzjl0UWqJ2q4=
+github.com/envoyproxy/protoc-gen-validate v1.2.1/go.mod h1:d/C80l/jxXLdfEIhX1W2TmLfsJ31lvEjwamM4DxlWXU=
 github.com/evanphx/json-patch v4.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/evanphx/json-patch v5.9.0+incompatible h1:fBXyNpNMuTTDdquAq/uisOr2lShz4oaXpDTX2bLe7ls=
 github.com/evanphx/json-patch v5.9.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
@@ -159,8 +159,8 @@ github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69
 github.com/golang-jwt/jwt/v4 v4.5.0 h1:7cYmW1XlMY7h7ii7UhUyChSgS5wUJEnm9uZVTGqOWzg=
 github.com/golang-jwt/jwt/v4 v4.5.0/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
-github.com/golang/glog v1.2.3 h1:oDTdz9f5VGVVNGu/Q7UXKWYsD0873HXLHdJUNBsSEKM=
+github.com/golang/glog v1.2.4 h1:CNNw5U8lSiiBk7druxtSHHTsRWcxKoac6kZKm2peBBc=
-github.com/golang/glog v1.2.3/go.mod h1:6AhwSGph0fcJtXVM/PEHPqZlFeoLxhs7/t5UDAwmO+w=
+github.com/golang/glog v1.2.4/go.mod h1:6AhwSGph0fcJtXVM/PEHPqZlFeoLxhs7/t5UDAwmO+w=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE=
@@ -332,8 +332,8 @@ github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4O
 github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
 github.com/prometheus/procfs v0.10.1/go.mod h1:nwNm2aOCAYw8uTR/9bWRREkZFxAUcWzPHWJq+XBB/FM=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
+github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
-github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
+github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
@@ -390,24 +390,26 @@ go.etcd.io/etcd/server/v3 v3.5.9/go.mod h1:GgI1fQClQCFIzuVjlvdbMxNbnISt90gdfYyqi
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
+go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
+go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.0 h1:PzIubN4/sjByhDRHLviCjJuweBXWFZWhghjg7cS28+M=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.0/go.mod h1:Ct6zzQEuGK3WpJs2n4dn+wfJYzd/+hNnxMRTWjGn30M=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.0 h1:1eHu3/pUSWaOgltNK3WJFaywKsTIr/PwvHyDmi0lQA0=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.0/go.mod h1:HyABWq60Uy1kjJSa2BVOxUVao8Cdick5AWSKPutqy6U=
-go.opentelemetry.io/otel v1.32.0 h1:WnBN+Xjcteh0zdk01SVqV55d/m62NJLJdIyb4y/WO5U=
+go.opentelemetry.io/otel v1.34.0 h1:zRLXxLCgL1WyKsPVrgbSdMN4c0FMkDAskSTQP+0hdUY=
-go.opentelemetry.io/otel v1.32.0/go.mod h1:00DCVSB0RQcnzlwyTfqtxSm+DRr9hpYrHjNGiBHVQIg=
+go.opentelemetry.io/otel v1.34.0/go.mod h1:OWFPOQ+h4G8xpyjgqo4SxJYdDQ/qmRH+wivy7zzx9oI=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.20.0 h1:DeFD0VgTZ+Cj6hxravYYZE2W4GlneVH81iAOPjZkzk8=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.20.0/go.mod h1:GijYcYmNpX1KazD5JmWGsi4P7dDTTTnfv1UbGn84MnU=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.20.0 h1:gvmNvqrPYovvyRmCSygkUDyL8lC5Tl845MLEwqpxhEU=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.20.0/go.mod h1:vNUq47TGFioo+ffTSnKNdob241vePmtNZnAODKapKd0=
-go.opentelemetry.io/otel/metric v1.32.0 h1:xV2umtmNcThh2/a/aCP+h64Xx5wsj8qqnkYZktzNa0M=
+go.opentelemetry.io/otel/metric v1.34.0 h1:+eTR3U0MyfWjRDhmFMxe2SsW64QrZ84AOhvqS7Y+PoQ=
-go.opentelemetry.io/otel/metric v1.32.0/go.mod h1:jH7CIbbK6SH2V2wE16W05BHCtIDzauciCRLoc/SyMv8=
+go.opentelemetry.io/otel/metric v1.34.0/go.mod h1:CEDrp0fy2D0MvkXE+dPV7cMi8tWZwX3dmaIhwPOaqHE=
-go.opentelemetry.io/otel/sdk v1.32.0 h1:RNxepc9vK59A8XsgZQouW8ue8Gkb4jpWtJm9ge5lEG4=
+go.opentelemetry.io/otel/sdk v1.34.0 h1:95zS4k/2GOy069d321O8jWgYsW3MzVV+KuSPKp7Wr1A=
-go.opentelemetry.io/otel/sdk v1.32.0/go.mod h1:LqgegDBjKMmb2GC6/PrTnteJG39I8/vJCAP9LlJXEjU=
+go.opentelemetry.io/otel/sdk v1.34.0/go.mod h1:0e/pNiaMAqaykJGKbi+tSjWfNNHMTxoC9qANsCzbyxU=
-go.opentelemetry.io/otel/sdk/metric v1.32.0 h1:rZvFnvmvawYb0alrYkjraqJq0Z4ZUJAiyYCU9snn1CU=
+go.opentelemetry.io/otel/sdk/metric v1.34.0 h1:5CeK9ujjbFVL5c1PhLuStg1wxA7vQv7ce1EK0Gyvahk=
-go.opentelemetry.io/otel/sdk/metric v1.32.0/go.mod h1:PWeZlq0zt9YkYAp3gjKZ0eicRYvOh1Gd+X99x6GHpCQ=
+go.opentelemetry.io/otel/sdk/metric v1.34.0/go.mod h1:jQ/r8Ze28zRKoNRdkjCZxfs6YvBTG1+YIqyFVFYec5w=
-go.opentelemetry.io/otel/trace v1.32.0 h1:WIC9mYrXf8TmY/EXuULKc8hR17vE+Hjv2cssQDe03fM=
+go.opentelemetry.io/otel/trace v1.34.0 h1:+ouXS2V8Rd4hp4580a8q23bg0azF2nI8cqLYnC8mh/k=
-go.opentelemetry.io/otel/trace v1.32.0/go.mod h1:+i4rkvCraA+tG6AzwloGaCtkx53Fa+L+V8e9a7YvhT8=
+go.opentelemetry.io/otel/trace v1.34.0/go.mod h1:Svm7lSjQD7kG7KJ/MUHPVXSDGz2OX4h0M2jHBhmSfRE=
 go.opentelemetry.io/proto/otlp v1.0.0 h1:T0TX0tmXU8a3CbNXzEKGeU5mIVOdf0oykP+u2lIVU/I=
 go.opentelemetry.io/proto/otlp v1.0.0/go.mod h1:Sy6pihPLfYHkr3NkUbEhGHFhINUSI/v80hjKIs5JXpM=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -483,8 +485,8 @@ golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAG
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.24.0 h1:KTBBxWqUa0ykRPLtV69rRto9TLXcqYkeswu48x/gvNE=
+golang.org/x/oauth2 v0.25.0 h1:CY4y7XT9v0cRI9oupztF8AgiIu99L/ksR/Xp/6jrZ70=
-golang.org/x/oauth2 v0.24.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.25.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -583,10 +585,10 @@ google.golang.org/genproto v0.0.0-20191230161307-f3c370f40bfb/go.mod h1:n3cpQtvx
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de h1:F6qOa9AZTYJXOUEr4jDysRDLrm4PHePlge4v4TGAlxY=
 google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de/go.mod h1:VUhTRKeHn9wwcdrk73nvdC9gF178Tzhmt/qyaFcPLSo=
-google.golang.org/genproto/googleapis/api v0.0.0-20241202173237-19429a94021a h1:OAiGFfOiA0v9MRYsSidp3ubZaBnteRUyn3xB2ZQ5G/E=
+google.golang.org/genproto/googleapis/api v0.0.0-20250106144421-5f5ef82da422 h1:GVIKPyP/kLIyVOgOnTwFOrvQaQUzOzGMCxgFUOEmm24=
-google.golang.org/genproto/googleapis/api v0.0.0-20241202173237-19429a94021a/go.mod h1:jehYqy3+AhJU9ve55aNOaSml7wUXjF9x6z2LcCfpAhY=
+google.golang.org/genproto/googleapis/api v0.0.0-20250106144421-5f5ef82da422/go.mod h1:b6h1vNKhxaSoEI+5jc3PJUCustfli/mRab7295pY7rw=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20241202173237-19429a94021a h1:hgh8P4EuoxpsuKMXX/To36nOFD7vixReXgn8lPGnt+o=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f h1:OxYkA3wjPsZyBylwymxSHa7ViiW1Sml4ToBrncvFehI=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20241202173237-19429a94021a/go.mod h1:5uTbfoYQed2U9p3KIj2/Zzm02PYhndfdmML0qC3q3FU=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f/go.mod h1:+2Yz8+CLJbIfL9z73EW45avw8Lmge3xVElCP9zEKi50=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -595,8 +597,8 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
 google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.29.0/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
-google.golang.org/grpc v1.70.0 h1:pWFv03aZoHzlRKHWicjsZytKAiYCtNS0dHbXnIdq7jQ=
+google.golang.org/grpc v1.71.0 h1:kF77BGdPTQ4/JZWMlb9VpJ5pa25aqvVqogsxNHHdeBg=
-google.golang.org/grpc v1.70.0/go.mod h1:ofIJqVKDXx/JiXrwr2IG4/zwdH9txy3IlF40RmcJSQw=
+google.golang.org/grpc v1.71.0/go.mod h1:H0GRtasmQOh9LkFoCPDu3ZrwUtD1YGE+b2vYBYd/8Ec=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=

vendor/go.opentelemetry.io/auto/sdk/CONTRIBUTING.md

@@ -0,0 +1,27 @@
+# Contributing to go.opentelemetry.io/auto/sdk
+
+The `go.opentelemetry.io/auto/sdk` module is a purpose built OpenTelemetry SDK.
+It is designed to be:
+
+0. An OpenTelemetry compliant SDK
+1. Instrumented by auto-instrumentation (serializable into OTLP JSON)
+2. Lightweight
+3. User-friendly
+
+These design choices are listed in the order of their importance.
+
+The primary design goal of this module is to be an OpenTelemetry SDK.
+This means that it needs to implement the Go APIs found in `go.opentelemetry.io/otel`.
+
+Having met the requirement of SDK compliance, this module needs to provide code that the `go.opentelemetry.io/auto` module can instrument.
+The chosen approach to meet this goal is to ensure the telemetry from the SDK is serializable into JSON encoded OTLP.
+This ensures then that the serialized form is compatible with other OpenTelemetry systems, and the auto-instrumentation can use these systems to deserialize any telemetry it is sent.
+
+Outside of these first two goals, the intended use becomes relevant.
+This package is intended to be used in the `go.opentelemetry.io/otel` global API as a default when the auto-instrumentation is running.
+Because of this, this package needs to not add unnecessary dependencies to that API.
+Ideally, it adds none.
+It also needs to operate efficiently.
+
+Finally, this module is designed to be user-friendly to Go development.
+It hides complexity in order to provide simpler APIs when the previous goals can all still be met.

vendor/go.opentelemetry.io/auto/sdk/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+      transformation or translation of a Source form, including but
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+
+      "Work" shall mean the work of authorship, whether in Source or
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+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
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+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
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+      of this License, Derivative Works shall not include works that remain
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
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+
+      (a) You must give any other recipients of the Work or
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+      (b) You must cause any modified files to carry prominent notices
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+      (c) You must retain, in the Source form of any Derivative Works
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+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
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+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
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+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/go.opentelemetry.io/auto/sdk/VERSIONING.md

@@ -0,0 +1,15 @@
+# Versioning
+
+This document describes the versioning policy for this module.
+This policy is designed so the following goals can be achieved.
+
+**Users are provided a codebase of value that is stable and secure.**
+
+## Policy
+
+* Versioning of this module will be idiomatic of a Go project using [Go modules](https://github.com/golang/go/wiki/Modules).
+  * [Semantic import versioning](https://github.com/golang/go/wiki/Modules#semantic-import-versioning) will be used.
+    * Versions will comply with [semver 2.0](https://semver.org/spec/v2.0.0.html).
+    * Any `v2` or higher version of this module will be included as a `/vN` at the end of the module path used in `go.mod` files and in the package import path.
+
+* GitHub releases will be made for all releases.

vendor/go.opentelemetry.io/auto/sdk/doc.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+/*
+Package sdk provides an auto-instrumentable OpenTelemetry SDK.
+
+An [go.opentelemetry.io/auto.Instrumentation] can be configured to target the
+process running this SDK. In that case, all telemetry the SDK produces will be
+processed and handled by that [go.opentelemetry.io/auto.Instrumentation].
+
+By default, if there is no [go.opentelemetry.io/auto.Instrumentation] set to
+auto-instrument the SDK, the SDK will not generate any telemetry.
+*/
+package sdk

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/attr.go

@@ -0,0 +1,58 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+// Attr is a key-value pair.
+type Attr struct {
+	Key   string `json:"key,omitempty"`
+	Value Value  `json:"value,omitempty"`
+}
+
+// String returns an Attr for a string value.
+func String(key, value string) Attr {
+	return Attr{key, StringValue(value)}
+}
+
+// Int64 returns an Attr for an int64 value.
+func Int64(key string, value int64) Attr {
+	return Attr{key, Int64Value(value)}
+}
+
+// Int returns an Attr for an int value.
+func Int(key string, value int) Attr {
+	return Int64(key, int64(value))
+}
+
+// Float64 returns an Attr for a float64 value.
+func Float64(key string, value float64) Attr {
+	return Attr{key, Float64Value(value)}
+}
+
+// Bool returns an Attr for a bool value.
+func Bool(key string, value bool) Attr {
+	return Attr{key, BoolValue(value)}
+}
+
+// Bytes returns an Attr for a []byte value.
+// The passed slice must not be changed after it is passed.
+func Bytes(key string, value []byte) Attr {
+	return Attr{key, BytesValue(value)}
+}
+
+// Slice returns an Attr for a []Value value.
+// The passed slice must not be changed after it is passed.
+func Slice(key string, value ...Value) Attr {
+	return Attr{key, SliceValue(value...)}
+}
+
+// Map returns an Attr for a map value.
+// The passed slice must not be changed after it is passed.
+func Map(key string, value ...Attr) Attr {
+	return Attr{key, MapValue(value...)}
+}
+
+// Equal returns if a is equal to b.
+func (a Attr) Equal(b Attr) bool {
+	return a.Key == b.Key && a.Value.Equal(b.Value)
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/doc.go

@@ -0,0 +1,8 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+/*
+Package telemetry provides a lightweight representations of OpenTelemetry
+telemetry that is compatible with the OTLP JSON protobuf encoding.
+*/
+package telemetry

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/id.go

@@ -0,0 +1,103 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"encoding/hex"
+	"errors"
+	"fmt"
+)
+
+const (
+	traceIDSize = 16
+	spanIDSize  = 8
+)
+
+// TraceID is a custom data type that is used for all trace IDs.
+type TraceID [traceIDSize]byte
+
+// String returns the hex string representation form of a TraceID.
+func (tid TraceID) String() string {
+	return hex.EncodeToString(tid[:])
+}
+
+// IsEmpty returns false if id contains at least one non-zero byte.
+func (tid TraceID) IsEmpty() bool {
+	return tid == [traceIDSize]byte{}
+}
+
+// MarshalJSON converts the trace ID into a hex string enclosed in quotes.
+func (tid TraceID) MarshalJSON() ([]byte, error) {
+	if tid.IsEmpty() {
+		return []byte(`""`), nil
+	}
+	return marshalJSON(tid[:])
+}
+
+// UnmarshalJSON inflates the trace ID from hex string, possibly enclosed in
+// quotes.
+func (tid *TraceID) UnmarshalJSON(data []byte) error {
+	*tid = [traceIDSize]byte{}
+	return unmarshalJSON(tid[:], data)
+}
+
+// SpanID is a custom data type that is used for all span IDs.
+type SpanID [spanIDSize]byte
+
+// String returns the hex string representation form of a SpanID.
+func (sid SpanID) String() string {
+	return hex.EncodeToString(sid[:])
+}
+
+// IsEmpty returns true if the span ID contains at least one non-zero byte.
+func (sid SpanID) IsEmpty() bool {
+	return sid == [spanIDSize]byte{}
+}
+
+// MarshalJSON converts span ID into a hex string enclosed in quotes.
+func (sid SpanID) MarshalJSON() ([]byte, error) {
+	if sid.IsEmpty() {
+		return []byte(`""`), nil
+	}
+	return marshalJSON(sid[:])
+}
+
+// UnmarshalJSON decodes span ID from hex string, possibly enclosed in quotes.
+func (sid *SpanID) UnmarshalJSON(data []byte) error {
+	*sid = [spanIDSize]byte{}
+	return unmarshalJSON(sid[:], data)
+}
+
+// marshalJSON converts id into a hex string enclosed in quotes.
+func marshalJSON(id []byte) ([]byte, error) {
+	// Plus 2 quote chars at the start and end.
+	hexLen := hex.EncodedLen(len(id)) + 2
+
+	b := make([]byte, hexLen)
+	hex.Encode(b[1:hexLen-1], id)
+	b[0], b[hexLen-1] = '"', '"'
+
+	return b, nil
+}
+
+// unmarshalJSON inflates trace id from hex string, possibly enclosed in quotes.
+func unmarshalJSON(dst []byte, src []byte) error {
+	if l := len(src); l >= 2 && src[0] == '"' && src[l-1] == '"' {
+		src = src[1 : l-1]
+	}
+	nLen := len(src)
+	if nLen == 0 {
+		return nil
+	}
+
+	if len(dst) != hex.DecodedLen(nLen) {
+		return errors.New("invalid length for ID")
+	}
+
+	_, err := hex.Decode(dst, src)
+	if err != nil {
+		return fmt.Errorf("cannot unmarshal ID from string '%s': %w", string(src), err)
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/number.go

@@ -0,0 +1,67 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"encoding/json"
+	"strconv"
+)
+
+// protoInt64 represents the protobuf encoding of integers which can be either
+// strings or integers.
+type protoInt64 int64
+
+// Int64 returns the protoInt64 as an int64.
+func (i *protoInt64) Int64() int64 { return int64(*i) }
+
+// UnmarshalJSON decodes both strings and integers.
+func (i *protoInt64) UnmarshalJSON(data []byte) error {
+	if data[0] == '"' {
+		var str string
+		if err := json.Unmarshal(data, &str); err != nil {
+			return err
+		}
+		parsedInt, err := strconv.ParseInt(str, 10, 64)
+		if err != nil {
+			return err
+		}
+		*i = protoInt64(parsedInt)
+	} else {
+		var parsedInt int64
+		if err := json.Unmarshal(data, &parsedInt); err != nil {
+			return err
+		}
+		*i = protoInt64(parsedInt)
+	}
+	return nil
+}
+
+// protoUint64 represents the protobuf encoding of integers which can be either
+// strings or integers.
+type protoUint64 uint64
+
+// Int64 returns the protoUint64 as a uint64.
+func (i *protoUint64) Uint64() uint64 { return uint64(*i) }
+
+// UnmarshalJSON decodes both strings and integers.
+func (i *protoUint64) UnmarshalJSON(data []byte) error {
+	if data[0] == '"' {
+		var str string
+		if err := json.Unmarshal(data, &str); err != nil {
+			return err
+		}
+		parsedUint, err := strconv.ParseUint(str, 10, 64)
+		if err != nil {
+			return err
+		}
+		*i = protoUint64(parsedUint)
+	} else {
+		var parsedUint uint64
+		if err := json.Unmarshal(data, &parsedUint); err != nil {
+			return err
+		}
+		*i = protoUint64(parsedUint)
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/resource.go

@@ -0,0 +1,66 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+)
+
+// Resource information.
+type Resource struct {
+	// Attrs are the set of attributes that describe the resource. Attribute
+	// keys MUST be unique (it is not allowed to have more than one attribute
+	// with the same key).
+	Attrs []Attr `json:"attributes,omitempty"`
+	// DroppedAttrs is the number of dropped attributes. If the value
+	// is 0, then no attributes were dropped.
+	DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into r.
+func (r *Resource) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid Resource type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid Resource field: %#v", keyIface)
+		}
+
+		switch key {
+		case "attributes":
+			err = decoder.Decode(&r.Attrs)
+		case "droppedAttributesCount", "dropped_attributes_count":
+			err = decoder.Decode(&r.DroppedAttrs)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/scope.go

@@ -0,0 +1,67 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+)
+
+// Scope is the identifying values of the instrumentation scope.
+type Scope struct {
+	Name         string `json:"name,omitempty"`
+	Version      string `json:"version,omitempty"`
+	Attrs        []Attr `json:"attributes,omitempty"`
+	DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into r.
+func (s *Scope) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid Scope type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid Scope field: %#v", keyIface)
+		}
+
+		switch key {
+		case "name":
+			err = decoder.Decode(&s.Name)
+		case "version":
+			err = decoder.Decode(&s.Version)
+		case "attributes":
+			err = decoder.Decode(&s.Attrs)
+		case "droppedAttributesCount", "dropped_attributes_count":
+			err = decoder.Decode(&s.DroppedAttrs)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/span.go

@@ -0,0 +1,456 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"bytes"
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"time"
+)
+
+// A Span represents a single operation performed by a single component of the
+// system.
+type Span struct {
+	// A unique identifier for a trace. All spans from the same trace share
+	// the same `trace_id`. The ID is a 16-byte array. An ID with all zeroes OR
+	// of length other than 16 bytes is considered invalid (empty string in OTLP/JSON
+	// is zero-length and thus is also invalid).
+	//
+	// This field is required.
+	TraceID TraceID `json:"traceId,omitempty"`
+	// A unique identifier for a span within a trace, assigned when the span
+	// is created. The ID is an 8-byte array. An ID with all zeroes OR of length
+	// other than 8 bytes is considered invalid (empty string in OTLP/JSON
+	// is zero-length and thus is also invalid).
+	//
+	// This field is required.
+	SpanID SpanID `json:"spanId,omitempty"`
+	// trace_state conveys information about request position in multiple distributed tracing graphs.
+	// It is a trace_state in w3c-trace-context format: https://www.w3.org/TR/trace-context/#tracestate-header
+	// See also https://github.com/w3c/distributed-tracing for more details about this field.
+	TraceState string `json:"traceState,omitempty"`
+	// The `span_id` of this span's parent span. If this is a root span, then this
+	// field must be empty. The ID is an 8-byte array.
+	ParentSpanID SpanID `json:"parentSpanId,omitempty"`
+	// Flags, a bit field.
+	//
+	// Bits 0-7 (8 least significant bits) are the trace flags as defined in W3C Trace
+	// Context specification. To read the 8-bit W3C trace flag, use
+	// `flags & SPAN_FLAGS_TRACE_FLAGS_MASK`.
+	//
+	// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
+	//
+	// Bits 8 and 9 represent the 3 states of whether a span's parent
+	// is remote. The states are (unknown, is not remote, is remote).
+	// To read whether the value is known, use `(flags & SPAN_FLAGS_CONTEXT_HAS_IS_REMOTE_MASK) != 0`.
+	// To read whether the span is remote, use `(flags & SPAN_FLAGS_CONTEXT_IS_REMOTE_MASK) != 0`.
+	//
+	// When creating span messages, if the message is logically forwarded from another source
+	// with an equivalent flags fields (i.e., usually another OTLP span message), the field SHOULD
+	// be copied as-is. If creating from a source that does not have an equivalent flags field
+	// (such as a runtime representation of an OpenTelemetry span), the high 22 bits MUST
+	// be set to zero.
+	// Readers MUST NOT assume that bits 10-31 (22 most significant bits) will be zero.
+	//
+	// [Optional].
+	Flags uint32 `json:"flags,omitempty"`
+	// A description of the span's operation.
+	//
+	// For example, the name can be a qualified method name or a file name
+	// and a line number where the operation is called. A best practice is to use
+	// the same display name at the same call point in an application.
+	// This makes it easier to correlate spans in different traces.
+	//
+	// This field is semantically required to be set to non-empty string.
+	// Empty value is equivalent to an unknown span name.
+	//
+	// This field is required.
+	Name string `json:"name"`
+	// Distinguishes between spans generated in a particular context. For example,
+	// two spans with the same name may be distinguished using `CLIENT` (caller)
+	// and `SERVER` (callee) to identify queueing latency associated with the span.
+	Kind SpanKind `json:"kind,omitempty"`
+	// start_time_unix_nano is the start time of the span. On the client side, this is the time
+	// kept by the local machine where the span execution starts. On the server side, this
+	// is the time when the server's application handler starts running.
+	// Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970.
+	//
+	// This field is semantically required and it is expected that end_time >= start_time.
+	StartTime time.Time `json:"startTimeUnixNano,omitempty"`
+	// end_time_unix_nano is the end time of the span. On the client side, this is the time
+	// kept by the local machine where the span execution ends. On the server side, this
+	// is the time when the server application handler stops running.
+	// Value is UNIX Epoch time in nanoseconds since 00:00:00 UTC on 1 January 1970.
+	//
+	// This field is semantically required and it is expected that end_time >= start_time.
+	EndTime time.Time `json:"endTimeUnixNano,omitempty"`
+	// attributes is a collection of key/value pairs. Note, global attributes
+	// like server name can be set using the resource API. Examples of attributes:
+	//
+	//     "/http/user_agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36"
+	//     "/http/server_latency": 300
+	//     "example.com/myattribute": true
+	//     "example.com/score": 10.239
+	//
+	// The OpenTelemetry API specification further restricts the allowed value types:
+	// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/common/README.md#attribute
+	// Attribute keys MUST be unique (it is not allowed to have more than one
+	// attribute with the same key).
+	Attrs []Attr `json:"attributes,omitempty"`
+	// dropped_attributes_count is the number of attributes that were discarded. Attributes
+	// can be discarded because their keys are too long or because there are too many
+	// attributes. If this value is 0, then no attributes were dropped.
+	DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
+	// events is a collection of Event items.
+	Events []*SpanEvent `json:"events,omitempty"`
+	// dropped_events_count is the number of dropped events. If the value is 0, then no
+	// events were dropped.
+	DroppedEvents uint32 `json:"droppedEventsCount,omitempty"`
+	// links is a collection of Links, which are references from this span to a span
+	// in the same or different trace.
+	Links []*SpanLink `json:"links,omitempty"`
+	// dropped_links_count is the number of dropped links after the maximum size was
+	// enforced. If this value is 0, then no links were dropped.
+	DroppedLinks uint32 `json:"droppedLinksCount,omitempty"`
+	// An optional final status for this span. Semantically when Status isn't set, it means
+	// span's status code is unset, i.e. assume STATUS_CODE_UNSET (code = 0).
+	Status *Status `json:"status,omitempty"`
+}
+
+// MarshalJSON encodes s into OTLP formatted JSON.
+func (s Span) MarshalJSON() ([]byte, error) {
+	startT := s.StartTime.UnixNano()
+	if s.StartTime.IsZero() || startT < 0 {
+		startT = 0
+	}
+
+	endT := s.EndTime.UnixNano()
+	if s.EndTime.IsZero() || endT < 0 {
+		endT = 0
+	}
+
+	// Override non-empty default SpanID marshal and omitempty.
+	var parentSpanId string
+	if !s.ParentSpanID.IsEmpty() {
+		b := make([]byte, hex.EncodedLen(spanIDSize))
+		hex.Encode(b, s.ParentSpanID[:])
+		parentSpanId = string(b)
+	}
+
+	type Alias Span
+	return json.Marshal(struct {
+		Alias
+		ParentSpanID string `json:"parentSpanId,omitempty"`
+		StartTime    uint64 `json:"startTimeUnixNano,omitempty"`
+		EndTime      uint64 `json:"endTimeUnixNano,omitempty"`
+	}{
+		Alias:        Alias(s),
+		ParentSpanID: parentSpanId,
+		StartTime:    uint64(startT),
+		EndTime:      uint64(endT),
+	})
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into s.
+func (s *Span) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid Span type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid Span field: %#v", keyIface)
+		}
+
+		switch key {
+		case "traceId", "trace_id":
+			err = decoder.Decode(&s.TraceID)
+		case "spanId", "span_id":
+			err = decoder.Decode(&s.SpanID)
+		case "traceState", "trace_state":
+			err = decoder.Decode(&s.TraceState)
+		case "parentSpanId", "parent_span_id":
+			err = decoder.Decode(&s.ParentSpanID)
+		case "flags":
+			err = decoder.Decode(&s.Flags)
+		case "name":
+			err = decoder.Decode(&s.Name)
+		case "kind":
+			err = decoder.Decode(&s.Kind)
+		case "startTimeUnixNano", "start_time_unix_nano":
+			var val protoUint64
+			err = decoder.Decode(&val)
+			s.StartTime = time.Unix(0, int64(val.Uint64()))
+		case "endTimeUnixNano", "end_time_unix_nano":
+			var val protoUint64
+			err = decoder.Decode(&val)
+			s.EndTime = time.Unix(0, int64(val.Uint64()))
+		case "attributes":
+			err = decoder.Decode(&s.Attrs)
+		case "droppedAttributesCount", "dropped_attributes_count":
+			err = decoder.Decode(&s.DroppedAttrs)
+		case "events":
+			err = decoder.Decode(&s.Events)
+		case "droppedEventsCount", "dropped_events_count":
+			err = decoder.Decode(&s.DroppedEvents)
+		case "links":
+			err = decoder.Decode(&s.Links)
+		case "droppedLinksCount", "dropped_links_count":
+			err = decoder.Decode(&s.DroppedLinks)
+		case "status":
+			err = decoder.Decode(&s.Status)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// SpanFlags represents constants used to interpret the
+// Span.flags field, which is protobuf 'fixed32' type and is to
+// be used as bit-fields. Each non-zero value defined in this enum is
+// a bit-mask.  To extract the bit-field, for example, use an
+// expression like:
+//
+//	(span.flags & SPAN_FLAGS_TRACE_FLAGS_MASK)
+//
+// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
+//
+// Note that Span flags were introduced in version 1.1 of the
+// OpenTelemetry protocol.  Older Span producers do not set this
+// field, consequently consumers should not rely on the absence of a
+// particular flag bit to indicate the presence of a particular feature.
+type SpanFlags int32
+
+const (
+	// Bits 0-7 are used for trace flags.
+	SpanFlagsTraceFlagsMask SpanFlags = 255
+	// Bits 8 and 9 are used to indicate that the parent span or link span is remote.
+	// Bit 8 (`HAS_IS_REMOTE`) indicates whether the value is known.
+	// Bit 9 (`IS_REMOTE`) indicates whether the span or link is remote.
+	SpanFlagsContextHasIsRemoteMask SpanFlags = 256
+	// SpanFlagsContextHasIsRemoteMask indicates the Span is remote.
+	SpanFlagsContextIsRemoteMask SpanFlags = 512
+)
+
+// SpanKind is the type of span. Can be used to specify additional relationships between spans
+// in addition to a parent/child relationship.
+type SpanKind int32
+
+const (
+	// Indicates that the span represents an internal operation within an application,
+	// as opposed to an operation happening at the boundaries. Default value.
+	SpanKindInternal SpanKind = 1
+	// Indicates that the span covers server-side handling of an RPC or other
+	// remote network request.
+	SpanKindServer SpanKind = 2
+	// Indicates that the span describes a request to some remote service.
+	SpanKindClient SpanKind = 3
+	// Indicates that the span describes a producer sending a message to a broker.
+	// Unlike CLIENT and SERVER, there is often no direct critical path latency relationship
+	// between producer and consumer spans. A PRODUCER span ends when the message was accepted
+	// by the broker while the logical processing of the message might span a much longer time.
+	SpanKindProducer SpanKind = 4
+	// Indicates that the span describes consumer receiving a message from a broker.
+	// Like the PRODUCER kind, there is often no direct critical path latency relationship
+	// between producer and consumer spans.
+	SpanKindConsumer SpanKind = 5
+)
+
+// Event is a time-stamped annotation of the span, consisting of user-supplied
+// text description and key-value pairs.
+type SpanEvent struct {
+	// time_unix_nano is the time the event occurred.
+	Time time.Time `json:"timeUnixNano,omitempty"`
+	// name of the event.
+	// This field is semantically required to be set to non-empty string.
+	Name string `json:"name,omitempty"`
+	// attributes is a collection of attribute key/value pairs on the event.
+	// Attribute keys MUST be unique (it is not allowed to have more than one
+	// attribute with the same key).
+	Attrs []Attr `json:"attributes,omitempty"`
+	// dropped_attributes_count is the number of dropped attributes. If the value is 0,
+	// then no attributes were dropped.
+	DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
+}
+
+// MarshalJSON encodes e into OTLP formatted JSON.
+func (e SpanEvent) MarshalJSON() ([]byte, error) {
+	t := e.Time.UnixNano()
+	if e.Time.IsZero() || t < 0 {
+		t = 0
+	}
+
+	type Alias SpanEvent
+	return json.Marshal(struct {
+		Alias
+		Time uint64 `json:"timeUnixNano,omitempty"`
+	}{
+		Alias: Alias(e),
+		Time:  uint64(t),
+	})
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into se.
+func (se *SpanEvent) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid SpanEvent type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid SpanEvent field: %#v", keyIface)
+		}
+
+		switch key {
+		case "timeUnixNano", "time_unix_nano":
+			var val protoUint64
+			err = decoder.Decode(&val)
+			se.Time = time.Unix(0, int64(val.Uint64()))
+		case "name":
+			err = decoder.Decode(&se.Name)
+		case "attributes":
+			err = decoder.Decode(&se.Attrs)
+		case "droppedAttributesCount", "dropped_attributes_count":
+			err = decoder.Decode(&se.DroppedAttrs)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// A pointer from the current span to another span in the same trace or in a
+// different trace. For example, this can be used in batching operations,
+// where a single batch handler processes multiple requests from different
+// traces or when the handler receives a request from a different project.
+type SpanLink struct {
+	// A unique identifier of a trace that this linked span is part of. The ID is a
+	// 16-byte array.
+	TraceID TraceID `json:"traceId,omitempty"`
+	// A unique identifier for the linked span. The ID is an 8-byte array.
+	SpanID SpanID `json:"spanId,omitempty"`
+	// The trace_state associated with the link.
+	TraceState string `json:"traceState,omitempty"`
+	// attributes is a collection of attribute key/value pairs on the link.
+	// Attribute keys MUST be unique (it is not allowed to have more than one
+	// attribute with the same key).
+	Attrs []Attr `json:"attributes,omitempty"`
+	// dropped_attributes_count is the number of dropped attributes. If the value is 0,
+	// then no attributes were dropped.
+	DroppedAttrs uint32 `json:"droppedAttributesCount,omitempty"`
+	// Flags, a bit field.
+	//
+	// Bits 0-7 (8 least significant bits) are the trace flags as defined in W3C Trace
+	// Context specification. To read the 8-bit W3C trace flag, use
+	// `flags & SPAN_FLAGS_TRACE_FLAGS_MASK`.
+	//
+	// See https://www.w3.org/TR/trace-context-2/#trace-flags for the flag definitions.
+	//
+	// Bits 8 and 9 represent the 3 states of whether the link is remote.
+	// The states are (unknown, is not remote, is remote).
+	// To read whether the value is known, use `(flags & SPAN_FLAGS_CONTEXT_HAS_IS_REMOTE_MASK) != 0`.
+	// To read whether the link is remote, use `(flags & SPAN_FLAGS_CONTEXT_IS_REMOTE_MASK) != 0`.
+	//
+	// Readers MUST NOT assume that bits 10-31 (22 most significant bits) will be zero.
+	// When creating new spans, bits 10-31 (most-significant 22-bits) MUST be zero.
+	//
+	// [Optional].
+	Flags uint32 `json:"flags,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into sl.
+func (sl *SpanLink) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid SpanLink type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid SpanLink field: %#v", keyIface)
+		}
+
+		switch key {
+		case "traceId", "trace_id":
+			err = decoder.Decode(&sl.TraceID)
+		case "spanId", "span_id":
+			err = decoder.Decode(&sl.SpanID)
+		case "traceState", "trace_state":
+			err = decoder.Decode(&sl.TraceState)
+		case "attributes":
+			err = decoder.Decode(&sl.Attrs)
+		case "droppedAttributesCount", "dropped_attributes_count":
+			err = decoder.Decode(&sl.DroppedAttrs)
+		case "flags":
+			err = decoder.Decode(&sl.Flags)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/status.go

@@ -0,0 +1,40 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+// For the semantics of status codes see
+// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#set-status
+type StatusCode int32
+
+const (
+	// The default status.
+	StatusCodeUnset StatusCode = 0
+	// The Span has been validated by an Application developer or Operator to
+	// have completed successfully.
+	StatusCodeOK StatusCode = 1
+	// The Span contains an error.
+	StatusCodeError StatusCode = 2
+)
+
+var statusCodeStrings = []string{
+	"Unset",
+	"OK",
+	"Error",
+}
+
+func (s StatusCode) String() string {
+	if s >= 0 && int(s) < len(statusCodeStrings) {
+		return statusCodeStrings[s]
+	}
+	return "<unknown telemetry.StatusCode>"
+}
+
+// The Status type defines a logical error model that is suitable for different
+// programming environments, including REST APIs and RPC APIs.
+type Status struct {
+	// A developer-facing human readable error message.
+	Message string `json:"message,omitempty"`
+	// The status code.
+	Code StatusCode `json:"code,omitempty"`
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/traces.go

@@ -0,0 +1,189 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package telemetry
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+)
+
+// Traces represents the traces data that can be stored in a persistent storage,
+// OR can be embedded by other protocols that transfer OTLP traces data but do
+// not implement the OTLP protocol.
+//
+// The main difference between this message and collector protocol is that
+// in this message there will not be any "control" or "metadata" specific to
+// OTLP protocol.
+//
+// When new fields are added into this message, the OTLP request MUST be updated
+// as well.
+type Traces struct {
+	// An array of ResourceSpans.
+	// For data coming from a single resource this array will typically contain
+	// one element. Intermediary nodes that receive data from multiple origins
+	// typically batch the data before forwarding further and in that case this
+	// array will contain multiple elements.
+	ResourceSpans []*ResourceSpans `json:"resourceSpans,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into td.
+func (td *Traces) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid TracesData type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid TracesData field: %#v", keyIface)
+		}
+
+		switch key {
+		case "resourceSpans", "resource_spans":
+			err = decoder.Decode(&td.ResourceSpans)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// A collection of ScopeSpans from a Resource.
+type ResourceSpans struct {
+	// The resource for the spans in this message.
+	// If this field is not set then no resource info is known.
+	Resource Resource `json:"resource"`
+	// A list of ScopeSpans that originate from a resource.
+	ScopeSpans []*ScopeSpans `json:"scopeSpans,omitempty"`
+	// This schema_url applies to the data in the "resource" field. It does not apply
+	// to the data in the "scope_spans" field which have their own schema_url field.
+	SchemaURL string `json:"schemaUrl,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into rs.
+func (rs *ResourceSpans) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid ResourceSpans type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid ResourceSpans field: %#v", keyIface)
+		}
+
+		switch key {
+		case "resource":
+			err = decoder.Decode(&rs.Resource)
+		case "scopeSpans", "scope_spans":
+			err = decoder.Decode(&rs.ScopeSpans)
+		case "schemaUrl", "schema_url":
+			err = decoder.Decode(&rs.SchemaURL)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// A collection of Spans produced by an InstrumentationScope.
+type ScopeSpans struct {
+	// The instrumentation scope information for the spans in this message.
+	// Semantically when InstrumentationScope isn't set, it is equivalent with
+	// an empty instrumentation scope name (unknown).
+	Scope *Scope `json:"scope"`
+	// A list of Spans that originate from an instrumentation scope.
+	Spans []*Span `json:"spans,omitempty"`
+	// The Schema URL, if known. This is the identifier of the Schema that the span data
+	// is recorded in. To learn more about Schema URL see
+	// https://opentelemetry.io/docs/specs/otel/schemas/#schema-url
+	// This schema_url applies to all spans and span events in the "spans" field.
+	SchemaURL string `json:"schemaUrl,omitempty"`
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into ss.
+func (ss *ScopeSpans) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid ScopeSpans type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid ScopeSpans field: %#v", keyIface)
+		}
+
+		switch key {
+		case "scope":
+			err = decoder.Decode(&ss.Scope)
+		case "spans":
+			err = decoder.Decode(&ss.Spans)
+		case "schemaUrl", "schema_url":
+			err = decoder.Decode(&ss.SchemaURL)
+		default:
+			// Skip unknown.
+		}
+
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/internal/telemetry/value.go

@@ -0,0 +1,452 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+//go:generate stringer -type=ValueKind -trimprefix=ValueKind
+
+package telemetry
+
+import (
+	"bytes"
+	"cmp"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"slices"
+	"strconv"
+	"unsafe"
+)
+
+// A Value represents a structured value.
+// A zero value is valid and represents an empty value.
+type Value struct {
+	// Ensure forward compatibility by explicitly making this not comparable.
+	noCmp [0]func() //nolint: unused  // This is indeed used.
+
+	// num holds the value for Int64, Float64, and Bool. It holds the length
+	// for String, Bytes, Slice, Map.
+	num uint64
+	// any holds either the KindBool, KindInt64, KindFloat64, stringptr,
+	// bytesptr, sliceptr, or mapptr. If KindBool, KindInt64, or KindFloat64
+	// then the value of Value is in num as described above. Otherwise, it
+	// contains the value wrapped in the appropriate type.
+	any any
+}
+
+type (
+	// sliceptr represents a value in Value.any for KindString Values.
+	stringptr *byte
+	// bytesptr represents a value in Value.any for KindBytes Values.
+	bytesptr *byte
+	// sliceptr represents a value in Value.any for KindSlice Values.
+	sliceptr *Value
+	// mapptr represents a value in Value.any for KindMap Values.
+	mapptr *Attr
+)
+
+// ValueKind is the kind of a [Value].
+type ValueKind int
+
+// ValueKind values.
+const (
+	ValueKindEmpty ValueKind = iota
+	ValueKindBool
+	ValueKindFloat64
+	ValueKindInt64
+	ValueKindString
+	ValueKindBytes
+	ValueKindSlice
+	ValueKindMap
+)
+
+var valueKindStrings = []string{
+	"Empty",
+	"Bool",
+	"Float64",
+	"Int64",
+	"String",
+	"Bytes",
+	"Slice",
+	"Map",
+}
+
+func (k ValueKind) String() string {
+	if k >= 0 && int(k) < len(valueKindStrings) {
+		return valueKindStrings[k]
+	}
+	return "<unknown telemetry.ValueKind>"
+}
+
+// StringValue returns a new [Value] for a string.
+func StringValue(v string) Value {
+	return Value{
+		num: uint64(len(v)),
+		any: stringptr(unsafe.StringData(v)),
+	}
+}
+
+// IntValue returns a [Value] for an int.
+func IntValue(v int) Value { return Int64Value(int64(v)) }
+
+// Int64Value returns a [Value] for an int64.
+func Int64Value(v int64) Value {
+	return Value{num: uint64(v), any: ValueKindInt64}
+}
+
+// Float64Value returns a [Value] for a float64.
+func Float64Value(v float64) Value {
+	return Value{num: math.Float64bits(v), any: ValueKindFloat64}
+}
+
+// BoolValue returns a [Value] for a bool.
+func BoolValue(v bool) Value { //nolint:revive // Not a control flag.
+	var n uint64
+	if v {
+		n = 1
+	}
+	return Value{num: n, any: ValueKindBool}
+}
+
+// BytesValue returns a [Value] for a byte slice. The passed slice must not be
+// changed after it is passed.
+func BytesValue(v []byte) Value {
+	return Value{
+		num: uint64(len(v)),
+		any: bytesptr(unsafe.SliceData(v)),
+	}
+}
+
+// SliceValue returns a [Value] for a slice of [Value]. The passed slice must
+// not be changed after it is passed.
+func SliceValue(vs ...Value) Value {
+	return Value{
+		num: uint64(len(vs)),
+		any: sliceptr(unsafe.SliceData(vs)),
+	}
+}
+
+// MapValue returns a new [Value] for a slice of key-value pairs. The passed
+// slice must not be changed after it is passed.
+func MapValue(kvs ...Attr) Value {
+	return Value{
+		num: uint64(len(kvs)),
+		any: mapptr(unsafe.SliceData(kvs)),
+	}
+}
+
+// AsString returns the value held by v as a string.
+func (v Value) AsString() string {
+	if sp, ok := v.any.(stringptr); ok {
+		return unsafe.String(sp, v.num)
+	}
+	// TODO: error handle
+	return ""
+}
+
+// asString returns the value held by v as a string. It will panic if the Value
+// is not KindString.
+func (v Value) asString() string {
+	return unsafe.String(v.any.(stringptr), v.num)
+}
+
+// AsInt64 returns the value held by v as an int64.
+func (v Value) AsInt64() int64 {
+	if v.Kind() != ValueKindInt64 {
+		// TODO: error handle
+		return 0
+	}
+	return v.asInt64()
+}
+
+// asInt64 returns the value held by v as an int64. If v is not of KindInt64,
+// this will return garbage.
+func (v Value) asInt64() int64 {
+	// Assumes v.num was a valid int64 (overflow not checked).
+	return int64(v.num) // nolint: gosec
+}
+
+// AsBool returns the value held by v as a bool.
+func (v Value) AsBool() bool {
+	if v.Kind() != ValueKindBool {
+		// TODO: error handle
+		return false
+	}
+	return v.asBool()
+}
+
+// asBool returns the value held by v as a bool. If v is not of KindBool, this
+// will return garbage.
+func (v Value) asBool() bool { return v.num == 1 }
+
+// AsFloat64 returns the value held by v as a float64.
+func (v Value) AsFloat64() float64 {
+	if v.Kind() != ValueKindFloat64 {
+		// TODO: error handle
+		return 0
+	}
+	return v.asFloat64()
+}
+
+// asFloat64 returns the value held by v as a float64. If v is not of
+// KindFloat64, this will return garbage.
+func (v Value) asFloat64() float64 { return math.Float64frombits(v.num) }
+
+// AsBytes returns the value held by v as a []byte.
+func (v Value) AsBytes() []byte {
+	if sp, ok := v.any.(bytesptr); ok {
+		return unsafe.Slice((*byte)(sp), v.num)
+	}
+	// TODO: error handle
+	return nil
+}
+
+// asBytes returns the value held by v as a []byte. It will panic if the Value
+// is not KindBytes.
+func (v Value) asBytes() []byte {
+	return unsafe.Slice((*byte)(v.any.(bytesptr)), v.num)
+}
+
+// AsSlice returns the value held by v as a []Value.
+func (v Value) AsSlice() []Value {
+	if sp, ok := v.any.(sliceptr); ok {
+		return unsafe.Slice((*Value)(sp), v.num)
+	}
+	// TODO: error handle
+	return nil
+}
+
+// asSlice returns the value held by v as a []Value. It will panic if the Value
+// is not KindSlice.
+func (v Value) asSlice() []Value {
+	return unsafe.Slice((*Value)(v.any.(sliceptr)), v.num)
+}
+
+// AsMap returns the value held by v as a []Attr.
+func (v Value) AsMap() []Attr {
+	if sp, ok := v.any.(mapptr); ok {
+		return unsafe.Slice((*Attr)(sp), v.num)
+	}
+	// TODO: error handle
+	return nil
+}
+
+// asMap returns the value held by v as a []Attr. It will panic if the
+// Value is not KindMap.
+func (v Value) asMap() []Attr {
+	return unsafe.Slice((*Attr)(v.any.(mapptr)), v.num)
+}
+
+// Kind returns the Kind of v.
+func (v Value) Kind() ValueKind {
+	switch x := v.any.(type) {
+	case ValueKind:
+		return x
+	case stringptr:
+		return ValueKindString
+	case bytesptr:
+		return ValueKindBytes
+	case sliceptr:
+		return ValueKindSlice
+	case mapptr:
+		return ValueKindMap
+	default:
+		return ValueKindEmpty
+	}
+}
+
+// Empty returns if v does not hold any value.
+func (v Value) Empty() bool { return v.Kind() == ValueKindEmpty }
+
+// Equal returns if v is equal to w.
+func (v Value) Equal(w Value) bool {
+	k1 := v.Kind()
+	k2 := w.Kind()
+	if k1 != k2 {
+		return false
+	}
+	switch k1 {
+	case ValueKindInt64, ValueKindBool:
+		return v.num == w.num
+	case ValueKindString:
+		return v.asString() == w.asString()
+	case ValueKindFloat64:
+		return v.asFloat64() == w.asFloat64()
+	case ValueKindSlice:
+		return slices.EqualFunc(v.asSlice(), w.asSlice(), Value.Equal)
+	case ValueKindMap:
+		sv := sortMap(v.asMap())
+		sw := sortMap(w.asMap())
+		return slices.EqualFunc(sv, sw, Attr.Equal)
+	case ValueKindBytes:
+		return bytes.Equal(v.asBytes(), w.asBytes())
+	case ValueKindEmpty:
+		return true
+	default:
+		// TODO: error handle
+		return false
+	}
+}
+
+func sortMap(m []Attr) []Attr {
+	sm := make([]Attr, len(m))
+	copy(sm, m)
+	slices.SortFunc(sm, func(a, b Attr) int {
+		return cmp.Compare(a.Key, b.Key)
+	})
+
+	return sm
+}
+
+// String returns Value's value as a string, formatted like [fmt.Sprint].
+//
+// The returned string is meant for debugging;
+// the string representation is not stable.
+func (v Value) String() string {
+	switch v.Kind() {
+	case ValueKindString:
+		return v.asString()
+	case ValueKindInt64:
+		// Assumes v.num was a valid int64 (overflow not checked).
+		return strconv.FormatInt(int64(v.num), 10) // nolint: gosec
+	case ValueKindFloat64:
+		return strconv.FormatFloat(v.asFloat64(), 'g', -1, 64)
+	case ValueKindBool:
+		return strconv.FormatBool(v.asBool())
+	case ValueKindBytes:
+		return fmt.Sprint(v.asBytes())
+	case ValueKindMap:
+		return fmt.Sprint(v.asMap())
+	case ValueKindSlice:
+		return fmt.Sprint(v.asSlice())
+	case ValueKindEmpty:
+		return "<nil>"
+	default:
+		// Try to handle this as gracefully as possible.
+		//
+		// Don't panic here. The goal here is to have developers find this
+		// first if a slog.Kind is is not handled. It is
+		// preferable to have user's open issue asking why their attributes
+		// have a "unhandled: " prefix than say that their code is panicking.
+		return fmt.Sprintf("<unhandled telemetry.ValueKind: %s>", v.Kind())
+	}
+}
+
+// MarshalJSON encodes v into OTLP formatted JSON.
+func (v *Value) MarshalJSON() ([]byte, error) {
+	switch v.Kind() {
+	case ValueKindString:
+		return json.Marshal(struct {
+			Value string `json:"stringValue"`
+		}{v.asString()})
+	case ValueKindInt64:
+		return json.Marshal(struct {
+			Value string `json:"intValue"`
+		}{strconv.FormatInt(int64(v.num), 10)})
+	case ValueKindFloat64:
+		return json.Marshal(struct {
+			Value float64 `json:"doubleValue"`
+		}{v.asFloat64()})
+	case ValueKindBool:
+		return json.Marshal(struct {
+			Value bool `json:"boolValue"`
+		}{v.asBool()})
+	case ValueKindBytes:
+		return json.Marshal(struct {
+			Value []byte `json:"bytesValue"`
+		}{v.asBytes()})
+	case ValueKindMap:
+		return json.Marshal(struct {
+			Value struct {
+				Values []Attr `json:"values"`
+			} `json:"kvlistValue"`
+		}{struct {
+			Values []Attr `json:"values"`
+		}{v.asMap()}})
+	case ValueKindSlice:
+		return json.Marshal(struct {
+			Value struct {
+				Values []Value `json:"values"`
+			} `json:"arrayValue"`
+		}{struct {
+			Values []Value `json:"values"`
+		}{v.asSlice()}})
+	case ValueKindEmpty:
+		return nil, nil
+	default:
+		return nil, fmt.Errorf("unknown Value kind: %s", v.Kind().String())
+	}
+}
+
+// UnmarshalJSON decodes the OTLP formatted JSON contained in data into v.
+func (v *Value) UnmarshalJSON(data []byte) error {
+	decoder := json.NewDecoder(bytes.NewReader(data))
+
+	t, err := decoder.Token()
+	if err != nil {
+		return err
+	}
+	if t != json.Delim('{') {
+		return errors.New("invalid Value type")
+	}
+
+	for decoder.More() {
+		keyIface, err := decoder.Token()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				// Empty.
+				return nil
+			}
+			return err
+		}
+
+		key, ok := keyIface.(string)
+		if !ok {
+			return fmt.Errorf("invalid Value key: %#v", keyIface)
+		}
+
+		switch key {
+		case "stringValue", "string_value":
+			var val string
+			err = decoder.Decode(&val)
+			*v = StringValue(val)
+		case "boolValue", "bool_value":
+			var val bool
+			err = decoder.Decode(&val)
+			*v = BoolValue(val)
+		case "intValue", "int_value":
+			var val protoInt64
+			err = decoder.Decode(&val)
+			*v = Int64Value(val.Int64())
+		case "doubleValue", "double_value":
+			var val float64
+			err = decoder.Decode(&val)
+			*v = Float64Value(val)
+		case "bytesValue", "bytes_value":
+			var val64 string
+			if err := decoder.Decode(&val64); err != nil {
+				return err
+			}
+			var val []byte
+			val, err = base64.StdEncoding.DecodeString(val64)
+			*v = BytesValue(val)
+		case "arrayValue", "array_value":
+			var val struct{ Values []Value }
+			err = decoder.Decode(&val)
+			*v = SliceValue(val.Values...)
+		case "kvlistValue", "kvlist_value":
+			var val struct{ Values []Attr }
+			err = decoder.Decode(&val)
+			*v = MapValue(val.Values...)
+		default:
+			// Skip unknown.
+			continue
+		}
+		// Use first valid. Ignore the rest.
+		return err
+	}
+
+	// Only unknown fields. Return nil without unmarshaling any value.
+	return nil
+}

vendor/go.opentelemetry.io/auto/sdk/limit.go

@@ -0,0 +1,94 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package sdk
+
+import (
+	"log/slog"
+	"os"
+	"strconv"
+)
+
+// maxSpan are the span limits resolved during startup.
+var maxSpan = newSpanLimits()
+
+type spanLimits struct {
+	// Attrs is the number of allowed attributes for a span.
+	//
+	// This is resolved from the environment variable value for the
+	// OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT key if it exists. Otherwise, the
+	// environment variable value for OTEL_ATTRIBUTE_COUNT_LIMIT, or 128 if
+	// that is not set, is used.
+	Attrs int
+	// AttrValueLen is the maximum attribute value length allowed for a span.
+	//
+	// This is resolved from the environment variable value for the
+	// OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT key if it exists. Otherwise, the
+	// environment variable value for OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT, or -1
+	// if that is not set, is used.
+	AttrValueLen int
+	// Events is the number of allowed events for a span.
+	//
+	// This is resolved from the environment variable value for the
+	// OTEL_SPAN_EVENT_COUNT_LIMIT key, or 128 is used if that is not set.
+	Events int
+	// EventAttrs is the number of allowed attributes for a span event.
+	//
+	// The is resolved from the environment variable value for the
+	// OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT key, or 128 is used if that is not set.
+	EventAttrs int
+	// Links is the number of allowed Links for a span.
+	//
+	// This is resolved from the environment variable value for the
+	// OTEL_SPAN_LINK_COUNT_LIMIT, or 128 is used if that is not set.
+	Links int
+	// LinkAttrs is the number of allowed attributes for a span link.
+	//
+	// This is resolved from the environment variable value for the
+	// OTEL_LINK_ATTRIBUTE_COUNT_LIMIT, or 128 is used if that is not set.
+	LinkAttrs int
+}
+
+func newSpanLimits() spanLimits {
+	return spanLimits{
+		Attrs: firstEnv(
+			128,
+			"OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT",
+			"OTEL_ATTRIBUTE_COUNT_LIMIT",
+		),
+		AttrValueLen: firstEnv(
+			-1, // Unlimited.
+			"OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT",
+			"OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT",
+		),
+		Events:     firstEnv(128, "OTEL_SPAN_EVENT_COUNT_LIMIT"),
+		EventAttrs: firstEnv(128, "OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT"),
+		Links:      firstEnv(128, "OTEL_SPAN_LINK_COUNT_LIMIT"),
+		LinkAttrs:  firstEnv(128, "OTEL_LINK_ATTRIBUTE_COUNT_LIMIT"),
+	}
+}
+
+// firstEnv returns the parsed integer value of the first matching environment
+// variable from keys. The defaultVal is returned if the value is not an
+// integer or no match is found.
+func firstEnv(defaultVal int, keys ...string) int {
+	for _, key := range keys {
+		strV := os.Getenv(key)
+		if strV == "" {
+			continue
+		}
+
+		v, err := strconv.Atoi(strV)
+		if err == nil {
+			return v
+		}
+		slog.Warn(
+			"invalid limit environment variable",
+			"error", err,
+			"key", key,
+			"value", strV,
+		)
+	}
+
+	return defaultVal
+}

vendor/go.opentelemetry.io/auto/sdk/span.go

@@ -0,0 +1,432 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package sdk
+
+import (
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"runtime"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+	"unicode/utf8"
+
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
+	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/noop"
+
+	"go.opentelemetry.io/auto/sdk/internal/telemetry"
+)
+
+type span struct {
+	noop.Span
+
+	spanContext trace.SpanContext
+	sampled     atomic.Bool
+
+	mu     sync.Mutex
+	traces *telemetry.Traces
+	span   *telemetry.Span
+}
+
+func (s *span) SpanContext() trace.SpanContext {
+	if s == nil {
+		return trace.SpanContext{}
+	}
+	// s.spanContext is immutable, do not acquire lock s.mu.
+	return s.spanContext
+}
+
+func (s *span) IsRecording() bool {
+	if s == nil {
+		return false
+	}
+
+	return s.sampled.Load()
+}
+
+func (s *span) SetStatus(c codes.Code, msg string) {
+	if s == nil || !s.sampled.Load() {
+		return
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if s.span.Status == nil {
+		s.span.Status = new(telemetry.Status)
+	}
+
+	s.span.Status.Message = msg
+
+	switch c {
+	case codes.Unset:
+		s.span.Status.Code = telemetry.StatusCodeUnset
+	case codes.Error:
+		s.span.Status.Code = telemetry.StatusCodeError
+	case codes.Ok:
+		s.span.Status.Code = telemetry.StatusCodeOK
+	}
+}
+
+func (s *span) SetAttributes(attrs ...attribute.KeyValue) {
+	if s == nil || !s.sampled.Load() {
+		return
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	limit := maxSpan.Attrs
+	if limit == 0 {
+		// No attributes allowed.
+		s.span.DroppedAttrs += uint32(len(attrs))
+		return
+	}
+
+	m := make(map[string]int)
+	for i, a := range s.span.Attrs {
+		m[a.Key] = i
+	}
+
+	for _, a := range attrs {
+		val := convAttrValue(a.Value)
+		if val.Empty() {
+			s.span.DroppedAttrs++
+			continue
+		}
+
+		if idx, ok := m[string(a.Key)]; ok {
+			s.span.Attrs[idx] = telemetry.Attr{
+				Key:   string(a.Key),
+				Value: val,
+			}
+		} else if limit < 0 || len(s.span.Attrs) < limit {
+			s.span.Attrs = append(s.span.Attrs, telemetry.Attr{
+				Key:   string(a.Key),
+				Value: val,
+			})
+			m[string(a.Key)] = len(s.span.Attrs) - 1
+		} else {
+			s.span.DroppedAttrs++
+		}
+	}
+}
+
+// convCappedAttrs converts up to limit attrs into a []telemetry.Attr. The
+// number of dropped attributes is also returned.
+func convCappedAttrs(limit int, attrs []attribute.KeyValue) ([]telemetry.Attr, uint32) {
+	if limit == 0 {
+		return nil, uint32(len(attrs))
+	}
+
+	if limit < 0 {
+		// Unlimited.
+		return convAttrs(attrs), 0
+	}
+
+	limit = min(len(attrs), limit)
+	return convAttrs(attrs[:limit]), uint32(len(attrs) - limit)
+}
+
+func convAttrs(attrs []attribute.KeyValue) []telemetry.Attr {
+	if len(attrs) == 0 {
+		// Avoid allocations if not necessary.
+		return nil
+	}
+
+	out := make([]telemetry.Attr, 0, len(attrs))
+	for _, attr := range attrs {
+		key := string(attr.Key)
+		val := convAttrValue(attr.Value)
+		if val.Empty() {
+			continue
+		}
+		out = append(out, telemetry.Attr{Key: key, Value: val})
+	}
+	return out
+}
+
+func convAttrValue(value attribute.Value) telemetry.Value {
+	switch value.Type() {
+	case attribute.BOOL:
+		return telemetry.BoolValue(value.AsBool())
+	case attribute.INT64:
+		return telemetry.Int64Value(value.AsInt64())
+	case attribute.FLOAT64:
+		return telemetry.Float64Value(value.AsFloat64())
+	case attribute.STRING:
+		v := truncate(maxSpan.AttrValueLen, value.AsString())
+		return telemetry.StringValue(v)
+	case attribute.BOOLSLICE:
+		slice := value.AsBoolSlice()
+		out := make([]telemetry.Value, 0, len(slice))
+		for _, v := range slice {
+			out = append(out, telemetry.BoolValue(v))
+		}
+		return telemetry.SliceValue(out...)
+	case attribute.INT64SLICE:
+		slice := value.AsInt64Slice()
+		out := make([]telemetry.Value, 0, len(slice))
+		for _, v := range slice {
+			out = append(out, telemetry.Int64Value(v))
+		}
+		return telemetry.SliceValue(out...)
+	case attribute.FLOAT64SLICE:
+		slice := value.AsFloat64Slice()
+		out := make([]telemetry.Value, 0, len(slice))
+		for _, v := range slice {
+			out = append(out, telemetry.Float64Value(v))
+		}
+		return telemetry.SliceValue(out...)
+	case attribute.STRINGSLICE:
+		slice := value.AsStringSlice()
+		out := make([]telemetry.Value, 0, len(slice))
+		for _, v := range slice {
+			v = truncate(maxSpan.AttrValueLen, v)
+			out = append(out, telemetry.StringValue(v))
+		}
+		return telemetry.SliceValue(out...)
+	}
+	return telemetry.Value{}
+}
+
+// truncate returns a truncated version of s such that it contains less than
+// the limit number of characters. Truncation is applied by returning the limit
+// number of valid characters contained in s.
+//
+// If limit is negative, it returns the original string.
+//
+// UTF-8 is supported. When truncating, all invalid characters are dropped
+// before applying truncation.
+//
+// If s already contains less than the limit number of bytes, it is returned
+// unchanged. No invalid characters are removed.
+func truncate(limit int, s string) string {
+	// This prioritize performance in the following order based on the most
+	// common expected use-cases.
+	//
+	//  - Short values less than the default limit (128).
+	//  - Strings with valid encodings that exceed the limit.
+	//  - No limit.
+	//  - Strings with invalid encodings that exceed the limit.
+	if limit < 0 || len(s) <= limit {
+		return s
+	}
+
+	// Optimistically, assume all valid UTF-8.
+	var b strings.Builder
+	count := 0
+	for i, c := range s {
+		if c != utf8.RuneError {
+			count++
+			if count > limit {
+				return s[:i]
+			}
+			continue
+		}
+
+		_, size := utf8.DecodeRuneInString(s[i:])
+		if size == 1 {
+			// Invalid encoding.
+			b.Grow(len(s) - 1)
+			_, _ = b.WriteString(s[:i])
+			s = s[i:]
+			break
+		}
+	}
+
+	// Fast-path, no invalid input.
+	if b.Cap() == 0 {
+		return s
+	}
+
+	// Truncate while validating UTF-8.
+	for i := 0; i < len(s) && count < limit; {
+		c := s[i]
+		if c < utf8.RuneSelf {
+			// Optimization for single byte runes (common case).
+			_ = b.WriteByte(c)
+			i++
+			count++
+			continue
+		}
+
+		_, size := utf8.DecodeRuneInString(s[i:])
+		if size == 1 {
+			// We checked for all 1-byte runes above, this is a RuneError.
+			i++
+			continue
+		}
+
+		_, _ = b.WriteString(s[i : i+size])
+		i += size
+		count++
+	}
+
+	return b.String()
+}
+
+func (s *span) End(opts ...trace.SpanEndOption) {
+	if s == nil || !s.sampled.Swap(false) {
+		return
+	}
+
+	// s.end exists so the lock (s.mu) is not held while s.ended is called.
+	s.ended(s.end(opts))
+}
+
+func (s *span) end(opts []trace.SpanEndOption) []byte {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	cfg := trace.NewSpanEndConfig(opts...)
+	if t := cfg.Timestamp(); !t.IsZero() {
+		s.span.EndTime = cfg.Timestamp()
+	} else {
+		s.span.EndTime = time.Now()
+	}
+
+	b, _ := json.Marshal(s.traces) // TODO: do not ignore this error.
+	return b
+}
+
+// Expected to be implemented in eBPF.
+//
+//go:noinline
+func (*span) ended(buf []byte) { ended(buf) }
+
+// ended is used for testing.
+var ended = func([]byte) {}
+
+func (s *span) RecordError(err error, opts ...trace.EventOption) {
+	if s == nil || err == nil || !s.sampled.Load() {
+		return
+	}
+
+	cfg := trace.NewEventConfig(opts...)
+
+	attrs := cfg.Attributes()
+	attrs = append(attrs,
+		semconv.ExceptionType(typeStr(err)),
+		semconv.ExceptionMessage(err.Error()),
+	)
+	if cfg.StackTrace() {
+		buf := make([]byte, 2048)
+		n := runtime.Stack(buf, false)
+		attrs = append(attrs, semconv.ExceptionStacktrace(string(buf[0:n])))
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.addEvent(semconv.ExceptionEventName, cfg.Timestamp(), attrs)
+}
+
+func typeStr(i any) string {
+	t := reflect.TypeOf(i)
+	if t.PkgPath() == "" && t.Name() == "" {
+		// Likely a builtin type.
+		return t.String()
+	}
+	return fmt.Sprintf("%s.%s", t.PkgPath(), t.Name())
+}
+
+func (s *span) AddEvent(name string, opts ...trace.EventOption) {
+	if s == nil || !s.sampled.Load() {
+		return
+	}
+
+	cfg := trace.NewEventConfig(opts...)
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.addEvent(name, cfg.Timestamp(), cfg.Attributes())
+}
+
+// addEvent adds an event with name and attrs at tStamp to the span. The span
+// lock (s.mu) needs to be held by the caller.
+func (s *span) addEvent(name string, tStamp time.Time, attrs []attribute.KeyValue) {
+	limit := maxSpan.Events
+
+	if limit == 0 {
+		s.span.DroppedEvents++
+		return
+	}
+
+	if limit > 0 && len(s.span.Events) == limit {
+		// Drop head while avoiding allocation of more capacity.
+		copy(s.span.Events[:limit-1], s.span.Events[1:])
+		s.span.Events = s.span.Events[:limit-1]
+		s.span.DroppedEvents++
+	}
+
+	e := &telemetry.SpanEvent{Time: tStamp, Name: name}
+	e.Attrs, e.DroppedAttrs = convCappedAttrs(maxSpan.EventAttrs, attrs)
+
+	s.span.Events = append(s.span.Events, e)
+}
+
+func (s *span) AddLink(link trace.Link) {
+	if s == nil || !s.sampled.Load() {
+		return
+	}
+
+	l := maxSpan.Links
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	if l == 0 {
+		s.span.DroppedLinks++
+		return
+	}
+
+	if l > 0 && len(s.span.Links) == l {
+		// Drop head while avoiding allocation of more capacity.
+		copy(s.span.Links[:l-1], s.span.Links[1:])
+		s.span.Links = s.span.Links[:l-1]
+		s.span.DroppedLinks++
+	}
+
+	s.span.Links = append(s.span.Links, convLink(link))
+}
+
+func convLinks(links []trace.Link) []*telemetry.SpanLink {
+	out := make([]*telemetry.SpanLink, 0, len(links))
+	for _, link := range links {
+		out = append(out, convLink(link))
+	}
+	return out
+}
+
+func convLink(link trace.Link) *telemetry.SpanLink {
+	l := &telemetry.SpanLink{
+		TraceID:    telemetry.TraceID(link.SpanContext.TraceID()),
+		SpanID:     telemetry.SpanID(link.SpanContext.SpanID()),
+		TraceState: link.SpanContext.TraceState().String(),
+		Flags:      uint32(link.SpanContext.TraceFlags()),
+	}
+	l.Attrs, l.DroppedAttrs = convCappedAttrs(maxSpan.LinkAttrs, link.Attributes)
+
+	return l
+}
+
+func (s *span) SetName(name string) {
+	if s == nil || !s.sampled.Load() {
+		return
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.span.Name = name
+}
+
+func (*span) TracerProvider() trace.TracerProvider { return TracerProvider() }

vendor/go.opentelemetry.io/auto/sdk/tracer.go

@@ -0,0 +1,124 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package sdk
+
+import (
+	"context"
+	"time"
+
+	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/noop"
+
+	"go.opentelemetry.io/auto/sdk/internal/telemetry"
+)
+
+type tracer struct {
+	noop.Tracer
+
+	name, schemaURL, version string
+}
+
+var _ trace.Tracer = tracer{}
+
+func (t tracer) Start(ctx context.Context, name string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	var psc trace.SpanContext
+	sampled := true
+	span := new(span)
+
+	// Ask eBPF for sampling decision and span context info.
+	t.start(ctx, span, &psc, &sampled, &span.spanContext)
+
+	span.sampled.Store(sampled)
+
+	ctx = trace.ContextWithSpan(ctx, span)
+
+	if sampled {
+		// Only build traces if sampled.
+		cfg := trace.NewSpanStartConfig(opts...)
+		span.traces, span.span = t.traces(name, cfg, span.spanContext, psc)
+	}
+
+	return ctx, span
+}
+
+// Expected to be implemented in eBPF.
+//
+//go:noinline
+func (t *tracer) start(
+	ctx context.Context,
+	spanPtr *span,
+	psc *trace.SpanContext,
+	sampled *bool,
+	sc *trace.SpanContext,
+) {
+	start(ctx, spanPtr, psc, sampled, sc)
+}
+
+// start is used for testing.
+var start = func(context.Context, *span, *trace.SpanContext, *bool, *trace.SpanContext) {}
+
+func (t tracer) traces(name string, cfg trace.SpanConfig, sc, psc trace.SpanContext) (*telemetry.Traces, *telemetry.Span) {
+	span := &telemetry.Span{
+		TraceID:      telemetry.TraceID(sc.TraceID()),
+		SpanID:       telemetry.SpanID(sc.SpanID()),
+		Flags:        uint32(sc.TraceFlags()),
+		TraceState:   sc.TraceState().String(),
+		ParentSpanID: telemetry.SpanID(psc.SpanID()),
+		Name:         name,
+		Kind:         spanKind(cfg.SpanKind()),
+	}
+
+	span.Attrs, span.DroppedAttrs = convCappedAttrs(maxSpan.Attrs, cfg.Attributes())
+
+	links := cfg.Links()
+	if limit := maxSpan.Links; limit == 0 {
+		span.DroppedLinks = uint32(len(links))
+	} else {
+		if limit > 0 {
+			n := max(len(links)-limit, 0)
+			span.DroppedLinks = uint32(n)
+			links = links[n:]
+		}
+		span.Links = convLinks(links)
+	}
+
+	if t := cfg.Timestamp(); !t.IsZero() {
+		span.StartTime = cfg.Timestamp()
+	} else {
+		span.StartTime = time.Now()
+	}
+
+	return &telemetry.Traces{
+		ResourceSpans: []*telemetry.ResourceSpans{
+			{
+				ScopeSpans: []*telemetry.ScopeSpans{
+					{
+						Scope: &telemetry.Scope{
+							Name:    t.name,
+							Version: t.version,
+						},
+						Spans:     []*telemetry.Span{span},
+						SchemaURL: t.schemaURL,
+					},
+				},
+			},
+		},
+	}, span
+}
+
+func spanKind(kind trace.SpanKind) telemetry.SpanKind {
+	switch kind {
+	case trace.SpanKindInternal:
+		return telemetry.SpanKindInternal
+	case trace.SpanKindServer:
+		return telemetry.SpanKindServer
+	case trace.SpanKindClient:
+		return telemetry.SpanKindClient
+	case trace.SpanKindProducer:
+		return telemetry.SpanKindProducer
+	case trace.SpanKindConsumer:
+		return telemetry.SpanKindConsumer
+	}
+	return telemetry.SpanKind(0) // undefined.
+}

vendor/go.opentelemetry.io/auto/sdk/tracer_provider.go

@@ -0,0 +1,33 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package sdk
+
+import (
+	"go.opentelemetry.io/otel/trace"
+	"go.opentelemetry.io/otel/trace/noop"
+)
+
+// TracerProvider returns an auto-instrumentable [trace.TracerProvider].
+//
+// If an [go.opentelemetry.io/auto.Instrumentation] is configured to instrument
+// the process using the returned TracerProvider, all of the telemetry it
+// produces will be processed and handled by that Instrumentation. By default,
+// if no Instrumentation instruments the TracerProvider it will not generate
+// any trace telemetry.
+func TracerProvider() trace.TracerProvider { return tracerProviderInstance }
+
+var tracerProviderInstance = new(tracerProvider)
+
+type tracerProvider struct{ noop.TracerProvider }
+
+var _ trace.TracerProvider = tracerProvider{}
+
+func (p tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
+	cfg := trace.NewTracerConfig(opts...)
+	return tracer{
+		name:      name,
+		version:   cfg.InstrumentationVersion(),
+		schemaURL: cfg.SchemaURL(),
+	}
+}

vendor/go.opentelemetry.io/otel/.golangci.yml

@@ -22,6 +22,7 @@ linters:
     - govet
     - ineffassign
     - misspell
+    - perfsprint
     - revive
     - staticcheck
     - tenv
@@ -30,6 +31,7 @@ linters:
     - unconvert
     - unused
     - unparam
+    - usestdlibvars
 
 issues:
   # Maximum issues count per one linter.
@@ -61,10 +63,11 @@ issues:
       text: "calls to (.+) only in main[(][)] or init[(][)] functions"
       linters:
         - revive
-    # It's okay to not run gosec in a test.
+    # It's okay to not run gosec and perfsprint in a test.
     - path: _test\.go
       linters:
         - gosec
+        - perfsprint
     # Ignoring gosec G404: Use of weak random number generator (math/rand instead of crypto/rand)
     # as we commonly use it in tests and examples.
     - text: "G404:"
@@ -95,6 +98,13 @@ linters-settings:
           - pkg: "crypto/md5"
           - pkg: "crypto/sha1"
           - pkg: "crypto/**/pkix"
+      auto/sdk:
+        files:
+          - "!internal/global/trace.go"
+          - "~internal/global/trace_test.go"
+        deny:
+          - pkg: "go.opentelemetry.io/auto/sdk"
+            desc: Do not use SDK from automatic instrumentation.
       otlp-internal:
         files:
           - "!**/exporters/otlp/internal/**/*.go"
@@ -154,6 +164,12 @@ linters-settings:
     locale: US
     ignore-words:
       - cancelled
+  perfsprint:
+    err-error: true
+    errorf: true
+    int-conversion: true
+    sprintf1: true
+    strconcat: true
   revive:
     # Sets the default failure confidence.
     # This means that linting errors with less than 0.8 confidence will be ignored.

vendor/go.opentelemetry.io/otel/CHANGELOG.md

@@ -11,6 +11,47 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 <!-- Released section -->
 <!-- Don't change this section unless doing release -->
 
+## [1.34.0/0.56.0/0.10.0] 2025-01-17
+
+### Changed
+
+- Remove the notices from `Logger` to make the whole Logs API user-facing in `go.opentelemetry.io/otel/log`. (#6167)
+
+### Fixed
+
+- Relax minimum Go version to 1.22.0 in various modules. (#6073)
+- The `Type` name logged for the `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc` client is corrected from `otlphttpgrpc` to `otlptracegrpc`. (#6143)
+- The `Type` name logged for the `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlphttpgrpc` client is corrected from `otlphttphttp` to `otlptracehttp`. (#6143)
+
+## [1.33.0/0.55.0/0.9.0/0.0.12] 2024-12-12
+
+### Added
+
+- Add `Reset` method to `SpanRecorder` in `go.opentelemetry.io/otel/sdk/trace/tracetest`. (#5994)
+- Add `EnabledInstrument` interface in `go.opentelemetry.io/otel/sdk/metric/internal/x`.
+  This is an experimental interface that is implemented by synchronous instruments provided by `go.opentelemetry.io/otel/sdk/metric`.
+  Users can use it to avoid performing computationally expensive operations when recording measurements.
+  It does not fall within the scope of the OpenTelemetry Go versioning and stability [policy](./VERSIONING.md) and it may be changed in backwards incompatible ways or removed in feature releases. (#6016)
+
+### Changed
+
+- The default global API now supports full auto-instrumentation from the `go.opentelemetry.io/auto` package.
+  See that package for more information. (#5920)
+- Propagate non-retryable error messages to client in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#5929)
+- Propagate non-retryable error messages to client in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#5929)
+- Propagate non-retryable error messages to client in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#5929)
+- Performance improvements for attribute value `AsStringSlice`, `AsFloat64Slice`, `AsInt64Slice`, `AsBoolSlice`. (#6011)
+- Change `EnabledParameters` to have a `Severity` field instead of a getter and setter in `go.opentelemetry.io/otel/log`. (#6009)
+
+### Fixed
+
+- Fix inconsistent request body closing in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#5954)
+- Fix inconsistent request body closing in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#5954)
+- Fix inconsistent request body closing in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#5954)
+- Fix invalid exemplar keys in `go.opentelemetry.io/otel/exporters/prometheus`. (#5995)
+- Fix attribute value truncation in `go.opentelemetry.io/otel/sdk/trace`. (#5997)
+- Fix attribute value truncation in `go.opentelemetry.io/otel/sdk/log`. (#6032)
+
 ## [1.32.0/0.54.0/0.8.0/0.0.11] 2024-11-08
 
 ### Added
@@ -3156,7 +3197,9 @@ It contains api and sdk for trace and meter.
 - CircleCI build CI manifest files.
 - CODEOWNERS file to track owners of this project.
 
-[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.32.0...HEAD
+[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.34.0...HEAD
+[1.34.0/0.56.0/0.10.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.34.0
+[1.33.0/0.55.0/0.9.0/0.0.12]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.33.0
 [1.32.0/0.54.0/0.8.0/0.0.11]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.32.0
 [1.31.0/0.53.0/0.7.0/0.0.10]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.31.0
 [1.30.0/0.52.0/0.6.0/0.0.9]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.30.0

vendor/go.opentelemetry.io/otel/Makefile

@@ -14,8 +14,8 @@ TIMEOUT = 60
 .DEFAULT_GOAL := precommit
 
 .PHONY: precommit ci
-precommit: generate license-check misspell go-mod-tidy golangci-lint-fix verify-readmes verify-mods test-default
+precommit: generate toolchain-check license-check misspell go-mod-tidy golangci-lint-fix verify-readmes verify-mods test-default
-ci: generate license-check lint vanity-import-check verify-readmes verify-mods build test-default check-clean-work-tree test-coverage
+ci: generate toolchain-check license-check lint vanity-import-check verify-readmes verify-mods build test-default check-clean-work-tree test-coverage
 
 # Tools
 
@@ -235,6 +235,16 @@ govulncheck/%: $(GOVULNCHECK)
 codespell: $(CODESPELL)
 	@$(DOCKERPY) $(CODESPELL)
 
+.PHONY: toolchain-check
+toolchain-check:
+	@toolchainRes=$$(for f in $(ALL_GO_MOD_DIRS); do \
+	           awk '/^toolchain/ { found=1; next } END { if (found) print FILENAME }' $$f/go.mod; \
+	done); \
+	if [ -n "$${toolchainRes}" ]; then \
+			echo "toolchain checking failed:"; echo "$${toolchainRes}"; \
+			exit 1; \
+	fi
+
 .PHONY: license-check
 license-check:
 	@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*' ! -path './.git/*' ) ; do \

vendor/go.opentelemetry.io/otel/README.md

@@ -1,6 +1,6 @@
 # OpenTelemetry-Go
 
-[![CI](https://github.com/open-telemetry/opentelemetry-go/workflows/ci/badge.svg)](https://github.com/open-telemetry/opentelemetry-go/actions?query=workflow%3Aci+branch%3Amain)
+[![ci](https://github.com/open-telemetry/opentelemetry-go/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/open-telemetry/opentelemetry-go/actions/workflows/ci.yml)
 [![codecov.io](https://codecov.io/gh/open-telemetry/opentelemetry-go/coverage.svg?branch=main)](https://app.codecov.io/gh/open-telemetry/opentelemetry-go?branch=main)
 [![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel)](https://pkg.go.dev/go.opentelemetry.io/otel)
 [![Go Report Card](https://goreportcard.com/badge/go.opentelemetry.io/otel)](https://goreportcard.com/report/go.opentelemetry.io/otel)

vendor/go.opentelemetry.io/otel/RELEASING.md

@@ -130,6 +130,6 @@ Importantly, bump any package versions referenced to be the latest one you just
 
 Bump the dependencies in the following Go services:
 
-- [`accountingservice`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/accountingservice)
+- [`accounting`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/accounting)
-- [`checkoutservice`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/checkoutservice)
+- [`checkoutservice`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/checkout)
-- [`productcatalogservice`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/productcatalogservice)
+- [`productcatalogservice`](https://github.com/open-telemetry/opentelemetry-demo/tree/main/src/product-catalog)

vendor/go.opentelemetry.io/otel/VERSIONING.md

@@ -26,7 +26,7 @@ is designed so the following goals can be achieved.
       go.opentelemetry.io/otel/v2 v2.0.1`) and in the package import path
       (e.g., `import "go.opentelemetry.io/otel/v2/trace"`). This includes the
       paths used in `go get` commands (e.g., `go get
-      go.opentelemetry.io/otel/v2@v2.0.1`.  Note there is both a `/v2` and a
+      go.opentelemetry.io/otel/v2@v2.0.1`).  Note there is both a `/v2` and a
       `@v2.0.1` in that example. One way to think about it is that the module
       name now includes the `/v2`, so include `/v2` whenever you are using the
       module name).

vendor/go.opentelemetry.io/otel/baggage/baggage.go

@@ -355,7 +355,7 @@ func parseMember(member string) (Member, error) {
 }
 
 // replaceInvalidUTF8Sequences replaces invalid UTF-8 sequences with '<27>'.
-func replaceInvalidUTF8Sequences(cap int, unescapeVal string) string {
+func replaceInvalidUTF8Sequences(c int, unescapeVal string) string {
 	if utf8.ValidString(unescapeVal) {
 		return unescapeVal
 	}
@@ -363,7 +363,7 @@ func replaceInvalidUTF8Sequences(cap int, unescapeVal string) string {
 	// https://github.com/w3c/baggage/blob/8c215efbeebd3fa4b1aceb937a747e56444f22f3/baggage/HTTP_HEADER_FORMAT.md?plain=1#L69
 
 	var b strings.Builder
-	b.Grow(cap)
+	b.Grow(c)
 	for i := 0; i < len(unescapeVal); {
 		r, size := utf8.DecodeRuneInString(unescapeVal[i:])
 		if r == utf8.RuneError && size == 1 {

vendor/go.opentelemetry.io/otel/codes/codes.go

@@ -5,6 +5,7 @@ package codes // import "go.opentelemetry.io/otel/codes"
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"strconv"
 )
@@ -63,7 +64,7 @@ func (c *Code) UnmarshalJSON(b []byte) error {
 		return nil
 	}
 	if c == nil {
-		return fmt.Errorf("nil receiver passed to UnmarshalJSON")
+		return errors.New("nil receiver passed to UnmarshalJSON")
 	}
 
 	var x interface{}

vendor/go.opentelemetry.io/otel/internal/attribute/attribute.go

@@ -49,12 +49,11 @@ func AsBoolSlice(v interface{}) []bool {
 	if rv.Type().Kind() != reflect.Array {
 		return nil
 	}
-	var zero bool
+	cpy := make([]bool, rv.Len())
-	correctLen := rv.Len()
+	if len(cpy) > 0 {
-	correctType := reflect.ArrayOf(correctLen, reflect.TypeOf(zero))
+		_ = reflect.Copy(reflect.ValueOf(cpy), rv)
-	cpy := reflect.New(correctType)
+	}
-	_ = reflect.Copy(cpy.Elem(), rv)
+	return cpy
-	return cpy.Elem().Slice(0, correctLen).Interface().([]bool)
 }
 
 // AsInt64Slice converts an int64 array into a slice into with same elements as array.
@@ -63,12 +62,11 @@ func AsInt64Slice(v interface{}) []int64 {
 	if rv.Type().Kind() != reflect.Array {
 		return nil
 	}
-	var zero int64
+	cpy := make([]int64, rv.Len())
-	correctLen := rv.Len()
+	if len(cpy) > 0 {
-	correctType := reflect.ArrayOf(correctLen, reflect.TypeOf(zero))
+		_ = reflect.Copy(reflect.ValueOf(cpy), rv)
-	cpy := reflect.New(correctType)
+	}
-	_ = reflect.Copy(cpy.Elem(), rv)
+	return cpy
-	return cpy.Elem().Slice(0, correctLen).Interface().([]int64)
 }
 
 // AsFloat64Slice converts a float64 array into a slice into with same elements as array.
@@ -77,12 +75,11 @@ func AsFloat64Slice(v interface{}) []float64 {
 	if rv.Type().Kind() != reflect.Array {
 		return nil
 	}
-	var zero float64
+	cpy := make([]float64, rv.Len())
-	correctLen := rv.Len()
+	if len(cpy) > 0 {
-	correctType := reflect.ArrayOf(correctLen, reflect.TypeOf(zero))
+		_ = reflect.Copy(reflect.ValueOf(cpy), rv)
-	cpy := reflect.New(correctType)
+	}
-	_ = reflect.Copy(cpy.Elem(), rv)
+	return cpy
-	return cpy.Elem().Slice(0, correctLen).Interface().([]float64)
 }
 
 // AsStringSlice converts a string array into a slice into with same elements as array.
@@ -91,10 +88,9 @@ func AsStringSlice(v interface{}) []string {
 	if rv.Type().Kind() != reflect.Array {
 		return nil
 	}
-	var zero string
+	cpy := make([]string, rv.Len())
-	correctLen := rv.Len()
+	if len(cpy) > 0 {
-	correctType := reflect.ArrayOf(correctLen, reflect.TypeOf(zero))
+		_ = reflect.Copy(reflect.ValueOf(cpy), rv)
-	cpy := reflect.New(correctType)
+	}
-	_ = reflect.Copy(cpy.Elem(), rv)
+	return cpy
-	return cpy.Elem().Slice(0, correctLen).Interface().([]string)
 }

vendor/go.opentelemetry.io/otel/internal/global/trace.go

@@ -25,6 +25,7 @@ import (
 	"sync"
 	"sync/atomic"
 
+	"go.opentelemetry.io/auto/sdk"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/trace"
@@ -145,6 +146,30 @@ func (t *tracer) Start(ctx context.Context, name string, opts ...trace.SpanStart
 		return delegate.(trace.Tracer).Start(ctx, name, opts...)
 	}
 
+	return t.newSpan(ctx, autoInstEnabled, name, opts)
+}
+
+// autoInstEnabled determines if the auto-instrumentation SDK span is returned
+// from the tracer when not backed by a delegate and auto-instrumentation has
+// attached to this process.
+//
+// The auto-instrumentation is expected to overwrite this value to true when it
+// attaches. By default, this will point to false and mean a tracer will return
+// a nonRecordingSpan by default.
+var autoInstEnabled = new(bool)
+
+func (t *tracer) newSpan(ctx context.Context, autoSpan *bool, name string, opts []trace.SpanStartOption) (context.Context, trace.Span) {
+	// autoInstEnabled is passed to newSpan via the autoSpan parameter. This is
+	// so the auto-instrumentation can define a uprobe for (*t).newSpan and be
+	// provided with the address of the bool autoInstEnabled points to. It
+	// needs to be a parameter so that pointer can be reliably determined, it
+	// should not be read from the global.
+
+	if *autoSpan {
+		tracer := sdk.TracerProvider().Tracer(t.name, t.opts...)
+		return tracer.Start(ctx, name, opts...)
+	}
+
 	s := nonRecordingSpan{sc: trace.SpanContextFromContext(ctx), tracer: t}
 	ctx = trace.ContextWithSpan(ctx, s)
 	return ctx, s

vendor/go.opentelemetry.io/otel/renovate.json

@@ -14,12 +14,6 @@
       "matchDepTypes": ["indirect"],
       "enabled": true
     },
-    {
-      "matchFileNames": ["internal/tools/**"],
-      "matchManagers": ["gomod"],
-      "matchDepTypes": ["indirect"],
-      "enabled": false
-    },
     {
       "matchPackageNames": ["google.golang.org/genproto/googleapis/**"],
       "groupName": "googleapis"

vendor/go.opentelemetry.io/otel/sdk/trace/sampler_env.go

@@ -5,7 +5,6 @@ package trace // import "go.opentelemetry.io/otel/sdk/trace"
 
 import (
 	"errors"
-	"fmt"
 	"os"
 	"strconv"
 	"strings"
@@ -26,7 +25,7 @@ const (
 type errUnsupportedSampler string
 
 func (e errUnsupportedSampler) Error() string {
-	return fmt.Sprintf("unsupported sampler: %s", string(e))
+	return "unsupported sampler: " + string(e)
 }
 
 var (
@@ -39,7 +38,7 @@ type samplerArgParseError struct {
 }
 
 func (e samplerArgParseError) Error() string {
-	return fmt.Sprintf("parsing sampler argument: %s", e.parseErr.Error())
+	return "parsing sampler argument: " + e.parseErr.Error()
 }
 
 func (e samplerArgParseError) Unwrap() error {

vendor/go.opentelemetry.io/otel/sdk/trace/span.go

@@ -347,54 +347,99 @@ func truncateAttr(limit int, attr attribute.KeyValue) attribute.KeyValue {
 	}
 	switch attr.Value.Type() {
 	case attribute.STRING:
-		if v := attr.Value.AsString(); len(v) > limit {
+		v := attr.Value.AsString()
-			return attr.Key.String(safeTruncate(v, limit))
+		return attr.Key.String(truncate(limit, v))
-		}
 	case attribute.STRINGSLICE:
 		v := attr.Value.AsStringSlice()
 		for i := range v {
-			if len(v[i]) > limit {
+			v[i] = truncate(limit, v[i])
-				v[i] = safeTruncate(v[i], limit)
-			}
 		}
 		return attr.Key.StringSlice(v)
 	}
 	return attr
 }
 
-// safeTruncate truncates the string and guarantees valid UTF-8 is returned.
+// truncate returns a truncated version of s such that it contains less than
-func safeTruncate(input string, limit int) string {
+// the limit number of characters. Truncation is applied by returning the limit
-	if trunc, ok := safeTruncateValidUTF8(input, limit); ok {
+// number of valid characters contained in s.
-		return trunc
+//
+// If limit is negative, it returns the original string.
+//
+// UTF-8 is supported. When truncating, all invalid characters are dropped
+// before applying truncation.
+//
+// If s already contains less than the limit number of bytes, it is returned
+// unchanged. No invalid characters are removed.
+func truncate(limit int, s string) string {
+	// This prioritize performance in the following order based on the most
+	// common expected use-cases.
+	//
+	//  - Short values less than the default limit (128).
+	//  - Strings with valid encodings that exceed the limit.
+	//  - No limit.
+	//  - Strings with invalid encodings that exceed the limit.
+	if limit < 0 || len(s) <= limit {
+		return s
 	}
-	trunc, _ := safeTruncateValidUTF8(strings.ToValidUTF8(input, ""), limit)
-	return trunc
-}
 
-// safeTruncateValidUTF8 returns a copy of the input string safely truncated to
+	// Optimistically, assume all valid UTF-8.
-// limit. The truncation is ensured to occur at the bounds of complete UTF-8
+	var b strings.Builder
-// characters. If invalid encoding of UTF-8 is encountered, input is returned
+	count := 0
-// with false, otherwise, the truncated input will be returned with true.
+	for i, c := range s {
-func safeTruncateValidUTF8(input string, limit int) (string, bool) {
+		if c != utf8.RuneError {
-	for cnt := 0; cnt <= limit; {
+			count++
-		r, size := utf8.DecodeRuneInString(input[cnt:])
+			if count > limit {
-		if r == utf8.RuneError {
+				return s[:i]
-			return input, false
+			}
+			continue
 		}
 
-		if cnt+size > limit {
+		_, size := utf8.DecodeRuneInString(s[i:])
-			return input[:cnt], true
+		if size == 1 {
+			// Invalid encoding.
+			b.Grow(len(s) - 1)
+			_, _ = b.WriteString(s[:i])
+			s = s[i:]
+			break
 		}
-		cnt += size
 	}
-	return input, true
+
+	// Fast-path, no invalid input.
+	if b.Cap() == 0 {
+		return s
+	}
+
+	// Truncate while validating UTF-8.
+	for i := 0; i < len(s) && count < limit; {
+		c := s[i]
+		if c < utf8.RuneSelf {
+			// Optimization for single byte runes (common case).
+			_ = b.WriteByte(c)
+			i++
+			count++
+			continue
+		}
+
+		_, size := utf8.DecodeRuneInString(s[i:])
+		if size == 1 {
+			// We checked for all 1-byte runes above, this is a RuneError.
+			i++
+			continue
+		}
+
+		_, _ = b.WriteString(s[i : i+size])
+		i += size
+		count++
+	}
+
+	return b.String()
 }
 
 // End ends the span. This method does nothing if the span is already ended or
 // is not being recorded.
 //
-// The only SpanOption currently supported is WithTimestamp which will set the
+// The only SpanEndOption currently supported are [trace.WithTimestamp], and
-// end time for a Span's life-cycle.
+// [trace.WithStackTrace].
 //
 // If this method is called while panicking an error event is added to the
 // Span before ending it and the panic is continued.

vendor/go.opentelemetry.io/otel/sdk/version.go

@@ -5,5 +5,5 @@ package sdk // import "go.opentelemetry.io/otel/sdk"
 
 // Version is the current release version of the OpenTelemetry SDK in use.
 func Version() string {
-	return "1.32.0"
+	return "1.34.0"
 }

vendor/go.opentelemetry.io/otel/trace/config.go

@@ -213,7 +213,7 @@ var _ SpanStartEventOption = attributeOption{}
 
 // WithAttributes adds the attributes related to a span life-cycle event.
 // These attributes are used to describe the work a Span represents when this
-// option is provided to a Span's start or end events. Otherwise, these
+// option is provided to a Span's start event. Otherwise, these
 // attributes provide additional information about the event being recorded
 // (e.g. error, state change, processing progress, system event).
 //

vendor/go.opentelemetry.io/otel/version.go

@@ -5,5 +5,5 @@ package otel // import "go.opentelemetry.io/otel"
 
 // Version is the current release version of OpenTelemetry in use.
 func Version() string {
-	return "1.32.0"
+	return "1.34.0"
 }

vendor/go.opentelemetry.io/otel/versions.yaml

@@ -3,7 +3,7 @@
 
 module-sets:
   stable-v1:
-    version: v1.32.0
+    version: v1.34.0
     modules:
       - go.opentelemetry.io/otel
       - go.opentelemetry.io/otel/bridge/opencensus
@@ -23,11 +23,11 @@ module-sets:
       - go.opentelemetry.io/otel/sdk/metric
       - go.opentelemetry.io/otel/trace
   experimental-metrics:
-    version: v0.54.0
+    version: v0.56.0
     modules:
       - go.opentelemetry.io/otel/exporters/prometheus
   experimental-logs:
-    version: v0.8.0
+    version: v0.10.0
     modules:
       - go.opentelemetry.io/otel/log
       - go.opentelemetry.io/otel/sdk/log
@@ -35,7 +35,7 @@ module-sets:
       - go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp
       - go.opentelemetry.io/otel/exporters/stdout/stdoutlog
   experimental-schema:
-    version: v0.0.11
+    version: v0.0.12
     modules:
       - go.opentelemetry.io/otel/schema
 excluded-modules:

vendor/golang.org/x/oauth2/oauth2.go

@@ -56,7 +56,7 @@ type Config struct {
 	// the OAuth flow, after the resource owner's URLs.
 	RedirectURL string
 
-	// Scope specifies optional requested permissions.
+	// Scopes specifies optional requested permissions.
 	Scopes []string
 
 	// authStyleCache caches which auth style to use when Endpoint.AuthStyle is

vendor/google.golang.org/genproto/googleapis/api/annotations/client.pb.go

@@ -180,6 +180,8 @@ type CommonLanguageSettings struct {
 	ReferenceDocsUri string `protobuf:"bytes,1,opt,name=reference_docs_uri,json=referenceDocsUri,proto3" json:"reference_docs_uri,omitempty"`
 	// The destination where API teams want this client library to be published.
 	Destinations []ClientLibraryDestination `protobuf:"varint,2,rep,packed,name=destinations,proto3,enum=google.api.ClientLibraryDestination" json:"destinations,omitempty"`
+	// Configuration for which RPCs should be generated in the GAPIC client.
+	SelectiveGapicGeneration *SelectiveGapicGeneration `protobuf:"bytes,3,opt,name=selective_gapic_generation,json=selectiveGapicGeneration,proto3" json:"selective_gapic_generation,omitempty"`
 }
 
 func (x *CommonLanguageSettings) Reset() {
@@ -229,6 +231,13 @@ func (x *CommonLanguageSettings) GetDestinations() []ClientLibraryDestination {
 	return nil
 }
 
+func (x *CommonLanguageSettings) GetSelectiveGapicGeneration() *SelectiveGapicGeneration {
+	if x != nil {
+		return x.SelectiveGapicGeneration
+	}
+	return nil
+}
+
 // Details about how and where to publish client libraries.
 type ClientLibrarySettings struct {
 	state         protoimpl.MessageState
@@ -984,6 +993,16 @@ type GoSettings struct {
 
 	// Some settings.
 	Common *CommonLanguageSettings `protobuf:"bytes,1,opt,name=common,proto3" json:"common,omitempty"`
+	// Map of service names to renamed services. Keys are the package relative
+	// service names and values are the name to be used for the service client
+	// and call options.
+	//
+	// publishing:
+	//
+	//	go_settings:
+	//	  renamed_services:
+	//	    Publisher: TopicAdmin
+	RenamedServices map[string]string `protobuf:"bytes,2,rep,name=renamed_services,json=renamedServices,proto3" json:"renamed_services,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
 func (x *GoSettings) Reset() {
@@ -1025,6 +1044,13 @@ func (x *GoSettings) GetCommon() *CommonLanguageSettings {
 	return nil
 }
 
+func (x *GoSettings) GetRenamedServices() map[string]string {
+	if x != nil {
+		return x.RenamedServices
+	}
+	return nil
+}
+
 // Describes the generator configuration for a method.
 type MethodSettings struct {
 	state         protoimpl.MessageState
@@ -1123,6 +1149,57 @@ func (x *MethodSettings) GetAutoPopulatedFields() []string {
 	return nil
 }
 
+// This message is used to configure the generation of a subset of the RPCs in
+// a service for client libraries.
+type SelectiveGapicGeneration struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// An allowlist of the fully qualified names of RPCs that should be included
+	// on public client surfaces.
+	Methods []string `protobuf:"bytes,1,rep,name=methods,proto3" json:"methods,omitempty"`
+}
+
+func (x *SelectiveGapicGeneration) Reset() {
+	*x = SelectiveGapicGeneration{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_google_api_client_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SelectiveGapicGeneration) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SelectiveGapicGeneration) ProtoMessage() {}
+
+func (x *SelectiveGapicGeneration) ProtoReflect() protoreflect.Message {
+	mi := &file_google_api_client_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SelectiveGapicGeneration.ProtoReflect.Descriptor instead.
+func (*SelectiveGapicGeneration) Descriptor() ([]byte, []int) {
+	return file_google_api_client_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *SelectiveGapicGeneration) GetMethods() []string {
+	if x != nil {
+		return x.Methods
+	}
+	return nil
+}
+
 // Experimental features to be included during client library generation.
 // These fields will be deprecated once the feature graduates and is enabled
 // by default.
@@ -1136,12 +1213,17 @@ type PythonSettings_ExperimentalFeatures struct {
 	// This feature will be enabled by default 1 month after launching the
 	// feature in preview packages.
 	RestAsyncIoEnabled bool `protobuf:"varint,1,opt,name=rest_async_io_enabled,json=restAsyncIoEnabled,proto3" json:"rest_async_io_enabled,omitempty"`
+	// Enables generation of protobuf code using new types that are more
+	// Pythonic which are included in `protobuf>=5.29.x`. This feature will be
+	// enabled by default 1 month after launching the feature in preview
+	// packages.
+	ProtobufPythonicTypesEnabled bool `protobuf:"varint,2,opt,name=protobuf_pythonic_types_enabled,json=protobufPythonicTypesEnabled,proto3" json:"protobuf_pythonic_types_enabled,omitempty"`
 }
 
 func (x *PythonSettings_ExperimentalFeatures) Reset() {
 	*x = PythonSettings_ExperimentalFeatures{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_google_api_client_proto_msgTypes[13]
+		mi := &file_google_api_client_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1154,7 +1236,7 @@ func (x *PythonSettings_ExperimentalFeatures) String() string {
 func (*PythonSettings_ExperimentalFeatures) ProtoMessage() {}
 
 func (x *PythonSettings_ExperimentalFeatures) ProtoReflect() protoreflect.Message {
-	mi := &file_google_api_client_proto_msgTypes[13]
+	mi := &file_google_api_client_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1177,6 +1259,13 @@ func (x *PythonSettings_ExperimentalFeatures) GetRestAsyncIoEnabled() bool {
 	return false
 }
 
+func (x *PythonSettings_ExperimentalFeatures) GetProtobufPythonicTypesEnabled() bool {
+	if x != nil {
+		return x.ProtobufPythonicTypesEnabled
+	}
+	return false
+}
+
 // Describes settings to use when generating API methods that use the
 // long-running operation pattern.
 // All default values below are from those used in the client library
@@ -1205,7 +1294,7 @@ type MethodSettings_LongRunning struct {
 func (x *MethodSettings_LongRunning) Reset() {
 	*x = MethodSettings_LongRunning{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_google_api_client_proto_msgTypes[16]
+		mi := &file_google_api_client_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1218,7 +1307,7 @@ func (x *MethodSettings_LongRunning) String() string {
 func (*MethodSettings_LongRunning) ProtoMessage() {}
 
 func (x *MethodSettings_LongRunning) ProtoReflect() protoreflect.Message {
-	mi := &file_google_api_client_proto_msgTypes[16]
+	mi := &file_google_api_client_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1406,7 +1495,7 @@ var file_google_api_client_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1675,7 +1788,7 @@ func file_google_api_client_proto_rawDescGZIP() []byte {
 }
 
 var file_google_api_client_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_google_api_client_proto_msgTypes = make([]protoimpl.MessageInfo, 17)
+var file_google_api_client_proto_msgTypes = make([]protoimpl.MessageInfo, 19)
 var file_google_api_client_proto_goTypes = []interface{}{
 	(ClientLibraryOrganization)(0),              // 0: google.api.ClientLibraryOrganization
 	(ClientLibraryDestination)(0),               // 1: google.api.ClientLibraryDestination
@@ -1691,55 +1804,59 @@ var file_google_api_client_proto_goTypes = []interface{}{
 	(*RubySettings)(nil),                        // 11: google.api.RubySettings
 	(*GoSettings)(nil),                          // 12: google.api.GoSettings
 	(*MethodSettings)(nil),                      // 13: google.api.MethodSettings
-	nil,                                         // 14: google.api.JavaSettings.ServiceClassNamesEntry
+	(*SelectiveGapicGeneration)(nil),            // 14: google.api.SelectiveGapicGeneration
-	(*PythonSettings_ExperimentalFeatures)(nil), // 15: google.api.PythonSettings.ExperimentalFeatures
+	nil,                                         // 15: google.api.JavaSettings.ServiceClassNamesEntry
-	nil,                                 // 16: google.api.DotnetSettings.RenamedServicesEntry
+	(*PythonSettings_ExperimentalFeatures)(nil), // 16: google.api.PythonSettings.ExperimentalFeatures
-	nil,                                 // 17: google.api.DotnetSettings.RenamedResourcesEntry
+	nil,                                 // 17: google.api.DotnetSettings.RenamedServicesEntry
-	(*MethodSettings_LongRunning)(nil),  // 18: google.api.MethodSettings.LongRunning
+	nil,                                 // 18: google.api.DotnetSettings.RenamedResourcesEntry
-	(api.LaunchStage)(0),                // 19: google.api.LaunchStage
+	nil,                                 // 19: google.api.GoSettings.RenamedServicesEntry
-	(*durationpb.Duration)(nil),         // 20: google.protobuf.Duration
+	(*MethodSettings_LongRunning)(nil),  // 20: google.api.MethodSettings.LongRunning
-	(*descriptorpb.MethodOptions)(nil),  // 21: google.protobuf.MethodOptions
+	(api.LaunchStage)(0),                // 21: google.api.LaunchStage
-	(*descriptorpb.ServiceOptions)(nil), // 22: google.protobuf.ServiceOptions
+	(*durationpb.Duration)(nil),         // 22: google.protobuf.Duration
+	(*descriptorpb.MethodOptions)(nil),  // 23: google.protobuf.MethodOptions
+	(*descriptorpb.ServiceOptions)(nil), // 24: google.protobuf.ServiceOptions
 }
 var file_google_api_client_proto_depIdxs = []int32{
 	1,  // 0: google.api.CommonLanguageSettings.destinations:type_name -> google.api.ClientLibraryDestination
-	19, // 1: google.api.ClientLibrarySettings.launch_stage:type_name -> google.api.LaunchStage
+	14, // 1: google.api.CommonLanguageSettings.selective_gapic_generation:type_name -> google.api.SelectiveGapicGeneration
-	5,  // 2: google.api.ClientLibrarySettings.java_settings:type_name -> google.api.JavaSettings
+	21, // 2: google.api.ClientLibrarySettings.launch_stage:type_name -> google.api.LaunchStage
-	6,  // 3: google.api.ClientLibrarySettings.cpp_settings:type_name -> google.api.CppSettings
+	5,  // 3: google.api.ClientLibrarySettings.java_settings:type_name -> google.api.JavaSettings
-	7,  // 4: google.api.ClientLibrarySettings.php_settings:type_name -> google.api.PhpSettings
+	6,  // 4: google.api.ClientLibrarySettings.cpp_settings:type_name -> google.api.CppSettings
-	8,  // 5: google.api.ClientLibrarySettings.python_settings:type_name -> google.api.PythonSettings
+	7,  // 5: google.api.ClientLibrarySettings.php_settings:type_name -> google.api.PhpSettings
-	9,  // 6: google.api.ClientLibrarySettings.node_settings:type_name -> google.api.NodeSettings
+	8,  // 6: google.api.ClientLibrarySettings.python_settings:type_name -> google.api.PythonSettings
-	10, // 7: google.api.ClientLibrarySettings.dotnet_settings:type_name -> google.api.DotnetSettings
+	9,  // 7: google.api.ClientLibrarySettings.node_settings:type_name -> google.api.NodeSettings
-	11, // 8: google.api.ClientLibrarySettings.ruby_settings:type_name -> google.api.RubySettings
+	10, // 8: google.api.ClientLibrarySettings.dotnet_settings:type_name -> google.api.DotnetSettings
-	12, // 9: google.api.ClientLibrarySettings.go_settings:type_name -> google.api.GoSettings
+	11, // 9: google.api.ClientLibrarySettings.ruby_settings:type_name -> google.api.RubySettings
-	13, // 10: google.api.Publishing.method_settings:type_name -> google.api.MethodSettings
+	12, // 10: google.api.ClientLibrarySettings.go_settings:type_name -> google.api.GoSettings
-	0,  // 11: google.api.Publishing.organization:type_name -> google.api.ClientLibraryOrganization
+	13, // 11: google.api.Publishing.method_settings:type_name -> google.api.MethodSettings
-	3,  // 12: google.api.Publishing.library_settings:type_name -> google.api.ClientLibrarySettings
+	0,  // 12: google.api.Publishing.organization:type_name -> google.api.ClientLibraryOrganization
-	14, // 13: google.api.JavaSettings.service_class_names:type_name -> google.api.JavaSettings.ServiceClassNamesEntry
+	3,  // 13: google.api.Publishing.library_settings:type_name -> google.api.ClientLibrarySettings
-	2,  // 14: google.api.JavaSettings.common:type_name -> google.api.CommonLanguageSettings
+	15, // 14: google.api.JavaSettings.service_class_names:type_name -> google.api.JavaSettings.ServiceClassNamesEntry
-	2,  // 15: google.api.CppSettings.common:type_name -> google.api.CommonLanguageSettings
+	2,  // 15: google.api.JavaSettings.common:type_name -> google.api.CommonLanguageSettings
-	2,  // 16: google.api.PhpSettings.common:type_name -> google.api.CommonLanguageSettings
+	2,  // 16: google.api.CppSettings.common:type_name -> google.api.CommonLanguageSettings
-	2,  // 17: google.api.PythonSettings.common:type_name -> google.api.CommonLanguageSettings
+	2,  // 17: google.api.PhpSettings.common:type_name -> google.api.CommonLanguageSettings
-	15, // 18: google.api.PythonSettings.experimental_features:type_name -> google.api.PythonSettings.ExperimentalFeatures
+	2,  // 18: google.api.PythonSettings.common:type_name -> google.api.CommonLanguageSettings
-	2,  // 19: google.api.NodeSettings.common:type_name -> google.api.CommonLanguageSettings
+	16, // 19: google.api.PythonSettings.experimental_features:type_name -> google.api.PythonSettings.ExperimentalFeatures
-	2,  // 20: google.api.DotnetSettings.common:type_name -> google.api.CommonLanguageSettings
+	2,  // 20: google.api.NodeSettings.common:type_name -> google.api.CommonLanguageSettings
-	16, // 21: google.api.DotnetSettings.renamed_services:type_name -> google.api.DotnetSettings.RenamedServicesEntry
+	2,  // 21: google.api.DotnetSettings.common:type_name -> google.api.CommonLanguageSettings
-	17, // 22: google.api.DotnetSettings.renamed_resources:type_name -> google.api.DotnetSettings.RenamedResourcesEntry
+	17, // 22: google.api.DotnetSettings.renamed_services:type_name -> google.api.DotnetSettings.RenamedServicesEntry
-	2,  // 23: google.api.RubySettings.common:type_name -> google.api.CommonLanguageSettings
+	18, // 23: google.api.DotnetSettings.renamed_resources:type_name -> google.api.DotnetSettings.RenamedResourcesEntry
-	2,  // 24: google.api.GoSettings.common:type_name -> google.api.CommonLanguageSettings
+	2,  // 24: google.api.RubySettings.common:type_name -> google.api.CommonLanguageSettings
-	18, // 25: google.api.MethodSettings.long_running:type_name -> google.api.MethodSettings.LongRunning
+	2,  // 25: google.api.GoSettings.common:type_name -> google.api.CommonLanguageSettings
-	20, // 26: google.api.MethodSettings.LongRunning.initial_poll_delay:type_name -> google.protobuf.Duration
+	19, // 26: google.api.GoSettings.renamed_services:type_name -> google.api.GoSettings.RenamedServicesEntry
-	20, // 27: google.api.MethodSettings.LongRunning.max_poll_delay:type_name -> google.protobuf.Duration
+	20, // 27: google.api.MethodSettings.long_running:type_name -> google.api.MethodSettings.LongRunning
-	20, // 28: google.api.MethodSettings.LongRunning.total_poll_timeout:type_name -> google.protobuf.Duration
+	22, // 28: google.api.MethodSettings.LongRunning.initial_poll_delay:type_name -> google.protobuf.Duration
-	21, // 29: google.api.method_signature:extendee -> google.protobuf.MethodOptions
+	22, // 29: google.api.MethodSettings.LongRunning.max_poll_delay:type_name -> google.protobuf.Duration
-	22, // 30: google.api.default_host:extendee -> google.protobuf.ServiceOptions
+	22, // 30: google.api.MethodSettings.LongRunning.total_poll_timeout:type_name -> google.protobuf.Duration
-	22, // 31: google.api.oauth_scopes:extendee -> google.protobuf.ServiceOptions
+	23, // 31: google.api.method_signature:extendee -> google.protobuf.MethodOptions
-	22, // 32: google.api.api_version:extendee -> google.protobuf.ServiceOptions
+	24, // 32: google.api.default_host:extendee -> google.protobuf.ServiceOptions
-	33, // [33:33] is the sub-list for method output_type
+	24, // 33: google.api.oauth_scopes:extendee -> google.protobuf.ServiceOptions
-	33, // [33:33] is the sub-list for method input_type
+	24, // 34: google.api.api_version:extendee -> google.protobuf.ServiceOptions
-	33, // [33:33] is the sub-list for extension type_name
+	35, // [35:35] is the sub-list for method output_type
-	29, // [29:33] is the sub-list for extension extendee
+	35, // [35:35] is the sub-list for method input_type
-	0,  // [0:29] is the sub-list for field type_name
+	35, // [35:35] is the sub-list for extension type_name
+	31, // [31:35] is the sub-list for extension extendee
+	0,  // [0:31] is the sub-list for field type_name
 }
 
 func init() { file_google_api_client_proto_init() }
@@ -1892,7 +2009,19 @@ func file_google_api_client_proto_init() {
 				return nil
 			}
 		}
-		file_google_api_client_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+		file_google_api_client_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SelectiveGapicGeneration); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_google_api_client_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PythonSettings_ExperimentalFeatures); i {
 			case 0:
 				return &v.state
@@ -1904,7 +2033,7 @@ func file_google_api_client_proto_init() {
 				return nil
 			}
 		}
-		file_google_api_client_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+		file_google_api_client_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*MethodSettings_LongRunning); i {
 			case 0:
 				return &v.state
@@ -1923,7 +2052,7 @@ func file_google_api_client_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_google_api_client_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   17,
+			NumMessages:   19,
 			NumExtensions: 4,
 			NumServices:   0,
 		},

vendor/google.golang.org/genproto/googleapis/api/httpbody/httpbody.pb.go

@@ -159,14 +159,14 @@ var file_google_api_httpbody_proto_rawDesc = []byte{
 	0x04, 0x64, 0x61, 0x74, 0x61, 0x12, 0x34, 0x0a, 0x0a, 0x65, 0x78, 0x74, 0x65, 0x6e, 0x73, 0x69,
 	0x6f, 0x6e, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x14, 0x2e, 0x67, 0x6f, 0x6f, 0x67,
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+	0x64, 0x79, 0x3b, 0x68, 0x74, 0x74, 0x70, 0x62, 0x6f, 0x64, 0x79, 0xa2, 0x02, 0x04, 0x47, 0x41,
-	0x04, 0x47, 0x41, 0x50, 0x49, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x50, 0x49, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (

vendor/google.golang.org/genproto/googleapis/rpc/errdetails/error_details.pb.go

@@ -80,11 +80,12 @@ type ErrorInfo struct {
 	Domain string `protobuf:"bytes,2,opt,name=domain,proto3" json:"domain,omitempty"`
 	// Additional structured details about this error.
 	//
-	// Keys should match /[a-zA-Z0-9-_]/ and be limited to 64 characters in
+	// Keys must match a regular expression of `[a-z][a-zA-Z0-9-_]+` but should
+	// ideally be lowerCamelCase. Also, they must be limited to 64 characters in
 	// length. When identifying the current value of an exceeded limit, the units
 	// should be contained in the key, not the value.  For example, rather than
-	// {"instanceLimit": "100/request"}, should be returned as,
+	// `{"instanceLimit": "100/request"}`, should be returned as,
-	// {"instanceLimitPerRequest": "100"}, if the client exceeds the number of
+	// `{"instanceLimitPerRequest": "100"}`, if the client exceeds the number of
 	// instances that can be created in a single (batch) request.
 	Metadata map[string]string `protobuf:"bytes,3,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
@@ -870,6 +871,16 @@ type BadRequest_FieldViolation struct {
 	Field string `protobuf:"bytes,1,opt,name=field,proto3" json:"field,omitempty"`
 	// A description of why the request element is bad.
 	Description string `protobuf:"bytes,2,opt,name=description,proto3" json:"description,omitempty"`
+	// The reason of the field-level error. This is a constant value that
+	// identifies the proximate cause of the field-level error. It should
+	// uniquely identify the type of the FieldViolation within the scope of the
+	// google.rpc.ErrorInfo.domain. This should be at most 63
+	// characters and match a regular expression of `[A-Z][A-Z0-9_]+[A-Z0-9]`,
+	// which represents UPPER_SNAKE_CASE.
+	Reason string `protobuf:"bytes,3,opt,name=reason,proto3" json:"reason,omitempty"`
+	// Provides a localized error message for field-level errors that is safe to
+	// return to the API consumer.
+	LocalizedMessage *LocalizedMessage `protobuf:"bytes,4,opt,name=localized_message,json=localizedMessage,proto3" json:"localized_message,omitempty"`
 }
 
 func (x *BadRequest_FieldViolation) Reset() {
@@ -918,6 +929,20 @@ func (x *BadRequest_FieldViolation) GetDescription() string {
 	return ""
 }
 
+func (x *BadRequest_FieldViolation) GetReason() string {
+	if x != nil {
+		return x.Reason
+	}
+	return ""
+}
+
+func (x *BadRequest_FieldViolation) GetLocalizedMessage() *LocalizedMessage {
+	if x != nil {
+		return x.LocalizedMessage
+	}
+	return nil
+}
+
 // Describes a URL link.
 type Help_Link struct {
 	state         protoimpl.MessageState
@@ -1026,51 +1051,57 @@ var file_google_rpc_error_details_proto_rawDesc = []byte{
 	0x07, 0x73, 0x75, 0x62, 0x6a, 0x65, 0x63, 0x74, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07,
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+	0x48, 0x65, 0x6c, 0x70, 0x12, 0x2b, 0x0a, 0x05, 0x6c, 0x69, 0x6e, 0x6b, 0x73, 0x18, 0x01, 0x20,
-	0x61, 0x6c, 0x69, 0x7a, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x12, 0x16, 0x0a,
+	0x03, 0x28, 0x0b, 0x32, 0x15, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x72, 0x70, 0x63,
-	0x06, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x06, 0x6c,
+	0x2e, 0x48, 0x65, 0x6c, 0x70, 0x2e, 0x4c, 0x69, 0x6e, 0x6b, 0x52, 0x05, 0x6c, 0x69, 0x6e, 0x6b,
-	0x6f, 0x63, 0x61, 0x6c, 0x65, 0x12, 0x18, 0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65,
+	0x73, 0x1a, 0x3a, 0x0a, 0x04, 0x4c, 0x69, 0x6e, 0x6b, 0x12, 0x20, 0x0a, 0x0b, 0x64, 0x65, 0x73,
-	0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x42,
+	0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b,
-	0x6c, 0x0a, 0x0e, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x72, 0x70,
+	0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x10, 0x0a, 0x03, 0x75,
-	0x63, 0x42, 0x11, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x44, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x50,
+	0x72, 0x6c, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x75, 0x72, 0x6c, 0x22, 0x44, 0x0a,
-	0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x3f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x67,
+	0x10, 0x4c, 0x6f, 0x63, 0x61, 0x6c, 0x69, 0x7a, 0x65, 0x64, 0x4d, 0x65, 0x73, 0x73, 0x61, 0x67,
-	0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x67, 0x65, 0x6e, 0x70, 0x72, 0x6f,
+	0x65, 0x12, 0x16, 0x0a, 0x06, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x61, 0x70, 0x69, 0x73, 0x2f, 0x72, 0x70,
+	0x09, 0x52, 0x06, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x65, 0x12, 0x18, 0x0a, 0x07, 0x6d, 0x65, 0x73,
-	0x63, 0x2f, 0x65, 0x72, 0x72, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0x3b, 0x65, 0x72, 0x72,
+	0x73, 0x61, 0x67, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73,
-	0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0xa2, 0x02, 0x03, 0x52, 0x50, 0x43, 0x62, 0x06, 0x70,
+	0x61, 0x67, 0x65, 0x42, 0x6c, 0x0a, 0x0e, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c,
-	0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x65, 0x2e, 0x72, 0x70, 0x63, 0x42, 0x11, 0x45, 0x72, 0x72, 0x6f, 0x72, 0x44, 0x65, 0x74, 0x61,
+	0x69, 0x6c, 0x73, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x3f, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2e, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x67, 0x65,
+	0x6e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x61, 0x70, 0x69,
+	0x73, 0x2f, 0x72, 0x70, 0x63, 0x2f, 0x65, 0x72, 0x72, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73,
+	0x3b, 0x65, 0x72, 0x72, 0x64, 0x65, 0x74, 0x61, 0x69, 0x6c, 0x73, 0xa2, 0x02, 0x03, 0x52, 0x50,
+	0x43, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1111,11 +1142,12 @@ var file_google_rpc_error_details_proto_depIdxs = []int32{
 	12, // 3: google.rpc.PreconditionFailure.violations:type_name -> google.rpc.PreconditionFailure.Violation
 	13, // 4: google.rpc.BadRequest.field_violations:type_name -> google.rpc.BadRequest.FieldViolation
 	14, // 5: google.rpc.Help.links:type_name -> google.rpc.Help.Link
-	6,  // [6:6] is the sub-list for method output_type
+	9,  // 6: google.rpc.BadRequest.FieldViolation.localized_message:type_name -> google.rpc.LocalizedMessage
-	6,  // [6:6] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for method output_type
-	6,  // [6:6] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for method input_type
-	6,  // [6:6] is the sub-list for extension extendee
+	7,  // [7:7] is the sub-list for extension type_name
-	0,  // [0:6] is the sub-list for field type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
 }
 
 func init() { file_google_rpc_error_details_proto_init() }

vendor/google.golang.org/grpc/balancer/balancer.go

@@ -129,6 +129,13 @@ type State struct {
 // brand new implementation of this interface. For the situations like
 // testing, the new implementation should embed this interface. This allows
 // gRPC to add new methods to this interface.
+//
+// NOTICE: This interface is intended to be implemented by gRPC, or intercepted
+// by custom load balancing polices.  Users should not need their own complete
+// implementation of this interface -- they should always delegate to a
+// ClientConn passed to Builder.Build() by embedding it in their
+// implementations. An embedded ClientConn must never be nil, or runtime panics
+// will occur.
 type ClientConn interface {
 	// NewSubConn is called by balancer to create a new SubConn.
 	// It doesn't block and wait for the connections to be established.
@@ -167,6 +174,17 @@ type ClientConn interface {
 	//
 	// Deprecated: Use the Target field in the BuildOptions instead.
 	Target() string
+
+	// MetricsRecorder provides the metrics recorder that balancers can use to
+	// record metrics. Balancer implementations which do not register metrics on
+	// metrics registry and record on them can ignore this method. The returned
+	// MetricsRecorder is guaranteed to never be nil.
+	MetricsRecorder() estats.MetricsRecorder
+
+	// EnforceClientConnEmbedding is included to force implementers to embed
+	// another implementation of this interface, allowing gRPC to add methods
+	// without breaking users.
+	internal.EnforceClientConnEmbedding
 }
 
 // BuildOptions contains additional information for Build.
@@ -198,10 +216,6 @@ type BuildOptions struct {
 	// same resolver.Target as passed to the resolver. See the documentation for
 	// the resolver.Target type for details about what it contains.
 	Target resolver.Target
-	// MetricsRecorder is the metrics recorder that balancers can use to record
-	// metrics. Balancer implementations which do not register metrics on
-	// metrics registry and record on them can ignore this field.
-	MetricsRecorder estats.MetricsRecorder
 }
 
 // Builder creates a balancer.

vendor/google.golang.org/grpc/balancer/endpointsharding/endpointsharding.go

@@ -0,0 +1,358 @@
+/*
+ *
+ * Copyright 2024 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package endpointsharding implements a load balancing policy that manages
+// homogeneous child policies each owning a single endpoint.
+//
+// # Experimental
+//
+// Notice: This package is EXPERIMENTAL and may be changed or removed in a
+// later release.
+package endpointsharding
+
+import (
+	"errors"
+	rand "math/rand/v2"
+	"sync"
+	"sync/atomic"
+
+	"google.golang.org/grpc/balancer"
+	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/resolver"
+)
+
+// ChildState is the balancer state of a child along with the endpoint which
+// identifies the child balancer.
+type ChildState struct {
+	Endpoint resolver.Endpoint
+	State    balancer.State
+
+	// Balancer exposes only the ExitIdler interface of the child LB policy.
+	// Other methods of the child policy are called only by endpointsharding.
+	Balancer balancer.ExitIdler
+}
+
+// Options are the options to configure the behaviour of the
+// endpointsharding balancer.
+type Options struct {
+	// DisableAutoReconnect allows the balancer to keep child balancer in the
+	// IDLE state until they are explicitly triggered to exit using the
+	// ChildState obtained from the endpointsharding picker. When set to false,
+	// the endpointsharding balancer will automatically call ExitIdle on child
+	// connections that report IDLE.
+	DisableAutoReconnect bool
+}
+
+// ChildBuilderFunc creates a new balancer with the ClientConn. It has the same
+// type as the balancer.Builder.Build method.
+type ChildBuilderFunc func(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer
+
+// NewBalancer returns a load balancing policy that manages homogeneous child
+// policies each owning a single endpoint. The endpointsharding balancer
+// forwards the LoadBalancingConfig in ClientConn state updates to its children.
+func NewBalancer(cc balancer.ClientConn, opts balancer.BuildOptions, childBuilder ChildBuilderFunc, esOpts Options) balancer.Balancer {
+	es := &endpointSharding{
+		cc:           cc,
+		bOpts:        opts,
+		esOpts:       esOpts,
+		childBuilder: childBuilder,
+	}
+	es.children.Store(resolver.NewEndpointMap())
+	return es
+}
+
+// endpointSharding is a balancer that wraps child balancers. It creates a child
+// balancer with child config for every unique Endpoint received. It updates the
+// child states on any update from parent or child.
+type endpointSharding struct {
+	cc           balancer.ClientConn
+	bOpts        balancer.BuildOptions
+	esOpts       Options
+	childBuilder ChildBuilderFunc
+
+	// childMu synchronizes calls to any single child. It must be held for all
+	// calls into a child. To avoid deadlocks, do not acquire childMu while
+	// holding mu.
+	childMu  sync.Mutex
+	children atomic.Pointer[resolver.EndpointMap] // endpoint -> *balancerWrapper
+
+	// inhibitChildUpdates is set during UpdateClientConnState/ResolverError
+	// calls (calls to children will each produce an update, only want one
+	// update).
+	inhibitChildUpdates atomic.Bool
+
+	// mu synchronizes access to the state stored in balancerWrappers in the
+	// children field. mu must not be held during calls into a child since
+	// synchronous calls back from the child may require taking mu, causing a
+	// deadlock. To avoid deadlocks, do not acquire childMu while holding mu.
+	mu sync.Mutex
+}
+
+// UpdateClientConnState creates a child for new endpoints and deletes children
+// for endpoints that are no longer present. It also updates all the children,
+// and sends a single synchronous update of the childrens' aggregated state at
+// the end of the UpdateClientConnState operation. If any endpoint has no
+// addresses it will ignore that endpoint. Otherwise, returns first error found
+// from a child, but fully processes the new update.
+func (es *endpointSharding) UpdateClientConnState(state balancer.ClientConnState) error {
+	es.childMu.Lock()
+	defer es.childMu.Unlock()
+
+	es.inhibitChildUpdates.Store(true)
+	defer func() {
+		es.inhibitChildUpdates.Store(false)
+		es.updateState()
+	}()
+	var ret error
+
+	children := es.children.Load()
+	newChildren := resolver.NewEndpointMap()
+
+	// Update/Create new children.
+	for _, endpoint := range state.ResolverState.Endpoints {
+		if _, ok := newChildren.Get(endpoint); ok {
+			// Endpoint child was already created, continue to avoid duplicate
+			// update.
+			continue
+		}
+		var childBalancer *balancerWrapper
+		if val, ok := children.Get(endpoint); ok {
+			childBalancer = val.(*balancerWrapper)
+			// Endpoint attributes may have changed, update the stored endpoint.
+			es.mu.Lock()
+			childBalancer.childState.Endpoint = endpoint
+			es.mu.Unlock()
+		} else {
+			childBalancer = &balancerWrapper{
+				childState: ChildState{Endpoint: endpoint},
+				ClientConn: es.cc,
+				es:         es,
+			}
+			childBalancer.childState.Balancer = childBalancer
+			childBalancer.child = es.childBuilder(childBalancer, es.bOpts)
+		}
+		newChildren.Set(endpoint, childBalancer)
+		if err := childBalancer.updateClientConnStateLocked(balancer.ClientConnState{
+			BalancerConfig: state.BalancerConfig,
+			ResolverState: resolver.State{
+				Endpoints:  []resolver.Endpoint{endpoint},
+				Attributes: state.ResolverState.Attributes,
+			},
+		}); err != nil && ret == nil {
+			// Return first error found, and always commit full processing of
+			// updating children. If desired to process more specific errors
+			// across all endpoints, caller should make these specific
+			// validations, this is a current limitation for simplicity sake.
+			ret = err
+		}
+	}
+	// Delete old children that are no longer present.
+	for _, e := range children.Keys() {
+		child, _ := children.Get(e)
+		if _, ok := newChildren.Get(e); !ok {
+			child.(*balancerWrapper).closeLocked()
+		}
+	}
+	es.children.Store(newChildren)
+	if newChildren.Len() == 0 {
+		return balancer.ErrBadResolverState
+	}
+	return ret
+}
+
+// ResolverError forwards the resolver error to all of the endpointSharding's
+// children and sends a single synchronous update of the childStates at the end
+// of the ResolverError operation.
+func (es *endpointSharding) ResolverError(err error) {
+	es.childMu.Lock()
+	defer es.childMu.Unlock()
+	es.inhibitChildUpdates.Store(true)
+	defer func() {
+		es.inhibitChildUpdates.Store(false)
+		es.updateState()
+	}()
+	children := es.children.Load()
+	for _, child := range children.Values() {
+		child.(*balancerWrapper).resolverErrorLocked(err)
+	}
+}
+
+func (es *endpointSharding) UpdateSubConnState(balancer.SubConn, balancer.SubConnState) {
+	// UpdateSubConnState is deprecated.
+}
+
+func (es *endpointSharding) Close() {
+	es.childMu.Lock()
+	defer es.childMu.Unlock()
+	children := es.children.Load()
+	for _, child := range children.Values() {
+		child.(*balancerWrapper).closeLocked()
+	}
+}
+
+// updateState updates this component's state. It sends the aggregated state,
+// and a picker with round robin behavior with all the child states present if
+// needed.
+func (es *endpointSharding) updateState() {
+	if es.inhibitChildUpdates.Load() {
+		return
+	}
+	var readyPickers, connectingPickers, idlePickers, transientFailurePickers []balancer.Picker
+
+	es.mu.Lock()
+	defer es.mu.Unlock()
+
+	children := es.children.Load()
+	childStates := make([]ChildState, 0, children.Len())
+
+	for _, child := range children.Values() {
+		bw := child.(*balancerWrapper)
+		childState := bw.childState
+		childStates = append(childStates, childState)
+		childPicker := childState.State.Picker
+		switch childState.State.ConnectivityState {
+		case connectivity.Ready:
+			readyPickers = append(readyPickers, childPicker)
+		case connectivity.Connecting:
+			connectingPickers = append(connectingPickers, childPicker)
+		case connectivity.Idle:
+			idlePickers = append(idlePickers, childPicker)
+		case connectivity.TransientFailure:
+			transientFailurePickers = append(transientFailurePickers, childPicker)
+			// connectivity.Shutdown shouldn't appear.
+		}
+	}
+
+	// Construct the round robin picker based off the aggregated state. Whatever
+	// the aggregated state, use the pickers present that are currently in that
+	// state only.
+	var aggState connectivity.State
+	var pickers []balancer.Picker
+	if len(readyPickers) >= 1 {
+		aggState = connectivity.Ready
+		pickers = readyPickers
+	} else if len(connectingPickers) >= 1 {
+		aggState = connectivity.Connecting
+		pickers = connectingPickers
+	} else if len(idlePickers) >= 1 {
+		aggState = connectivity.Idle
+		pickers = idlePickers
+	} else if len(transientFailurePickers) >= 1 {
+		aggState = connectivity.TransientFailure
+		pickers = transientFailurePickers
+	} else {
+		aggState = connectivity.TransientFailure
+		pickers = []balancer.Picker{base.NewErrPicker(errors.New("no children to pick from"))}
+	} // No children (resolver error before valid update).
+	p := &pickerWithChildStates{
+		pickers:     pickers,
+		childStates: childStates,
+		next:        uint32(rand.IntN(len(pickers))),
+	}
+	es.cc.UpdateState(balancer.State{
+		ConnectivityState: aggState,
+		Picker:            p,
+	})
+}
+
+// pickerWithChildStates delegates to the pickers it holds in a round robin
+// fashion. It also contains the childStates of all the endpointSharding's
+// children.
+type pickerWithChildStates struct {
+	pickers     []balancer.Picker
+	childStates []ChildState
+	next        uint32
+}
+
+func (p *pickerWithChildStates) Pick(info balancer.PickInfo) (balancer.PickResult, error) {
+	nextIndex := atomic.AddUint32(&p.next, 1)
+	picker := p.pickers[nextIndex%uint32(len(p.pickers))]
+	return picker.Pick(info)
+}
+
+// ChildStatesFromPicker returns the state of all the children managed by the
+// endpoint sharding balancer that created this picker.
+func ChildStatesFromPicker(picker balancer.Picker) []ChildState {
+	p, ok := picker.(*pickerWithChildStates)
+	if !ok {
+		return nil
+	}
+	return p.childStates
+}
+
+// balancerWrapper is a wrapper of a balancer. It ID's a child balancer by
+// endpoint, and persists recent child balancer state.
+type balancerWrapper struct {
+	// The following fields are initialized at build time and read-only after
+	// that and therefore do not need to be guarded by a mutex.
+
+	// child contains the wrapped balancer. Access its methods only through
+	// methods on balancerWrapper to ensure proper synchronization
+	child               balancer.Balancer
+	balancer.ClientConn // embed to intercept UpdateState, doesn't deal with SubConns
+
+	es *endpointSharding
+
+	// Access to the following fields is guarded by es.mu.
+
+	childState ChildState
+	isClosed   bool
+}
+
+func (bw *balancerWrapper) UpdateState(state balancer.State) {
+	bw.es.mu.Lock()
+	bw.childState.State = state
+	bw.es.mu.Unlock()
+	if state.ConnectivityState == connectivity.Idle && !bw.es.esOpts.DisableAutoReconnect {
+		bw.ExitIdle()
+	}
+	bw.es.updateState()
+}
+
+// ExitIdle pings an IDLE child balancer to exit idle in a new goroutine to
+// avoid deadlocks due to synchronous balancer state updates.
+func (bw *balancerWrapper) ExitIdle() {
+	if ei, ok := bw.child.(balancer.ExitIdler); ok {
+		go func() {
+			bw.es.childMu.Lock()
+			if !bw.isClosed {
+				ei.ExitIdle()
+			}
+			bw.es.childMu.Unlock()
+		}()
+	}
+}
+
+// updateClientConnStateLocked delivers the ClientConnState to the child
+// balancer. Callers must hold the child mutex of the parent endpointsharding
+// balancer.
+func (bw *balancerWrapper) updateClientConnStateLocked(ccs balancer.ClientConnState) error {
+	return bw.child.UpdateClientConnState(ccs)
+}
+
+// closeLocked closes the child balancer. Callers must hold the child mutext of
+// the parent endpointsharding balancer.
+func (bw *balancerWrapper) closeLocked() {
+	bw.child.Close()
+	bw.isClosed = true
+}
+
+func (bw *balancerWrapper) resolverErrorLocked(err error) {
+	bw.child.ResolverError(err)
+}

vendor/google.golang.org/grpc/balancer/pickfirst/pickfirstleaf/pickfirstleaf.go

@@ -120,7 +120,7 @@ func (pickfirstBuilder) Build(cc balancer.ClientConn, bo balancer.BuildOptions)
 	b := &pickfirstBalancer{
 		cc:              cc,
 		target:          bo.Target.String(),
-		metricsRecorder: bo.MetricsRecorder, // ClientConn will always create a Metrics Recorder.
+		metricsRecorder: cc.MetricsRecorder(),
 
 		subConns:              resolver.NewAddressMap(),
 		state:                 connectivity.Connecting,

vendor/google.golang.org/grpc/balancer/roundrobin/roundrobin.go

@@ -22,12 +22,13 @@
 package roundrobin
 
 import (
-	rand "math/rand/v2"
+	"fmt"
-	"sync/atomic"
 
 	"google.golang.org/grpc/balancer"
-	"google.golang.org/grpc/balancer/base"
+	"google.golang.org/grpc/balancer/endpointsharding"
+	"google.golang.org/grpc/balancer/pickfirst/pickfirstleaf"
 	"google.golang.org/grpc/grpclog"
+	internalgrpclog "google.golang.org/grpc/internal/grpclog"
 )
 
 // Name is the name of round_robin balancer.
@@ -35,47 +36,44 @@ const Name = "round_robin"
 
 var logger = grpclog.Component("roundrobin")
 
-// newBuilder creates a new roundrobin balancer builder.
-func newBuilder() balancer.Builder {
-	return base.NewBalancerBuilder(Name, &rrPickerBuilder{}, base.Config{HealthCheck: true})
-}
-
 func init() {
-	balancer.Register(newBuilder())
+	balancer.Register(builder{})
 }
 
-type rrPickerBuilder struct{}
+type builder struct{}
 
-func (*rrPickerBuilder) Build(info base.PickerBuildInfo) balancer.Picker {
+func (bb builder) Name() string {
-	logger.Infof("roundrobinPicker: Build called with info: %v", info)
+	return Name
-	if len(info.ReadySCs) == 0 {
+}
-		return base.NewErrPicker(balancer.ErrNoSubConnAvailable)
+
+func (bb builder) Build(cc balancer.ClientConn, opts balancer.BuildOptions) balancer.Balancer {
+	childBuilder := balancer.Get(pickfirstleaf.Name).Build
+	bal := &rrBalancer{
+		cc:       cc,
+		Balancer: endpointsharding.NewBalancer(cc, opts, childBuilder, endpointsharding.Options{}),
 	}
-	scs := make([]balancer.SubConn, 0, len(info.ReadySCs))
+	bal.logger = internalgrpclog.NewPrefixLogger(logger, fmt.Sprintf("[%p] ", bal))
-	for sc := range info.ReadySCs {
+	bal.logger.Infof("Created")
-		scs = append(scs, sc)
+	return bal
-	}
+}
-	return &rrPicker{
+
-		subConns: scs,
+type rrBalancer struct {
-		// Start at a random index, as the same RR balancer rebuilds a new
+	balancer.Balancer
-		// picker when SubConn states change, and we don't want to apply excess
+	cc     balancer.ClientConn
-		// load to the first server in the list.
+	logger *internalgrpclog.PrefixLogger
-		next: uint32(rand.IntN(len(scs))),
+}
+
+func (b *rrBalancer) UpdateClientConnState(ccs balancer.ClientConnState) error {
+	return b.Balancer.UpdateClientConnState(balancer.ClientConnState{
+		// Enable the health listener in pickfirst children for client side health
+		// checks and outlier detection, if configured.
+		ResolverState: pickfirstleaf.EnableHealthListener(ccs.ResolverState),
+	})
+}
+
+func (b *rrBalancer) ExitIdle() {
+	// Should always be ok, as child is endpoint sharding.
+	if ei, ok := b.Balancer.(balancer.ExitIdler); ok {
+		ei.ExitIdle()
 	}
 }
-
-type rrPicker struct {
-	// subConns is the snapshot of the roundrobin balancer when this picker was
-	// created. The slice is immutable. Each Get() will do a round robin
-	// selection from it and return the selected SubConn.
-	subConns []balancer.SubConn
-	next     uint32
-}
-
-func (p *rrPicker) Pick(balancer.PickInfo) (balancer.PickResult, error) {
-	subConnsLen := uint32(len(p.subConns))
-	nextIndex := atomic.AddUint32(&p.next, 1)
-
-	sc := p.subConns[nextIndex%subConnsLen]
-	return balancer.PickResult{SubConn: sc}, nil
-}

vendor/google.golang.org/grpc/balancer/subconn.go

@@ -44,7 +44,7 @@ import (
 // should only use a single address.
 //
 // NOTICE: This interface is intended to be implemented by gRPC, or intercepted
-// by custom load balancing poilices.  Users should not need their own complete
+// by custom load balancing polices.  Users should not need their own complete
 // implementation of this interface -- they should always delegate to a SubConn
 // returned by ClientConn.NewSubConn() by embedding it in their implementations.
 // An embedded SubConn must never be nil, or runtime panics will occur.

vendor/google.golang.org/grpc/balancer_wrapper.go

@@ -26,6 +26,7 @@ import (
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/connectivity"
+	"google.golang.org/grpc/experimental/stats"
 	"google.golang.org/grpc/internal"
 	"google.golang.org/grpc/internal/balancer/gracefulswitch"
 	"google.golang.org/grpc/internal/channelz"
@@ -59,6 +60,7 @@ var (
 // It uses the gracefulswitch.Balancer internally to ensure that balancer
 // switches happen in a graceful manner.
 type ccBalancerWrapper struct {
+	internal.EnforceClientConnEmbedding
 	// The following fields are initialized when the wrapper is created and are
 	// read-only afterwards, and therefore can be accessed without a mutex.
 	cc               *ClientConn
@@ -92,7 +94,6 @@ func newCCBalancerWrapper(cc *ClientConn) *ccBalancerWrapper {
 			CustomUserAgent: cc.dopts.copts.UserAgent,
 			ChannelzParent:  cc.channelz,
 			Target:          cc.parsedTarget,
-			MetricsRecorder: cc.metricsRecorderList,
 		},
 		serializer:       grpcsync.NewCallbackSerializer(ctx),
 		serializerCancel: cancel,
@@ -101,6 +102,10 @@ func newCCBalancerWrapper(cc *ClientConn) *ccBalancerWrapper {
 	return ccb
 }
 
+func (ccb *ccBalancerWrapper) MetricsRecorder() stats.MetricsRecorder {
+	return ccb.cc.metricsRecorderList
+}
+
 // updateClientConnState is invoked by grpc to push a ClientConnState update to
 // the underlying balancer.  This is always executed from the serializer, so
 // it is safe to call into the balancer here.
@@ -415,7 +420,7 @@ func (acbw *acBalancerWrapper) GetOrBuildProducer(pb balancer.ProducerBuilder) (
 		}
 		acbw.producersMu.Unlock()
 	}
-	return pData.producer, grpcsync.OnceFunc(unref)
+	return pData.producer, sync.OnceFunc(unref)
 }
 
 func (acbw *acBalancerWrapper) closeProducers() {

vendor/google.golang.org/grpc/binarylog/grpc_binarylog_v1/binarylog.pb.go

@@ -18,7 +18,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.35.2
+// 	protoc-gen-go v1.36.4
 // 	protoc        v5.27.1
 // source: grpc/binlog/v1/binarylog.proto
 
@@ -31,6 +31,7 @@ import (
 	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -233,10 +234,7 @@ func (Address_Type) EnumDescriptor() ([]byte, []int) {
 
 // Log entry we store in binary logs
 type GrpcLogEntry struct {
-	state         protoimpl.MessageState
+	state protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
 	// The timestamp of the binary log message
 	Timestamp *timestamppb.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
 	// Uniquely identifies a call. The value must not be 0 in order to disambiguate
@@ -255,7 +253,7 @@ type GrpcLogEntry struct {
 	// The logger uses one of the following fields to record the payload,
 	// according to the type of the log entry.
 	//
-	// Types that are assignable to Payload:
+	// Types that are valid to be assigned to Payload:
 	//
 	//	*GrpcLogEntry_ClientHeader
 	//	*GrpcLogEntry_ServerHeader
@@ -269,7 +267,9 @@ type GrpcLogEntry struct {
 	// EVENT_TYPE_SERVER_HEADER normally or EVENT_TYPE_SERVER_TRAILER in
 	// the case of trailers-only. On server side, peer is always
 	// logged on EVENT_TYPE_CLIENT_HEADER.
-	Peer *Address `protobuf:"bytes,11,opt,name=peer,proto3" json:"peer,omitempty"`
+	Peer          *Address `protobuf:"bytes,11,opt,name=peer,proto3" json:"peer,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *GrpcLogEntry) Reset() {
@@ -337,37 +337,45 @@ func (x *GrpcLogEntry) GetLogger() GrpcLogEntry_Logger {
 	return GrpcLogEntry_LOGGER_UNKNOWN
 }
 
-func (m *GrpcLogEntry) GetPayload() isGrpcLogEntry_Payload {
+func (x *GrpcLogEntry) GetPayload() isGrpcLogEntry_Payload {
-	if m != nil {
+	if x != nil {
-		return m.Payload
+		return x.Payload
 	}
 	return nil
 }
 
 func (x *GrpcLogEntry) GetClientHeader() *ClientHeader {
-	if x, ok := x.GetPayload().(*GrpcLogEntry_ClientHeader); ok {
+	if x != nil {
-		return x.ClientHeader
+		if x, ok := x.Payload.(*GrpcLogEntry_ClientHeader); ok {
+			return x.ClientHeader
+		}
 	}
 	return nil
 }
 
 func (x *GrpcLogEntry) GetServerHeader() *ServerHeader {
-	if x, ok := x.GetPayload().(*GrpcLogEntry_ServerHeader); ok {
+	if x != nil {
-		return x.ServerHeader
+		if x, ok := x.Payload.(*GrpcLogEntry_ServerHeader); ok {
+			return x.ServerHeader
+		}
 	}
 	return nil
 }
 
 func (x *GrpcLogEntry) GetMessage() *Message {
-	if x, ok := x.GetPayload().(*GrpcLogEntry_Message); ok {
+	if x != nil {
-		return x.Message
+		if x, ok := x.Payload.(*GrpcLogEntry_Message); ok {
+			return x.Message
+		}
 	}
 	return nil
 }
 
 func (x *GrpcLogEntry) GetTrailer() *Trailer {
-	if x, ok := x.GetPayload().(*GrpcLogEntry_Trailer); ok {
+	if x != nil {
-		return x.Trailer
+		if x, ok := x.Payload.(*GrpcLogEntry_Trailer); ok {
+			return x.Trailer
+		}
 	}
 	return nil
 }
@@ -416,10 +424,7 @@ func (*GrpcLogEntry_Message) isGrpcLogEntry_Payload() {}
 func (*GrpcLogEntry_Trailer) isGrpcLogEntry_Payload() {}
 
 type ClientHeader struct {
-	state         protoimpl.MessageState
+	state protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
 	// This contains only the metadata from the application.
 	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
 	// The name of the RPC method, which looks something like:
@@ -433,7 +438,9 @@ type ClientHeader struct {
 	// <host> or <host>:<port> .
 	Authority string `protobuf:"bytes,3,opt,name=authority,proto3" json:"authority,omitempty"`
 	// the RPC timeout
-	Timeout *durationpb.Duration `protobuf:"bytes,4,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	Timeout       *durationpb.Duration `protobuf:"bytes,4,opt,name=timeout,proto3" json:"timeout,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ClientHeader) Reset() {
@@ -495,12 +502,11 @@ func (x *ClientHeader) GetTimeout() *durationpb.Duration {
 }
 
 type ServerHeader struct {
-	state         protoimpl.MessageState
+	state protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
 	// This contains only the metadata from the application.
-	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	Metadata      *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *ServerHeader) Reset() {
@@ -541,10 +547,7 @@ func (x *ServerHeader) GetMetadata() *Metadata {
 }
 
 type Trailer struct {
-	state         protoimpl.MessageState
+	state protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
 	// This contains only the metadata from the application.
 	Metadata *Metadata `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
 	// The gRPC status code.
@@ -555,6 +558,8 @@ type Trailer struct {
 	// The value of the 'grpc-status-details-bin' metadata key. If
 	// present, this is always an encoded 'google.rpc.Status' message.
 	StatusDetails []byte `protobuf:"bytes,4,opt,name=status_details,json=statusDetails,proto3" json:"status_details,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Trailer) Reset() {
@@ -617,15 +622,14 @@ func (x *Trailer) GetStatusDetails() []byte {
 
 // Message payload, used by CLIENT_MESSAGE and SERVER_MESSAGE
 type Message struct {
-	state         protoimpl.MessageState
+	state protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
 	// Length of the message. It may not be the same as the length of the
 	// data field, as the logging payload can be truncated or omitted.
 	Length uint32 `protobuf:"varint,1,opt,name=length,proto3" json:"length,omitempty"`
 	// May be truncated or omitted.
-	Data []byte `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+	Data          []byte `protobuf:"bytes,2,opt,name=data,proto3" json:"data,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Message) Reset() {
@@ -694,11 +698,10 @@ func (x *Message) GetData() []byte {
 // header is just a normal metadata key.
 // The pair will not count towards the size limit.
 type Metadata struct {
-	state         protoimpl.MessageState
+	state         protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
+	Entry         []*MetadataEntry       `protobuf:"bytes,1,rep,name=entry,proto3" json:"entry,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
+	sizeCache     protoimpl.SizeCache
-	Entry []*MetadataEntry `protobuf:"bytes,1,rep,name=entry,proto3" json:"entry,omitempty"`
 }
 
 func (x *Metadata) Reset() {
@@ -740,12 +743,11 @@ func (x *Metadata) GetEntry() []*MetadataEntry {
 
 // A metadata key value pair
 type MetadataEntry struct {
-	state         protoimpl.MessageState
+	state         protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
+	Key           string                 `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	Value         []byte                 `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
+	sizeCache     protoimpl.SizeCache
-	Key   string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
-	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
 }
 
 func (x *MetadataEntry) Reset() {
@@ -794,14 +796,13 @@ func (x *MetadataEntry) GetValue() []byte {
 
 // Address information
 type Address struct {
-	state         protoimpl.MessageState
+	state   protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
+	Type    Address_Type           `protobuf:"varint,1,opt,name=type,proto3,enum=grpc.binarylog.v1.Address_Type" json:"type,omitempty"`
-	unknownFields protoimpl.UnknownFields
+	Address string                 `protobuf:"bytes,2,opt,name=address,proto3" json:"address,omitempty"`
-
-	Type    Address_Type `protobuf:"varint,1,opt,name=type,proto3,enum=grpc.binarylog.v1.Address_Type" json:"type,omitempty"`
-	Address string       `protobuf:"bytes,2,opt,name=address,proto3" json:"address,omitempty"`
 	// only for TYPE_IPV4 and TYPE_IPV6
-	IpPort uint32 `protobuf:"varint,3,opt,name=ip_port,json=ipPort,proto3" json:"ip_port,omitempty"`
+	IpPort        uint32 `protobuf:"varint,3,opt,name=ip_port,json=ipPort,proto3" json:"ip_port,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
 }
 
 func (x *Address) Reset() {
@@ -857,7 +858,7 @@ func (x *Address) GetIpPort() uint32 {
 
 var File_grpc_binlog_v1_binarylog_proto protoreflect.FileDescriptor
 
-var file_grpc_binlog_v1_binarylog_proto_rawDesc = []byte{
+var file_grpc_binlog_v1_binarylog_proto_rawDesc = string([]byte{
 	0x0a, 0x1e, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x62, 0x69, 0x6e, 0x6c, 0x6f, 0x67, 0x2f, 0x76, 0x31,
 	0x2f, 0x62, 0x69, 0x6e, 0x61, 0x72, 0x79, 0x6c, 0x6f, 0x67, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
 	0x12, 0x11, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x62, 0x69, 0x6e, 0x61, 0x72, 0x79, 0x6c, 0x6f, 0x67,
@@ -983,16 +984,16 @@ var file_grpc_binlog_v1_binarylog_proto_rawDesc = []byte{
 	0x69, 0x6e, 0x61, 0x72, 0x79, 0x6c, 0x6f, 0x67, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x5f, 0x62, 0x69,
 	0x6e, 0x61, 0x72, 0x79, 0x6c, 0x6f, 0x67, 0x5f, 0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
 	0x6f, 0x33,
-}
+})
 
 var (
 	file_grpc_binlog_v1_binarylog_proto_rawDescOnce sync.Once
-	file_grpc_binlog_v1_binarylog_proto_rawDescData = file_grpc_binlog_v1_binarylog_proto_rawDesc
+	file_grpc_binlog_v1_binarylog_proto_rawDescData []byte
 )
 
 func file_grpc_binlog_v1_binarylog_proto_rawDescGZIP() []byte {
 	file_grpc_binlog_v1_binarylog_proto_rawDescOnce.Do(func() {
-		file_grpc_binlog_v1_binarylog_proto_rawDescData = protoimpl.X.CompressGZIP(file_grpc_binlog_v1_binarylog_proto_rawDescData)
+		file_grpc_binlog_v1_binarylog_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_grpc_binlog_v1_binarylog_proto_rawDesc), len(file_grpc_binlog_v1_binarylog_proto_rawDesc)))
 	})
 	return file_grpc_binlog_v1_binarylog_proto_rawDescData
 }
@@ -1051,7 +1052,7 @@ func file_grpc_binlog_v1_binarylog_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_grpc_binlog_v1_binarylog_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_grpc_binlog_v1_binarylog_proto_rawDesc), len(file_grpc_binlog_v1_binarylog_proto_rawDesc)),
 			NumEnums:      3,
 			NumMessages:   8,
 			NumExtensions: 0,
@@ -1063,7 +1064,6 @@ func file_grpc_binlog_v1_binarylog_proto_init() {
 		MessageInfos:      file_grpc_binlog_v1_binarylog_proto_msgTypes,
 	}.Build()
 	File_grpc_binlog_v1_binarylog_proto = out.File
-	file_grpc_binlog_v1_binarylog_proto_rawDesc = nil
 	file_grpc_binlog_v1_binarylog_proto_goTypes = nil
 	file_grpc_binlog_v1_binarylog_proto_depIdxs = nil
 }

vendor/google.golang.org/grpc/clientconn.go

@@ -118,12 +118,26 @@ func (dcs *defaultConfigSelector) SelectConfig(rpcInfo iresolver.RPCInfo) (*ires
 
 // NewClient creates a new gRPC "channel" for the target URI provided.  No I/O
 // is performed.  Use of the ClientConn for RPCs will automatically cause it to
-// connect.  Connect may be used to manually create a connection, but for most
+// connect.  The Connect method may be called to manually create a connection,
-// users this is unnecessary.
+// but for most users this should be unnecessary.
 //
 // The target name syntax is defined in
-// https://github.com/grpc/grpc/blob/master/doc/naming.md.  e.g. to use dns
+// https://github.com/grpc/grpc/blob/master/doc/naming.md.  E.g. to use the dns
-// resolver, a "dns:///" prefix should be applied to the target.
+// name resolver, a "dns:///" prefix may be applied to the target.  The default
+// name resolver will be used if no scheme is detected, or if the parsed scheme
+// is not a registered name resolver.  The default resolver is "dns" but can be
+// overridden using the resolver package's SetDefaultScheme.
+//
+// Examples:
+//
+//   - "foo.googleapis.com:8080"
+//   - "dns:///foo.googleapis.com:8080"
+//   - "dns:///foo.googleapis.com"
+//   - "dns:///10.0.0.213:8080"
+//   - "dns:///%5B2001:db8:85a3:8d3:1319:8a2e:370:7348%5D:443"
+//   - "dns://8.8.8.8/foo.googleapis.com:8080"
+//   - "dns://8.8.8.8/foo.googleapis.com"
+//   - "zookeeper://zk.example.com:9900/example_service"
 //
 // The DialOptions returned by WithBlock, WithTimeout,
 // WithReturnConnectionError, and FailOnNonTempDialError are ignored by this
@@ -181,7 +195,7 @@ func NewClient(target string, opts ...DialOption) (conn *ClientConn, err error)
 		}
 		cc.dopts.defaultServiceConfig, _ = scpr.Config.(*ServiceConfig)
 	}
-	cc.mkp = cc.dopts.copts.KeepaliveParams
+	cc.keepaliveParams = cc.dopts.copts.KeepaliveParams
 
 	if err = cc.initAuthority(); err != nil {
 		return nil, err
@@ -225,7 +239,12 @@ func Dial(target string, opts ...DialOption) (*ClientConn, error) {
 func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *ClientConn, err error) {
 	// At the end of this method, we kick the channel out of idle, rather than
 	// waiting for the first rpc.
-	opts = append([]DialOption{withDefaultScheme("passthrough")}, opts...)
+	//
+	// WithLocalDNSResolution dial option in `grpc.Dial` ensures that it
+	// preserves behavior: when default scheme passthrough is used, skip
+	// hostname resolution, when "dns" is used for resolution, perform
+	// resolution on the client.
+	opts = append([]DialOption{withDefaultScheme("passthrough"), WithLocalDNSResolution()}, opts...)
 	cc, err := NewClient(target, opts...)
 	if err != nil {
 		return nil, err
@@ -618,7 +637,7 @@ type ClientConn struct {
 	balancerWrapper *ccBalancerWrapper         // Always recreated whenever entering idle to simplify Close.
 	sc              *ServiceConfig             // Latest service config received from the resolver.
 	conns           map[*addrConn]struct{}     // Set to nil on close.
-	mkp             keepalive.ClientParameters // May be updated upon receipt of a GoAway.
+	keepaliveParams keepalive.ClientParameters // May be updated upon receipt of a GoAway.
 	// firstResolveEvent is used to track whether the name resolver sent us at
 	// least one update. RPCs block on this event.  May be accessed without mu
 	// if we know we cannot be asked to enter idle mode while accessing it (e.g.
@@ -867,7 +886,13 @@ func (cc *ClientConn) Target() string {
 	return cc.target
 }
 
-// CanonicalTarget returns the canonical target string of the ClientConn.
+// CanonicalTarget returns the canonical target string used when creating cc.
+//
+// This always has the form "<scheme>://[authority]/<endpoint>".  For example:
+//
+//   - "dns:///example.com:42"
+//   - "dns://8.8.8.8/example.com:42"
+//   - "unix:///path/to/socket"
 func (cc *ClientConn) CanonicalTarget() string {
 	return cc.parsedTarget.String()
 }
@@ -1210,8 +1235,8 @@ func (ac *addrConn) adjustParams(r transport.GoAwayReason) {
 	case transport.GoAwayTooManyPings:
 		v := 2 * ac.dopts.copts.KeepaliveParams.Time
 		ac.cc.mu.Lock()
-		if v > ac.cc.mkp.Time {
+		if v > ac.cc.keepaliveParams.Time {
-			ac.cc.mkp.Time = v
+			ac.cc.keepaliveParams.Time = v
 		}
 		ac.cc.mu.Unlock()
 	}
@@ -1307,7 +1332,7 @@ func (ac *addrConn) tryAllAddrs(ctx context.Context, addrs []resolver.Address, c
 		ac.mu.Lock()
 
 		ac.cc.mu.RLock()
-		ac.dopts.copts.KeepaliveParams = ac.cc.mkp
+		ac.dopts.copts.KeepaliveParams = ac.cc.keepaliveParams
 		ac.cc.mu.RUnlock()
 
 		copts := ac.dopts.copts

vendor/google.golang.org/grpc/dialoptions.go

@@ -73,7 +73,7 @@ type dialOptions struct {
 	chainUnaryInts  []UnaryClientInterceptor
 	chainStreamInts []StreamClientInterceptor
 
-	cp                          Compressor
+	compressorV0                Compressor
 	dc                          Decompressor
 	bs                          internalbackoff.Strategy
 	block                       bool
@@ -94,6 +94,8 @@ type dialOptions struct {
 	idleTimeout                 time.Duration
 	defaultScheme               string
 	maxCallAttempts             int
+	enableLocalDNSResolution    bool // Specifies if target hostnames should be resolved when proxying is enabled.
+	useProxy                    bool // Specifies if a server should be connected via proxy.
 }
 
 // DialOption configures how we set up the connection.
@@ -256,7 +258,7 @@ func WithCodec(c Codec) DialOption {
 // Deprecated: use UseCompressor instead.  Will be supported throughout 1.x.
 func WithCompressor(cp Compressor) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
-		o.cp = cp
+		o.compressorV0 = cp
 	})
 }
 
@@ -377,7 +379,22 @@ func WithInsecure() DialOption {
 // later release.
 func WithNoProxy() DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
-		o.copts.UseProxy = false
+		o.useProxy = false
+	})
+}
+
+// WithLocalDNSResolution forces local DNS name resolution even when a proxy is
+// specified in the environment.  By default, the server name is provided
+// directly to the proxy as part of the CONNECT handshake. This is ignored if
+// WithNoProxy is used.
+//
+// # Experimental
+//
+// Notice: This API is EXPERIMENTAL and may be changed or removed in a
+// later release.
+func WithLocalDNSResolution() DialOption {
+	return newFuncDialOption(func(o *dialOptions) {
+		o.enableLocalDNSResolution = true
 	})
 }
 
@@ -667,14 +684,15 @@ func defaultDialOptions() dialOptions {
 		copts: transport.ConnectOptions{
 			ReadBufferSize:  defaultReadBufSize,
 			WriteBufferSize: defaultWriteBufSize,
-			UseProxy:        true,
 			UserAgent:       grpcUA,
 			BufferPool:      mem.DefaultBufferPool(),
 		},
-		bs:              internalbackoff.DefaultExponential,
+		bs:                       internalbackoff.DefaultExponential,
-		idleTimeout:     30 * time.Minute,
+		idleTimeout:              30 * time.Minute,
-		defaultScheme:   "dns",
+		defaultScheme:            "dns",
-		maxCallAttempts: defaultMaxCallAttempts,
+		maxCallAttempts:          defaultMaxCallAttempts,
+		useProxy:                 true,
+		enableLocalDNSResolution: false,
 	}
 }
 

vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go

@@ -17,7 +17,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.35.2
+// 	protoc-gen-go v1.36.4
 // 	protoc        v5.27.1
 // source: grpc/health/v1/health.proto
 
@@ -28,6 +28,7 @@ import (
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
 	sync "sync"
+	unsafe "unsafe"
 )
 
 const (
@@ -90,11 +91,10 @@ func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) {
 }
 
 type HealthCheckRequest struct {
-	state         protoimpl.MessageState
+	state         protoimpl.MessageState `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
+	Service       string                 `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
+	sizeCache     protoimpl.SizeCache
-	Service string `protobuf:"bytes,1,opt,name=service,proto3" json:"service,omitempty"`
 }
 
 func (x *HealthCheckRequest) Reset() {
@@ -135,11 +135,10 @@ func (x *HealthCheckRequest) GetService() string {
 }
 
 type HealthCheckResponse struct {
-	state         protoimpl.MessageState
+	state         protoimpl.MessageState            `protogen:"open.v1"`
-	sizeCache     protoimpl.SizeCache
+	Status        HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,proto3,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
 	unknownFields protoimpl.UnknownFields
-
+	sizeCache     protoimpl.SizeCache
-	Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,proto3,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"`
 }
 
 func (x *HealthCheckResponse) Reset() {
@@ -181,7 +180,7 @@ func (x *HealthCheckResponse) GetStatus() HealthCheckResponse_ServingStatus {
 
 var File_grpc_health_v1_health_proto protoreflect.FileDescriptor
 
-var file_grpc_health_v1_health_proto_rawDesc = []byte{
+var file_grpc_health_v1_health_proto_rawDesc = string([]byte{
 	0x0a, 0x1b, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x68, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x2f, 0x76, 0x31,
 	0x2f, 0x68, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0e, 0x67,
 	0x72, 0x70, 0x63, 0x2e, 0x68, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x2e, 0x76, 0x31, 0x22, 0x2e, 0x0a,
@@ -210,23 +209,24 @@ var file_grpc_health_v1_health_proto_rawDesc = []byte{
 	0x68, 0x65, 0x63, 0x6b, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x23, 0x2e, 0x67, 0x72,
 	0x70, 0x63, 0x2e, 0x68, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x2e, 0x76, 0x31, 0x2e, 0x48, 0x65, 0x61,
 	0x6c, 0x74, 0x68, 0x43, 0x68, 0x65, 0x63, 0x6b, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65,
-	0x30, 0x01, 0x42, 0x61, 0x0a, 0x11, 0x69, 0x6f, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x68, 0x65,
+	0x30, 0x01, 0x42, 0x70, 0x0a, 0x11, 0x69, 0x6f, 0x2e, 0x67, 0x72, 0x70, 0x63, 0x2e, 0x68, 0x65,
 	0x61, 0x6c, 0x74, 0x68, 0x2e, 0x76, 0x31, 0x42, 0x0b, 0x48, 0x65, 0x61, 0x6c, 0x74, 0x68, 0x50,
 	0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x2c, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x67,
 	0x6f, 0x6c, 0x61, 0x6e, 0x67, 0x2e, 0x6f, 0x72, 0x67, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x2f, 0x68,
 	0x65, 0x61, 0x6c, 0x74, 0x68, 0x2f, 0x67, 0x72, 0x70, 0x63, 0x5f, 0x68, 0x65, 0x61, 0x6c, 0x74,
-	0x68, 0x5f, 0x76, 0x31, 0xaa, 0x02, 0x0e, 0x47, 0x72, 0x70, 0x63, 0x2e, 0x48, 0x65, 0x61, 0x6c,
+	0x68, 0x5f, 0x76, 0x31, 0xa2, 0x02, 0x0c, 0x47, 0x72, 0x70, 0x63, 0x48, 0x65, 0x61, 0x6c, 0x74,
-	0x74, 0x68, 0x2e, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x68, 0x56, 0x31, 0xaa, 0x02, 0x0e, 0x47, 0x72, 0x70, 0x63, 0x2e, 0x48, 0x65, 0x61, 0x6c, 0x74,
-}
+	0x68, 0x2e, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+})
 
 var (
 	file_grpc_health_v1_health_proto_rawDescOnce sync.Once
-	file_grpc_health_v1_health_proto_rawDescData = file_grpc_health_v1_health_proto_rawDesc
+	file_grpc_health_v1_health_proto_rawDescData []byte
 )
 
 func file_grpc_health_v1_health_proto_rawDescGZIP() []byte {
 	file_grpc_health_v1_health_proto_rawDescOnce.Do(func() {
-		file_grpc_health_v1_health_proto_rawDescData = protoimpl.X.CompressGZIP(file_grpc_health_v1_health_proto_rawDescData)
+		file_grpc_health_v1_health_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_grpc_health_v1_health_proto_rawDesc), len(file_grpc_health_v1_health_proto_rawDesc)))
 	})
 	return file_grpc_health_v1_health_proto_rawDescData
 }
@@ -260,7 +260,7 @@ func file_grpc_health_v1_health_proto_init() {
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_grpc_health_v1_health_proto_rawDesc,
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_grpc_health_v1_health_proto_rawDesc), len(file_grpc_health_v1_health_proto_rawDesc)),
 			NumEnums:      1,
 			NumMessages:   2,
 			NumExtensions: 0,
@@ -272,7 +272,6 @@ func file_grpc_health_v1_health_proto_init() {
 		MessageInfos:      file_grpc_health_v1_health_proto_msgTypes,
 	}.Build()
 	File_grpc_health_v1_health_proto = out.File
-	file_grpc_health_v1_health_proto_rawDesc = nil
 	file_grpc_health_v1_health_proto_goTypes = nil
 	file_grpc_health_v1_health_proto_depIdxs = nil
 }

vendor/google.golang.org/grpc/internal/balancer/gracefulswitch/gracefulswitch.go

@@ -109,8 +109,9 @@ func (gsb *Balancer) switchTo(builder balancer.Builder) (*balancerWrapper, error
 		return nil, errBalancerClosed
 	}
 	bw := &balancerWrapper{
-		builder: builder,
+		ClientConn: gsb.cc,
-		gsb:     gsb,
+		builder:    builder,
+		gsb:        gsb,
 		lastState: balancer.State{
 			ConnectivityState: connectivity.Connecting,
 			Picker:            base.NewErrPicker(balancer.ErrNoSubConnAvailable),
@@ -293,6 +294,7 @@ func (gsb *Balancer) Close() {
 // State updates from the wrapped balancer can result in invocation of the
 // graceful switch logic.
 type balancerWrapper struct {
+	balancer.ClientConn
 	balancer.Balancer
 	gsb     *Balancer
 	builder balancer.Builder
@@ -413,7 +415,3 @@ func (bw *balancerWrapper) UpdateAddresses(sc balancer.SubConn, addrs []resolver
 	bw.gsb.mu.Unlock()
 	bw.gsb.cc.UpdateAddresses(sc, addrs)
 }
-
-func (bw *balancerWrapper) Target() string {
-	return bw.gsb.cc.Target()
-}

vendor/google.golang.org/grpc/internal/envconfig/xds.go

@@ -56,7 +56,11 @@ var (
 
 	// XDSDualstackEndpointsEnabled is true if gRPC should read the
 	// "additional addresses" in the xDS endpoint resource.
-	// TODO: https://github.com/grpc/grpc-go/issues/7866 - Control this using
+	XDSDualstackEndpointsEnabled = boolFromEnv("GRPC_EXPERIMENTAL_XDS_DUALSTACK_ENDPOINTS", true)
-	// an env variable when all LB policies handle endpoints.
+
-	XDSDualstackEndpointsEnabled = false
+	// XDSSystemRootCertsEnabled is true when xDS enabled gRPC clients can use
+	// the system's default root certificates for TLS certificate validation.
+	// For more details, see:
+	// https://github.com/grpc/proposal/blob/master/A82-xds-system-root-certs.md.
+	XDSSystemRootCertsEnabled = boolFromEnv("GRPC_EXPERIMENTAL_XDS_SYSTEM_ROOT_CERTS", false)
 )

vendor/google.golang.org/grpc/internal/grpcsync/oncefunc.go

@@ -1,32 +0,0 @@
-/*
- *
- * Copyright 2022 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package grpcsync
-
-import (
-	"sync"
-)
-
-// OnceFunc returns a function wrapping f which ensures f is only executed
-// once even if the returned function is executed multiple times.
-func OnceFunc(f func()) func() {
-	var once sync.Once
-	return func() {
-		once.Do(f)
-	}
-}

vendor/google.golang.org/grpc/internal/internal.go

@@ -64,6 +64,9 @@ var (
 	// gRPC server. An xDS-enabled server needs to know what type of credentials
 	// is configured on the underlying gRPC server. This is set by server.go.
 	GetServerCredentials any // func (*grpc.Server) credentials.TransportCredentials
+	// MetricsRecorderForServer returns the MetricsRecorderList derived from a
+	// server's stats handlers.
+	MetricsRecorderForServer any // func (*grpc.Server) estats.MetricsRecorder
 	// CanonicalString returns the canonical string of the code defined here:
 	// https://github.com/grpc/grpc/blob/master/doc/statuscodes.md.
 	//
@@ -151,6 +154,20 @@ var (
 	// other features, including the CSDS service.
 	NewXDSResolverWithConfigForTesting any // func([]byte) (resolver.Builder, error)
 
+	// NewXDSResolverWithPoolForTesting creates a new xDS resolver builder
+	// using the provided xDS pool instead of creating a new one using the
+	// bootstrap configuration specified by the supported environment variables.
+	// The resolver.Builder is meant to be used in conjunction with the
+	// grpc.WithResolvers DialOption. The resolver.Builder does not take
+	// ownership of the provided xDS client and it is the responsibility of the
+	// caller to close the client when no longer required.
+	//
+	// Testing Only
+	//
+	// This function should ONLY be used for testing and may not work with some
+	// other features, including the CSDS service.
+	NewXDSResolverWithPoolForTesting any // func(*xdsclient.Pool) (resolver.Builder, error)
+
 	// NewXDSResolverWithClientForTesting creates a new xDS resolver builder
 	// using the provided xDS client instead of creating a new one using the
 	// bootstrap configuration specified by the supported environment variables.
@@ -277,3 +294,9 @@ const RLSLoadBalancingPolicyName = "rls_experimental"
 type EnforceSubConnEmbedding interface {
 	enforceSubConnEmbedding()
 }
+
+// EnforceClientConnEmbedding is used to enforce proper ClientConn implementation
+// embedding.
+type EnforceClientConnEmbedding interface {
+	enforceClientConnEmbedding()
+}

vendor/google.golang.org/grpc/internal/proxyattributes/proxyattributes.go

@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2024 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package proxyattributes contains functions for getting and setting proxy
+// attributes like the CONNECT address and user info.
+package proxyattributes
+
+import (
+	"net/url"
+
+	"google.golang.org/grpc/resolver"
+)
+
+type keyType string
+
+const proxyOptionsKey = keyType("grpc.resolver.delegatingresolver.proxyOptions")
+
+// Options holds the proxy connection details needed during the CONNECT
+// handshake.
+type Options struct {
+	User        *url.Userinfo
+	ConnectAddr string
+}
+
+// Set returns a copy of addr with opts set in its attributes.
+func Set(addr resolver.Address, opts Options) resolver.Address {
+	addr.Attributes = addr.Attributes.WithValue(proxyOptionsKey, opts)
+	return addr
+}
+
+// Get returns the Options for the proxy [resolver.Address] and a boolean
+// value representing if the attribute is present or not. The returned data
+// should not be mutated.
+func Get(addr resolver.Address) (Options, bool) {
+	if a := addr.Attributes.Value(proxyOptionsKey); a != nil {
+		return a.(Options), true
+	}
+	return Options{}, false
+}

vendor/google.golang.org/grpc/internal/resolver/delegatingresolver/delegatingresolver.go

@@ -0,0 +1,329 @@
+/*
+ *
+ * Copyright 2024 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package delegatingresolver implements a resolver capable of resolving both
+// target URIs and proxy addresses.
+package delegatingresolver
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"sync"
+
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/internal/proxyattributes"
+	"google.golang.org/grpc/resolver"
+	"google.golang.org/grpc/serviceconfig"
+)
+
+var (
+	logger = grpclog.Component("delegating-resolver")
+	// HTTPSProxyFromEnvironment will be overwritten in the tests
+	HTTPSProxyFromEnvironment = http.ProxyFromEnvironment
+)
+
+// delegatingResolver manages both target URI and proxy address resolution by
+// delegating these tasks to separate child resolvers. Essentially, it acts as
+// a intermediary between the gRPC ClientConn and the child resolvers.
+//
+// It implements the [resolver.Resolver] interface.
+type delegatingResolver struct {
+	target         resolver.Target     // parsed target URI to be resolved
+	cc             resolver.ClientConn // gRPC ClientConn
+	targetResolver resolver.Resolver   // resolver for the target URI, based on its scheme
+	proxyResolver  resolver.Resolver   // resolver for the proxy URI; nil if no proxy is configured
+	proxyURL       *url.URL            // proxy URL, derived from proxy environment and target
+
+	mu                  sync.Mutex         // protects all the fields below
+	targetResolverState *resolver.State    // state of the target resolver
+	proxyAddrs          []resolver.Address // resolved proxy addresses; empty if no proxy is configured
+}
+
+// nopResolver is a resolver that does nothing.
+type nopResolver struct{}
+
+func (nopResolver) ResolveNow(resolver.ResolveNowOptions) {}
+
+func (nopResolver) Close() {}
+
+// proxyURLForTarget determines the proxy URL for the given address based on
+// the environment. It can return the following:
+//   - nil URL, nil error: No proxy is configured or the address is excluded
+//     using the `NO_PROXY` environment variable or if req.URL.Host is
+//     "localhost" (with or without // a port number)
+//   - nil URL, non-nil error: An error occurred while retrieving the proxy URL.
+//   - non-nil URL, nil error: A proxy is configured, and the proxy URL was
+//     retrieved successfully without any errors.
+func proxyURLForTarget(address string) (*url.URL, error) {
+	req := &http.Request{URL: &url.URL{
+		Scheme: "https",
+		Host:   address,
+	}}
+	return HTTPSProxyFromEnvironment(req)
+}
+
+// New creates a new delegating resolver that can create up to two child
+// resolvers:
+//   - one to resolve the proxy address specified using the supported
+//     environment variables. This uses the registered resolver for the "dns"
+//     scheme.
+//   - one to resolve the target URI using the resolver specified by the scheme
+//     in the target URI or specified by the user using the WithResolvers dial
+//     option. As a special case, if the target URI's scheme is "dns" and a
+//     proxy is specified using the supported environment variables, the target
+//     URI's path portion is used as the resolved address unless target
+//     resolution is enabled using the dial option.
+func New(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions, targetResolverBuilder resolver.Builder, targetResolutionEnabled bool) (resolver.Resolver, error) {
+	r := &delegatingResolver{
+		target: target,
+		cc:     cc,
+	}
+
+	var err error
+	r.proxyURL, err = proxyURLForTarget(target.Endpoint())
+	if err != nil {
+		return nil, fmt.Errorf("delegating_resolver: failed to determine proxy URL for target %s: %v", target, err)
+	}
+
+	// proxy is not configured or proxy address excluded using `NO_PROXY` env
+	// var, so only target resolver is used.
+	if r.proxyURL == nil {
+		return targetResolverBuilder.Build(target, cc, opts)
+	}
+
+	if logger.V(2) {
+		logger.Infof("Proxy URL detected : %s", r.proxyURL)
+	}
+
+	// When the scheme is 'dns' and target resolution on client is not enabled,
+	// resolution should be handled by the proxy, not the client. Therefore, we
+	// bypass the target resolver and store the unresolved target address.
+	if target.URL.Scheme == "dns" && !targetResolutionEnabled {
+		state := resolver.State{
+			Addresses: []resolver.Address{{Addr: target.Endpoint()}},
+			Endpoints: []resolver.Endpoint{{Addresses: []resolver.Address{{Addr: target.Endpoint()}}}},
+		}
+		r.targetResolverState = &state
+	} else {
+		wcc := &wrappingClientConn{
+			stateListener: r.updateTargetResolverState,
+			parent:        r,
+		}
+		if r.targetResolver, err = targetResolverBuilder.Build(target, wcc, opts); err != nil {
+			return nil, fmt.Errorf("delegating_resolver: unable to build the resolver for target %s: %v", target, err)
+		}
+	}
+
+	if r.proxyResolver, err = r.proxyURIResolver(opts); err != nil {
+		return nil, fmt.Errorf("delegating_resolver: failed to build resolver for proxy URL %q: %v", r.proxyURL, err)
+	}
+
+	if r.targetResolver == nil {
+		r.targetResolver = nopResolver{}
+	}
+	if r.proxyResolver == nil {
+		r.proxyResolver = nopResolver{}
+	}
+	return r, nil
+}
+
+// proxyURIResolver creates a resolver for resolving proxy URIs using the
+// "dns" scheme. It adjusts the proxyURL to conform to the "dns:///" format and
+// builds a resolver with a wrappingClientConn to capture resolved addresses.
+func (r *delegatingResolver) proxyURIResolver(opts resolver.BuildOptions) (resolver.Resolver, error) {
+	proxyBuilder := resolver.Get("dns")
+	if proxyBuilder == nil {
+		panic("delegating_resolver: resolver for proxy not found for scheme dns")
+	}
+	url := *r.proxyURL
+	url.Scheme = "dns"
+	url.Path = "/" + r.proxyURL.Host
+	url.Host = "" // Clear the Host field to conform to the "dns:///" format
+
+	proxyTarget := resolver.Target{URL: url}
+	wcc := &wrappingClientConn{
+		stateListener: r.updateProxyResolverState,
+		parent:        r,
+	}
+	return proxyBuilder.Build(proxyTarget, wcc, opts)
+}
+
+func (r *delegatingResolver) ResolveNow(o resolver.ResolveNowOptions) {
+	r.targetResolver.ResolveNow(o)
+	r.proxyResolver.ResolveNow(o)
+}
+
+func (r *delegatingResolver) Close() {
+	r.targetResolver.Close()
+	r.targetResolver = nil
+
+	r.proxyResolver.Close()
+	r.proxyResolver = nil
+}
+
+// updateClientConnStateLocked creates a list of combined addresses by
+// pairing each proxy address with every target address. For each pair, it
+// generates a new [resolver.Address] using the proxy address, and adding the
+// target address as the attribute along with user info. It returns nil if
+// either resolver has not sent update even once and returns the error from
+// ClientConn update once both resolvers have sent update atleast once.
+func (r *delegatingResolver) updateClientConnStateLocked() error {
+	if r.targetResolverState == nil || r.proxyAddrs == nil {
+		return nil
+	}
+
+	curState := *r.targetResolverState
+	// If multiple resolved proxy addresses are present, we send only the
+	// unresolved proxy host and let net.Dial handle the proxy host name
+	// resolution when creating the transport. Sending all resolved addresses
+	// would increase the number of addresses passed to the ClientConn and
+	// subsequently to load balancing (LB) policies like Round Robin, leading
+	// to additional TCP connections. However, if there's only one resolved
+	// proxy address, we send it directly, as it doesn't affect the address
+	// count returned by the target resolver and the address count sent to the
+	// ClientConn.
+	var proxyAddr resolver.Address
+	if len(r.proxyAddrs) == 1 {
+		proxyAddr = r.proxyAddrs[0]
+	} else {
+		proxyAddr = resolver.Address{Addr: r.proxyURL.Host}
+	}
+	var addresses []resolver.Address
+	for _, targetAddr := range (*r.targetResolverState).Addresses {
+		addresses = append(addresses, proxyattributes.Set(proxyAddr, proxyattributes.Options{
+			User:        r.proxyURL.User,
+			ConnectAddr: targetAddr.Addr,
+		}))
+	}
+
+	// Create a list of combined endpoints by pairing all proxy endpoints
+	// with every target endpoint. Each time, it constructs a new
+	// [resolver.Endpoint] using the all addresses from all the proxy endpoint
+	// and the target addresses from one endpoint. The target address and user
+	// information from the proxy URL are added as attributes to the proxy
+	// address.The resulting list of addresses is then grouped into endpoints,
+	// covering all combinations of proxy and target endpoints.
+	var endpoints []resolver.Endpoint
+	for _, endpt := range (*r.targetResolverState).Endpoints {
+		var addrs []resolver.Address
+		for _, proxyAddr := range r.proxyAddrs {
+			for _, targetAddr := range endpt.Addresses {
+				addrs = append(addrs, proxyattributes.Set(proxyAddr, proxyattributes.Options{
+					User:        r.proxyURL.User,
+					ConnectAddr: targetAddr.Addr,
+				}))
+			}
+		}
+		endpoints = append(endpoints, resolver.Endpoint{Addresses: addrs})
+	}
+	// Use the targetResolverState for its service config and attributes
+	// contents. The state update is only sent after both the target and proxy
+	// resolvers have sent their updates, and curState has been updated with
+	// the combined addresses.
+	curState.Addresses = addresses
+	curState.Endpoints = endpoints
+	return r.cc.UpdateState(curState)
+}
+
+// updateProxyResolverState updates the proxy resolver state by storing proxy
+// addresses and endpoints, marking the resolver as ready, and triggering a
+// state update if both proxy and target resolvers are ready. If the ClientConn
+// returns a non-nil error, it calls `ResolveNow()` on the target resolver.  It
+// is a StateListener function of wrappingClientConn passed to the proxy resolver.
+func (r *delegatingResolver) updateProxyResolverState(state resolver.State) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	if logger.V(2) {
+		logger.Infof("Addresses received from proxy resolver: %s", state.Addresses)
+	}
+	if len(state.Endpoints) > 0 {
+		// We expect exactly one address per endpoint because the proxy
+		// resolver uses "dns" resolution.
+		r.proxyAddrs = make([]resolver.Address, 0, len(state.Endpoints))
+		for _, endpoint := range state.Endpoints {
+			r.proxyAddrs = append(r.proxyAddrs, endpoint.Addresses...)
+		}
+	} else if state.Addresses != nil {
+		r.proxyAddrs = state.Addresses
+	} else {
+		r.proxyAddrs = []resolver.Address{} // ensure proxyAddrs is non-nil to indicate an update has been received
+	}
+	err := r.updateClientConnStateLocked()
+	// Another possible approach was to block until updates are received from
+	// both resolvers. But this is not used because calling `New()` triggers
+	// `Build()`  for the first resolver, which calls `UpdateState()`. And the
+	// second resolver hasn't sent an update yet, so it would cause `New()` to
+	// block indefinitely.
+	if err != nil {
+		r.targetResolver.ResolveNow(resolver.ResolveNowOptions{})
+	}
+	return err
+}
+
+// updateTargetResolverState updates the target resolver state by storing target
+// addresses, endpoints, and service config, marking the resolver as ready, and
+// triggering a state update if both resolvers are ready. If the ClientConn
+// returns a non-nil error, it calls `ResolveNow()` on the proxy resolver. It
+// is a StateListener function of wrappingClientConn passed to the target resolver.
+func (r *delegatingResolver) updateTargetResolverState(state resolver.State) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	if logger.V(2) {
+		logger.Infof("Addresses received from target resolver: %v", state.Addresses)
+	}
+	r.targetResolverState = &state
+	err := r.updateClientConnStateLocked()
+	if err != nil {
+		r.proxyResolver.ResolveNow(resolver.ResolveNowOptions{})
+	}
+	return nil
+}
+
+// wrappingClientConn serves as an intermediary between the parent ClientConn
+// and the child resolvers created here. It implements the resolver.ClientConn
+// interface and is passed in that capacity to the child resolvers.
+type wrappingClientConn struct {
+	// Callback to deliver resolver state updates
+	stateListener func(state resolver.State) error
+	parent        *delegatingResolver
+}
+
+// UpdateState receives resolver state updates and forwards them to the
+// appropriate listener function (either for the proxy or target resolver).
+func (wcc *wrappingClientConn) UpdateState(state resolver.State) error {
+	return wcc.stateListener(state)
+}
+
+// ReportError intercepts errors from the child resolvers and passes them to ClientConn.
+func (wcc *wrappingClientConn) ReportError(err error) {
+	wcc.parent.cc.ReportError(err)
+}
+
+// NewAddress intercepts the new resolved address from the child resolvers and
+// passes them to ClientConn.
+func (wcc *wrappingClientConn) NewAddress(addrs []resolver.Address) {
+	wcc.UpdateState(resolver.State{Addresses: addrs})
+}
+
+// ParseServiceConfig parses the provided service config and returns an
+// object that provides the parsed config.
+func (wcc *wrappingClientConn) ParseServiceConfig(serviceConfigJSON string) *serviceconfig.ParseResult {
+	return wcc.parent.cc.ParseServiceConfig(serviceConfigJSON)
+}

vendor/google.golang.org/grpc/internal/transport/http2_client.go

@@ -43,6 +43,7 @@ import (
 	"google.golang.org/grpc/internal/grpcsync"
 	"google.golang.org/grpc/internal/grpcutil"
 	imetadata "google.golang.org/grpc/internal/metadata"
+	"google.golang.org/grpc/internal/proxyattributes"
 	istatus "google.golang.org/grpc/internal/status"
 	isyscall "google.golang.org/grpc/internal/syscall"
 	"google.golang.org/grpc/internal/transport/networktype"
@@ -153,7 +154,7 @@ type http2Client struct {
 	logger       *grpclog.PrefixLogger
 }
 
-func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr resolver.Address, useProxy bool, grpcUA string) (net.Conn, error) {
+func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr resolver.Address, grpcUA string) (net.Conn, error) {
 	address := addr.Addr
 	networkType, ok := networktype.Get(addr)
 	if fn != nil {
@@ -177,8 +178,8 @@ func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error
 	if !ok {
 		networkType, address = parseDialTarget(address)
 	}
-	if networkType == "tcp" && useProxy {
+	if opts, present := proxyattributes.Get(addr); present {
-		return proxyDial(ctx, address, grpcUA)
+		return proxyDial(ctx, addr, grpcUA, opts)
 	}
 	return internal.NetDialerWithTCPKeepalive().DialContext(ctx, networkType, address)
 }
@@ -217,7 +218,7 @@ func NewHTTP2Client(connectCtx, ctx context.Context, addr resolver.Address, opts
 	// address specific arbitrary data to reach custom dialers and credential handshakers.
 	connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes})
 
-	conn, err := dial(connectCtx, opts.Dialer, addr, opts.UseProxy, opts.UserAgent)
+	conn, err := dial(connectCtx, opts.Dialer, addr, opts.UserAgent)
 	if err != nil {
 		if opts.FailOnNonTempDialError {
 			return nil, connectionErrorf(isTemporary(err), err, "transport: error while dialing: %v", err)

vendor/google.golang.org/grpc/internal/transport/proxy.go

@@ -30,34 +30,16 @@ import (
 	"net/url"
 
 	"google.golang.org/grpc/internal"
+	"google.golang.org/grpc/internal/proxyattributes"
+	"google.golang.org/grpc/resolver"
 )
 
 const proxyAuthHeaderKey = "Proxy-Authorization"
 
-var (
-	// The following variable will be overwritten in the tests.
-	httpProxyFromEnvironment = http.ProxyFromEnvironment
-)
-
-func mapAddress(address string) (*url.URL, error) {
-	req := &http.Request{
-		URL: &url.URL{
-			Scheme: "https",
-			Host:   address,
-		},
-	}
-	url, err := httpProxyFromEnvironment(req)
-	if err != nil {
-		return nil, err
-	}
-	return url, nil
-}
-
 // To read a response from a net.Conn, http.ReadResponse() takes a bufio.Reader.
-// It's possible that this reader reads more than what's need for the response and stores
+// It's possible that this reader reads more than what's need for the response
-// those bytes in the buffer.
+// and stores those bytes in the buffer. bufConn wraps the original net.Conn
-// bufConn wraps the original net.Conn and the bufio.Reader to make sure we don't lose the
+// and the bufio.Reader to make sure we don't lose the bytes in the buffer.
-// bytes in the buffer.
 type bufConn struct {
 	net.Conn
 	r io.Reader
@@ -72,7 +54,7 @@ func basicAuth(username, password string) string {
 	return base64.StdEncoding.EncodeToString([]byte(auth))
 }
 
-func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, backendAddr string, proxyURL *url.URL, grpcUA string) (_ net.Conn, err error) {
+func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, grpcUA string, opts proxyattributes.Options) (_ net.Conn, err error) {
 	defer func() {
 		if err != nil {
 			conn.Close()
@@ -81,15 +63,14 @@ func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, backendAddr stri
 
 	req := &http.Request{
 		Method: http.MethodConnect,
-		URL:    &url.URL{Host: backendAddr},
+		URL:    &url.URL{Host: opts.ConnectAddr},
 		Header: map[string][]string{"User-Agent": {grpcUA}},
 	}
-	if t := proxyURL.User; t != nil {
+	if user := opts.User; user != nil {
-		u := t.Username()
+		u := user.Username()
-		p, _ := t.Password()
+		p, _ := user.Password()
 		req.Header.Add(proxyAuthHeaderKey, "Basic "+basicAuth(u, p))
 	}
-
 	if err := sendHTTPRequest(ctx, req, conn); err != nil {
 		return nil, fmt.Errorf("failed to write the HTTP request: %v", err)
 	}
@@ -117,28 +98,13 @@ func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, backendAddr stri
 	return conn, nil
 }
 
-// proxyDial dials, connecting to a proxy first if necessary. Checks if a proxy
+// proxyDial establishes a TCP connection to the specified address and performs an HTTP CONNECT handshake.
-// is necessary, dials, does the HTTP CONNECT handshake, and returns the
+func proxyDial(ctx context.Context, addr resolver.Address, grpcUA string, opts proxyattributes.Options) (net.Conn, error) {
-// connection.
+	conn, err := internal.NetDialerWithTCPKeepalive().DialContext(ctx, "tcp", addr.Addr)
-func proxyDial(ctx context.Context, addr string, grpcUA string) (net.Conn, error) {
-	newAddr := addr
-	proxyURL, err := mapAddress(addr)
 	if err != nil {
 		return nil, err
 	}
-	if proxyURL != nil {
+	return doHTTPConnectHandshake(ctx, conn, grpcUA, opts)
-		newAddr = proxyURL.Host
-	}
-
-	conn, err := internal.NetDialerWithTCPKeepalive().DialContext(ctx, "tcp", newAddr)
-	if err != nil {
-		return nil, err
-	}
-	if proxyURL == nil {
-		// proxy is disabled if proxyURL is nil.
-		return conn, err
-	}
-	return doHTTPConnectHandshake(ctx, conn, addr, proxyURL, grpcUA)
 }
 
 func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error {

vendor/google.golang.org/grpc/internal/transport/transport.go

@@ -502,8 +502,6 @@ type ConnectOptions struct {
 	ChannelzParent *channelz.SubChannel
 	// MaxHeaderListSize sets the max (uncompressed) size of header list that is prepared to be received.
 	MaxHeaderListSize *uint32
-	// UseProxy specifies if a proxy should be used.
-	UseProxy bool
 	// The mem.BufferPool to use when reading/writing to the wire.
 	BufferPool mem.BufferPool
 }

vendor/google.golang.org/grpc/picker_wrapper.go

@@ -123,7 +123,7 @@ func (pw *pickerWrapper) pick(ctx context.Context, failfast bool, info balancer.
 				if lastPickErr != nil {
 					errStr = "latest balancer error: " + lastPickErr.Error()
 				} else {
-					errStr = fmt.Sprintf("received context error while waiting for new LB policy update: %s", ctx.Err().Error())
+					errStr = fmt.Sprintf("%v while waiting for connections to become ready", ctx.Err())
 				}
 				switch ctx.Err() {
 				case context.DeadlineExceeded:

vendor/google.golang.org/grpc/resolver/resolver.go

@@ -30,6 +30,7 @@ import (
 
 	"google.golang.org/grpc/attributes"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/experimental/stats"
 	"google.golang.org/grpc/internal"
 	"google.golang.org/grpc/serviceconfig"
 )
@@ -175,6 +176,8 @@ type BuildOptions struct {
 	// Authority is the effective authority of the clientconn for which the
 	// resolver is built.
 	Authority string
+	// MetricsRecorder is the metrics recorder to do recording.
+	MetricsRecorder stats.MetricsRecorder
 }
 
 // An Endpoint is one network endpoint, or server, which may have multiple

vendor/google.golang.org/grpc/resolver_wrapper.go

@@ -26,6 +26,7 @@ import (
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
 	"google.golang.org/grpc/internal/pretty"
+	"google.golang.org/grpc/internal/resolver/delegatingresolver"
 	"google.golang.org/grpc/resolver"
 	"google.golang.org/grpc/serviceconfig"
 )
@@ -76,9 +77,19 @@ func (ccr *ccResolverWrapper) start() error {
 			CredsBundle:          ccr.cc.dopts.copts.CredsBundle,
 			Dialer:               ccr.cc.dopts.copts.Dialer,
 			Authority:            ccr.cc.authority,
+			MetricsRecorder:      ccr.cc.metricsRecorderList,
 		}
 		var err error
-		ccr.resolver, err = ccr.cc.resolverBuilder.Build(ccr.cc.parsedTarget, ccr, opts)
+		// The delegating resolver is used unless:
+		//   - A custom dialer is provided via WithContextDialer dialoption or
+		//   - Proxy usage is disabled through WithNoProxy dialoption.
+		// In these cases, the resolver is built based on the scheme of target,
+		// using the appropriate resolver builder.
+		if ccr.cc.dopts.copts.Dialer != nil || !ccr.cc.dopts.useProxy {
+			ccr.resolver, err = ccr.cc.resolverBuilder.Build(ccr.cc.parsedTarget, ccr, opts)
+		} else {
+			ccr.resolver, err = delegatingresolver.New(ccr.cc.parsedTarget, ccr, opts, ccr.cc.resolverBuilder, ccr.cc.dopts.enableLocalDNSResolution)
+		}
 		errCh <- err
 	})
 	return <-errCh

vendor/google.golang.org/grpc/rpc_util.go

@@ -151,7 +151,7 @@ func (d *gzipDecompressor) Type() string {
 
 // callInfo contains all related configuration and information about an RPC.
 type callInfo struct {
-	compressorType        string
+	compressorName        string
 	failFast              bool
 	maxReceiveMessageSize *int
 	maxSendMessageSize    *int
@@ -222,7 +222,7 @@ type HeaderCallOption struct {
 
 func (o HeaderCallOption) before(*callInfo) error { return nil }
 func (o HeaderCallOption) after(_ *callInfo, attempt *csAttempt) {
-	*o.HeaderAddr, _ = attempt.s.Header()
+	*o.HeaderAddr, _ = attempt.transportStream.Header()
 }
 
 // Trailer returns a CallOptions that retrieves the trailer metadata
@@ -244,7 +244,7 @@ type TrailerCallOption struct {
 
 func (o TrailerCallOption) before(*callInfo) error { return nil }
 func (o TrailerCallOption) after(_ *callInfo, attempt *csAttempt) {
-	*o.TrailerAddr = attempt.s.Trailer()
+	*o.TrailerAddr = attempt.transportStream.Trailer()
 }
 
 // Peer returns a CallOption that retrieves peer information for a unary RPC.
@@ -266,7 +266,7 @@ type PeerCallOption struct {
 
 func (o PeerCallOption) before(*callInfo) error { return nil }
 func (o PeerCallOption) after(_ *callInfo, attempt *csAttempt) {
-	if x, ok := peer.FromContext(attempt.s.Context()); ok {
+	if x, ok := peer.FromContext(attempt.transportStream.Context()); ok {
 		*o.PeerAddr = *x
 	}
 }
@@ -435,7 +435,7 @@ type CompressorCallOption struct {
 }
 
 func (o CompressorCallOption) before(c *callInfo) error {
-	c.compressorType = o.CompressorType
+	c.compressorName = o.CompressorType
 	return nil
 }
 func (o CompressorCallOption) after(*callInfo, *csAttempt) {}
@@ -692,9 +692,9 @@ func encode(c baseCodec, msg any) (mem.BufferSlice, error) {
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error())
 	}
-	if uint(b.Len()) > math.MaxUint32 {
+	if bufSize := uint(b.Len()); bufSize > math.MaxUint32 {
 		b.Free()
-		return nil, status.Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", len(b))
+		return nil, status.Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", bufSize)
 	}
 	return b, nil
 }
@@ -828,30 +828,13 @@ func recvAndDecompress(p *parser, s recvCompressor, dc Decompressor, maxReceiveM
 		return nil, st.Err()
 	}
 
-	var size int
 	if pf.isCompressed() {
 		defer compressed.Free()
-
 		// To match legacy behavior, if the decompressor is set by WithDecompressor or RPCDecompressor,
 		// use this decompressor as the default.
-		if dc != nil {
+		out, err = decompress(compressor, compressed, dc, maxReceiveMessageSize, p.bufferPool)
-			var uncompressedBuf []byte
-			uncompressedBuf, err = dc.Do(compressed.Reader())
-			if err == nil {
-				out = mem.BufferSlice{mem.SliceBuffer(uncompressedBuf)}
-			}
-			size = len(uncompressedBuf)
-		} else {
-			out, size, err = decompress(compressor, compressed, maxReceiveMessageSize, p.bufferPool)
-		}
 		if err != nil {
-			return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message: %v", err)
+			return nil, err
-		}
-		if size > maxReceiveMessageSize {
-			out.Free()
-			// TODO: Revisit the error code. Currently keep it consistent with java
-			// implementation.
-			return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message after decompression larger than max (%d vs. %d)", size, maxReceiveMessageSize)
 		}
 	} else {
 		out = compressed
@@ -866,20 +849,46 @@ func recvAndDecompress(p *parser, s recvCompressor, dc Decompressor, maxReceiveM
 	return out, nil
 }
 
-// Using compressor, decompress d, returning data and size.
+// decompress processes the given data by decompressing it using either a custom decompressor or a standard compressor.
-// Optionally, if data will be over maxReceiveMessageSize, just return the size.
+// If a custom decompressor is provided, it takes precedence. The function validates that the decompressed data
-func decompress(compressor encoding.Compressor, d mem.BufferSlice, maxReceiveMessageSize int, pool mem.BufferPool) (mem.BufferSlice, int, error) {
+// does not exceed the specified maximum size and returns an error if this limit is exceeded.
-	dcReader, err := compressor.Decompress(d.Reader())
+// On success, it returns the decompressed data. Otherwise, it returns an error if decompression fails or the data exceeds the size limit.
-	if err != nil {
+func decompress(compressor encoding.Compressor, d mem.BufferSlice, dc Decompressor, maxReceiveMessageSize int, pool mem.BufferPool) (mem.BufferSlice, error) {
-		return nil, 0, err
+	if dc != nil {
+		uncompressed, err := dc.Do(d.Reader())
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message: %v", err)
+		}
+		if len(uncompressed) > maxReceiveMessageSize {
+			return nil, status.Errorf(codes.ResourceExhausted, "grpc: message after decompression larger than max (%d vs. %d)", len(uncompressed), maxReceiveMessageSize)
+		}
+		return mem.BufferSlice{mem.SliceBuffer(uncompressed)}, nil
 	}
+	if compressor != nil {
+		dcReader, err := compressor.Decompress(d.Reader())
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the message: %v", err)
+		}
 
-	out, err := mem.ReadAll(io.LimitReader(dcReader, int64(maxReceiveMessageSize)+1), pool)
+		out, err := mem.ReadAll(io.LimitReader(dcReader, int64(maxReceiveMessageSize)), pool)
-	if err != nil {
+		if err != nil {
-		out.Free()
+			out.Free()
-		return nil, 0, err
+			return nil, status.Errorf(codes.Internal, "grpc: failed to read decompressed data: %v", err)
+		}
+
+		if out.Len() == maxReceiveMessageSize && !atEOF(dcReader) {
+			out.Free()
+			return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message after decompression larger than max %d", maxReceiveMessageSize)
+		}
+		return out, nil
 	}
-	return out, out.Len(), nil
+	return nil, status.Errorf(codes.Internal, "grpc: no decompressor available for compressed payload")
+}
+
+// atEOF reads data from r and returns true if zero bytes could be read and r.Read returns EOF.
+func atEOF(dcReader io.Reader) bool {
+	n, err := dcReader.Read(make([]byte, 1))
+	return n == 0 && err == io.EOF
 }
 
 type recvCompressor interface {

vendor/google.golang.org/grpc/server.go

@@ -37,12 +37,14 @@ import (
 	"google.golang.org/grpc/credentials"
 	"google.golang.org/grpc/encoding"
 	"google.golang.org/grpc/encoding/proto"
+	estats "google.golang.org/grpc/experimental/stats"
 	"google.golang.org/grpc/grpclog"
 	"google.golang.org/grpc/internal"
 	"google.golang.org/grpc/internal/binarylog"
 	"google.golang.org/grpc/internal/channelz"
 	"google.golang.org/grpc/internal/grpcsync"
 	"google.golang.org/grpc/internal/grpcutil"
+	istats "google.golang.org/grpc/internal/stats"
 	"google.golang.org/grpc/internal/transport"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/mem"
@@ -82,6 +84,9 @@ func init() {
 	internal.BinaryLogger = binaryLogger
 	internal.JoinServerOptions = newJoinServerOption
 	internal.BufferPool = bufferPool
+	internal.MetricsRecorderForServer = func(srv *Server) estats.MetricsRecorder {
+		return istats.NewMetricsRecorderList(srv.opts.statsHandlers)
+	}
 }
 
 var statusOK = status.New(codes.OK, "")
@@ -643,7 +648,7 @@ func (s *Server) serverWorker() {
 // connections to reduce the time spent overall on runtime.morestack.
 func (s *Server) initServerWorkers() {
 	s.serverWorkerChannel = make(chan func())
-	s.serverWorkerChannelClose = grpcsync.OnceFunc(func() {
+	s.serverWorkerChannelClose = sync.OnceFunc(func() {
 		close(s.serverWorkerChannel)
 	})
 	for i := uint32(0); i < s.opts.numServerWorkers; i++ {
@@ -1645,10 +1650,10 @@ func (s *Server) processStreamingRPC(ctx context.Context, stream *transport.Serv
 	// If dc is set and matches the stream's compression, use it.  Otherwise, try
 	// to find a matching registered compressor for decomp.
 	if rc := stream.RecvCompress(); s.opts.dc != nil && s.opts.dc.Type() == rc {
-		ss.dc = s.opts.dc
+		ss.decompressorV0 = s.opts.dc
 	} else if rc != "" && rc != encoding.Identity {
-		ss.decomp = encoding.GetCompressor(rc)
+		ss.decompressorV1 = encoding.GetCompressor(rc)
-		if ss.decomp == nil {
+		if ss.decompressorV1 == nil {
 			st := status.Newf(codes.Unimplemented, "grpc: Decompressor is not installed for grpc-encoding %q", rc)
 			ss.s.WriteStatus(st)
 			return st.Err()
@@ -1660,12 +1665,12 @@ func (s *Server) processStreamingRPC(ctx context.Context, stream *transport.Serv
 	//
 	// NOTE: this needs to be ahead of all handling, https://github.com/grpc/grpc-go/issues/686.
 	if s.opts.cp != nil {
-		ss.cp = s.opts.cp
+		ss.compressorV0 = s.opts.cp
 		ss.sendCompressorName = s.opts.cp.Type()
 	} else if rc := stream.RecvCompress(); rc != "" && rc != encoding.Identity {
 		// Legacy compressor not specified; attempt to respond with same encoding.
-		ss.comp = encoding.GetCompressor(rc)
+		ss.compressorV1 = encoding.GetCompressor(rc)
-		if ss.comp != nil {
+		if ss.compressorV1 != nil {
 			ss.sendCompressorName = rc
 		}
 	}
@@ -1676,7 +1681,7 @@ func (s *Server) processStreamingRPC(ctx context.Context, stream *transport.Serv
 		}
 	}
 
-	ss.ctx = newContextWithRPCInfo(ss.ctx, false, ss.codec, ss.cp, ss.comp)
+	ss.ctx = newContextWithRPCInfo(ss.ctx, false, ss.codec, ss.compressorV0, ss.compressorV1)
 
 	if trInfo != nil {
 		trInfo.tr.LazyLog(&trInfo.firstLine, false)
@@ -1930,7 +1935,7 @@ func (s *Server) stop(graceful bool) {
 	s.conns = nil
 
 	if s.opts.numServerWorkers > 0 {
-		// Closing the channel (only once, via grpcsync.OnceFunc) after all the
+		// Closing the channel (only once, via sync.OnceFunc) after all the
 		// connections have been closed above ensures that there are no
 		// goroutines executing the callback passed to st.HandleStreams (where
 		// the channel is written to).

vendor/google.golang.org/grpc/stream.go

@@ -258,9 +258,9 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth
 }
 
 func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, mc serviceconfig.MethodConfig, onCommit, doneFunc func(), opts ...CallOption) (_ iresolver.ClientStream, err error) {
-	c := defaultCallInfo()
+	callInfo := defaultCallInfo()
 	if mc.WaitForReady != nil {
-		c.failFast = !*mc.WaitForReady
+		callInfo.failFast = !*mc.WaitForReady
 	}
 
 	// Possible context leak:
@@ -281,20 +281,20 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client
 	}()
 
 	for _, o := range opts {
-		if err := o.before(c); err != nil {
+		if err := o.before(callInfo); err != nil {
 			return nil, toRPCErr(err)
 		}
 	}
-	c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize)
+	callInfo.maxSendMessageSize = getMaxSize(mc.MaxReqSize, callInfo.maxSendMessageSize, defaultClientMaxSendMessageSize)
-	c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize)
+	callInfo.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, callInfo.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize)
-	if err := setCallInfoCodec(c); err != nil {
+	if err := setCallInfoCodec(callInfo); err != nil {
 		return nil, err
 	}
 
 	callHdr := &transport.CallHdr{
 		Host:           cc.authority,
 		Method:         method,
-		ContentSubtype: c.contentSubtype,
+		ContentSubtype: callInfo.contentSubtype,
 		DoneFunc:       doneFunc,
 	}
 
@@ -302,22 +302,22 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client
 	// set.  In that case, also find the compressor from the encoding package.
 	// Otherwise, use the compressor configured by the WithCompressor DialOption,
 	// if set.
-	var cp Compressor
+	var compressorV0 Compressor
-	var comp encoding.Compressor
+	var compressorV1 encoding.Compressor
-	if ct := c.compressorType; ct != "" {
+	if ct := callInfo.compressorName; ct != "" {
 		callHdr.SendCompress = ct
 		if ct != encoding.Identity {
-			comp = encoding.GetCompressor(ct)
+			compressorV1 = encoding.GetCompressor(ct)
-			if comp == nil {
+			if compressorV1 == nil {
 				return nil, status.Errorf(codes.Internal, "grpc: Compressor is not installed for requested grpc-encoding %q", ct)
 			}
 		}
-	} else if cc.dopts.cp != nil {
+	} else if cc.dopts.compressorV0 != nil {
-		callHdr.SendCompress = cc.dopts.cp.Type()
+		callHdr.SendCompress = cc.dopts.compressorV0.Type()
-		cp = cc.dopts.cp
+		compressorV0 = cc.dopts.compressorV0
 	}
-	if c.creds != nil {
+	if callInfo.creds != nil {
-		callHdr.Creds = c.creds
+		callHdr.Creds = callInfo.creds
 	}
 
 	cs := &clientStream{
@@ -325,12 +325,12 @@ func newClientStreamWithParams(ctx context.Context, desc *StreamDesc, cc *Client
 		ctx:          ctx,
 		methodConfig: &mc,
 		opts:         opts,
-		callInfo:     c,
+		callInfo:     callInfo,
 		cc:           cc,
 		desc:         desc,
-		codec:        c.codec,
+		codec:        callInfo.codec,
-		cp:           cp,
+		compressorV0: compressorV0,
-		comp:         comp,
+		compressorV1: compressorV1,
 		cancel:       cancel,
 		firstAttempt: true,
 		onCommit:     onCommit,
@@ -412,7 +412,7 @@ func (cs *clientStream) newAttemptLocked(isTransparent bool) (*csAttempt, error)
 		return nil, ErrClientConnClosing
 	}
 
-	ctx := newContextWithRPCInfo(cs.ctx, cs.callInfo.failFast, cs.callInfo.codec, cs.cp, cs.comp)
+	ctx := newContextWithRPCInfo(cs.ctx, cs.callInfo.failFast, cs.callInfo.codec, cs.compressorV0, cs.compressorV1)
 	method := cs.callHdr.Method
 	var beginTime time.Time
 	shs := cs.cc.dopts.copts.StatsHandlers
@@ -454,12 +454,12 @@ func (cs *clientStream) newAttemptLocked(isTransparent bool) (*csAttempt, error)
 	}
 
 	return &csAttempt{
-		ctx:           ctx,
+		ctx:            ctx,
-		beginTime:     beginTime,
+		beginTime:      beginTime,
-		cs:            cs,
+		cs:             cs,
-		dc:            cs.cc.dopts.dc,
+		decompressorV0: cs.cc.dopts.dc,
-		statsHandlers: shs,
+		statsHandlers:  shs,
-		trInfo:        trInfo,
+		trInfo:         trInfo,
 	}, nil
 }
 
@@ -467,7 +467,7 @@ func (a *csAttempt) getTransport() error {
 	cs := a.cs
 
 	var err error
-	a.t, a.pickResult, err = cs.cc.getTransport(a.ctx, cs.callInfo.failFast, cs.callHdr.Method)
+	a.transport, a.pickResult, err = cs.cc.getTransport(a.ctx, cs.callInfo.failFast, cs.callHdr.Method)
 	if err != nil {
 		if de, ok := err.(dropError); ok {
 			err = de.error
@@ -476,7 +476,7 @@ func (a *csAttempt) getTransport() error {
 		return err
 	}
 	if a.trInfo != nil {
-		a.trInfo.firstLine.SetRemoteAddr(a.t.RemoteAddr())
+		a.trInfo.firstLine.SetRemoteAddr(a.transport.RemoteAddr())
 	}
 	return nil
 }
@@ -503,7 +503,7 @@ func (a *csAttempt) newStream() error {
 		a.ctx = metadata.NewOutgoingContext(a.ctx, md)
 	}
 
-	s, err := a.t.NewStream(a.ctx, cs.callHdr)
+	s, err := a.transport.NewStream(a.ctx, cs.callHdr)
 	if err != nil {
 		nse, ok := err.(*transport.NewStreamError)
 		if !ok {
@@ -518,9 +518,9 @@ func (a *csAttempt) newStream() error {
 		// Unwrap and convert error.
 		return toRPCErr(nse.Err)
 	}
-	a.s = s
+	a.transportStream = s
 	a.ctx = s.Context()
-	a.p = &parser{r: s, bufferPool: a.cs.cc.dopts.copts.BufferPool}
+	a.parser = &parser{r: s, bufferPool: a.cs.cc.dopts.copts.BufferPool}
 	return nil
 }
 
@@ -532,9 +532,9 @@ type clientStream struct {
 	cc       *ClientConn
 	desc     *StreamDesc
 
-	codec baseCodec
+	codec        baseCodec
-	cp    Compressor
+	compressorV0 Compressor
-	comp  encoding.Compressor
+	compressorV1 encoding.Compressor
 
 	cancel context.CancelFunc // cancels all attempts
 
@@ -583,17 +583,17 @@ type replayOp struct {
 // csAttempt implements a single transport stream attempt within a
 // clientStream.
 type csAttempt struct {
-	ctx        context.Context
+	ctx             context.Context
-	cs         *clientStream
+	cs              *clientStream
-	t          transport.ClientTransport
+	transport       transport.ClientTransport
-	s          *transport.ClientStream
+	transportStream *transport.ClientStream
-	p          *parser
+	parser          *parser
-	pickResult balancer.PickResult
+	pickResult      balancer.PickResult
 
-	finished  bool
+	finished        bool
-	dc        Decompressor
+	decompressorV0  Decompressor
-	decomp    encoding.Compressor
+	decompressorV1  encoding.Compressor
-	decompSet bool
+	decompressorSet bool
 
 	mu sync.Mutex // guards trInfo.tr
 	// trInfo may be nil (if EnableTracing is false).
@@ -639,14 +639,14 @@ func (a *csAttempt) shouldRetry(err error) (bool, error) {
 		// RPC is finished or committed or was dropped by the picker; cannot retry.
 		return false, err
 	}
-	if a.s == nil && a.allowTransparentRetry {
+	if a.transportStream == nil && a.allowTransparentRetry {
 		return true, nil
 	}
 	// Wait for the trailers.
 	unprocessed := false
-	if a.s != nil {
+	if a.transportStream != nil {
-		<-a.s.Done()
+		<-a.transportStream.Done()
-		unprocessed = a.s.Unprocessed()
+		unprocessed = a.transportStream.Unprocessed()
 	}
 	if cs.firstAttempt && unprocessed {
 		// First attempt, stream unprocessed: transparently retry.
@@ -658,14 +658,14 @@ func (a *csAttempt) shouldRetry(err error) (bool, error) {
 
 	pushback := 0
 	hasPushback := false
-	if a.s != nil {
+	if a.transportStream != nil {
-		if !a.s.TrailersOnly() {
+		if !a.transportStream.TrailersOnly() {
 			return false, err
 		}
 
 		// TODO(retry): Move down if the spec changes to not check server pushback
 		// before considering this a failure for throttling.
-		sps := a.s.Trailer()["grpc-retry-pushback-ms"]
+		sps := a.transportStream.Trailer()["grpc-retry-pushback-ms"]
 		if len(sps) == 1 {
 			var e error
 			if pushback, e = strconv.Atoi(sps[0]); e != nil || pushback < 0 {
@@ -682,8 +682,8 @@ func (a *csAttempt) shouldRetry(err error) (bool, error) {
 	}
 
 	var code codes.Code
-	if a.s != nil {
+	if a.transportStream != nil {
-		code = a.s.Status().Code()
+		code = a.transportStream.Status().Code()
 	} else {
 		code = status.Code(err)
 	}
@@ -756,8 +756,8 @@ func (cs *clientStream) Context() context.Context {
 	cs.commitAttempt()
 	// No need to lock before using attempt, since we know it is committed and
 	// cannot change.
-	if cs.attempt.s != nil {
+	if cs.attempt.transportStream != nil {
-		return cs.attempt.s.Context()
+		return cs.attempt.transportStream.Context()
 	}
 	return cs.ctx
 }
@@ -794,9 +794,9 @@ func (cs *clientStream) withRetry(op func(a *csAttempt) error, onSuccess func())
 			continue
 		}
 		if err == io.EOF {
-			<-a.s.Done()
+			<-a.transportStream.Done()
 		}
-		if err == nil || (err == io.EOF && a.s.Status().Code() == codes.OK) {
+		if err == nil || (err == io.EOF && a.transportStream.Status().Code() == codes.OK) {
 			onSuccess()
 			cs.mu.Unlock()
 			return err
@@ -812,7 +812,7 @@ func (cs *clientStream) Header() (metadata.MD, error) {
 	var m metadata.MD
 	err := cs.withRetry(func(a *csAttempt) error {
 		var err error
-		m, err = a.s.Header()
+		m, err = a.transportStream.Header()
 		return toRPCErr(err)
 	}, cs.commitAttemptLocked)
 
@@ -856,10 +856,10 @@ func (cs *clientStream) Trailer() metadata.MD {
 	// directions -- it will prevent races and should not meaningfully impact
 	// performance.
 	cs.commitAttempt()
-	if cs.attempt.s == nil {
+	if cs.attempt.transportStream == nil {
 		return nil
 	}
-	return cs.attempt.s.Trailer()
+	return cs.attempt.transportStream.Trailer()
 }
 
 func (cs *clientStream) replayBufferLocked(attempt *csAttempt) error {
@@ -904,7 +904,7 @@ func (cs *clientStream) SendMsg(m any) (err error) {
 	}
 
 	// load hdr, payload, data
-	hdr, data, payload, pf, err := prepareMsg(m, cs.codec, cs.cp, cs.comp, cs.cc.dopts.copts.BufferPool)
+	hdr, data, payload, pf, err := prepareMsg(m, cs.codec, cs.compressorV0, cs.compressorV1, cs.cc.dopts.copts.BufferPool)
 	if err != nil {
 		return err
 	}
@@ -992,7 +992,7 @@ func (cs *clientStream) CloseSend() error {
 	}
 	cs.sentLast = true
 	op := func(a *csAttempt) error {
-		a.s.Write(nil, nil, &transport.WriteOptions{Last: true})
+		a.transportStream.Write(nil, nil, &transport.WriteOptions{Last: true})
 		// Always return nil; io.EOF is the only error that might make sense
 		// instead, but there is no need to signal the client to call RecvMsg
 		// as the only use left for the stream after CloseSend is to call
@@ -1030,7 +1030,7 @@ func (cs *clientStream) finish(err error) {
 	if cs.attempt != nil {
 		cs.attempt.finish(err)
 		// after functions all rely upon having a stream.
-		if cs.attempt.s != nil {
+		if cs.attempt.transportStream != nil {
 			for _, o := range cs.opts {
 				o.after(cs.callInfo, cs.attempt)
 			}
@@ -1084,7 +1084,7 @@ func (a *csAttempt) sendMsg(m any, hdr []byte, payld mem.BufferSlice, dataLength
 		}
 		a.mu.Unlock()
 	}
-	if err := a.s.Write(hdr, payld, &transport.WriteOptions{Last: !cs.desc.ClientStreams}); err != nil {
+	if err := a.transportStream.Write(hdr, payld, &transport.WriteOptions{Last: !cs.desc.ClientStreams}); err != nil {
 		if !cs.desc.ClientStreams {
 			// For non-client-streaming RPCs, we return nil instead of EOF on error
 			// because the generated code requires it.  finish is not called; RecvMsg()
@@ -1108,25 +1108,25 @@ func (a *csAttempt) recvMsg(m any, payInfo *payloadInfo) (err error) {
 		defer payInfo.free()
 	}
 
-	if !a.decompSet {
+	if !a.decompressorSet {
 		// Block until we receive headers containing received message encoding.
-		if ct := a.s.RecvCompress(); ct != "" && ct != encoding.Identity {
+		if ct := a.transportStream.RecvCompress(); ct != "" && ct != encoding.Identity {
-			if a.dc == nil || a.dc.Type() != ct {
+			if a.decompressorV0 == nil || a.decompressorV0.Type() != ct {
 				// No configured decompressor, or it does not match the incoming
 				// message encoding; attempt to find a registered compressor that does.
-				a.dc = nil
+				a.decompressorV0 = nil
-				a.decomp = encoding.GetCompressor(ct)
+				a.decompressorV1 = encoding.GetCompressor(ct)
 			}
 		} else {
 			// No compression is used; disable our decompressor.
-			a.dc = nil
+			a.decompressorV0 = nil
 		}
 		// Only initialize this state once per stream.
-		a.decompSet = true
+		a.decompressorSet = true
 	}
-	if err := recv(a.p, cs.codec, a.s, a.dc, m, *cs.callInfo.maxReceiveMessageSize, payInfo, a.decomp, false); err != nil {
+	if err := recv(a.parser, cs.codec, a.transportStream, a.decompressorV0, m, *cs.callInfo.maxReceiveMessageSize, payInfo, a.decompressorV1, false); err != nil {
 		if err == io.EOF {
-			if statusErr := a.s.Status().Err(); statusErr != nil {
+			if statusErr := a.transportStream.Status().Err(); statusErr != nil {
 				return statusErr
 			}
 			return io.EOF // indicates successful end of stream.
@@ -1157,8 +1157,8 @@ func (a *csAttempt) recvMsg(m any, payInfo *payloadInfo) (err error) {
 	}
 	// Special handling for non-server-stream rpcs.
 	// This recv expects EOF or errors, so we don't collect inPayload.
-	if err := recv(a.p, cs.codec, a.s, a.dc, m, *cs.callInfo.maxReceiveMessageSize, nil, a.decomp, false); err == io.EOF {
+	if err := recv(a.parser, cs.codec, a.transportStream, a.decompressorV0, m, *cs.callInfo.maxReceiveMessageSize, nil, a.decompressorV1, false); err == io.EOF {
-		return a.s.Status().Err() // non-server streaming Recv returns nil on success
+		return a.transportStream.Status().Err() // non-server streaming Recv returns nil on success
 	} else if err != nil {
 		return toRPCErr(err)
 	}
@@ -1177,20 +1177,20 @@ func (a *csAttempt) finish(err error) {
 		err = nil
 	}
 	var tr metadata.MD
-	if a.s != nil {
+	if a.transportStream != nil {
-		a.s.Close(err)
+		a.transportStream.Close(err)
-		tr = a.s.Trailer()
+		tr = a.transportStream.Trailer()
 	}
 
 	if a.pickResult.Done != nil {
 		br := false
-		if a.s != nil {
+		if a.transportStream != nil {
-			br = a.s.BytesReceived()
+			br = a.transportStream.BytesReceived()
 		}
 		a.pickResult.Done(balancer.DoneInfo{
 			Err:           err,
 			Trailer:       tr,
-			BytesSent:     a.s != nil,
+			BytesSent:     a.transportStream != nil,
 			BytesReceived: br,
 			ServerLoad:    balancerload.Parse(tr),
 		})
@@ -1272,7 +1272,7 @@ func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method strin
 	// if set.
 	var cp Compressor
 	var comp encoding.Compressor
-	if ct := c.compressorType; ct != "" {
+	if ct := c.compressorName; ct != "" {
 		callHdr.SendCompress = ct
 		if ct != encoding.Identity {
 			comp = encoding.GetCompressor(ct)
@@ -1280,9 +1280,9 @@ func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method strin
 				return nil, status.Errorf(codes.Internal, "grpc: Compressor is not installed for requested grpc-encoding %q", ct)
 			}
 		}
-	} else if ac.cc.dopts.cp != nil {
+	} else if ac.cc.dopts.compressorV0 != nil {
-		callHdr.SendCompress = ac.cc.dopts.cp.Type()
+		callHdr.SendCompress = ac.cc.dopts.compressorV0.Type()
-		cp = ac.cc.dopts.cp
+		cp = ac.cc.dopts.compressorV0
 	}
 	if c.creds != nil {
 		callHdr.Creds = c.creds
@@ -1290,26 +1290,26 @@ func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method strin
 
 	// Use a special addrConnStream to avoid retry.
 	as := &addrConnStream{
-		callHdr:  callHdr,
+		callHdr:          callHdr,
-		ac:       ac,
+		ac:               ac,
-		ctx:      ctx,
+		ctx:              ctx,
-		cancel:   cancel,
+		cancel:           cancel,
-		opts:     opts,
+		opts:             opts,
-		callInfo: c,
+		callInfo:         c,
-		desc:     desc,
+		desc:             desc,
-		codec:    c.codec,
+		codec:            c.codec,
-		cp:       cp,
+		sendCompressorV0: cp,
-		comp:     comp,
+		sendCompressorV1: comp,
-		t:        t,
+		transport:        t,
 	}
 
-	s, err := as.t.NewStream(as.ctx, as.callHdr)
+	s, err := as.transport.NewStream(as.ctx, as.callHdr)
 	if err != nil {
 		err = toRPCErr(err)
 		return nil, err
 	}
-	as.s = s
+	as.transportStream = s
-	as.p = &parser{r: s, bufferPool: ac.dopts.copts.BufferPool}
+	as.parser = &parser{r: s, bufferPool: ac.dopts.copts.BufferPool}
 	ac.incrCallsStarted()
 	if desc != unaryStreamDesc {
 		// Listen on stream context to cleanup when the stream context is
@@ -1335,29 +1335,31 @@ func newNonRetryClientStream(ctx context.Context, desc *StreamDesc, method strin
 }
 
 type addrConnStream struct {
-	s         *transport.ClientStream
+	transportStream  *transport.ClientStream
-	ac        *addrConn
+	ac               *addrConn
-	callHdr   *transport.CallHdr
+	callHdr          *transport.CallHdr
-	cancel    context.CancelFunc
+	cancel           context.CancelFunc
-	opts      []CallOption
+	opts             []CallOption
-	callInfo  *callInfo
+	callInfo         *callInfo
-	t         transport.ClientTransport
+	transport        transport.ClientTransport
-	ctx       context.Context
+	ctx              context.Context
-	sentLast  bool
+	sentLast         bool
-	desc      *StreamDesc
+	desc             *StreamDesc
-	codec     baseCodec
+	codec            baseCodec
-	cp        Compressor
+	sendCompressorV0 Compressor
-	comp      encoding.Compressor
+	sendCompressorV1 encoding.Compressor
-	decompSet bool
+	decompressorSet  bool
-	dc        Decompressor
+	decompressorV0   Decompressor
-	decomp    encoding.Compressor
+	decompressorV1   encoding.Compressor
-	p         *parser
+	parser           *parser
-	mu        sync.Mutex
+
-	finished  bool
+	// mu guards finished and is held for the entire finish method.
+	mu       sync.Mutex
+	finished bool
 }
 
 func (as *addrConnStream) Header() (metadata.MD, error) {
-	m, err := as.s.Header()
+	m, err := as.transportStream.Header()
 	if err != nil {
 		as.finish(toRPCErr(err))
 	}
@@ -1365,7 +1367,7 @@ func (as *addrConnStream) Header() (metadata.MD, error) {
 }
 
 func (as *addrConnStream) Trailer() metadata.MD {
-	return as.s.Trailer()
+	return as.transportStream.Trailer()
 }
 
 func (as *addrConnStream) CloseSend() error {
@@ -1375,7 +1377,7 @@ func (as *addrConnStream) CloseSend() error {
 	}
 	as.sentLast = true
 
-	as.s.Write(nil, nil, &transport.WriteOptions{Last: true})
+	as.transportStream.Write(nil, nil, &transport.WriteOptions{Last: true})
 	// Always return nil; io.EOF is the only error that might make sense
 	// instead, but there is no need to signal the client to call RecvMsg
 	// as the only use left for the stream after CloseSend is to call
@@ -1384,7 +1386,7 @@ func (as *addrConnStream) CloseSend() error {
 }
 
 func (as *addrConnStream) Context() context.Context {
-	return as.s.Context()
+	return as.transportStream.Context()
 }
 
 func (as *addrConnStream) SendMsg(m any) (err error) {
@@ -1406,7 +1408,7 @@ func (as *addrConnStream) SendMsg(m any) (err error) {
 	}
 
 	// load hdr, payload, data
-	hdr, data, payload, pf, err := prepareMsg(m, as.codec, as.cp, as.comp, as.ac.dopts.copts.BufferPool)
+	hdr, data, payload, pf, err := prepareMsg(m, as.codec, as.sendCompressorV0, as.sendCompressorV1, as.ac.dopts.copts.BufferPool)
 	if err != nil {
 		return err
 	}
@@ -1425,7 +1427,7 @@ func (as *addrConnStream) SendMsg(m any) (err error) {
 		return status.Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", payload.Len(), *as.callInfo.maxSendMessageSize)
 	}
 
-	if err := as.s.Write(hdr, payload, &transport.WriteOptions{Last: !as.desc.ClientStreams}); err != nil {
+	if err := as.transportStream.Write(hdr, payload, &transport.WriteOptions{Last: !as.desc.ClientStreams}); err != nil {
 		if !as.desc.ClientStreams {
 			// For non-client-streaming RPCs, we return nil instead of EOF on error
 			// because the generated code requires it.  finish is not called; RecvMsg()
@@ -1446,25 +1448,25 @@ func (as *addrConnStream) RecvMsg(m any) (err error) {
 		}
 	}()
 
-	if !as.decompSet {
+	if !as.decompressorSet {
 		// Block until we receive headers containing received message encoding.
-		if ct := as.s.RecvCompress(); ct != "" && ct != encoding.Identity {
+		if ct := as.transportStream.RecvCompress(); ct != "" && ct != encoding.Identity {
-			if as.dc == nil || as.dc.Type() != ct {
+			if as.decompressorV0 == nil || as.decompressorV0.Type() != ct {
 				// No configured decompressor, or it does not match the incoming
 				// message encoding; attempt to find a registered compressor that does.
-				as.dc = nil
+				as.decompressorV0 = nil
-				as.decomp = encoding.GetCompressor(ct)
+				as.decompressorV1 = encoding.GetCompressor(ct)
 			}
 		} else {
 			// No compression is used; disable our decompressor.
-			as.dc = nil
+			as.decompressorV0 = nil
 		}
 		// Only initialize this state once per stream.
-		as.decompSet = true
+		as.decompressorSet = true
 	}
-	if err := recv(as.p, as.codec, as.s, as.dc, m, *as.callInfo.maxReceiveMessageSize, nil, as.decomp, false); err != nil {
+	if err := recv(as.parser, as.codec, as.transportStream, as.decompressorV0, m, *as.callInfo.maxReceiveMessageSize, nil, as.decompressorV1, false); err != nil {
 		if err == io.EOF {
-			if statusErr := as.s.Status().Err(); statusErr != nil {
+			if statusErr := as.transportStream.Status().Err(); statusErr != nil {
 				return statusErr
 			}
 			return io.EOF // indicates successful end of stream.
@@ -1479,8 +1481,8 @@ func (as *addrConnStream) RecvMsg(m any) (err error) {
 
 	// Special handling for non-server-stream rpcs.
 	// This recv expects EOF or errors, so we don't collect inPayload.
-	if err := recv(as.p, as.codec, as.s, as.dc, m, *as.callInfo.maxReceiveMessageSize, nil, as.decomp, false); err == io.EOF {
+	if err := recv(as.parser, as.codec, as.transportStream, as.decompressorV0, m, *as.callInfo.maxReceiveMessageSize, nil, as.decompressorV1, false); err == io.EOF {
-		return as.s.Status().Err() // non-server streaming Recv returns nil on success
+		return as.transportStream.Status().Err() // non-server streaming Recv returns nil on success
 	} else if err != nil {
 		return toRPCErr(err)
 	}
@@ -1498,8 +1500,8 @@ func (as *addrConnStream) finish(err error) {
 		// Ending a stream with EOF indicates a success.
 		err = nil
 	}
-	if as.s != nil {
+	if as.transportStream != nil {
-		as.s.Close(err)
+		as.transportStream.Close(err)
 	}
 
 	if err != nil {
@@ -1570,10 +1572,10 @@ type serverStream struct {
 	p     *parser
 	codec baseCodec
 
-	cp     Compressor
+	compressorV0   Compressor
-	dc     Decompressor
+	compressorV1   encoding.Compressor
-	comp   encoding.Compressor
+	decompressorV0 Decompressor
-	decomp encoding.Compressor
+	decompressorV1 encoding.Compressor
 
 	sendCompressorName string
 
@@ -1669,12 +1671,12 @@ func (ss *serverStream) SendMsg(m any) (err error) {
 	// Server handler could have set new compressor by calling SetSendCompressor.
 	// In case it is set, we need to use it for compressing outbound message.
 	if sendCompressorsName := ss.s.SendCompress(); sendCompressorsName != ss.sendCompressorName {
-		ss.comp = encoding.GetCompressor(sendCompressorsName)
+		ss.compressorV1 = encoding.GetCompressor(sendCompressorsName)
 		ss.sendCompressorName = sendCompressorsName
 	}
 
 	// load hdr, payload, data
-	hdr, data, payload, pf, err := prepareMsg(m, ss.codec, ss.cp, ss.comp, ss.p.bufferPool)
+	hdr, data, payload, pf, err := prepareMsg(m, ss.codec, ss.compressorV0, ss.compressorV1, ss.p.bufferPool)
 	if err != nil {
 		return err
 	}
@@ -1755,7 +1757,7 @@ func (ss *serverStream) RecvMsg(m any) (err error) {
 		payInfo = &payloadInfo{}
 		defer payInfo.free()
 	}
-	if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, payInfo, ss.decomp, true); err != nil {
+	if err := recv(ss.p, ss.codec, ss.s, ss.decompressorV0, m, ss.maxReceiveMessageSize, payInfo, ss.decompressorV1, true); err != nil {
 		if err == io.EOF {
 			if len(ss.binlogs) != 0 {
 				chc := &binarylog.ClientHalfClose{}

vendor/google.golang.org/grpc/version.go

@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.70.0"
+const Version = "1.71.0"

vendor/modules.txt

@@ -291,6 +291,10 @@ go.etcd.io/etcd/client/v3
 go.etcd.io/etcd/client/v3/credentials
 go.etcd.io/etcd/client/v3/internal/endpoint
 go.etcd.io/etcd/client/v3/internal/resolver
+# go.opentelemetry.io/auto/sdk v1.1.0
+## explicit; go 1.22.0
+go.opentelemetry.io/auto/sdk
+go.opentelemetry.io/auto/sdk/internal/telemetry
 # go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.0
 ## explicit; go 1.20
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc
@@ -299,8 +303,8 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc/inte
 ## explicit; go 1.20
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp/internal/semconvutil
-# go.opentelemetry.io/otel v1.32.0
+# go.opentelemetry.io/otel v1.34.0
-## explicit; go 1.22
+## explicit; go 1.22.0
 go.opentelemetry.io/otel
 go.opentelemetry.io/otel/attribute
 go.opentelemetry.io/otel/baggage
@@ -325,20 +329,20 @@ go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/internal
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/internal/envconfig
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/internal/otlpconfig
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc/internal/retry
-# go.opentelemetry.io/otel/metric v1.32.0
+# go.opentelemetry.io/otel/metric v1.34.0
-## explicit; go 1.22
+## explicit; go 1.22.0
 go.opentelemetry.io/otel/metric
 go.opentelemetry.io/otel/metric/embedded
-# go.opentelemetry.io/otel/sdk v1.32.0
+# go.opentelemetry.io/otel/sdk v1.34.0
-## explicit; go 1.22
+## explicit; go 1.22.0
 go.opentelemetry.io/otel/sdk
 go.opentelemetry.io/otel/sdk/instrumentation
 go.opentelemetry.io/otel/sdk/internal/env
 go.opentelemetry.io/otel/sdk/internal/x
 go.opentelemetry.io/otel/sdk/resource
 go.opentelemetry.io/otel/sdk/trace
-# go.opentelemetry.io/otel/trace v1.32.0
+# go.opentelemetry.io/otel/trace v1.34.0
-## explicit; go 1.22
+## explicit; go 1.22.0
 go.opentelemetry.io/otel/trace
 go.opentelemetry.io/otel/trace/embedded
 go.opentelemetry.io/otel/trace/noop
@@ -400,7 +404,7 @@ golang.org/x/net/internal/timeseries
 golang.org/x/net/proxy
 golang.org/x/net/trace
 golang.org/x/net/websocket
-# golang.org/x/oauth2 v0.24.0
+# golang.org/x/oauth2 v0.25.0
 ## explicit; go 1.18
 golang.org/x/oauth2
 golang.org/x/oauth2/internal
@@ -457,23 +461,24 @@ golang.org/x/tools/cover
 golang.org/x/tools/go/ast/inspector
 # google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de
 ## explicit; go 1.19
-# google.golang.org/genproto/googleapis/api v0.0.0-20241202173237-19429a94021a
+# google.golang.org/genproto/googleapis/api v0.0.0-20250106144421-5f5ef82da422
-## explicit; go 1.21
+## explicit; go 1.22
 google.golang.org/genproto/googleapis/api
 google.golang.org/genproto/googleapis/api/annotations
 google.golang.org/genproto/googleapis/api/expr/v1alpha1
 google.golang.org/genproto/googleapis/api/httpbody
-# google.golang.org/genproto/googleapis/rpc v0.0.0-20241202173237-19429a94021a
+# google.golang.org/genproto/googleapis/rpc v0.0.0-20250115164207-1a7da9e5054f
-## explicit; go 1.21
+## explicit; go 1.22
 google.golang.org/genproto/googleapis/rpc/errdetails
 google.golang.org/genproto/googleapis/rpc/status
-# google.golang.org/grpc v1.70.0
+# google.golang.org/grpc v1.71.0
-## explicit; go 1.22
+## explicit; go 1.22.0
 google.golang.org/grpc
 google.golang.org/grpc/attributes
 google.golang.org/grpc/backoff
 google.golang.org/grpc/balancer
 google.golang.org/grpc/balancer/base
+google.golang.org/grpc/balancer/endpointsharding
 google.golang.org/grpc/balancer/grpclb/state
 google.golang.org/grpc/balancer/pickfirst
 google.golang.org/grpc/balancer/pickfirst/internal
@@ -507,7 +512,9 @@ google.golang.org/grpc/internal/grpcutil
 google.golang.org/grpc/internal/idle
 google.golang.org/grpc/internal/metadata
 google.golang.org/grpc/internal/pretty
+google.golang.org/grpc/internal/proxyattributes
 google.golang.org/grpc/internal/resolver
+google.golang.org/grpc/internal/resolver/delegatingresolver
 google.golang.org/grpc/internal/resolver/dns
 google.golang.org/grpc/internal/resolver/dns/internal
 google.golang.org/grpc/internal/resolver/passthrough