chore(deps): bump google.golang.org/grpc from 1.68.1 to 1.69.0

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.68.1 to 1.69.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.68.1...v1.69.0)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

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 v0.32.0
-	google.golang.org/grpc v1.68.1
+	google.golang.org/grpc v1.69.0
 	google.golang.org/protobuf v1.35.2
 	k8s.io/api v0.28.12
 	k8s.io/apimachinery v0.28.12
@@ -84,12 +84,12 @@ 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 v1.20.0 // indirect
+	go.opentelemetry.io/otel v1.31.0 // 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 v1.20.0 // indirect
+	go.opentelemetry.io/otel/metric v1.31.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.20.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.31.0 // indirect
-	go.opentelemetry.io/otel/trace v1.20.0 // indirect
+	go.opentelemetry.io/otel/trace v1.31.0 // 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
@@ -104,8 +104,8 @@ require (
 	golang.org/x/time v0.3.0 // indirect
 	golang.org/x/tools v0.26.0 // indirect
 	google.golang.org/genproto v0.0.0-20240227224415-6ceb2ff114de // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20240903143218-8af14fe29dc1 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20241015192408-796eee8c2d53 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53 // 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 v0.5.0 h1:Zr0eK8JbFv6+Wi4ilXAR8FJ3wyNdpxHKJNPos6LTZOY=
+cloud.google.com/go/compute/metadata v0.5.2 h1:UxK4uu/Tn+I3p2dYWTfiX4wva7aYlKixAHn3fyqngqo=
-cloud.google.com/go/compute/metadata v0.5.0/go.mod h1:aHnloV2TPI38yx4s9+wAZhHykWvVCfu7hQbF+9CWoiY=
+cloud.google.com/go/compute/metadata v0.5.2/go.mod h1:C66sj2AluDcIqakBq/M8lw8/ybHgOZqin2obFxa/E5k=
 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=
@@ -390,18 +390,20 @@ go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.4
 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 v1.20.0 h1:vsb/ggIY+hUjD/zCAQHpzTmndPqv/ml2ArbsbfBYTAc=
+go.opentelemetry.io/otel v1.31.0 h1:NsJcKPIW0D0H3NgzPDHmo0WW6SptzPdqg/L1zsIm2hY=
-go.opentelemetry.io/otel v1.20.0/go.mod h1:oUIGj3D77RwJdM6PPZImDpSZGDvkD9fhesHny69JFrs=
+go.opentelemetry.io/otel v1.31.0/go.mod h1:O0C14Yl9FgkjqcCZAsE053C13OaddMYr/hz6clDkEJE=
 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 v1.20.0 h1:ZlrO8Hu9+GAhnepmRGhSU7/VkpjrNowxRN9GyKR4wzA=
+go.opentelemetry.io/otel/metric v1.31.0 h1:FSErL0ATQAmYHUIzSezZibnyVlft1ybhy4ozRPcF2fE=
-go.opentelemetry.io/otel/metric v1.20.0/go.mod h1:90DRw3nfK4D7Sm/75yQ00gTJxtkBxX+wu6YaNymbpVM=
+go.opentelemetry.io/otel/metric v1.31.0/go.mod h1:C3dEloVbLuYoX41KpmAhOqNriGbA+qqH6PQ5E5mUfnY=
-go.opentelemetry.io/otel/sdk v1.20.0 h1:5Jf6imeFZlZtKv9Qbo6qt2ZkmWtdWx/wzcCbNUlAWGM=
+go.opentelemetry.io/otel/sdk v1.31.0 h1:xLY3abVHYZ5HSfOg3l2E5LUj2Cwva5Y7yGxnSW9H5Gk=
-go.opentelemetry.io/otel/sdk v1.20.0/go.mod h1:rmkSx1cZCm/tn16iWDn1GQbLtsW/LvsdEEFzCSRM6V0=
+go.opentelemetry.io/otel/sdk v1.31.0/go.mod h1:TfRbMdhvxIIr/B2N2LQW2S5v9m3gOQ/08KsbbO5BPT0=
-go.opentelemetry.io/otel/trace v1.20.0 h1:+yxVAPZPbQhbC3OfAkeIVTky6iTFpcr4SiY9om7mXSQ=
+go.opentelemetry.io/otel/sdk/metric v1.31.0 h1:i9hxxLJF/9kkvfHppyLL55aW7iIJz4JjxTeYusH7zMc=
-go.opentelemetry.io/otel/trace v1.20.0/go.mod h1:HJSK7F/hA5RlzpZ0zKDCHCDHm556LCDtKaAo6JmBFUU=
+go.opentelemetry.io/otel/sdk/metric v1.31.0/go.mod h1:CRInTMVvNhUKgSAMbKyTMxqOBC0zgyxzW55lZzX43Y8=
+go.opentelemetry.io/otel/trace v1.31.0 h1:ffjsj1aRouKewfr85U2aGagJ46+MvodynlQ1HYdmJys=
+go.opentelemetry.io/otel/trace v1.31.0/go.mod h1:TXZkRk7SM2ZQLtR6eoAWQFIHPvzQ06FJAsO1tJg480A=
 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=
@@ -576,10 +578,10 @@ 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 v0.0.0-20240903143218-8af14fe29dc1 h1:hjSy6tcFQZ171igDaN5QHOw2n6vx40juYbC/x67CEhc=
+google.golang.org/genproto/googleapis/api v0.0.0-20241015192408-796eee8c2d53 h1:fVoAXEKA4+yufmbdVYv+SE73+cPZbbbe8paLsHfkK+U=
-google.golang.org/genproto/googleapis/api v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:qpvKtACPCQhAdu3PyQgV4l3LMXZEtft7y8QcarRsp9I=
+google.golang.org/genproto/googleapis/api v0.0.0-20241015192408-796eee8c2d53/go.mod h1:riSXTwQ4+nqmPGtobMFyW5FqVAmIs0St6VPp4Ug7CE4=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:pPJltXNxVzT4pK9yD8vR9X75DaWYYmLGMsEvBfFQZzQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53 h1:X58yt85/IXCx0Y3ZwN6sEIKZzQtDEYaBWrDvErdXrRE=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20241015192408-796eee8c2d53/go.mod h1:GX3210XPVPUjJbTUbvwI8f2IpZDMZuPJWDzDuebbviI=
 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=
@@ -588,8 +590,8 @@ 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 v1.68.1 h1:oI5oTa11+ng8r8XMMN7jAOmWfPZWbYpCFaMUTACxkM0=
+google.golang.org/grpc v1.69.0 h1:quSiOM1GJPmPH5XtU+BCoVXcDVJJAzNcoyfC2cCjGkI=
-google.golang.org/grpc v1.68.1/go.mod h1:+q1XYFJjShcqn0QZHvCyeR4CXPA+llXIeUIfIe00waw=
+google.golang.org/grpc v1.69.0/go.mod h1:vyjdE6jLBI76dgpDojsFGNaHlxdjXN9ghpnd2o7JGZ4=
 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/otel/.codespellignore

@@ -3,3 +3,7 @@ fo
 te
 collison
 consequentially
+ans
+nam
+valu
+thirdparty

vendor/go.opentelemetry.io/otel/.codespellrc

@@ -5,6 +5,6 @@ check-filenames =
 check-hidden =
 ignore-words = .codespellignore
 interactive = 1
-skip = .git,go.mod,go.sum,semconv,venv,.tools
+skip = .git,go.mod,go.sum,go.work,go.work.sum,semconv,venv,.tools
 uri-ignore-words-list = *
 write =

vendor/go.opentelemetry.io/otel/.gitignore

@@ -14,13 +14,9 @@ go.work.sum
 gen/
 
 /example/dice/dice
-/example/fib/fib
-/example/fib/traces.txt
-/example/jaeger/jaeger
 /example/namedtracer/namedtracer
 /example/otel-collector/otel-collector
 /example/opencensus/opencensus
 /example/passthrough/passthrough
 /example/prometheus/prometheus
-/example/view/view
 /example/zipkin/zipkin

vendor/go.opentelemetry.io/otel/.gitmodules

@@ -1,3 +0,0 @@
-[submodule "opentelemetry-proto"]
-	path = exporters/otlp/internal/opentelemetry-proto
-	url = https://github.com/open-telemetry/opentelemetry-proto

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

@@ -9,8 +9,11 @@ linters:
   disable-all: true
   # Specifically enable linters we want to use.
   enable:
+    - asasalint
+    - bodyclose
     - depguard
     - errcheck
+    - errorlint
     - godot
     - gofumpt
     - goimports
@@ -21,8 +24,12 @@ linters:
     - misspell
     - revive
     - staticcheck
+    - tenv
+    - testifylint
     - typecheck
+    - unconvert
     - unused
+    - unparam
 
 issues:
   # Maximum issues count per one linter.
@@ -58,12 +65,12 @@ issues:
     - path: _test\.go
       linters:
         - gosec
-    # Igonoring gosec G404: Use of weak random number generator (math/rand instead of crypto/rand)
+    # 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:"
       linters:
         - gosec
-    # Igonoring gosec G402: TLS MinVersion too low
+    # Ignoring gosec G402: TLS MinVersion too low
     # as the https://pkg.go.dev/crypto/tls#Config handles MinVersion default well.
     - text: "G402: TLS MinVersion too low."
       linters:
@@ -124,6 +131,8 @@ linters-settings:
           - "**/example/**/*.go"
           - "**/trace/*.go"
           - "**/trace/**/*.go"
+          - "**/log/*.go"
+          - "**/log/**/*.go"
         deny:
           - pkg: "go.opentelemetry.io/otel/internal$"
             desc: Do not use cross-module internal packages.
@@ -294,3 +303,9 @@ linters-settings:
       # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#waitgroup-by-value
       - name: waitgroup-by-value
         disabled: false
+  testifylint:
+    enable-all: true
+    disable:
+      - float-compare
+      - go-require
+      - require-error

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

@@ -8,9 +8,398 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+<!-- Released section -->
+<!-- Don't change this section unless doing release -->
+
+## [1.31.0/0.53.0/0.7.0/0.0.10] 2024-10-11
+
+### Added
+
+- Add `go.opentelemetry.io/otel/sdk/metric/exemplar` package which includes `Exemplar`, `Filter`, `TraceBasedFilter`, `AlwaysOnFilter`, `HistogramReservoir`, `FixedSizeReservoir`, `Reservoir`, `Value` and `ValueType` types. These will be used for configuring the exemplar reservoir for the metrics sdk. (#5747, #5862)
+- Add `WithExportBufferSize` option to log batch processor.(#5877)
+
+### Changed
+
+- Enable exemplars by default in `go.opentelemetry.io/otel/sdk/metric`. Exemplars can be disabled by setting `OTEL_METRICS_EXEMPLAR_FILTER=always_off` (#5778)
+- `Logger.Enabled` in `go.opentelemetry.io/otel/log` now accepts a newly introduced `EnabledParameters` type instead of `Record`. (#5791)
+- `FilterProcessor.Enabled` in `go.opentelemetry.io/otel/sdk/log/internal/x` now accepts `EnabledParameters` instead of `Record`. (#5791)
+- The `Record` type in `go.opentelemetry.io/otel/log` is no longer comparable. (#5847)
+- Performance improvements for the trace SDK `SetAttributes` method in `Span`. (#5864)
+- Reduce memory allocations for the `Event` and `Link` lists in `Span`. (#5858)
+- Performance improvements for the trace SDK `AddEvent`, `AddLink`, `RecordError` and `End` methods in `Span`. (#5874)
+
+### Deprecated
+
+- Deprecate all examples under `go.opentelemetry.io/otel/example` as they are moved to [Contrib repository](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/examples). (#5854)
+
+### Fixed
+
+- The race condition for multiple `FixedSize` exemplar reservoirs identified in #5814 is resolved. (#5819)
+- Fix log records duplication in case of heterogeneous resource attributes by correctly mapping each log record to it's resource and scope. (#5803)
+- Fix timer channel drain to avoid hanging on Go 1.23. (#5868)
+- Fix delegation for global meter providers, and panic when calling otel.SetMeterProvider. (#5827)
+- Change the `reflect.TypeOf` to use a nil pointer to not allocate on the heap unless necessary. (#5827)
+
+## [1.30.0/0.52.0/0.6.0/0.0.9] 2024-09-09
+
+### Added
+
+- Support `OTEL_EXPORTER_OTLP_LOGS_INSECURE` and `OTEL_EXPORTER_OTLP_INSECURE` environments in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`. (#5739)
+- The `WithResource` option for `NewMeterProvider` now merges the provided resources with the ones from environment variables. (#5773)
+- The `WithResource` option for `NewLoggerProvider` now merges the provided resources with the ones from environment variables. (#5773)
+- Add UTF-8 support to `go.opentelemetry.io/otel/exporters/prometheus`. (#5755)
+
+### Fixed
+
+- Fix memory leak in the global `MeterProvider` when identical instruments are repeatedly created. (#5754)
+- Fix panic on instruments creation when setting meter provider. (#5758)
+- Fix an issue where `SetMeterProvider` in `go.opentelemetry.io/otel` might miss the delegation for instruments and registries. (#5780)
+
+### Removed
+
+- Drop support for [Go 1.21]. (#5736, #5740, #5800)
+
+## [1.29.0/0.51.0/0.5.0] 2024-08-23
+
+This release is the last to support [Go 1.21].
+The next release will require at least [Go 1.22].
+
+### Added
+
+- Add MacOS ARM64 platform to the compatibility testing suite. (#5577)
+- Add `InstrumentationScope` field to `SpanStub` in `go.opentelemetry.io/otel/sdk/trace/tracetest`, as a replacement for the deprecated `InstrumentationLibrary`. (#5627)
+- Make the initial release of `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc`.
+  This new module contains an OTLP exporter that transmits log telemetry using gRPC.
+  This module is unstable and breaking changes may be introduced.
+  See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5629)
+- Add `Walk` function to `TraceState` in `go.opentelemetry.io/otel/trace` to iterate all the key-value pairs. (#5651)
+- Bridge the trace state in `go.opentelemetry.io/otel/bridge/opencensus`. (#5651)
+- Zero value of `SimpleProcessor` in `go.opentelemetry.io/otel/sdk/log` no longer panics. (#5665)
+- The `FilterProcessor` interface type is added in `go.opentelemetry.io/otel/sdk/log/internal/x`.
+  This is an optional and experimental interface that log `Processor`s can implement to instruct the `Logger` if a `Record` will be processed or not.
+  It replaces the existing `Enabled` method that is removed from the `Processor` interface itself.
+  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. (#5692)
+- Support [Go 1.23]. (#5720)
+
+### Changed
+
+- `NewMemberRaw`, `NewKeyProperty` and `NewKeyValuePropertyRaw` in `go.opentelemetry.io/otel/baggage` allow UTF-8 string in key. (#5132)
+- `Processor.OnEmit` in `go.opentelemetry.io/otel/sdk/log` now accepts a pointer to `Record` instead of a value so that the record modifications done in a processor are propagated to subsequent registered processors. (#5636)
+- `SimpleProcessor.Enabled` in `go.opentelemetry.io/otel/sdk/log` now returns `false` if the exporter is `nil`. (#5665)
+- Update the concurrency requirements of `Exporter` in `go.opentelemetry.io/otel/sdk/log`. (#5666)
+- `SimpleProcessor` in `go.opentelemetry.io/otel/sdk/log` synchronizes `OnEmit` calls. (#5666)
+- The `Processor` interface in `go.opentelemetry.io/otel/sdk/log` no longer includes the `Enabled` method.
+  See the `FilterProcessor` interface type added in `go.opentelemetry.io/otel/sdk/log/internal/x` to continue providing this functionality. (#5692)
+- The `SimpleProcessor` type in `go.opentelemetry.io/otel/sdk/log` is no longer comparable. (#5693)
+- The `BatchProcessor` type in `go.opentelemetry.io/otel/sdk/log` is no longer comparable. (#5693)
+
+### Fixed
+
+- Correct comments for the priority of the `WithEndpoint` and `WithEndpointURL` options and their corresponding environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#5584)
+- Pass the underlying error rather than a generic retry-able failure in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`, `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp` and `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#5541)
+- Correct the `Tracer`, `Meter`, and `Logger` names used in `go.opentelemetry.io/otel/example/dice`. (#5612)
+- Correct the `Tracer` names used in `go.opentelemetry.io/otel/example/namedtracer`. (#5612)
+- Correct the `Tracer` name used in `go.opentelemetry.io/otel/example/opencensus`. (#5612)
+- Correct the `Tracer` and `Meter` names used in `go.opentelemetry.io/otel/example/otel-collector`. (#5612)
+- Correct the `Tracer` names used in `go.opentelemetry.io/otel/example/passthrough`. (#5612)
+- Correct the `Meter` name used in `go.opentelemetry.io/otel/example/prometheus`. (#5612)
+- Correct the `Tracer` names used in `go.opentelemetry.io/otel/example/zipkin`. (#5612)
+- Correct comments for the priority of the `WithEndpoint` and `WithEndpointURL` options and their corresponding environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` and `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#5641)
+- Correct comments for the priority of the `WithEndpoint` and `WithEndpointURL` options and their corresponding environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#5650)
+- Stop percent encoding header environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`, `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`, `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` and `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` (#5705)
+- Remove invalid environment variable header keys in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`, `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`, `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` and `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` (#5705)
+
+### Removed
+
+- The `Enabled` method of the `SimpleProcessor` in `go.opentelemetry.io/otel/sdk/log` is removed. (#5692)
+- The `Enabled` method of the `BatchProcessor` in `go.opentelemetry.io/otel/sdk/log` is removed. (#5692)
+
+## [1.28.0/0.50.0/0.4.0] 2024-07-02
+
+### Added
+
+- The `IsEmpty` method is added to the `Instrument` type in `go.opentelemetry.io/otel/sdk/metric`.
+  This method is used to check if an `Instrument` instance is a zero-value. (#5431)
+- Store and provide the emitted `context.Context` in `ScopeRecords` of `go.opentelemetry.io/otel/sdk/log/logtest`. (#5468)
+- The `go.opentelemetry.io/otel/semconv/v1.26.0` package.
+  The package contains semantic conventions from the `v1.26.0` version of the OpenTelemetry Semantic Conventions. (#5476)
+- The `AssertRecordEqual` method to `go.opentelemetry.io/otel/log/logtest` to allow comparison of two log records in tests. (#5499)
+- The `WithHeaders` option to `go.opentelemetry.io/otel/exporters/zipkin` to allow configuring custom http headers while exporting spans. (#5530)
+
+### Changed
+
+- `Tracer.Start` in `go.opentelemetry.io/otel/trace/noop` no longer allocates a span for empty span context. (#5457)
+- Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/example/otel-collector`. (#5490)
+- Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/example/zipkin`. (#5490)
+- Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/exporters/zipkin`. (#5490)
+  - The exporter no longer exports the deprecated "otel.library.name" or "otel.library.version" attributes.
+- Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/sdk/resource`. (#5490)
+- Upgrade `go.opentelemetry.io/otel/semconv/v1.25.0` to `go.opentelemetry.io/otel/semconv/v1.26.0` in `go.opentelemetry.io/otel/sdk/trace`. (#5490)
+- `SimpleProcessor.OnEmit` in `go.opentelemetry.io/otel/sdk/log` no longer allocates a slice which makes it possible to have a zero-allocation log processing using `SimpleProcessor`. (#5493)
+- Use non-generic functions in the `Start` method of `"go.opentelemetry.io/otel/sdk/trace".Trace` to reduce memory allocation. (#5497)
+- `service.instance.id` is populated for a `Resource` created with `"go.opentelemetry.io/otel/sdk/resource".Default` with a default value when `OTEL_GO_X_RESOURCE` is set. (#5520)
+- Improve performance of metric instruments in `go.opentelemetry.io/otel/sdk/metric` by removing unnecessary calls to `time.Now`. (#5545)
+
+### Fixed
+
+- Log a warning to the OpenTelemetry internal logger when a `Record` in `go.opentelemetry.io/otel/sdk/log` drops an attribute due to a limit being reached. (#5376)
+- Identify the `Tracer` returned from the global `TracerProvider` in `go.opentelemetry.io/otel/global` with its schema URL. (#5426)
+- Identify the `Meter` returned from the global `MeterProvider` in `go.opentelemetry.io/otel/global` with its schema URL. (#5426)
+- Log a warning to the OpenTelemetry internal logger when a `Span` in `go.opentelemetry.io/otel/sdk/trace` drops an attribute, event, or link due to a limit being reached. (#5434)
+- Document instrument name requirements in `go.opentelemetry.io/otel/metric`. (#5435)
+- Prevent random number generation data-race for experimental rand exemplars in `go.opentelemetry.io/otel/sdk/metric`. (#5456)
+- Fix counting number of dropped attributes of `Record` in `go.opentelemetry.io/otel/sdk/log`. (#5464)
+- Fix panic in baggage creation when a member contains `0x80` char in key or value. (#5494)
+- Correct comments for the priority of the `WithEndpoint` and `WithEndpointURL` options and their corresponding environment variables in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc`. (#5508)
+- Retry trace and span ID generation if it generated an invalid one in `go.opentelemetry.io/otel/sdk/trace`. (#5514)
+- Fix stale timestamps reported by the last-value aggregation. (#5517)
+- Indicate the `Exporter` in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp` must be created by the `New` method. (#5521)
+- Improved performance in all `{Bool,Int64,Float64,String}SliceValue` functions of `go.opentelemetry.io/attributes` by reducing the number of allocations. (#5549)
+- Replace invalid percent-encoded octet sequences with replacement char in `go.opentelemetry.io/otel/baggage`. (#5528)
+
+## [1.27.0/0.49.0/0.3.0] 2024-05-21
+
+### Added
+
+- Add example for `go.opentelemetry.io/otel/exporters/stdout/stdoutlog`. (#5242)
+- Add `RecordFactory` in `go.opentelemetry.io/otel/sdk/log/logtest` to facilitate testing exporter and processor implementations. (#5258)
+- Add `RecordFactory` in `go.opentelemetry.io/otel/log/logtest` to facilitate testing bridge implementations. (#5263)
+- The count of dropped records from the `BatchProcessor` in `go.opentelemetry.io/otel/sdk/log` is logged. (#5276)
+- Add metrics in the `otel-collector` example. (#5283)
+- Add the synchronous gauge instrument to `go.opentelemetry.io/otel/metric`. (#5304)
+  - An `int64` or `float64` synchronous gauge instrument can now be created from a `Meter`.
+  - All implementations of the API (`go.opentelemetry.io/otel/metric/noop`, `go.opentelemetry.io/otel/sdk/metric`) are updated to support this instrument.
+- Add logs to `go.opentelemetry.io/otel/example/dice`. (#5349)
+
+### Changed
+
+- The `Shutdown` method of `Exporter` in `go.opentelemetry.io/otel/exporters/stdout/stdouttrace` ignores the context cancellation and always returns `nil`. (#5189)
+- The `ForceFlush` and `Shutdown` methods of the exporter returned by `New` in `go.opentelemetry.io/otel/exporters/stdout/stdoutmetric` ignore the context cancellation and always return `nil`. (#5189)
+- Apply the value length limits to `Record` attributes in `go.opentelemetry.io/otel/sdk/log`. (#5230)
+- De-duplicate map attributes added to a `Record` in `go.opentelemetry.io/otel/sdk/log`. (#5230)
+- `go.opentelemetry.io/otel/exporters/stdout/stdoutlog` won't print timestamps when `WithoutTimestamps` option is set. (#5241)
+- The `go.opentelemetry.io/otel/exporters/stdout/stdoutlog` exporter won't print `AttributeValueLengthLimit` and `AttributeCountLimit` fields now, instead it prints the `DroppedAttributes` field. (#5272)
+- Improved performance in the `Stringer` implementation of `go.opentelemetry.io/otel/baggage.Member` by reducing the number of allocations. (#5286)
+- Set the start time for last-value aggregates in `go.opentelemetry.io/otel/sdk/metric`. (#5305)
+- The `Span` in `go.opentelemetry.io/otel/sdk/trace` will record links without span context if either non-empty `TraceState` or attributes are provided. (#5315)
+- Upgrade all dependencies of `go.opentelemetry.io/otel/semconv/v1.24.0` to `go.opentelemetry.io/otel/semconv/v1.25.0`. (#5374)
+
+### Fixed
+
+- Comparison of unordered maps for `go.opentelemetry.io/otel/log.KeyValue` and `go.opentelemetry.io/otel/log.Value`. (#5306)
+- Fix the empty output of `go.opentelemetry.io/otel/log.Value` in `go.opentelemetry.io/otel/exporters/stdout/stdoutlog`. (#5311)
+- Split the behavior of `Recorder` in `go.opentelemetry.io/otel/log/logtest` so it behaves as a `LoggerProvider` only. (#5365)
+- Fix wrong package name of the error message when parsing endpoint URL in `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`. (#5371)
+- Identify the `Logger` returned from the global `LoggerProvider` in `go.opentelemetry.io/otel/log/global` with its schema URL. (#5375)
+
+## [1.26.0/0.48.0/0.2.0-alpha] 2024-04-24
+
+### Added
+
+- Add `Recorder` in `go.opentelemetry.io/otel/log/logtest` to facilitate testing the log bridge implementations. (#5134)
+- Add span flags to OTLP spans and links exported by `go.opentelemetry.io/otel/exporters/otlp/otlptrace`. (#5194)
+- Make the initial alpha release of `go.opentelemetry.io/otel/sdk/log`.
+  This new module contains the Go implementation of the OpenTelemetry Logs SDK.
+  This module is unstable and breaking changes may be introduced.
+  See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5240)
+- Make the initial alpha release of `go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp`.
+  This new module contains an OTLP exporter that transmits log telemetry using HTTP.
+  This module is unstable and breaking changes may be introduced.
+  See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5240)
+- Make the initial alpha release of `go.opentelemetry.io/otel/exporters/stdout/stdoutlog`.
+  This new module contains an exporter prints log records to STDOUT.
+  This module is unstable and breaking changes may be introduced.
+  See our [versioning policy](VERSIONING.md) for more information about these stability guarantees. (#5240)
+- The `go.opentelemetry.io/otel/semconv/v1.25.0` package.
+  The package contains semantic conventions from the `v1.25.0` version of the OpenTelemetry Semantic Conventions. (#5254)
+
+### Changed
+
+- Update `go.opentelemetry.io/proto/otlp` from v1.1.0 to v1.2.0. (#5177)
+- Improve performance of baggage member character validation in `go.opentelemetry.io/otel/baggage`. (#5214)
+- The `otel-collector` example now uses docker compose to bring up services instead of kubernetes. (#5244)
+
+### Fixed
+
+- Slice attribute values in `go.opentelemetry.io/otel/attribute` are now emitted as their JSON representation. (#5159)
+
+## [1.25.0/0.47.0/0.0.8/0.1.0-alpha] 2024-04-05
+
+### Added
+
+- Add `WithProxy` option in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#4906)
+- Add `WithProxy` option in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlptracehttp`. (#4906)
+- Add `AddLink` method to the `Span` interface in `go.opentelemetry.io/otel/trace`. (#5032)
+- The `Enabled` method is added to the `Logger` interface in `go.opentelemetry.io/otel/log`.
+  This method is used to notify users if a log record will be emitted or not. (#5071)
+- Add `SeverityUndefined` `const` to `go.opentelemetry.io/otel/log`.
+  This value represents an unset severity level. (#5072)
+- Add `Empty` function in `go.opentelemetry.io/otel/log` to return a `KeyValue` for an empty value. (#5076)
+- Add `go.opentelemetry.io/otel/log/global` to manage the global `LoggerProvider`.
+  This package is provided with the anticipation that all functionality will be migrate to `go.opentelemetry.io/otel` when `go.opentelemetry.io/otel/log` stabilizes.
+  At which point, users will be required to migrage their code, and this package will be deprecated then removed. (#5085)
+- Add support for `Summary` metrics in the `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` and `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` exporters. (#5100)
+- Add `otel.scope.name` and `otel.scope.version` tags to spans exported by `go.opentelemetry.io/otel/exporters/zipkin`. (#5108)
+- Add support for `AddLink` to `go.opentelemetry.io/otel/bridge/opencensus`. (#5116)
+- Add `String` method to `Value` and `KeyValue` in `go.opentelemetry.io/otel/log`. (#5117)
+- Add Exemplar support to `go.opentelemetry.io/otel/exporters/prometheus`. (#5111)
+- Add metric semantic conventions to `go.opentelemetry.io/otel/semconv/v1.24.0`. Future `semconv` packages will include metric semantic conventions as well. (#4528)
+
+### Changed
+
+- `SpanFromContext` and `SpanContextFromContext` in `go.opentelemetry.io/otel/trace` no longer make a heap allocation when the passed context has no span. (#5049)
+- `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc` and `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` now create a gRPC client in idle mode and with "dns" as the default resolver using [`grpc.NewClient`](https://pkg.go.dev/google.golang.org/grpc#NewClient). (#5151)
+  Because of that `WithDialOption` ignores [`grpc.WithBlock`](https://pkg.go.dev/google.golang.org/grpc#WithBlock), [`grpc.WithTimeout`](https://pkg.go.dev/google.golang.org/grpc#WithTimeout), and [`grpc.WithReturnConnectionError`](https://pkg.go.dev/google.golang.org/grpc#WithReturnConnectionError).
+  Notice that [`grpc.DialContext`](https://pkg.go.dev/google.golang.org/grpc#DialContext) which was used before is now deprecated.
+
+### Fixed
+
+- Clarify the documentation about equivalence guarantees for the `Set` and `Distinct` types in `go.opentelemetry.io/otel/attribute`. (#5027)
+- Prevent default `ErrorHandler` self-delegation. (#5137)
+- Update all dependencies to address [GO-2024-2687]. (#5139)
+
+### Removed
+
+- Drop support for [Go 1.20]. (#4967)
+
+### Deprecated
+
+- Deprecate `go.opentelemetry.io/otel/attribute.Sortable` type. (#4734)
+- Deprecate `go.opentelemetry.io/otel/attribute.NewSetWithSortable` function. (#4734)
+- Deprecate `go.opentelemetry.io/otel/attribute.NewSetWithSortableFiltered` function. (#4734)
+
+## [1.24.0/0.46.0/0.0.1-alpha] 2024-02-23
+
+This release is the last to support [Go 1.20].
+The next release will require at least [Go 1.21].
+
+### Added
+
+- Support [Go 1.22]. (#4890)
+- Add exemplar support to `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`. (#4900)
+- Add exemplar support to `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#4900)
+- The `go.opentelemetry.io/otel/log` module is added.
+  This module includes OpenTelemetry Go's implementation of the Logs Bridge API.
+  This module is in an alpha state, it is subject to breaking changes.
+  See our [versioning policy](./VERSIONING.md) for more info. (#4961)
+- Add ARM64 platform to the compatibility testing suite. (#4994)
+
+### Fixed
+
+- Fix registration of multiple callbacks when using the global meter provider from `go.opentelemetry.io/otel`. (#4945)
+- Fix negative buckets in output of exponential histograms. (#4956)
+
+## [1.23.1] 2024-02-07
+
+### Fixed
+
+- Register all callbacks passed during observable instrument creation instead of just the last one multiple times in `go.opentelemetry.io/otel/sdk/metric`. (#4888)
+
+## [1.23.0] 2024-02-06
+
+This release contains the first stable, `v1`, release of the following modules:
+
+- `go.opentelemetry.io/otel/bridge/opencensus`
+- `go.opentelemetry.io/otel/bridge/opencensus/test`
+- `go.opentelemetry.io/otel/example/opencensus`
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`
+- `go.opentelemetry.io/otel/exporters/stdout/stdoutmetric`
+
+See our [versioning policy](VERSIONING.md) for more information about these stability guarantees.
+
+### Added
+
+- Add `WithEndpointURL` option to the `exporters/otlp/otlpmetric/otlpmetricgrpc`, `exporters/otlp/otlpmetric/otlpmetrichttp`, `exporters/otlp/otlptrace/otlptracegrpc` and `exporters/otlp/otlptrace/otlptracehttp` packages. (#4808)
+- Experimental exemplar exporting is added to the metric SDK.
+  See [metric documentation](./sdk/metric/internal/x/README.md#exemplars) for more information about this feature and how to enable it. (#4871)
+- `ErrSchemaURLConflict` is added to `go.opentelemetry.io/otel/sdk/resource`.
+  This error is returned when a merge of two `Resource`s with different (non-empty) schema URL is attempted. (#4876)
+
+### Changed
+
+- The `Merge` and `New` functions in `go.opentelemetry.io/otel/sdk/resource` now returns a partial result if there is a schema URL merge conflict.
+  Instead of returning `nil` when two `Resource`s with different (non-empty) schema URLs are merged the merged `Resource`, along with the new `ErrSchemaURLConflict` error, is returned.
+  It is up to the user to decide if they want to use the returned `Resource` or not.
+  It may have desired attributes overwritten or include stale semantic conventions. (#4876)
+
+### Fixed
+
+- Fix `ContainerID` resource detection on systemd when cgroup path has a colon. (#4449)
+- Fix `go.opentelemetry.io/otel/sdk/metric` to cache instruments to avoid leaking memory when the same instrument is created multiple times. (#4820)
+- Fix missing `Mix` and `Max` values for `go.opentelemetry.io/otel/exporters/stdout/stdoutmetric` by introducing `MarshalText` and `MarshalJSON` for the `Extrema` type in `go.opentelemetry.io/sdk/metric/metricdata`. (#4827)
+
+## [1.23.0-rc.1] 2024-01-18
+
+This is a release candidate for the v1.23.0 release.
+That release is expected to include the `v1` release of the following modules:
+
+- `go.opentelemetry.io/otel/bridge/opencensus`
+- `go.opentelemetry.io/otel/bridge/opencensus/test`
+- `go.opentelemetry.io/otel/example/opencensus`
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc`
+- `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`
+- `go.opentelemetry.io/otel/exporters/stdout/stdoutmetric`
+
+See our [versioning policy](VERSIONING.md) for more information about these stability guarantees.
+
+## [1.22.0/0.45.0] 2024-01-17
+
+### Added
+
+- The `go.opentelemetry.io/otel/semconv/v1.22.0` package.
+  The package contains semantic conventions from the `v1.22.0` version of the OpenTelemetry Semantic Conventions. (#4735)
+- The `go.opentelemetry.io/otel/semconv/v1.23.0` package.
+  The package contains semantic conventions from the `v1.23.0` version of the OpenTelemetry Semantic Conventions. (#4746)
+- The `go.opentelemetry.io/otel/semconv/v1.23.1` package.
+  The package contains semantic conventions from the `v1.23.1` version of the OpenTelemetry Semantic Conventions. (#4749)
+- The `go.opentelemetry.io/otel/semconv/v1.24.0` package.
+  The package contains semantic conventions from the `v1.24.0` version of the OpenTelemetry Semantic Conventions. (#4770)
+- Add `WithResourceAsConstantLabels` option to apply resource attributes for every metric emitted by the Prometheus exporter. (#4733)
+- Experimental cardinality limiting is added to the metric SDK.
+  See [metric documentation](./sdk/metric/internal/x/README.md#cardinality-limit) for more information about this feature and how to enable it. (#4457)
+- Add `NewMemberRaw` and `NewKeyValuePropertyRaw` in `go.opentelemetry.io/otel/baggage`. (#4804)
+
+### Changed
+
+- Upgrade all use of `go.opentelemetry.io/otel/semconv` to use `v1.24.0`. (#4754)
+- Update transformations in `go.opentelemetry.io/otel/exporters/zipkin` to follow `v1.24.0` version of the OpenTelemetry specification. (#4754)
+- Record synchronous measurements when the passed context is canceled instead of dropping in `go.opentelemetry.io/otel/sdk/metric`.
+  If you do not want to make a measurement when the context is cancelled, you need to handle it yourself (e.g  `if ctx.Err() != nil`). (#4671)
+- Improve `go.opentelemetry.io/otel/trace.TraceState`'s performance. (#4722)
+- Improve `go.opentelemetry.io/otel/propagation.TraceContext`'s performance. (#4721)
+- Improve `go.opentelemetry.io/otel/baggage` performance. (#4743)
+- Improve performance of the `(*Set).Filter` method in `go.opentelemetry.io/otel/attribute` when the passed filter does not filter out any attributes from the set. (#4774)
+- `Member.String` in `go.opentelemetry.io/otel/baggage` percent-encodes only when necessary. (#4775)
+- Improve `go.opentelemetry.io/otel/trace.Span`'s performance when adding multiple attributes. (#4818)
+- `Property.Value` in `go.opentelemetry.io/otel/baggage` now returns a raw string instead of a percent-encoded value. (#4804)
+
+### Fixed
+
+- Fix `Parse` in `go.opentelemetry.io/otel/baggage` to validate member value before percent-decoding. (#4755)
+- Fix whitespace encoding of `Member.String` in `go.opentelemetry.io/otel/baggage`. (#4756)
+- Fix observable not registered error when the asynchronous instrument has a drop aggregation in `go.opentelemetry.io/otel/sdk/metric`. (#4772)
+- Fix baggage item key so that it is not canonicalized in `go.opentelemetry.io/otel/bridge/opentracing`. (#4776)
+- Fix `go.opentelemetry.io/otel/bridge/opentracing` to properly handle baggage values that requires escaping during propagation. (#4804)
+- Fix a bug where using multiple readers resulted in incorrect asynchronous counter values in `go.opentelemetry.io/otel/sdk/metric`. (#4742)
+
+## [1.21.0/0.44.0] 2023-11-16
+
+### Removed
+
+- Remove the deprecated `go.opentelemetry.io/otel/bridge/opencensus.NewTracer`. (#4706)
+- Remove the deprecated `go.opentelemetry.io/otel/exporters/otlp/otlpmetric` module. (#4707)
+- Remove the deprecated `go.opentelemetry.io/otel/example/view` module. (#4708)
+- Remove the deprecated `go.opentelemetry.io/otel/example/fib` module. (#4723)
+
+### Fixed
+
+- Do not parse non-protobuf responses in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp`. (#4719)
+- Do not parse non-protobuf responses in `go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp`. (#4719)
+
 ## [1.20.0/0.43.0] 2023-11-10
 
-This release brings a breaking change for custom trace API implementations. Some interfaces (`TracerProvider`, `Tracer`, `Span`) now embed the `go.opentelemetry.io/otel/trace/embedded` types. Implementors need to update their implementations based on what they want the default behavior to be. See the "API Implementations" section of the [trace API] package documentation for more information about how to accomplish this.
+This release brings a breaking change for custom trace API implementations. Some interfaces (`TracerProvider`, `Tracer`, `Span`) now embed the `go.opentelemetry.io/otel/trace/embedded` types. Implementers need to update their implementations based on what they want the default behavior to be. See the "API Implementations" section of the [trace API] package documentation for more information about how to accomplish this.
 
 ### Added
 
@@ -42,15 +431,15 @@ This release brings a breaking change for custom trace API implementations. Some
 - `go.opentelemetry.io/otel/bridge/opencensus.NewMetricProducer` returns a `*MetricProducer` struct instead of the metric.Producer interface. (#4583)
 - The `TracerProvider` in `go.opentelemetry.io/otel/trace` now embeds the `go.opentelemetry.io/otel/trace/embedded.TracerProvider` type.
   This extends the `TracerProvider` interface and is is a breaking change for any existing implementation.
-  Implementors need to update their implementations based on what they want the default behavior of the interface to be.
+  Implementers need to update their implementations based on what they want the default behavior of the interface to be.
   See the "API Implementations" section of the `go.opentelemetry.io/otel/trace` package documentation for more information about how to accomplish this. (#4620)
 - The `Tracer` in `go.opentelemetry.io/otel/trace` now embeds the `go.opentelemetry.io/otel/trace/embedded.Tracer` type.
   This extends the `Tracer` interface and is is a breaking change for any existing implementation.
-  Implementors need to update their implementations based on what they want the default behavior of the interface to be.
+  Implementers need to update their implementations based on what they want the default behavior of the interface to be.
   See the "API Implementations" section of the `go.opentelemetry.io/otel/trace` package documentation for more information about how to accomplish this. (#4620)
 - The `Span` in `go.opentelemetry.io/otel/trace` now embeds the `go.opentelemetry.io/otel/trace/embedded.Span` type.
   This extends the `Span` interface and is is a breaking change for any existing implementation.
-  Implementors need to update their implementations based on what they want the default behavior of the interface to be.
+  Implementers need to update their implementations based on what they want the default behavior of the interface to be.
   See the "API Implementations" section of the `go.opentelemetry.io/otel/trace` package documentation for more information about how to accomplish this. (#4620)
 - `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc` does no longer depend on `go.opentelemetry.io/otel/exporters/otlp/otlpmetric`. (#4660)
 - `go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp` does no longer depend on `go.opentelemetry.io/otel/exporters/otlp/otlpmetric`. (#4660)
@@ -686,7 +1075,7 @@ The next release will require at least [Go 1.19].
 - Exported `Status` codes in the `go.opentelemetry.io/otel/exporters/zipkin` exporter are now exported as all upper case values. (#3340)
 - `Aggregation`s from `go.opentelemetry.io/otel/sdk/metric` with no data are not exported. (#3394, #3436)
 - Re-enabled Attribute Filters in the Metric SDK. (#3396)
-- Asynchronous callbacks are only called if they are registered with at least one instrument that does not use drop aggragation. (#3408)
+- Asynchronous callbacks are only called if they are registered with at least one instrument that does not use drop aggregation. (#3408)
 - Do not report empty partial-success responses in the `go.opentelemetry.io/otel/exporters/otlp` exporters. (#3438, #3432)
 - Handle partial success responses in `go.opentelemetry.io/otel/exporters/otlp/otlpmetric` exporters. (#3162, #3440)
 - Prevent duplicate Prometheus description, unit, and type. (#3469)
@@ -1554,7 +1943,7 @@ with major version 0.
 - Setting error status while recording error with Span from oteltest package. (#1729)
 - The concept of a remote and local Span stored in a context is unified to just the current Span.
   Because of this `"go.opentelemetry.io/otel/trace".RemoteSpanContextFromContext` is removed as it is no longer needed.
-  Instead, `"go.opentelemetry.io/otel/trace".SpanContextFromContex` can be used to return the current Span.
+  Instead, `"go.opentelemetry.io/otel/trace".SpanContextFromContext` can be used to return the current Span.
   If needed, that Span's `SpanContext.IsRemote()` can then be used to determine if it is remote or not. (#1731)
 - The `HasRemoteParent` field of the `"go.opentelemetry.io/otel/sdk/trace".SamplingParameters` is removed.
   This field is redundant to the information returned from the `Remote` method of the `SpanContext` held in the `ParentContext` field. (#1749)
@@ -1731,7 +2120,7 @@ with major version 0.
 - `NewExporter` from `exporters/otlp` now takes a `ProtocolDriver` as a parameter. (#1369)
 - Many OTLP Exporter options became gRPC ProtocolDriver options. (#1369)
 - Unify endpoint API that related to OTel exporter. (#1401)
-- Optimize metric histogram aggregator to re-use its slice of buckets. (#1435)
+- Optimize metric histogram aggregator to reuse its slice of buckets. (#1435)
 - Metric aggregator Count() and histogram Bucket.Counts are consistently `uint64`. (1430)
 - Histogram aggregator accepts functional options, uses default boundaries if none given. (#1434)
 - `SamplingResult` now passed a `Tracestate` from the parent `SpanContext` (#1432)
@@ -2128,7 +2517,7 @@ This release migrates the default OpenTelemetry SDK into its own Go module, deco
 - Prometheus exporter will not apply stale updates or forget inactive metrics. (#903)
 - Add test for api.standard `HTTPClientAttributesFromHTTPRequest`. (#905)
 - Bump github.com/golangci/golangci-lint from 1.27.0 to 1.28.1 in /tools. (#901, #913)
-- Update otel-colector example to use the v0.5.0 collector. (#915)
+- Update otel-collector example to use the v0.5.0 collector. (#915)
 - The `grpctrace` instrumentation uses a span name conforming to the OpenTelemetry semantic conventions (does not contain a leading slash (`/`)). (#922)
 - The `grpctrace` instrumentation includes an `rpc.method` attribute now set to the gRPC method name. (#900, #922)
 - The `grpctrace` instrumentation `rpc.service` attribute now contains the package name if one exists.
@@ -2721,7 +3110,20 @@ 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/v1.20.0...HEAD
+[Unreleased]: https://github.com/open-telemetry/opentelemetry-go/compare/v1.31.0...HEAD
+[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
+[1.29.0/0.51.0/0.5.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.29.0
+[1.28.0/0.50.0/0.4.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.28.0
+[1.27.0/0.49.0/0.3.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.27.0
+[1.26.0/0.48.0/0.2.0-alpha]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.26.0
+[1.25.0/0.47.0/0.0.8/0.1.0-alpha]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.25.0
+[1.24.0/0.46.0/0.0.1-alpha]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.24.0
+[1.23.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.23.1
+[1.23.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.23.0
+[1.23.0-rc.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.23.0-rc.1
+[1.22.0/0.45.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.22.0
+[1.21.0/0.44.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.21.0
 [1.20.0/0.43.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.20.0
 [1.19.0/0.42.0/0.0.7]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.19.0
 [1.19.0-rc.1/0.42.0-rc.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.19.0-rc.1
@@ -2794,6 +3196,11 @@ It contains api and sdk for trace and meter.
 [0.1.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.1.1
 [0.1.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.1.0
 
+<!-- Released section ended -->
+
+[Go 1.23]: https://go.dev/doc/go1.23
+[Go 1.22]: https://go.dev/doc/go1.22
+[Go 1.21]: https://go.dev/doc/go1.21
 [Go 1.20]: https://go.dev/doc/go1.20
 [Go 1.19]: https://go.dev/doc/go1.19
 [Go 1.18]: https://go.dev/doc/go1.18
@@ -2801,3 +3208,5 @@ It contains api and sdk for trace and meter.
 [metric API]:https://pkg.go.dev/go.opentelemetry.io/otel/metric
 [metric SDK]:https://pkg.go.dev/go.opentelemetry.io/otel/sdk/metric
 [trace API]:https://pkg.go.dev/go.opentelemetry.io/otel/trace
+
+[GO-2024-2687]: https://pkg.go.dev/vuln/GO-2024-2687

vendor/go.opentelemetry.io/otel/CODEOWNERS

@@ -5,13 +5,13 @@
 #####################################################
 #
 # Learn about membership in OpenTelemetry community:
-#  https://github.com/open-telemetry/community/blob/main/community-membership.md
+#  https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md
 #
 #
 # Learn about CODEOWNERS file format:
 #  https://help.github.com/en/articles/about-code-owners
 #
 
-* @MrAlias @Aneurysm9 @evantorrie @XSAM @dashpole @MadVikingGod @pellared @hanyuancheung @dmathieu
+* @MrAlias @XSAM @dashpole @pellared @dmathieu
 
-CODEOWNERS @MrAlias @MadVikingGod @pellared
+CODEOWNERS @MrAlias @pellared @dashpole @XSAM @dmathieu

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

@@ -90,6 +90,10 @@ git push <YOUR_FORK> <YOUR_BRANCH_NAME>
 Open a pull request against the main `opentelemetry-go` repo. Be sure to add the pull
 request ID to the entry you added to `CHANGELOG.md`.
 
+Avoid rebasing and force-pushing to your branch to facilitate reviewing the pull request.
+Rewriting Git history makes it difficult to keep track of iterations during code review.
+All pull requests are squashed to a single commit upon merge to `main`.
+
 ### How to Receive Comments
 
 * If the PR is not ready for review, please put `[WIP]` in the title,
@@ -197,6 +201,16 @@ You can install and run a "local Go Doc site" in the following way:
 [`go.opentelemetry.io/otel/metric`](https://pkg.go.dev/go.opentelemetry.io/otel/metric)
 is an example of a very well-documented package.
 
+### README files
+
+Each (non-internal, non-test, non-documentation) package must contain a
+`README.md` file containing at least a title, and a `pkg.go.dev` badge.
+
+The README should not be a repetition of Go doc comments.
+
+You can verify the presence of all README files with the `make verify-readmes`
+command.
+
 ## Style Guide
 
 One of the primary goals of this project is that it is actually used by
@@ -556,12 +570,18 @@ functionality should be added, each one will need their own super-set
 interfaces and will duplicate the pattern. For this reason, the simple targeted
 interface that defines the specific functionality should be preferred.
 
+See also:
+[Keeping Your Modules Compatible: Working with interfaces](https://go.dev/blog/module-compatibility#working-with-interfaces).
+
 ### Testing
 
 The tests should never leak goroutines.
 
 Use the term `ConcurrentSafe` in the test name when it aims to verify the
-absence of race conditions.
+absence of race conditions. The top-level tests with this term will be run
+many times in the `test-concurrent-safe` CI job to increase the chance of
+catching concurrency issues. This does not apply to subtests when this term
+is not in their root name.
 
 ### Internal packages
 
@@ -587,32 +607,52 @@ this.
 
 [^3]: https://github.com/open-telemetry/opentelemetry-go/issues/3548
 
+### Ignoring context cancellation
+
+OpenTelemetry API implementations need to ignore the cancellation of the context that are
+passed when recording a value (e.g. starting a span, recording a measurement, emitting a log).
+Recording methods should not return an error describing the cancellation state of the context
+when they complete, nor should they abort any work.
+
+This rule may not apply if the OpenTelemetry specification defines a timeout mechanism for
+the method. In that case the context cancellation can be used for the timeout with the
+restriction that this behavior is documented for the method. Otherwise, timeouts
+are expected to be handled by the user calling the API, not the implementation.
+
+Stoppage of the telemetry pipeline is handled by calling the appropriate `Shutdown` method
+of a provider. It is assumed the context passed from a user is not used for this purpose.
+
+Outside of the direct recording of telemetry from the API (e.g. exporting telemetry,
+force flushing telemetry, shutting down a signal provider) the context cancellation
+should be honored. This means all work done on behalf of the user provided context
+should be canceled.
+
 ## Approvers and Maintainers
 
 ### Approvers
 
-- [Evan Torrie](https://github.com/evantorrie), Verizon Media
-- [Sam Xie](https://github.com/XSAM), Cisco/AppDynamics
-- [David Ashpole](https://github.com/dashpole), Google
-- [Chester Cheung](https://github.com/hanyuancheung), Tencent
-- [Damien Mathieu](https://github.com/dmathieu), Elastic
-- [Anthony Mirabella](https://github.com/Aneurysm9), AWS
-
 ### Maintainers
 
-- [Aaron Clawson](https://github.com/MadVikingGod), LightStep
+- [Damien Mathieu](https://github.com/dmathieu), Elastic
+- [David Ashpole](https://github.com/dashpole), Google
 - [Robert Pająk](https://github.com/pellared), Splunk
+- [Sam Xie](https://github.com/XSAM), Cisco/AppDynamics
 - [Tyler Yahn](https://github.com/MrAlias), Splunk
 
 ### Emeritus
 
+- [Aaron Clawson](https://github.com/MadVikingGod), LightStep
+- [Anthony Mirabella](https://github.com/Aneurysm9), AWS
+- [Chester Cheung](https://github.com/hanyuancheung), Tencent
+- [Evan Torrie](https://github.com/evantorrie), Yahoo
 - [Gustavo Silva Paiva](https://github.com/paivagustavo), LightStep
 - [Josh MacDonald](https://github.com/jmacd), LightStep
+- [Liz Fong-Jones](https://github.com/lizthegrey), Honeycomb
 
 ### Become an Approver or a Maintainer
 
 See the [community membership document in OpenTelemetry community
-repo](https://github.com/open-telemetry/community/blob/main/community-membership.md).
+repo](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md).
 
 [Approver]: #approvers
 [Maintainer]: #maintainers

vendor/go.opentelemetry.io/otel/Makefile

@@ -1,16 +1,5 @@
 # Copyright The OpenTelemetry Authors
-#
+# SPDX-License-Identifier: Apache-2.0
-# 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.
 
 TOOLS_MOD_DIR := ./internal/tools
 
@@ -25,8 +14,8 @@ TIMEOUT = 60
 .DEFAULT_GOAL := precommit
 
 .PHONY: precommit ci
-precommit: generate dependabot-generate license-check misspell go-mod-tidy golangci-lint-fix test-default
+precommit: generate license-check misspell go-mod-tidy golangci-lint-fix verify-readmes verify-mods test-default
-ci: generate dependabot-check license-check lint vanity-import-check build test-default check-clean-work-tree test-coverage
+ci: generate license-check lint vanity-import-check verify-readmes verify-mods build test-default check-clean-work-tree test-coverage
 
 # Tools
 
@@ -34,7 +23,7 @@ TOOLS = $(CURDIR)/.tools
 
 $(TOOLS):
 	@mkdir -p $@
-$(TOOLS)/%: | $(TOOLS)
+$(TOOLS)/%: $(TOOLS_MOD_DIR)/go.mod | $(TOOLS)
 	cd $(TOOLS_MOD_DIR) && \
 	$(GO) build -o $@ $(PACKAGE)
 
@@ -50,9 +39,6 @@ $(TOOLS)/crosslink: PACKAGE=go.opentelemetry.io/build-tools/crosslink
 SEMCONVKIT = $(TOOLS)/semconvkit
 $(TOOLS)/semconvkit: PACKAGE=go.opentelemetry.io/otel/$(TOOLS_MOD_DIR)/semconvkit
 
-DBOTCONF = $(TOOLS)/dbotconf
-$(TOOLS)/dbotconf: PACKAGE=go.opentelemetry.io/build-tools/dbotconf
-
 GOLANGCI_LINT = $(TOOLS)/golangci-lint
 $(TOOLS)/golangci-lint: PACKAGE=github.com/golangci/golangci-lint/cmd/golangci-lint
 
@@ -68,9 +54,6 @@ $(TOOLS)/stringer: PACKAGE=golang.org/x/tools/cmd/stringer
 PORTO = $(TOOLS)/porto
 $(TOOLS)/porto: PACKAGE=github.com/jcchavezs/porto/cmd/porto
 
-GOJQ = $(TOOLS)/gojq
-$(TOOLS)/gojq: PACKAGE=github.com/itchyny/gojq/cmd/gojq
-
 GOTMPL = $(TOOLS)/gotmpl
 $(GOTMPL): PACKAGE=go.opentelemetry.io/build-tools/gotmpl
 
@@ -81,7 +64,7 @@ GOVULNCHECK = $(TOOLS)/govulncheck
 $(TOOLS)/govulncheck: PACKAGE=golang.org/x/vuln/cmd/govulncheck
 
 .PHONY: tools
-tools: $(CROSSLINK) $(DBOTCONF) $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(GOJQ) $(SEMCONVGEN) $(MULTIMOD) $(SEMCONVKIT) $(GOTMPL) $(GORELEASE)
+tools: $(CROSSLINK) $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(SEMCONVGEN) $(MULTIMOD) $(SEMCONVKIT) $(GOTMPL) $(GORELEASE)
 
 # Virtualized python tools via docker
 
@@ -110,7 +93,7 @@ $(PYTOOLS):
 	@$(DOCKERPY) bash -c "python3 -m venv $(VENVDIR) && $(PIP) install --upgrade pip"
 
 # Install python packages into the virtual environment.
-$(PYTOOLS)/%: | $(PYTOOLS)
+$(PYTOOLS)/%: $(PYTOOLS)
 	@$(DOCKERPY) $(PIP) install -r requirements.txt
 
 CODESPELL = $(PYTOOLS)/codespell
@@ -124,18 +107,18 @@ generate: go-generate vanity-import-fix
 .PHONY: go-generate
 go-generate: $(OTEL_GO_MOD_DIRS:%=go-generate/%)
 go-generate/%: DIR=$*
-go-generate/%: | $(STRINGER) $(GOTMPL)
+go-generate/%: $(STRINGER) $(GOTMPL)
 	@echo "$(GO) generate $(DIR)/..." \
 		&& cd $(DIR) \
 		&& PATH="$(TOOLS):$${PATH}" $(GO) generate ./...
 
 .PHONY: vanity-import-fix
-vanity-import-fix: | $(PORTO)
+vanity-import-fix: $(PORTO)
 	@$(PORTO) --include-internal -w .
 
 # Generate go.work file for local development.
 .PHONY: go-work
-go-work: | $(CROSSLINK)
+go-work: $(CROSSLINK)
 	$(CROSSLINK) work --root=$(shell pwd)
 
 # Build
@@ -159,12 +142,14 @@ build-tests/%:
 
 # Tests
 
-TEST_TARGETS := test-default test-bench test-short test-verbose test-race
+TEST_TARGETS := test-default test-bench test-short test-verbose test-race test-concurrent-safe
 .PHONY: $(TEST_TARGETS) test
 test-default test-race: ARGS=-race
 test-bench:   ARGS=-run=xxxxxMatchNothingxxxxx -test.benchtime=1ms -bench=.
 test-short:   ARGS=-short
 test-verbose: ARGS=-v -race
+test-concurrent-safe: ARGS=-run=ConcurrentSafe -count=100 -race
+test-concurrent-safe: TIMEOUT=120
 $(TEST_TARGETS): test
 test: $(OTEL_GO_MOD_DIRS:%=test/%)
 test/%: DIR=$*
@@ -178,7 +163,7 @@ test/%:
 COVERAGE_MODE    = atomic
 COVERAGE_PROFILE = coverage.out
 .PHONY: test-coverage
-test-coverage: | $(GOCOVMERGE)
+test-coverage: $(GOCOVMERGE)
 	@set -e; \
 	printf "" > coverage.txt; \
 	for dir in $(ALL_COVERAGE_MOD_DIRS); do \
@@ -192,40 +177,37 @@ test-coverage: | $(GOCOVMERGE)
 	done; \
 	$(GOCOVMERGE) $$(find . -name coverage.out) > coverage.txt
 
-# Adding a directory will include all benchmarks in that direcotry if a filter is not specified.
-BENCHMARK_TARGETS := sdk/trace
 .PHONY: benchmark
-benchmark: $(BENCHMARK_TARGETS:%=benchmark/%)
+benchmark: $(OTEL_GO_MOD_DIRS:%=benchmark/%)
-BENCHMARK_FILTER = .
-# You can override the filter for a particular directory by adding a rule here.
-benchmark/sdk/trace: BENCHMARK_FILTER = SpanWithAttributes_8/AlwaysSample
 benchmark/%:
-	@echo "$(GO) test -timeout $(TIMEOUT)s -run=xxxxxMatchNothingxxxxx -bench=$(BENCHMARK_FILTER) $*..." \
+	@echo "$(GO) test -run=xxxxxMatchNothingxxxxx -bench=. $*..." \
 		&& cd $* \
-		$(foreach filter, $(BENCHMARK_FILTER), && $(GO) test -timeout $(TIMEOUT)s -run=xxxxxMatchNothingxxxxx -bench=$(filter))
+		&& $(GO) list ./... \
+		| grep -v third_party \
+		| xargs $(GO) test -run=xxxxxMatchNothingxxxxx -bench=.
 
 .PHONY: golangci-lint golangci-lint-fix
 golangci-lint-fix: ARGS=--fix
 golangci-lint-fix: golangci-lint
 golangci-lint: $(OTEL_GO_MOD_DIRS:%=golangci-lint/%)
 golangci-lint/%: DIR=$*
-golangci-lint/%: | $(GOLANGCI_LINT)
+golangci-lint/%: $(GOLANGCI_LINT)
 	@echo 'golangci-lint $(if $(ARGS),$(ARGS) ,)$(DIR)' \
 		&& cd $(DIR) \
 		&& $(GOLANGCI_LINT) run --allow-serial-runners $(ARGS)
 
 .PHONY: crosslink
-crosslink: | $(CROSSLINK)
+crosslink: $(CROSSLINK)
 	@echo "Updating intra-repository dependencies in all go modules" \
 		&& $(CROSSLINK) --root=$(shell pwd) --prune
 
 .PHONY: go-mod-tidy
 go-mod-tidy: $(ALL_GO_MOD_DIRS:%=go-mod-tidy/%)
 go-mod-tidy/%: DIR=$*
-go-mod-tidy/%: | crosslink
+go-mod-tidy/%: crosslink
 	@echo "$(GO) mod tidy in $(DIR)" \
 		&& cd $(DIR) \
-		&& $(GO) mod tidy -compat=1.20
+		&& $(GO) mod tidy -compat=1.21
 
 .PHONY: lint-modules
 lint-modules: go-mod-tidy
@@ -234,23 +216,23 @@ lint-modules: go-mod-tidy
 lint: misspell lint-modules golangci-lint govulncheck
 
 .PHONY: vanity-import-check
-vanity-import-check: | $(PORTO)
+vanity-import-check: $(PORTO)
 	@$(PORTO) --include-internal -l . || ( echo "(run: make vanity-import-fix)"; exit 1 )
 
 .PHONY: misspell
-misspell: | $(MISSPELL)
+misspell: $(MISSPELL)
 	@$(MISSPELL) -w $(ALL_DOCS)
 
 .PHONY: govulncheck
 govulncheck: $(OTEL_GO_MOD_DIRS:%=govulncheck/%)
 govulncheck/%: DIR=$*
-govulncheck/%: | $(GOVULNCHECK)
+govulncheck/%: $(GOVULNCHECK)
 	@echo "govulncheck ./... in $(DIR)" \
 		&& cd $(DIR) \
 		&& $(GOVULNCHECK) ./...
 
 .PHONY: codespell
-codespell: | $(CODESPELL)
+codespell: $(CODESPELL)
 	@$(DOCKERPY) $(CODESPELL)
 
 .PHONY: license-check
@@ -263,15 +245,6 @@ license-check:
 	           exit 1; \
 	   fi
 
-DEPENDABOT_CONFIG = .github/dependabot.yml
-.PHONY: dependabot-check
-dependabot-check: | $(DBOTCONF)
-	@$(DBOTCONF) verify $(DEPENDABOT_CONFIG) || ( echo "(run: make dependabot-generate)"; exit 1 )
-
-.PHONY: dependabot-generate
-dependabot-generate: | $(DBOTCONF)
-	@$(DBOTCONF) generate > $(DEPENDABOT_CONFIG)
-
 .PHONY: check-clean-work-tree
 check-clean-work-tree:
 	@if ! git diff --quiet; then \
@@ -284,13 +257,11 @@ check-clean-work-tree:
 
 SEMCONVPKG ?= "semconv/"
 .PHONY: semconv-generate
-semconv-generate: | $(SEMCONVGEN) $(SEMCONVKIT)
+semconv-generate: $(SEMCONVGEN) $(SEMCONVKIT)
 	[ "$(TAG)" ] || ( echo "TAG unset: missing opentelemetry semantic-conventions tag"; exit 1 )
 	[ "$(OTEL_SEMCONV_REPO)" ] || ( echo "OTEL_SEMCONV_REPO unset: missing path to opentelemetry semantic-conventions repo"; exit 1 )
-	$(SEMCONVGEN) -i "$(OTEL_SEMCONV_REPO)/model/." --only=span -p conventionType=trace -f trace.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
 	$(SEMCONVGEN) -i "$(OTEL_SEMCONV_REPO)/model/." --only=attribute_group -p conventionType=trace -f attribute_group.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
-	$(SEMCONVGEN) -i "$(OTEL_SEMCONV_REPO)/model/." --only=event -p conventionType=event -f event.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
+	$(SEMCONVGEN) -i "$(OTEL_SEMCONV_REPO)/model/." --only=metric  -f metric.go -t "$(SEMCONVPKG)/metric_template.j2" -s "$(TAG)"
-	$(SEMCONVGEN) -i "$(OTEL_SEMCONV_REPO)/model/." --only=resource -p conventionType=resource -f resource.go -t "$(SEMCONVPKG)/template.j2" -s "$(TAG)"
 	$(SEMCONVKIT) -output "$(SEMCONVPKG)/$(TAG)" -tag "$(TAG)"
 
 .PHONY: gorelease
@@ -302,17 +273,25 @@ gorelease/%:| $(GORELEASE)
 		&& $(GORELEASE) \
 		|| echo ""
 
+.PHONY: verify-mods
+verify-mods: $(MULTIMOD)
+	$(MULTIMOD) verify
+
 .PHONY: prerelease
-prerelease: | $(MULTIMOD)
+prerelease: verify-mods
 	@[ "${MODSET}" ] || ( echo ">> env var MODSET is not set"; exit 1 )
-	$(MULTIMOD) verify && $(MULTIMOD) prerelease -m ${MODSET}
+	$(MULTIMOD) prerelease -m ${MODSET}
 
 COMMIT ?= "HEAD"
 .PHONY: add-tags
-add-tags: | $(MULTIMOD)
+add-tags: verify-mods
 	@[ "${MODSET}" ] || ( echo ">> env var MODSET is not set"; exit 1 )
-	$(MULTIMOD) verify && $(MULTIMOD) tag -m ${MODSET} -c ${COMMIT}
+	$(MULTIMOD) tag -m ${MODSET} -c ${COMMIT}
 
 .PHONY: lint-markdown
-lint-markdown: 
+lint-markdown:
-	docker run -v "$(CURDIR):$(WORKDIR)" docker://avtodev/markdown-lint:v1 -c $(WORKDIR)/.markdownlint.yaml $(WORKDIR)/**/*.md
+	docker run -v "$(CURDIR):$(WORKDIR)" avtodev/markdown-lint:v1 -c $(WORKDIR)/.markdownlint.yaml $(WORKDIR)/**/*.md
+
+.PHONY: verify-readmes
+verify-readmes:
+	./verify_readmes.sh

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

@@ -11,14 +11,11 @@ It provides a set of APIs to directly measure performance and behavior of your s
 
 ## Project Status
 
-| Signal  | Status     |
+| Signal  | Status             |
-|---------|------------|
+|---------|--------------------|
-| Traces  | Stable     |
+| Traces  | Stable             |
-| Metrics | Stable     |
+| Metrics | Stable             |
-| Logs    | Design [1] |
+| Logs    | Beta[^1]           |
-
-- [1]: Currently the logs signal development is in a design phase ([#4696](https://github.com/open-telemetry/opentelemetry-go/issues/4696)).
-   No Logs Pull Requests are currently being accepted.
 
 Progress and status specific to this repository is tracked in our
 [project boards](https://github.com/open-telemetry/opentelemetry-go/projects)
@@ -28,6 +25,8 @@ and
 Project versioning information and stability guarantees can be found in the
 [versioning documentation](VERSIONING.md).
 
+[^1]: https://github.com/orgs/open-telemetry/projects/43
+
 ### Compatibility
 
 OpenTelemetry-Go ensures compatibility with the current supported versions of
@@ -48,25 +47,29 @@ stop ensuring compatibility with these versions in the following manner:
 
 Currently, this project supports the following environments.
 
-| OS      | Go Version | Architecture |
+| OS       | Go Version | Architecture |
-|---------|------------|--------------|
+|----------|------------|--------------|
-| Ubuntu  | 1.21       | amd64        |
+| Ubuntu   | 1.23       | amd64        |
-| Ubuntu  | 1.20       | amd64        |
+| Ubuntu   | 1.22       | amd64        |
-| Ubuntu  | 1.21       | 386          |
+| Ubuntu   | 1.23       | 386          |
-| Ubuntu  | 1.20       | 386          |
+| Ubuntu   | 1.22       | 386          |
-| MacOS   | 1.21       | amd64        |
+| Linux    | 1.23       | arm64        |
-| MacOS   | 1.20       | amd64        |
+| Linux    | 1.22       | arm64        |
-| Windows | 1.21       | amd64        |
+| macOS 13 | 1.23       | amd64        |
-| Windows | 1.20       | amd64        |
+| macOS 13 | 1.22       | amd64        |
-| Windows | 1.21       | 386          |
+| macOS    | 1.23       | arm64        |
-| Windows | 1.20       | 386          |
+| macOS    | 1.22       | arm64        |
+| Windows  | 1.23       | amd64        |
+| Windows  | 1.22       | amd64        |
+| Windows  | 1.23       | 386          |
+| Windows  | 1.22       | 386          |
 
 While this project should work for other systems, no compatibility guarantees
 are made for those systems currently.
 
 ## Getting Started
 
-You can find a getting started guide on [opentelemetry.io](https://opentelemetry.io/docs/go/getting-started/).
+You can find a getting started guide on [opentelemetry.io](https://opentelemetry.io/docs/languages/go/getting-started/).
 
 OpenTelemetry's goal is to provide a single set of APIs to capture distributed
 traces and metrics from your application and send them to an observability
@@ -86,8 +89,8 @@ If you need to extend the telemetry an instrumentation library provides or want
 to build your own instrumentation for your application directly you will need
 to use the
 [Go otel](https://pkg.go.dev/go.opentelemetry.io/otel)
-package. The included [examples](./example/) are a good way to see some
+package. The [examples](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/examples)
-practical uses of this process.
+are a good way to see some practical uses of this process.
 
 ### Export
 
@@ -96,12 +99,12 @@ export pipeline to send that telemetry to an observability platform.
 
 All officially supported exporters for the OpenTelemetry project are contained in the [exporters directory](./exporters).
 
-| Exporter                              | Metrics | Traces |
+| Exporter                              | Logs | Metrics | Traces |
-|---------------------------------------|:-------:|:------:|
+|---------------------------------------|:----:|:-------:|:------:|
-| [OTLP](./exporters/otlp/)             |    ✓    |   ✓    |
+| [OTLP](./exporters/otlp/)             |  ✓   |    ✓    |   ✓    |
-| [Prometheus](./exporters/prometheus/) |    ✓    |        |
+| [Prometheus](./exporters/prometheus/) |      |    ✓    |        |
-| [stdout](./exporters/stdout/)         |    ✓    |   ✓    |
+| [stdout](./exporters/stdout/)         |  ✓   |    ✓    |   ✓    |
-| [Zipkin](./exporters/zipkin/)         |         |   ✓    |
+| [Zipkin](./exporters/zipkin/)         |      |         |   ✓    |
 
 ## Contributing
 

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

@@ -27,6 +27,12 @@ You can run `make gorelease` that runs [gorelease](https://pkg.go.dev/golang.org
 
 You can check/report problems with `gorelease` [here](https://golang.org/issues/26420).
 
+## Verify changes for contrib repository
+
+If the changes in the main repository are going to affect the contrib repository, it is important to verify that the changes are compatible with the contrib repository.
+
+Follow [the steps](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/RELEASING.md#verify-otel-changes) in the contrib repository to verify OTel changes.
+
 ## Pre-Release
 
 First, decide which module sets will be released and update their versions
@@ -63,6 +69,7 @@ Update go.mod for submodules to depend on the new release which will happen in t
        ```
 
    - Move all the `Unreleased` changes into a new section following the title scheme (`[<new tag>] - <date of release>`).
+   - Make sure the new section is under the comment for released section, like `<!-- Released section -->`, so it is protected from being overwritten in the future.
    - Update all the appropriate links at the bottom.
 
 4. Push the changes to upstream and create a Pull Request on GitHub.
@@ -104,17 +111,6 @@ It is critical you make sure the version you push upstream is correct.
 Finally create a Release for the new `<new tag>` on GitHub.
 The release body should include all the release notes from the Changelog for this release.
 
-## Verify Examples
-
-After releasing verify that examples build outside of the repository.
-
-```
-./verify_examples.sh
-```
-
-The script copies examples into a different directory removes any `replace` declarations in `go.mod` and builds them.
-This ensures they build with the published release, not the local copy.
-
 ## Post-Release
 
 ### Contrib Repository
@@ -123,12 +119,12 @@ Once verified be sure to [make a release for the `contrib` repository](https://g
 
 ### Website Documentation
 
-Update the [Go instrumentation documentation] in the OpenTelemetry website under [content/en/docs/instrumentation/go].
+Update the [Go instrumentation documentation] in the OpenTelemetry website under [content/en/docs/languages/go].
 Importantly, bump any package versions referenced to be the latest one you just released and ensure all code examples still compile and are accurate.
 
 [OpenTelemetry Semantic Conventions]: https://github.com/open-telemetry/semantic-conventions
-[Go instrumentation documentation]: https://opentelemetry.io/docs/instrumentation/go/
+[Go instrumentation documentation]: https://opentelemetry.io/docs/languages/go/
-[content/en/docs/instrumentation/go]: https://github.com/open-telemetry/opentelemetry.io/tree/main/content/en/docs/instrumentation/go
+[content/en/docs/languages/go]: https://github.com/open-telemetry/opentelemetry.io/tree/main/content/en/docs/languages/go
 
 ### Demo Repository
 

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

@@ -0,0 +1,3 @@
+# Attribute
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/attribute)](https://pkg.go.dev/go.opentelemetry.io/otel/attribute)

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute provides key and value attributes.
 package attribute // import "go.opentelemetry.io/otel/attribute"

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 

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

@@ -1,24 +1,14 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 
 import (
+	"cmp"
 	"encoding/json"
 	"reflect"
+	"slices"
 	"sort"
-	"sync"
 )
 
 type (
@@ -26,23 +16,33 @@ type (
 	// immutable set of attributes, with an internal cache for storing
 	// attribute encodings.
 	//
-	// This type supports the Equivalent method of comparison using values of
+	// This type will remain comparable for backwards compatibility. The
-	// type Distinct.
+	// equivalence of Sets across versions is not guaranteed to be stable.
+	// Prior versions may find two Sets to be equal or not when compared
+	// directly (i.e. ==), but subsequent versions may not. Users should use
+	// the Equals method to ensure stable equivalence checking.
+	//
+	// Users should also use the Distinct returned from Equivalent as a map key
+	// instead of a Set directly. In addition to that type providing guarantees
+	// on stable equivalence, it may also provide performance improvements.
 	Set struct {
 		equivalent Distinct
 	}
 
-	// Distinct wraps a variable-size array of KeyValue, constructed with keys
+	// Distinct is a unique identifier of a Set.
-	// in sorted order. This can be used as a map key or for equality checking
+	//
-	// between Sets.
+	// Distinct is designed to be ensures equivalence stability: comparisons
+	// will return the save value across versions. For this reason, Distinct
+	// should always be used as a map key instead of a Set.
 	Distinct struct {
 		iface interface{}
 	}
 
-	// Sortable implements sort.Interface, used for sorting KeyValue. This is
+	// Sortable implements sort.Interface, used for sorting KeyValue.
-	// an exported type to support a memory optimization. A pointer to one of
+	//
-	// these is needed for the call to sort.Stable(), which the caller may
+	// Deprecated: This type is no longer used. It was added as a performance
-	// provide in order to avoid an allocation. See NewSetWithSortable().
+	// optimization for Go < 1.21 that is no longer needed (Go < 1.21 is no
+	// longer supported by the module).
 	Sortable []KeyValue
 )
 
@@ -56,12 +56,6 @@ var (
 			iface: [0]KeyValue{},
 		},
 	}
-
-	// sortables is a pool of Sortables used to create Sets with a user does
-	// not provide one.
-	sortables = sync.Pool{
-		New: func() interface{} { return new(Sortable) },
-	}
 )
 
 // EmptySet returns a reference to a Set with no elements.
@@ -187,13 +181,7 @@ func empty() Set {
 // Except for empty sets, this method adds an additional allocation compared
 // with calls that include a Sortable.
 func NewSet(kvs ...KeyValue) Set {
-	// Check for empty set.
+	s, _ := NewSetWithFiltered(kvs, nil)
-	if len(kvs) == 0 {
-		return empty()
-	}
-	srt := sortables.Get().(*Sortable)
-	s, _ := NewSetWithSortableFiltered(kvs, srt, nil)
-	sortables.Put(srt)
 	return s
 }
 
@@ -201,12 +189,10 @@ func NewSet(kvs ...KeyValue) Set {
 // NewSetWithSortableFiltered for more details.
 //
 // This call includes a Sortable option as a memory optimization.
-func NewSetWithSortable(kvs []KeyValue, tmp *Sortable) Set {
+//
-	// Check for empty set.
+// Deprecated: Use [NewSet] instead.
-	if len(kvs) == 0 {
+func NewSetWithSortable(kvs []KeyValue, _ *Sortable) Set {
-		return empty()
+	s, _ := NewSetWithFiltered(kvs, nil)
-	}
-	s, _ := NewSetWithSortableFiltered(kvs, tmp, nil)
 	return s
 }
 
@@ -220,10 +206,37 @@ func NewSetWithFiltered(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
 	if len(kvs) == 0 {
 		return empty(), nil
 	}
-	srt := sortables.Get().(*Sortable)
+
-	s, filtered := NewSetWithSortableFiltered(kvs, srt, filter)
+	// Stable sort so the following de-duplication can implement
-	sortables.Put(srt)
+	// last-value-wins semantics.
-	return s, filtered
+	slices.SortStableFunc(kvs, func(a, b KeyValue) int {
+		return cmp.Compare(a.Key, b.Key)
+	})
+
+	position := len(kvs) - 1
+	offset := position - 1
+
+	// The requirements stated above require that the stable
+	// result be placed in the end of the input slice, while
+	// overwritten values are swapped to the beginning.
+	//
+	// De-duplicate with last-value-wins semantics.  Preserve
+	// duplicate values at the beginning of the input slice.
+	for ; offset >= 0; offset-- {
+		if kvs[offset].Key == kvs[position].Key {
+			continue
+		}
+		position--
+		kvs[offset], kvs[position] = kvs[position], kvs[offset]
+	}
+	kvs = kvs[position:]
+
+	if filter != nil {
+		if div := filteredToFront(kvs, filter); div != 0 {
+			return Set{equivalent: computeDistinct(kvs[div:])}, kvs[:div]
+		}
+	}
+	return Set{equivalent: computeDistinct(kvs)}, nil
 }
 
 // NewSetWithSortableFiltered returns a new Set.
@@ -249,82 +262,71 @@ func NewSetWithFiltered(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
 //
 // The second []KeyValue return value is a list of attributes that were
 // excluded by the Filter (if non-nil).
-func NewSetWithSortableFiltered(kvs []KeyValue, tmp *Sortable, filter Filter) (Set, []KeyValue) {
+//
-	// Check for empty set.
+// Deprecated: Use [NewSetWithFiltered] instead.
-	if len(kvs) == 0 {
+func NewSetWithSortableFiltered(kvs []KeyValue, _ *Sortable, filter Filter) (Set, []KeyValue) {
-		return empty(), nil
+	return NewSetWithFiltered(kvs, filter)
-	}
-
-	*tmp = kvs
-
-	// Stable sort so the following de-duplication can implement
-	// last-value-wins semantics.
-	sort.Stable(tmp)
-
-	*tmp = nil
-
-	position := len(kvs) - 1
-	offset := position - 1
-
-	// The requirements stated above require that the stable
-	// result be placed in the end of the input slice, while
-	// overwritten values are swapped to the beginning.
-	//
-	// De-duplicate with last-value-wins semantics.  Preserve
-	// duplicate values at the beginning of the input slice.
-	for ; offset >= 0; offset-- {
-		if kvs[offset].Key == kvs[position].Key {
-			continue
-		}
-		position--
-		kvs[offset], kvs[position] = kvs[position], kvs[offset]
-	}
-	if filter != nil {
-		return filterSet(kvs[position:], filter)
-	}
-	return Set{
-		equivalent: computeDistinct(kvs[position:]),
-	}, nil
 }
 
-// filterSet reorders kvs so that included keys are contiguous at the end of
+// filteredToFront filters slice in-place using keep function. All KeyValues that need to
-// the slice, while excluded keys precede the included keys.
+// be removed are moved to the front. All KeyValues that need to be kept are
-func filterSet(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
+// moved (in-order) to the back. The index for the first KeyValue to be kept is
-	var excluded []KeyValue
+// returned.
-
+func filteredToFront(slice []KeyValue, keep Filter) int {
-	// Move attributes that do not match the filter so they're adjacent before
+	n := len(slice)
-	// calling computeDistinct().
+	j := n
-	distinctPosition := len(kvs)
+	for i := n - 1; i >= 0; i-- {
-
+		if keep(slice[i]) {
-	// Swap indistinct keys forward and distinct keys toward the
+			j--
-	// end of the slice.
+			slice[i], slice[j] = slice[j], slice[i]
-	offset := len(kvs) - 1
-	for ; offset >= 0; offset-- {
-		if filter(kvs[offset]) {
-			distinctPosition--
-			kvs[offset], kvs[distinctPosition] = kvs[distinctPosition], kvs[offset]
-			continue
 		}
 	}
-	excluded = kvs[:distinctPosition]
+	return j
-
-	return Set{
-		equivalent: computeDistinct(kvs[distinctPosition:]),
-	}, excluded
 }
 
 // Filter returns a filtered copy of this Set. See the documentation for
 // NewSetWithSortableFiltered for more details.
 func (l *Set) Filter(re Filter) (Set, []KeyValue) {
 	if re == nil {
-		return Set{
+		return *l, nil
-			equivalent: l.equivalent,
-		}, nil
 	}
 
-	// Note: This could be refactored to avoid the temporary slice
+	// Iterate in reverse to the first attribute that will be filtered out.
-	// allocation, if it proves to be expensive.
+	n := l.Len()
-	return filterSet(l.ToSlice(), re)
+	first := n - 1
+	for ; first >= 0; first-- {
+		kv, _ := l.Get(first)
+		if !re(kv) {
+			break
+		}
+	}
+
+	// No attributes will be dropped, return the immutable Set l and nil.
+	if first < 0 {
+		return *l, nil
+	}
+
+	// Copy now that we know we need to return a modified set.
+	//
+	// Do not do this in-place on the underlying storage of *Set l. Sets are
+	// immutable and filtering should not change this.
+	slice := l.ToSlice()
+
+	// Don't re-iterate the slice if only slice[0] is filtered.
+	if first == 0 {
+		// It is safe to assume len(slice) >= 1 given we found at least one
+		// attribute above that needs to be filtered out.
+		return Set{equivalent: computeDistinct(slice[1:])}, slice[:1]
+	}
+
+	// Move the filtered slice[first] to the front (preserving order).
+	kv := slice[first]
+	copy(slice[1:first+1], slice[:first])
+	slice[0] = kv
+
+	// Do not re-evaluate re(slice[first+1:]).
+	div := filteredToFront(slice[1:first+1], re) + 1
+	return Set{equivalent: computeDistinct(slice[div:])}, slice[:div]
 }
 
 // computeDistinct returns a Distinct using either the fixed- or
@@ -345,45 +347,25 @@ func computeDistinct(kvs []KeyValue) Distinct {
 func computeDistinctFixed(kvs []KeyValue) interface{} {
 	switch len(kvs) {
 	case 1:
-		ptr := new([1]KeyValue)
+		return [1]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 2:
-		ptr := new([2]KeyValue)
+		return [2]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 3:
-		ptr := new([3]KeyValue)
+		return [3]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 4:
-		ptr := new([4]KeyValue)
+		return [4]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 5:
-		ptr := new([5]KeyValue)
+		return [5]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 6:
-		ptr := new([6]KeyValue)
+		return [6]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 7:
-		ptr := new([7]KeyValue)
+		return [7]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 8:
-		ptr := new([8]KeyValue)
+		return [8]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 9:
-		ptr := new([9]KeyValue)
+		return [9]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	case 10:
-		ptr := new([10]KeyValue)
+		return [10]KeyValue(kvs)
-		copy((*ptr)[:], kvs)
-		return *ptr
 	default:
 		return nil
 	}
@@ -404,7 +386,7 @@ func (l *Set) MarshalJSON() ([]byte, error) {
 	return json.Marshal(l.equivalent.iface)
 }
 
-// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+// MarshalLog is the marshaling function used by the logging system to represent this Set.
 func (l Set) MarshalLog() interface{} {
 	kvs := make(map[string]string)
 	for _, kv := range l.ToSlice() {

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute // import "go.opentelemetry.io/otel/attribute"
 
@@ -242,15 +231,27 @@ func (v Value) Emit() string {
 	case BOOL:
 		return strconv.FormatBool(v.AsBool())
 	case INT64SLICE:
-		return fmt.Sprint(v.asInt64Slice())
+		j, err := json.Marshal(v.asInt64Slice())
+		if err != nil {
+			return fmt.Sprintf("invalid: %v", v.asInt64Slice())
+		}
+		return string(j)
 	case INT64:
 		return strconv.FormatInt(v.AsInt64(), 10)
 	case FLOAT64SLICE:
-		return fmt.Sprint(v.asFloat64Slice())
+		j, err := json.Marshal(v.asFloat64Slice())
+		if err != nil {
+			return fmt.Sprintf("invalid: %v", v.asFloat64Slice())
+		}
+		return string(j)
 	case FLOAT64:
 		return fmt.Sprint(v.AsFloat64())
 	case STRINGSLICE:
-		return fmt.Sprint(v.asStringSlice())
+		j, err := json.Marshal(v.asStringSlice())
+		if err != nil {
+			return fmt.Sprintf("invalid: %v", v.asStringSlice())
+		}
+		return string(j)
 	case STRING:
 		return v.stringly
 	default:

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

@@ -0,0 +1,3 @@
+# Baggage
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/baggage)](https://pkg.go.dev/go.opentelemetry.io/otel/baggage)

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 baggage // import "go.opentelemetry.io/otel/baggage"
 
@@ -18,8 +7,8 @@ import (
 	"errors"
 	"fmt"
 	"net/url"
-	"regexp"
 	"strings"
+	"unicode/utf8"
 
 	"go.opentelemetry.io/otel/internal/baggage"
 )
@@ -32,16 +21,6 @@ const (
 	listDelimiter     = ","
 	keyValueDelimiter = "="
 	propertyDelimiter = ";"
-
-	keyDef      = `([\x21\x23-\x27\x2A\x2B\x2D\x2E\x30-\x39\x41-\x5a\x5e-\x7a\x7c\x7e]+)`
-	valueDef    = `([\x21\x23-\x2b\x2d-\x3a\x3c-\x5B\x5D-\x7e]*)`
-	keyValueDef = `\s*` + keyDef + `\s*` + keyValueDelimiter + `\s*` + valueDef + `\s*`
-)
-
-var (
-	keyRe      = regexp.MustCompile(`^` + keyDef + `$`)
-	valueRe    = regexp.MustCompile(`^` + valueDef + `$`)
-	propertyRe = regexp.MustCompile(`^(?:\s*` + keyDef + `\s*|` + keyValueDef + `)$`)
 )
 
 var (
@@ -65,9 +44,15 @@ type Property struct {
 
 // NewKeyProperty returns a new Property for key.
 //
+// The passed key must be valid, non-empty UTF-8 string.
 // If key is invalid, an error will be returned.
+// However, the specific Propagators that are used to transmit baggage entries across
+// component boundaries may impose their own restrictions on Property key.
+// For example, the W3C Baggage specification restricts the Property keys to strings that
+// satisfy the token definition from RFC7230, Section 3.2.6.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as Property key.
 func NewKeyProperty(key string) (Property, error) {
-	if !keyRe.MatchString(key) {
+	if !validateBaggageName(key) {
 		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidKey, key)
 	}
 
@@ -77,12 +62,40 @@ func NewKeyProperty(key string) (Property, error) {
 
 // NewKeyValueProperty returns a new Property for key with value.
 //
-// If key or value are invalid, an error will be returned.
+// The passed key must be compliant with W3C Baggage specification.
+// The passed value must be percent-encoded as defined in W3C Baggage specification.
+//
+// Notice: Consider using [NewKeyValuePropertyRaw] instead
+// that does not require percent-encoding of the value.
 func NewKeyValueProperty(key, value string) (Property, error) {
-	if !keyRe.MatchString(key) {
+	if !validateKey(key) {
 		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidKey, key)
 	}
-	if !valueRe.MatchString(value) {
+
+	if !validateValue(value) {
+		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidValue, value)
+	}
+	decodedValue, err := url.PathUnescape(value)
+	if err != nil {
+		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidValue, value)
+	}
+	return NewKeyValuePropertyRaw(key, decodedValue)
+}
+
+// NewKeyValuePropertyRaw returns a new Property for key with value.
+//
+// The passed key must be valid, non-empty UTF-8 string.
+// The passed value must be valid UTF-8 string.
+// However, the specific Propagators that are used to transmit baggage entries across
+// component boundaries may impose their own restrictions on Property key.
+// For example, the W3C Baggage specification restricts the Property keys to strings that
+// satisfy the token definition from RFC7230, Section 3.2.6.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as Property key.
+func NewKeyValuePropertyRaw(key, value string) (Property, error) {
+	if !validateBaggageName(key) {
+		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidKey, key)
+	}
+	if !validateBaggageValue(value) {
 		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidValue, value)
 	}
 
@@ -106,20 +119,11 @@ func parseProperty(property string) (Property, error) {
 		return newInvalidProperty(), nil
 	}
 
-	match := propertyRe.FindStringSubmatch(property)
+	p, ok := parsePropertyInternal(property)
-	if len(match) != 4 {
+	if !ok {
 		return newInvalidProperty(), fmt.Errorf("%w: %q", errInvalidProperty, property)
 	}
 
-	var p Property
-	if match[1] != "" {
-		p.key = match[1]
-	} else {
-		p.key = match[2]
-		p.value = match[3]
-		p.hasValue = true
-	}
-
 	return p, nil
 }
 
@@ -130,15 +134,15 @@ func (p Property) validate() error {
 		return fmt.Errorf("invalid property: %w", err)
 	}
 
-	if !keyRe.MatchString(p.key) {
+	if !validateBaggageName(p.key) {
 		return errFunc(fmt.Errorf("%w: %q", errInvalidKey, p.key))
 	}
-	if p.hasValue && !valueRe.MatchString(p.value) {
-		return errFunc(fmt.Errorf("%w: %q", errInvalidValue, p.value))
-	}
 	if !p.hasValue && p.value != "" {
 		return errFunc(errors.New("inconsistent value"))
 	}
+	if p.hasValue && !validateBaggageValue(p.value) {
+		return errFunc(fmt.Errorf("%w: %q", errInvalidValue, p.value))
+	}
 	return nil
 }
 
@@ -154,11 +158,19 @@ func (p Property) Value() (string, bool) {
 	return p.value, p.hasValue
 }
 
-// String encodes Property into a string compliant with the W3C Baggage
+// String encodes Property into a header string compliant with the W3C Baggage
 // specification.
+// It would return empty string if the key is invalid with the W3C Baggage
+// specification. This could happen for a UTF-8 key, as it may contain
+// invalid characters.
 func (p Property) String() string {
+	//  W3C Baggage specification does not allow percent-encoded keys.
+	if !validateKey(p.key) {
+		return ""
+	}
+
 	if p.hasValue {
-		return fmt.Sprintf("%s%s%v", p.key, keyValueDelimiter, p.value)
+		return fmt.Sprintf("%s%s%v", p.key, keyValueDelimiter, valueEscape(p.value))
 	}
 	return p.key
 }
@@ -218,12 +230,17 @@ func (p properties) validate() error {
 	return nil
 }
 
-// String encodes properties into a string compliant with the W3C Baggage
+// String encodes properties into a header string compliant with the W3C Baggage
 // specification.
 func (p properties) String() string {
-	props := make([]string, len(p))
+	props := make([]string, 0, len(p))
-	for i, prop := range p {
+	for _, prop := range p {
-		props[i] = prop.String()
+		s := prop.String()
+
+		// Ignored empty properties.
+		if s != "" {
+			props = append(props, s)
+		}
 	}
 	return strings.Join(props, propertyDelimiter)
 }
@@ -240,11 +257,38 @@ type Member struct {
 	hasData bool
 }
 
-// NewMember returns a new Member from the passed arguments. The key will be
+// NewMember returns a new Member from the passed arguments.
-// used directly while the value will be url decoded after validation. An error
+//
-// is returned if the created Member would be invalid according to the W3C
+// The passed key must be compliant with W3C Baggage specification.
-// Baggage specification.
+// The passed value must be percent-encoded as defined in W3C Baggage specification.
+//
+// Notice: Consider using [NewMemberRaw] instead
+// that does not require percent-encoding of the value.
 func NewMember(key, value string, props ...Property) (Member, error) {
+	if !validateKey(key) {
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidKey, key)
+	}
+
+	if !validateValue(value) {
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
+	}
+	decodedValue, err := url.PathUnescape(value)
+	if err != nil {
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
+	}
+	return NewMemberRaw(key, decodedValue, props...)
+}
+
+// NewMemberRaw returns a new Member from the passed arguments.
+//
+// The passed key must be valid, non-empty UTF-8 string.
+// The passed value must be valid UTF-8 string.
+// However, the specific Propagators that are used to transmit baggage entries across
+// component boundaries may impose their own restrictions on baggage key.
+// For example, the W3C Baggage specification restricts the baggage keys to strings that
+// satisfy the token definition from RFC7230, Section 3.2.6.
+// For maximum compatibility, alphanumeric value are strongly recommended to be used as baggage key.
+func NewMemberRaw(key, value string, props ...Property) (Member, error) {
 	m := Member{
 		key:        key,
 		value:      value,
@@ -254,11 +298,6 @@ func NewMember(key, value string, props ...Property) (Member, error) {
 	if err := m.validate(); err != nil {
 		return newInvalidMember(), err
 	}
-	decodedValue, err := url.PathUnescape(value)
-	if err != nil {
-		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
-	}
-	m.value = decodedValue
 	return m, nil
 }
 
@@ -274,11 +313,7 @@ func parseMember(member string) (Member, error) {
 		return newInvalidMember(), fmt.Errorf("%w: %d", errMemberBytes, n)
 	}
 
-	var (
+	var props properties
-		key, value string
-		props      properties
-	)
-
 	keyValue, properties, found := strings.Cut(member, propertyDelimiter)
 	if found {
 		// Parse the member properties.
@@ -299,34 +334,61 @@ func parseMember(member string) (Member, error) {
 	}
 	// "Leading and trailing whitespaces are allowed but MUST be trimmed
 	// when converting the header into a data structure."
-	key = strings.TrimSpace(k)
+	key := strings.TrimSpace(k)
-	var err error
+	if !validateKey(key) {
-	value, err = url.PathUnescape(strings.TrimSpace(v))
-	if err != nil {
-		return newInvalidMember(), fmt.Errorf("%w: %q", err, value)
-	}
-	if !keyRe.MatchString(key) {
 		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidKey, key)
 	}
-	if !valueRe.MatchString(value) {
+
-		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, value)
+	rawVal := strings.TrimSpace(v)
+	if !validateValue(rawVal) {
+		return newInvalidMember(), fmt.Errorf("%w: %q", errInvalidValue, v)
 	}
 
+	// Decode a percent-encoded value.
+	unescapeVal, err := url.PathUnescape(rawVal)
+	if err != nil {
+		return newInvalidMember(), fmt.Errorf("%w: %w", errInvalidValue, err)
+	}
+
+	value := replaceInvalidUTF8Sequences(len(rawVal), unescapeVal)
 	return Member{key: key, value: value, properties: props, hasData: true}, nil
 }
 
+// replaceInvalidUTF8Sequences replaces invalid UTF-8 sequences with '<27>'.
+func replaceInvalidUTF8Sequences(cap int, unescapeVal string) string {
+	if utf8.ValidString(unescapeVal) {
+		return unescapeVal
+	}
+	// W3C baggage spec:
+	// https://github.com/w3c/baggage/blob/8c215efbeebd3fa4b1aceb937a747e56444f22f3/baggage/HTTP_HEADER_FORMAT.md?plain=1#L69
+
+	var b strings.Builder
+	b.Grow(cap)
+	for i := 0; i < len(unescapeVal); {
+		r, size := utf8.DecodeRuneInString(unescapeVal[i:])
+		if r == utf8.RuneError && size == 1 {
+			// Invalid UTF-8 sequence found, replace it with '<27>'
+			_, _ = b.WriteString("<22>")
+		} else {
+			_, _ = b.WriteRune(r)
+		}
+		i += size
+	}
+
+	return b.String()
+}
+
 // validate ensures m conforms to the W3C Baggage specification.
-// A key is just an ASCII string, but a value must be URL encoded UTF-8,
+// A key must be an ASCII string, returning an error otherwise.
-// returning an error otherwise.
 func (m Member) validate() error {
 	if !m.hasData {
 		return fmt.Errorf("%w: %q", errInvalidMember, m)
 	}
 
-	if !keyRe.MatchString(m.key) {
+	if !validateBaggageName(m.key) {
 		return fmt.Errorf("%w: %q", errInvalidKey, m.key)
 	}
-	if !valueRe.MatchString(m.value) {
+	if !validateBaggageValue(m.value) {
 		return fmt.Errorf("%w: %q", errInvalidValue, m.value)
 	}
 	return m.properties.validate()
@@ -341,13 +403,20 @@ func (m Member) Value() string { return m.value }
 // Properties returns a copy of the Member properties.
 func (m Member) Properties() []Property { return m.properties.Copy() }
 
-// String encodes Member into a string compliant with the W3C Baggage
+// String encodes Member into a header string compliant with the W3C Baggage
 // specification.
+// It would return empty string if the key is invalid with the W3C Baggage
+// specification. This could happen for a UTF-8 key, as it may contain
+// invalid characters.
 func (m Member) String() string {
-	// A key is just an ASCII string, but a value is URL encoded UTF-8.
+	//  W3C Baggage specification does not allow percent-encoded keys.
-	s := fmt.Sprintf("%s%s%s", m.key, keyValueDelimiter, url.QueryEscape(m.value))
+	if !validateKey(m.key) {
+		return ""
+	}
+
+	s := m.key + keyValueDelimiter + valueEscape(m.value)
 	if len(m.properties) > 0 {
-		s = fmt.Sprintf("%s%s%s", s, propertyDelimiter, m.properties.String())
+		s += propertyDelimiter + m.properties.String()
 	}
 	return s
 }
@@ -458,7 +527,7 @@ func (b Baggage) Member(key string) Member {
 }
 
 // Members returns all the baggage list-members.
-// The order of the returned list-members does not have significance.
+// The order of the returned list-members is not significant.
 //
 // The returned members are not validated, as we assume the validation happened
 // when they were added to the Baggage.
@@ -479,8 +548,8 @@ func (b Baggage) Members() []Member {
 	return members
 }
 
-// SetMember returns a copy the Baggage with the member included. If the
+// SetMember returns a copy of the Baggage with the member included. If the
-// baggage contains a Member with the same key the existing Member is
+// baggage contains a Member with the same key, the existing Member is
 // replaced.
 //
 // If member is invalid according to the W3C Baggage specification, an error
@@ -536,17 +605,414 @@ func (b Baggage) Len() int {
 	return len(b.list)
 }
 
-// String encodes Baggage into a string compliant with the W3C Baggage
+// String encodes Baggage into a header string compliant with the W3C Baggage
-// specification. The returned string will be invalid if the Baggage contains
+// specification.
-// any invalid list-members.
+// It would ignore members where the member key is invalid with the W3C Baggage
+// specification. This could happen for a UTF-8 key, as it may contain
+// invalid characters.
 func (b Baggage) String() string {
 	members := make([]string, 0, len(b.list))
 	for k, v := range b.list {
-		members = append(members, Member{
+		s := Member{
 			key:        k,
 			value:      v.Value,
 			properties: fromInternalProperties(v.Properties),
-		}.String())
+		}.String()
+
+		// Ignored empty members.
+		if s != "" {
+			members = append(members, s)
+		}
 	}
 	return strings.Join(members, listDelimiter)
 }
+
+// parsePropertyInternal attempts to decode a Property from the passed string.
+// It follows the spec at https://www.w3.org/TR/baggage/#definition.
+func parsePropertyInternal(s string) (p Property, ok bool) {
+	// For the entire function we will use "   key    =    value  " as an example.
+	// Attempting to parse the key.
+	// First skip spaces at the beginning "<   >key    =    value  " (they could be empty).
+	index := skipSpace(s, 0)
+
+	// Parse the key: "   <key>    =    value  ".
+	keyStart := index
+	keyEnd := index
+	for _, c := range s[keyStart:] {
+		if !validateKeyChar(c) {
+			break
+		}
+		keyEnd++
+	}
+
+	// If we couldn't find any valid key character,
+	// it means the key is either empty or invalid.
+	if keyStart == keyEnd {
+		return
+	}
+
+	// Skip spaces after the key: "   key<    >=    value  ".
+	index = skipSpace(s, keyEnd)
+
+	if index == len(s) {
+		// A key can have no value, like: "   key    ".
+		ok = true
+		p.key = s[keyStart:keyEnd]
+		return
+	}
+
+	// If we have not reached the end and we can't find the '=' delimiter,
+	// it means the property is invalid.
+	if s[index] != keyValueDelimiter[0] {
+		return
+	}
+
+	// Attempting to parse the value.
+	// Match: "   key    =<    >value  ".
+	index = skipSpace(s, index+1)
+
+	// Match the value string: "   key    =    <value>  ".
+	// A valid property can be: "   key    =".
+	// Therefore, we don't have to check if the value is empty.
+	valueStart := index
+	valueEnd := index
+	for _, c := range s[valueStart:] {
+		if !validateValueChar(c) {
+			break
+		}
+		valueEnd++
+	}
+
+	// Skip all trailing whitespaces: "   key    =    value<  >".
+	index = skipSpace(s, valueEnd)
+
+	// If after looking for the value and skipping whitespaces
+	// we have not reached the end, it means the property is
+	// invalid, something like: "   key    =    value  value1".
+	if index != len(s) {
+		return
+	}
+
+	// Decode a percent-encoded value.
+	rawVal := s[valueStart:valueEnd]
+	unescapeVal, err := url.PathUnescape(rawVal)
+	if err != nil {
+		return
+	}
+	value := replaceInvalidUTF8Sequences(len(rawVal), unescapeVal)
+
+	ok = true
+	p.key = s[keyStart:keyEnd]
+	p.hasValue = true
+
+	p.value = value
+	return
+}
+
+func skipSpace(s string, offset int) int {
+	i := offset
+	for ; i < len(s); i++ {
+		c := s[i]
+		if c != ' ' && c != '\t' {
+			break
+		}
+	}
+	return i
+}
+
+var safeKeyCharset = [utf8.RuneSelf]bool{
+	// 0x23 to 0x27
+	'#':  true,
+	'$':  true,
+	'%':  true,
+	'&':  true,
+	'\'': true,
+
+	// 0x30 to 0x39
+	'0': true,
+	'1': true,
+	'2': true,
+	'3': true,
+	'4': true,
+	'5': true,
+	'6': true,
+	'7': true,
+	'8': true,
+	'9': true,
+
+	// 0x41 to 0x5a
+	'A': true,
+	'B': true,
+	'C': true,
+	'D': true,
+	'E': true,
+	'F': true,
+	'G': true,
+	'H': true,
+	'I': true,
+	'J': true,
+	'K': true,
+	'L': true,
+	'M': true,
+	'N': true,
+	'O': true,
+	'P': true,
+	'Q': true,
+	'R': true,
+	'S': true,
+	'T': true,
+	'U': true,
+	'V': true,
+	'W': true,
+	'X': true,
+	'Y': true,
+	'Z': true,
+
+	// 0x5e to 0x7a
+	'^': true,
+	'_': true,
+	'`': true,
+	'a': true,
+	'b': true,
+	'c': true,
+	'd': true,
+	'e': true,
+	'f': true,
+	'g': true,
+	'h': true,
+	'i': true,
+	'j': true,
+	'k': true,
+	'l': true,
+	'm': true,
+	'n': true,
+	'o': true,
+	'p': true,
+	'q': true,
+	'r': true,
+	's': true,
+	't': true,
+	'u': true,
+	'v': true,
+	'w': true,
+	'x': true,
+	'y': true,
+	'z': true,
+
+	// remainder
+	'!': true,
+	'*': true,
+	'+': true,
+	'-': true,
+	'.': true,
+	'|': true,
+	'~': true,
+}
+
+// validateBaggageName checks if the string is a valid OpenTelemetry Baggage name.
+// Baggage name is a valid, non-empty UTF-8 string.
+func validateBaggageName(s string) bool {
+	if len(s) == 0 {
+		return false
+	}
+
+	return utf8.ValidString(s)
+}
+
+// validateBaggageValue checks if the string is a valid OpenTelemetry Baggage value.
+// Baggage value is a valid UTF-8 strings.
+// Empty string is also a valid UTF-8 string.
+func validateBaggageValue(s string) bool {
+	return utf8.ValidString(s)
+}
+
+// validateKey checks if the string is a valid W3C Baggage key.
+func validateKey(s string) bool {
+	if len(s) == 0 {
+		return false
+	}
+
+	for _, c := range s {
+		if !validateKeyChar(c) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func validateKeyChar(c int32) bool {
+	return c >= 0 && c < int32(utf8.RuneSelf) && safeKeyCharset[c]
+}
+
+// validateValue checks if the string is a valid W3C Baggage value.
+func validateValue(s string) bool {
+	for _, c := range s {
+		if !validateValueChar(c) {
+			return false
+		}
+	}
+
+	return true
+}
+
+var safeValueCharset = [utf8.RuneSelf]bool{
+	'!': true, // 0x21
+
+	// 0x23 to 0x2b
+	'#':  true,
+	'$':  true,
+	'%':  true,
+	'&':  true,
+	'\'': true,
+	'(':  true,
+	')':  true,
+	'*':  true,
+	'+':  true,
+
+	// 0x2d to 0x3a
+	'-': true,
+	'.': true,
+	'/': true,
+	'0': true,
+	'1': true,
+	'2': true,
+	'3': true,
+	'4': true,
+	'5': true,
+	'6': true,
+	'7': true,
+	'8': true,
+	'9': true,
+	':': true,
+
+	// 0x3c to 0x5b
+	'<': true, // 0x3C
+	'=': true, // 0x3D
+	'>': true, // 0x3E
+	'?': true, // 0x3F
+	'@': true, // 0x40
+	'A': true, // 0x41
+	'B': true, // 0x42
+	'C': true, // 0x43
+	'D': true, // 0x44
+	'E': true, // 0x45
+	'F': true, // 0x46
+	'G': true, // 0x47
+	'H': true, // 0x48
+	'I': true, // 0x49
+	'J': true, // 0x4A
+	'K': true, // 0x4B
+	'L': true, // 0x4C
+	'M': true, // 0x4D
+	'N': true, // 0x4E
+	'O': true, // 0x4F
+	'P': true, // 0x50
+	'Q': true, // 0x51
+	'R': true, // 0x52
+	'S': true, // 0x53
+	'T': true, // 0x54
+	'U': true, // 0x55
+	'V': true, // 0x56
+	'W': true, // 0x57
+	'X': true, // 0x58
+	'Y': true, // 0x59
+	'Z': true, // 0x5A
+	'[': true, // 0x5B
+
+	// 0x5d to 0x7e
+	']': true, // 0x5D
+	'^': true, // 0x5E
+	'_': true, // 0x5F
+	'`': true, // 0x60
+	'a': true, // 0x61
+	'b': true, // 0x62
+	'c': true, // 0x63
+	'd': true, // 0x64
+	'e': true, // 0x65
+	'f': true, // 0x66
+	'g': true, // 0x67
+	'h': true, // 0x68
+	'i': true, // 0x69
+	'j': true, // 0x6A
+	'k': true, // 0x6B
+	'l': true, // 0x6C
+	'm': true, // 0x6D
+	'n': true, // 0x6E
+	'o': true, // 0x6F
+	'p': true, // 0x70
+	'q': true, // 0x71
+	'r': true, // 0x72
+	's': true, // 0x73
+	't': true, // 0x74
+	'u': true, // 0x75
+	'v': true, // 0x76
+	'w': true, // 0x77
+	'x': true, // 0x78
+	'y': true, // 0x79
+	'z': true, // 0x7A
+	'{': true, // 0x7B
+	'|': true, // 0x7C
+	'}': true, // 0x7D
+	'~': true, // 0x7E
+}
+
+func validateValueChar(c int32) bool {
+	return c >= 0 && c < int32(utf8.RuneSelf) && safeValueCharset[c]
+}
+
+// valueEscape escapes the string so it can be safely placed inside a baggage value,
+// replacing special characters with %XX sequences as needed.
+//
+// The implementation is based on:
+// https://github.com/golang/go/blob/f6509cf5cdbb5787061b784973782933c47f1782/src/net/url/url.go#L285.
+func valueEscape(s string) string {
+	hexCount := 0
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if shouldEscape(c) {
+			hexCount++
+		}
+	}
+
+	if hexCount == 0 {
+		return s
+	}
+
+	var buf [64]byte
+	var t []byte
+
+	required := len(s) + 2*hexCount
+	if required <= len(buf) {
+		t = buf[:required]
+	} else {
+		t = make([]byte, required)
+	}
+
+	j := 0
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if shouldEscape(s[i]) {
+			const upperhex = "0123456789ABCDEF"
+			t[j] = '%'
+			t[j+1] = upperhex[c>>4]
+			t[j+2] = upperhex[c&15]
+			j += 3
+		} else {
+			t[j] = c
+			j++
+		}
+	}
+
+	return string(t)
+}
+
+// shouldEscape returns true if the specified byte should be escaped when
+// appearing in a baggage value string.
+func shouldEscape(c byte) bool {
+	if c == '%' {
+		// The percent character must be encoded so that percent-encoding can work.
+		return true
+	}
+	return !validateValueChar(int32(c))
+}

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 baggage // import "go.opentelemetry.io/otel/baggage"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 baggage provides functionality for storing and retrieving

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

@@ -0,0 +1,3 @@
+# Codes
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/codes)](https://pkg.go.dev/go.opentelemetry.io/otel/codes)

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 codes // import "go.opentelemetry.io/otel/codes"
 
@@ -94,7 +83,7 @@ func (c *Code) UnmarshalJSON(b []byte) error {
 				return fmt.Errorf("invalid code: %q", ci)
 			}
 
-			*c = Code(ci)
+			*c = Code(ci) // nolint: gosec  // Bit size of 32 check above.
 			return nil
 		}
 		return fmt.Errorf("invalid code: %q", string(b))

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 codes defines the canonical error codes used by OpenTelemetry.

vendor/go.opentelemetry.io/otel/doc.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel provides global access to the OpenTelemetry API. The subpackages of
@@ -22,12 +11,14 @@ transmitted anywhere. An implementation of the OpenTelemetry SDK, like the
 default SDK implementation (go.opentelemetry.io/otel/sdk), and associated
 exporters are used to process and transport this data.
 
-To read the getting started guide, see https://opentelemetry.io/docs/go/getting-started/.
+To read the getting started guide, see https://opentelemetry.io/docs/languages/go/getting-started/.
 
 To read more about tracing, see go.opentelemetry.io/otel/trace.
 
 To read more about metrics, see go.opentelemetry.io/otel/metric.
 
+To read more about logs, see go.opentelemetry.io/otel/log.
+
 To read more about propagation, see go.opentelemetry.io/otel/propagation and
 go.opentelemetry.io/otel/baggage.
 */

vendor/go.opentelemetry.io/otel/error_handler.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel // import "go.opentelemetry.io/otel"
 

vendor/go.opentelemetry.io/otel/get_main_pkgs.sh

@@ -1,18 +1,7 @@
 #!/usr/bin/env bash
 
 # Copyright The OpenTelemetry Authors
-#
+# SPDX-License-Identifier: Apache-2.0
-# 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.
 
 set -euo pipefail
 

vendor/go.opentelemetry.io/otel/handler.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel // import "go.opentelemetry.io/otel"
 
@@ -18,12 +7,8 @@ import (
 	"go.opentelemetry.io/otel/internal/global"
 )
 
-var (
+// Compile-time check global.ErrDelegator implements ErrorHandler.
-	// Compile-time check global.ErrDelegator implements ErrorHandler.
+var _ ErrorHandler = (*global.ErrDelegator)(nil)
-	_ ErrorHandler = (*global.ErrDelegator)(nil)
-	// Compile-time check global.ErrLogger implements ErrorHandler.
-	_ ErrorHandler = (*global.ErrLogger)(nil)
-)
 
 // GetErrorHandler returns the global ErrorHandler instance.
 //
@@ -44,5 +29,5 @@ func GetErrorHandler() ErrorHandler { return global.GetErrorHandler() }
 // delegate errors to h.
 func SetErrorHandler(h ErrorHandler) { global.SetErrorHandler(h) }
 
-// Handle is a convenience function for ErrorHandler().Handle(err).
+// Handle is a convenience function for GetErrorHandler().Handle(err).
-func Handle(err error) { global.Handle(err) }
+func Handle(err error) { global.GetErrorHandler().Handle(err) }

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 attribute provide several helper functions for some commonly used
@@ -25,33 +14,33 @@ import (
 // BoolSliceValue converts a bool slice into an array with same elements as slice.
 func BoolSliceValue(v []bool) interface{} {
 	var zero bool
-	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero)))
+	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
-	copy(cp.Elem().Slice(0, len(v)).Interface().([]bool), v)
+	reflect.Copy(cp, reflect.ValueOf(v))
-	return cp.Elem().Interface()
+	return cp.Interface()
 }
 
 // Int64SliceValue converts an int64 slice into an array with same elements as slice.
 func Int64SliceValue(v []int64) interface{} {
 	var zero int64
-	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero)))
+	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
-	copy(cp.Elem().Slice(0, len(v)).Interface().([]int64), v)
+	reflect.Copy(cp, reflect.ValueOf(v))
-	return cp.Elem().Interface()
+	return cp.Interface()
 }
 
 // Float64SliceValue converts a float64 slice into an array with same elements as slice.
 func Float64SliceValue(v []float64) interface{} {
 	var zero float64
-	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero)))
+	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
-	copy(cp.Elem().Slice(0, len(v)).Interface().([]float64), v)
+	reflect.Copy(cp, reflect.ValueOf(v))
-	return cp.Elem().Interface()
+	return cp.Interface()
 }
 
 // StringSliceValue converts a string slice into an array with same elements as slice.
 func StringSliceValue(v []string) interface{} {
 	var zero string
-	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero)))
+	cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
-	copy(cp.Elem().Slice(0, len(v)).Interface().([]string), v)
+	reflect.Copy(cp, reflect.ValueOf(v))
-	return cp.Elem().Interface()
+	return cp.Interface()
 }
 
 // AsBoolSlice converts a bool array into a slice into with same elements as array.

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 baggage provides base types and functionality to store and retrieve

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 baggage // import "go.opentelemetry.io/otel/internal/baggage"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 internal // import "go.opentelemetry.io/otel/internal"
 

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

@@ -1,38 +1,13 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
 import (
 	"log"
-	"os"
 	"sync/atomic"
 )
 
-var (
-	// GlobalErrorHandler provides an ErrorHandler that can be used
-	// throughout an OpenTelemetry instrumented project. When a user
-	// specified ErrorHandler is registered (`SetErrorHandler`) all calls to
-	// `Handle` and will be delegated to the registered ErrorHandler.
-	GlobalErrorHandler = defaultErrorHandler()
-
-	// Compile-time check that delegator implements ErrorHandler.
-	_ ErrorHandler = (*ErrDelegator)(nil)
-	// Compile-time check that errLogger implements ErrorHandler.
-	_ ErrorHandler = (*ErrLogger)(nil)
-)
-
 // ErrorHandler handles irremediable events.
 type ErrorHandler interface {
 	// Handle handles any error deemed irremediable by an OpenTelemetry
@@ -44,59 +19,18 @@ type ErrDelegator struct {
 	delegate atomic.Pointer[ErrorHandler]
 }
 
-func (d *ErrDelegator) Handle(err error) {
+// Compile-time check that delegator implements ErrorHandler.
-	d.getDelegate().Handle(err)
+var _ ErrorHandler = (*ErrDelegator)(nil)
-}
 
-func (d *ErrDelegator) getDelegate() ErrorHandler {
+func (d *ErrDelegator) Handle(err error) {
-	return *d.delegate.Load()
+	if eh := d.delegate.Load(); eh != nil {
+		(*eh).Handle(err)
+		return
+	}
+	log.Print(err)
 }
 
 // setDelegate sets the ErrorHandler delegate.
 func (d *ErrDelegator) setDelegate(eh ErrorHandler) {
 	d.delegate.Store(&eh)
 }
-
-func defaultErrorHandler() *ErrDelegator {
-	d := &ErrDelegator{}
-	d.setDelegate(&ErrLogger{l: log.New(os.Stderr, "", log.LstdFlags)})
-	return d
-}
-
-// ErrLogger logs errors if no delegate is set, otherwise they are delegated.
-type ErrLogger struct {
-	l *log.Logger
-}
-
-// Handle logs err if no delegate is set, otherwise it is delegated.
-func (h *ErrLogger) Handle(err error) {
-	h.l.Print(err)
-}
-
-// GetErrorHandler returns the global ErrorHandler instance.
-//
-// The default ErrorHandler instance returned will log all errors to STDERR
-// until an override ErrorHandler is set with SetErrorHandler. All
-// ErrorHandler returned prior to this will automatically forward errors to
-// the set instance instead of logging.
-//
-// Subsequent calls to SetErrorHandler after the first will not forward errors
-// to the new ErrorHandler for prior returned instances.
-func GetErrorHandler() ErrorHandler {
-	return GlobalErrorHandler
-}
-
-// SetErrorHandler sets the global ErrorHandler to h.
-//
-// The first time this is called all ErrorHandler previously returned from
-// GetErrorHandler will send errors to h instead of the default logging
-// ErrorHandler. Subsequent calls will set the global ErrorHandler, but not
-// delegate errors to h.
-func SetErrorHandler(h ErrorHandler) {
-	GlobalErrorHandler.setDelegate(h)
-}
-
-// Handle is a convenience function for ErrorHandler().Handle(err).
-func Handle(err error) {
-	GetErrorHandler().Handle(err)
-}

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
@@ -292,6 +281,32 @@ func (i *sfHistogram) Record(ctx context.Context, x float64, opts ...metric.Reco
 	}
 }
 
+type sfGauge struct {
+	embedded.Float64Gauge
+
+	name string
+	opts []metric.Float64GaugeOption
+
+	delegate atomic.Value // metric.Float64Gauge
+}
+
+var _ metric.Float64Gauge = (*sfGauge)(nil)
+
+func (i *sfGauge) setDelegate(m metric.Meter) {
+	ctr, err := m.Float64Gauge(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *sfGauge) Record(ctx context.Context, x float64, opts ...metric.RecordOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Float64Gauge).Record(ctx, x, opts...)
+	}
+}
+
 type siCounter struct {
 	embedded.Int64Counter
 
@@ -369,3 +384,29 @@ func (i *siHistogram) Record(ctx context.Context, x int64, opts ...metric.Record
 		ctr.(metric.Int64Histogram).Record(ctx, x, opts...)
 	}
 }
+
+type siGauge struct {
+	embedded.Int64Gauge
+
+	name string
+	opts []metric.Int64GaugeOption
+
+	delegate atomic.Value // metric.Int64Gauge
+}
+
+var _ metric.Int64Gauge = (*siGauge)(nil)
+
+func (i *siGauge) setDelegate(m metric.Meter) {
+	ctr, err := m.Int64Gauge(i.name, i.opts...)
+	if err != nil {
+		GetErrorHandler().Handle(err)
+		return
+	}
+	i.delegate.Store(ctr)
+}
+
+func (i *siGauge) Record(ctx context.Context, x int64, opts ...metric.RecordOption) {
+	if ctr := i.delegate.Load(); ctr != nil {
+		ctr.(metric.Int64Gauge).Record(ctx, x, opts...)
+	}
+}

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
@@ -23,17 +12,20 @@ import (
 	"github.com/go-logr/stdr"
 )
 
-// globalLogger is the logging interface used within the otel api and sdk provide details of the internals.
+// globalLogger holds a reference to the [logr.Logger] used within
+// go.opentelemetry.io/otel.
 //
 // The default logger uses stdr which is backed by the standard `log.Logger`
 // interface. This logger will only show messages at the Error Level.
-var globalLogger atomic.Pointer[logr.Logger]
+var globalLogger = func() *atomic.Pointer[logr.Logger] {
+	l := stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile))
 
-func init() {
+	p := new(atomic.Pointer[logr.Logger])
-	SetLogger(stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)))
+	p.Store(&l)
-}
+	return p
+}()
 
-// SetLogger overrides the globalLogger with l.
+// SetLogger sets the global Logger to l.
 //
 // To see Warn messages use a logger with `l.V(1).Enabled() == true`
 // To see Info messages use a logger with `l.V(4).Enabled() == true`
@@ -42,28 +34,29 @@ func SetLogger(l logr.Logger) {
 	globalLogger.Store(&l)
 }
 
-func getLogger() logr.Logger {
+// GetLogger returns the global logger.
+func GetLogger() logr.Logger {
 	return *globalLogger.Load()
 }
 
 // Info prints messages about the general state of the API or SDK.
 // This should usually be less than 5 messages a minute.
 func Info(msg string, keysAndValues ...interface{}) {
-	getLogger().V(4).Info(msg, keysAndValues...)
+	GetLogger().V(4).Info(msg, keysAndValues...)
 }
 
 // Error prints messages about exceptional states of the API or SDK.
 func Error(err error, msg string, keysAndValues ...interface{}) {
-	getLogger().Error(err, msg, keysAndValues...)
+	GetLogger().Error(err, msg, keysAndValues...)
 }
 
 // Debug prints messages about all internal changes in the API or SDK.
 func Debug(msg string, keysAndValues ...interface{}) {
-	getLogger().V(8).Info(msg, keysAndValues...)
+	GetLogger().V(8).Info(msg, keysAndValues...)
 }
 
 // Warn prints messages about warnings in the API or SDK.
 // Not an error but is likely more important than an informational event.
 func Warn(msg string, keysAndValues ...interface{}) {
-	getLogger().V(1).Info(msg, keysAndValues...)
+	GetLogger().V(1).Info(msg, keysAndValues...)
 }

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

@@ -1,23 +1,12 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
 import (
 	"container/list"
+	"reflect"
 	"sync"
-	"sync/atomic"
 
 	"go.opentelemetry.io/otel/metric"
 	"go.opentelemetry.io/otel/metric/embedded"
@@ -76,6 +65,7 @@ func (p *meterProvider) Meter(name string, opts ...metric.MeterOption) metric.Me
 	key := il{
 		name:    name,
 		version: c.InstrumentationVersion(),
+		schema:  c.SchemaURL(),
 	}
 
 	if p.meters == nil {
@@ -86,7 +76,7 @@ func (p *meterProvider) Meter(name string, opts ...metric.MeterOption) metric.Me
 		return val
 	}
 
-	t := &meter{name: name, opts: opts}
+	t := &meter{name: name, opts: opts, instruments: make(map[instID]delegatedInstrument)}
 	p.meters[key] = t
 	return t
 }
@@ -102,17 +92,29 @@ type meter struct {
 	opts []metric.MeterOption
 
 	mtx         sync.Mutex
-	instruments []delegatedInstrument
+	instruments map[instID]delegatedInstrument
 
 	registry list.List
 
-	delegate atomic.Value // metric.Meter
+	delegate metric.Meter
 }
 
 type delegatedInstrument interface {
 	setDelegate(metric.Meter)
 }
 
+// instID are the identifying properties of a instrument.
+type instID struct {
+	// name is the name of the stream.
+	name string
+	// description is the description of the stream.
+	description string
+	// kind defines the functional group of the instrument.
+	kind reflect.Type
+	// unit is the unit of the stream.
+	unit string
+}
+
 // setDelegate configures m to delegate all Meter functionality to Meters
 // created by provider.
 //
@@ -120,19 +122,21 @@ type delegatedInstrument interface {
 //
 // It is guaranteed by the caller that this happens only once.
 func (m *meter) setDelegate(provider metric.MeterProvider) {
-	meter := provider.Meter(m.name, m.opts...)
-	m.delegate.Store(meter)
-
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
+	meter := provider.Meter(m.name, m.opts...)
+	m.delegate = meter
+
 	for _, inst := range m.instruments {
 		inst.setDelegate(meter)
 	}
 
-	for e := m.registry.Front(); e != nil; e = e.Next() {
+	var n *list.Element
+	for e := m.registry.Front(); e != nil; e = n {
 		r := e.Value.(*registration)
 		r.setDelegate(meter)
+		n = e.Next()
 		m.registry.Remove(e)
 	}
 
@@ -141,147 +145,337 @@ func (m *meter) setDelegate(provider metric.MeterProvider) {
 }
 
 func (m *meter) Int64Counter(name string, options ...metric.Int64CounterOption) (metric.Int64Counter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64Counter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64Counter(name, options...)
+	}
+
+	cfg := metric.NewInt64CounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*siCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64Counter), nil
+	}
 	i := &siCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Int64UpDownCounter(name string, options ...metric.Int64UpDownCounterOption) (metric.Int64UpDownCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64UpDownCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64UpDownCounter(name, options...)
+	}
+
+	cfg := metric.NewInt64UpDownCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*siUpDownCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64UpDownCounter), nil
+	}
 	i := &siUpDownCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Int64Histogram(name string, options ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64Histogram(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64Histogram(name, options...)
+	}
+
+	cfg := metric.NewInt64HistogramConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*siHistogram)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64Histogram), nil
+	}
 	i := &siHistogram{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
+	return i, nil
+}
+
+func (m *meter) Int64Gauge(name string, options ...metric.Int64GaugeOption) (metric.Int64Gauge, error) {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64Gauge(name, options...)
+	}
+
+	cfg := metric.NewInt64GaugeConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*siGauge)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64Gauge), nil
+	}
+	i := &siGauge{name: name, opts: options}
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Int64ObservableCounter(name string, options ...metric.Int64ObservableCounterOption) (metric.Int64ObservableCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64ObservableCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64ObservableCounter(name, options...)
+	}
+
+	cfg := metric.NewInt64ObservableCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*aiCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64ObservableCounter), nil
+	}
 	i := &aiCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Int64ObservableUpDownCounter(name string, options ...metric.Int64ObservableUpDownCounterOption) (metric.Int64ObservableUpDownCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64ObservableUpDownCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64ObservableUpDownCounter(name, options...)
+	}
+
+	cfg := metric.NewInt64ObservableUpDownCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*aiUpDownCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64ObservableUpDownCounter), nil
+	}
 	i := &aiUpDownCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Int64ObservableGauge(name string, options ...metric.Int64ObservableGaugeOption) (metric.Int64ObservableGauge, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Int64ObservableGauge(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Int64ObservableGauge(name, options...)
+	}
+
+	cfg := metric.NewInt64ObservableGaugeConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*aiGauge)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Int64ObservableGauge), nil
+	}
 	i := &aiGauge{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64Counter(name string, options ...metric.Float64CounterOption) (metric.Float64Counter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64Counter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64Counter(name, options...)
+	}
+
+	cfg := metric.NewFloat64CounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*sfCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64Counter), nil
+	}
 	i := &sfCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64UpDownCounter(name string, options ...metric.Float64UpDownCounterOption) (metric.Float64UpDownCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64UpDownCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64UpDownCounter(name, options...)
+	}
+
+	cfg := metric.NewFloat64UpDownCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*sfUpDownCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64UpDownCounter), nil
+	}
 	i := &sfUpDownCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64Histogram(name string, options ...metric.Float64HistogramOption) (metric.Float64Histogram, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64Histogram(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64Histogram(name, options...)
+	}
+
+	cfg := metric.NewFloat64HistogramConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*sfHistogram)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64Histogram), nil
+	}
 	i := &sfHistogram{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
+	return i, nil
+}
+
+func (m *meter) Float64Gauge(name string, options ...metric.Float64GaugeOption) (metric.Float64Gauge, error) {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64Gauge(name, options...)
+	}
+
+	cfg := metric.NewFloat64GaugeConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*sfGauge)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64Gauge), nil
+	}
+	i := &sfGauge{name: name, opts: options}
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64ObservableCounter(name string, options ...metric.Float64ObservableCounterOption) (metric.Float64ObservableCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64ObservableCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64ObservableCounter(name, options...)
+	}
+
+	cfg := metric.NewFloat64ObservableCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*afCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64ObservableCounter), nil
+	}
 	i := &afCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64ObservableUpDownCounter(name string, options ...metric.Float64ObservableUpDownCounterOption) (metric.Float64ObservableUpDownCounter, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64ObservableUpDownCounter(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64ObservableUpDownCounter(name, options...)
+	}
+
+	cfg := metric.NewFloat64ObservableUpDownCounterConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*afUpDownCounter)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64ObservableUpDownCounter), nil
+	}
 	i := &afUpDownCounter{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 func (m *meter) Float64ObservableGauge(name string, options ...metric.Float64ObservableGaugeOption) (metric.Float64ObservableGauge, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		return del.Float64ObservableGauge(name, options...)
-	}
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
+
+	if m.delegate != nil {
+		return m.delegate.Float64ObservableGauge(name, options...)
+	}
+
+	cfg := metric.NewFloat64ObservableGaugeConfig(options...)
+	id := instID{
+		name:        name,
+		kind:        reflect.TypeOf((*afGauge)(nil)),
+		description: cfg.Description(),
+		unit:        cfg.Unit(),
+	}
+	if f, ok := m.instruments[id]; ok {
+		return f.(metric.Float64ObservableGauge), nil
+	}
 	i := &afGauge{name: name, opts: options}
-	m.instruments = append(m.instruments, i)
+	m.instruments[id] = i
 	return i, nil
 }
 
 // RegisterCallback captures the function that will be called during Collect.
 func (m *meter) RegisterCallback(f metric.Callback, insts ...metric.Observable) (metric.Registration, error) {
-	if del, ok := m.delegate.Load().(metric.Meter); ok {
-		insts = unwrapInstruments(insts)
-		return del.RegisterCallback(f, insts...)
-	}
-
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
 
+	if m.delegate != nil {
+		insts = unwrapInstruments(insts)
+		return m.delegate.RegisterCallback(f, insts...)
+	}
+
 	reg := &registration{instruments: insts, function: f}
 	e := m.registry.PushBack(reg)
 	reg.unreg = func() error {
@@ -335,6 +529,7 @@ func (c *registration) setDelegate(m metric.Meter) {
 	reg, err := m.RegisterCallback(c.function, insts...)
 	if err != nil {
 		GetErrorHandler().Handle(err)
+		return
 	}
 
 	c.unreg = reg.Unregister

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
@@ -25,6 +14,10 @@ import (
 )
 
 type (
+	errorHandlerHolder struct {
+		eh ErrorHandler
+	}
+
 	tracerProviderHolder struct {
 		tp trace.TracerProvider
 	}
@@ -39,15 +32,59 @@ type (
 )
 
 var (
+	globalErrorHandler  = defaultErrorHandler()
 	globalTracer        = defaultTracerValue()
 	globalPropagators   = defaultPropagatorsValue()
 	globalMeterProvider = defaultMeterProvider()
 
+	delegateErrorHandlerOnce      sync.Once
 	delegateTraceOnce             sync.Once
 	delegateTextMapPropagatorOnce sync.Once
 	delegateMeterOnce             sync.Once
 )
 
+// GetErrorHandler returns the global ErrorHandler instance.
+//
+// The default ErrorHandler instance returned will log all errors to STDERR
+// until an override ErrorHandler is set with SetErrorHandler. All
+// ErrorHandler returned prior to this will automatically forward errors to
+// the set instance instead of logging.
+//
+// Subsequent calls to SetErrorHandler after the first will not forward errors
+// to the new ErrorHandler for prior returned instances.
+func GetErrorHandler() ErrorHandler {
+	return globalErrorHandler.Load().(errorHandlerHolder).eh
+}
+
+// SetErrorHandler sets the global ErrorHandler to h.
+//
+// The first time this is called all ErrorHandler previously returned from
+// GetErrorHandler will send errors to h instead of the default logging
+// ErrorHandler. Subsequent calls will set the global ErrorHandler, but not
+// delegate errors to h.
+func SetErrorHandler(h ErrorHandler) {
+	current := GetErrorHandler()
+
+	if _, cOk := current.(*ErrDelegator); cOk {
+		if _, ehOk := h.(*ErrDelegator); ehOk && current == h {
+			// Do not assign to the delegate of the default ErrDelegator to be
+			// itself.
+			Error(
+				errors.New("no ErrorHandler delegate configured"),
+				"ErrorHandler remains its current value.",
+			)
+			return
+		}
+	}
+
+	delegateErrorHandlerOnce.Do(func() {
+		if def, ok := current.(*ErrDelegator); ok {
+			def.setDelegate(h)
+		}
+	})
+	globalErrorHandler.Store(errorHandlerHolder{eh: h})
+}
+
 // TracerProvider is the internal implementation for global.TracerProvider.
 func TracerProvider() trace.TracerProvider {
 	return globalTracer.Load().(tracerProviderHolder).tp
@@ -63,7 +100,7 @@ func SetTracerProvider(tp trace.TracerProvider) {
 			// to itself.
 			Error(
 				errors.New("no delegate configured in tracer provider"),
-				"Setting tracer provider to it's current value. No delegate will be configured",
+				"Setting tracer provider to its current value. No delegate will be configured",
 			)
 			return
 		}
@@ -92,7 +129,7 @@ func SetTextMapPropagator(p propagation.TextMapPropagator) {
 			// delegate to itself.
 			Error(
 				errors.New("no delegate configured in text map propagator"),
-				"Setting text map propagator to it's current value. No delegate will be configured",
+				"Setting text map propagator to its current value. No delegate will be configured",
 			)
 			return
 		}
@@ -123,7 +160,7 @@ func SetMeterProvider(mp metric.MeterProvider) {
 			// to itself.
 			Error(
 				errors.New("no delegate configured in meter provider"),
-				"Setting meter provider to it's current value. No delegate will be configured",
+				"Setting meter provider to its current value. No delegate will be configured",
 			)
 			return
 		}
@@ -137,6 +174,12 @@ func SetMeterProvider(mp metric.MeterProvider) {
 	globalMeterProvider.Store(meterProviderHolder{mp: mp})
 }
 
+func defaultErrorHandler() *atomic.Value {
+	v := &atomic.Value{}
+	v.Store(errorHandlerHolder{eh: &ErrDelegator{}})
+	return v
+}
+
 func defaultTracerValue() *atomic.Value {
 	v := &atomic.Value{}
 	v.Store(tracerProviderHolder{tp: &tracerProvider{}})

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 global // import "go.opentelemetry.io/otel/internal/global"
 
@@ -97,6 +86,7 @@ func (p *tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.T
 	key := il{
 		name:    name,
 		version: c.InstrumentationVersion(),
+		schema:  c.SchemaURL(),
 	}
 
 	if p.tracers == nil {
@@ -112,10 +102,7 @@ func (p *tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.T
 	return t
 }
 
-type il struct {
+type il struct{ name, version, schema string }
-	name    string
-	version string
-}
 
 // tracer is a placeholder for a trace.Tracer.
 //
@@ -193,6 +180,9 @@ func (nonRecordingSpan) RecordError(error, ...trace.EventOption) {}
 // AddEvent does nothing.
 func (nonRecordingSpan) AddEvent(string, ...trace.EventOption) {}
 
+// AddLink does nothing.
+func (nonRecordingSpan) AddLink(trace.Link) {}
+
 // SetName does nothing.
 func (nonRecordingSpan) SetName(string) {}
 

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 internal // import "go.opentelemetry.io/otel/internal"
 
@@ -31,11 +20,13 @@ func RawToBool(r uint64) bool {
 }
 
 func Int64ToRaw(i int64) uint64 {
-	return uint64(i)
+	// Assumes original was a valid int64 (overflow not checked).
+	return uint64(i) // nolint: gosec
 }
 
 func RawToInt64(r uint64) int64 {
-	return int64(r)
+	// Assumes original was a valid int64 (overflow not checked).
+	return int64(r) // nolint: gosec
 }
 
 func Float64ToRaw(f float64) uint64 {
@@ -47,9 +38,11 @@ func RawToFloat64(r uint64) float64 {
 }
 
 func RawPtrToFloat64Ptr(r *uint64) *float64 {
-	return (*float64)(unsafe.Pointer(r))
+	// Assumes original was a valid *float64 (overflow not checked).
+	return (*float64)(unsafe.Pointer(r)) // nolint: gosec
 }
 
 func RawPtrToInt64Ptr(r *uint64) *int64 {
-	return (*int64)(unsafe.Pointer(r))
+	// Assumes original was a valid *int64 (overflow not checked).
+	return (*int64)(unsafe.Pointer(r)) // nolint: gosec
 }

vendor/go.opentelemetry.io/otel/internal_logging.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel // import "go.opentelemetry.io/otel"
 

vendor/go.opentelemetry.io/otel/metric.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel // import "go.opentelemetry.io/otel"
 

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

@@ -0,0 +1,3 @@
+# Metric API
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/metric)](https://pkg.go.dev/go.opentelemetry.io/otel/metric)

vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -50,7 +39,7 @@ type Float64ObservableCounter interface {
 }
 
 // Float64ObservableCounterConfig contains options for asynchronous counter
-// instruments that record int64 values.
+// instruments that record float64 values.
 type Float64ObservableCounterConfig struct {
 	description string
 	unit        string
@@ -108,7 +97,7 @@ type Float64ObservableUpDownCounter interface {
 }
 
 // Float64ObservableUpDownCounterConfig contains options for asynchronous
-// counter instruments that record int64 values.
+// counter instruments that record float64 values.
 type Float64ObservableUpDownCounterConfig struct {
 	description string
 	unit        string
@@ -165,7 +154,7 @@ type Float64ObservableGauge interface {
 }
 
 // Float64ObservableGaugeConfig contains options for asynchronous counter
-// instruments that record int64 values.
+// instruments that record float64 values.
 type Float64ObservableGaugeConfig struct {
 	description string
 	unit        string
@@ -224,7 +213,7 @@ type Float64Observer interface {
 }
 
 // Float64Callback is a function registered with a Meter that makes
-// observations for a Float64Observerable instrument it is registered with.
+// observations for a Float64Observable instrument it is registered with.
 // Calls to the Float64Observer record measurement values for the
 // Float64Observable.
 //

vendor/go.opentelemetry.io/otel/metric/asyncint64.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -223,7 +212,7 @@ type Int64Observer interface {
 }
 
 // Int64Callback is a function registered with a Meter that makes observations
-// for an Int64Observerable instrument it is registered with. Calls to the
+// for an Int64Observable instrument it is registered with. Calls to the
 // Int64Observer record measurement values for the Int64Observable.
 //
 // The function needs to complete in a finite amount of time and the deadline

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 

vendor/go.opentelemetry.io/otel/metric/doc.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric provides the OpenTelemetry API used to measure metrics about
@@ -68,6 +57,23 @@ asynchronous measurement, a Gauge ([Int64ObservableGauge] and
 See the [OpenTelemetry documentation] for more information about instruments
 and their intended use.
 
+# Instrument Name
+
+OpenTelemetry defines an [instrument name syntax] that restricts what
+instrument names are allowed.
+
+Instrument names should ...
+
+  - Not be empty.
+  - Have an alphabetic character as their first letter.
+  - Have any letter after the first be an alphanumeric character, ‘_’, ‘.’,
+    ‘-’, or ‘/’.
+  - Have a maximum length of 255 letters.
+
+To ensure compatibility with observability platforms, all instruments created
+need to conform to this syntax. Not all implementations of the API will validate
+these names, it is the callers responsibility to ensure compliance.
+
 # Measurements
 
 Measurements are made by recording values and information about the values with
@@ -164,6 +170,7 @@ It is strongly recommended that authors only embed
 That implementation is the only one OpenTelemetry authors can guarantee will
 fully implement all the API interfaces when a user updates their API.
 
+[instrument name syntax]: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-name-syntax
 [OpenTelemetry documentation]: https://opentelemetry.io/docs/concepts/signals/metrics/
 [GetMeterProvider]: https://pkg.go.dev/go.opentelemetry.io/otel#GetMeterProvider
 */

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

@@ -0,0 +1,3 @@
+# Metric Embedded
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/metric/embedded)](https://pkg.go.dev/go.opentelemetry.io/otel/metric/embedded)

vendor/go.opentelemetry.io/otel/metric/embedded/embedded.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 embedded provides interfaces embedded within the [OpenTelemetry
 // metric API].
@@ -113,6 +102,16 @@ type Float64Counter interface{ float64Counter() }
 // the API package).
 type Float64Histogram interface{ float64Histogram() }
 
+// Float64Gauge is embedded in [go.opentelemetry.io/otel/metric.Float64Gauge].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Float64Gauge] if you want users to
+// experience a compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.Float64Gauge]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Float64Gauge interface{ float64Gauge() }
+
 // Float64ObservableCounter is embedded in
 // [go.opentelemetry.io/otel/metric.Float64ObservableCounter].
 //
@@ -185,6 +184,16 @@ type Int64Counter interface{ int64Counter() }
 // the API package).
 type Int64Histogram interface{ int64Histogram() }
 
+// Int64Gauge is embedded in [go.opentelemetry.io/otel/metric.Int64Gauge].
+//
+// Embed this interface in your implementation of the
+// [go.opentelemetry.io/otel/metric.Int64Gauge] if you want users to experience
+// a compilation error, signaling they need to update to your latest
+// implementation, when the [go.opentelemetry.io/otel/metric.Int64Gauge]
+// interface is extended (which is something that can happen without a major
+// version bump of the API package).
+type Int64Gauge interface{ int64Gauge() }
+
 // Int64ObservableCounter is embedded in
 // [go.opentelemetry.io/otel/metric.Int64ObservableCounter].
 //

vendor/go.opentelemetry.io/otel/metric/instrument.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -27,6 +16,7 @@ type InstrumentOption interface {
 	Int64CounterOption
 	Int64UpDownCounterOption
 	Int64HistogramOption
+	Int64GaugeOption
 	Int64ObservableCounterOption
 	Int64ObservableUpDownCounterOption
 	Int64ObservableGaugeOption
@@ -34,6 +24,7 @@ type InstrumentOption interface {
 	Float64CounterOption
 	Float64UpDownCounterOption
 	Float64HistogramOption
+	Float64GaugeOption
 	Float64ObservableCounterOption
 	Float64ObservableUpDownCounterOption
 	Float64ObservableGaugeOption
@@ -62,6 +53,11 @@ func (o descOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64Histogra
 	return c
 }
 
+func (o descOpt) applyFloat64Gauge(c Float64GaugeConfig) Float64GaugeConfig {
+	c.description = string(o)
+	return c
+}
+
 func (o descOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
 	c.description = string(o)
 	return c
@@ -92,6 +88,11 @@ func (o descOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfi
 	return c
 }
 
+func (o descOpt) applyInt64Gauge(c Int64GaugeConfig) Int64GaugeConfig {
+	c.description = string(o)
+	return c
+}
+
 func (o descOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
 	c.description = string(o)
 	return c
@@ -127,6 +128,11 @@ func (o unitOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64Histogra
 	return c
 }
 
+func (o unitOpt) applyFloat64Gauge(c Float64GaugeConfig) Float64GaugeConfig {
+	c.unit = string(o)
+	return c
+}
+
 func (o unitOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
 	c.unit = string(o)
 	return c
@@ -157,6 +163,11 @@ func (o unitOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfi
 	return c
 }
 
+func (o unitOpt) applyInt64Gauge(c Int64GaugeConfig) Int64GaugeConfig {
+	c.unit = string(o)
+	return c
+}
+
 func (o unitOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
 	c.unit = string(o)
 	return c
@@ -340,7 +351,7 @@ func WithAttributeSet(attributes attribute.Set) MeasurementOption {
 //
 //	cp := make([]attribute.KeyValue, len(attributes))
 //	copy(cp, attributes)
-//	WithAttributes(attribute.NewSet(cp...))
+//	WithAttributeSet(attribute.NewSet(cp...))
 //
 // [attribute.NewSet] may modify the passed attributes so this will make a copy
 // of attributes before creating a set in order to ensure this function is

vendor/go.opentelemetry.io/otel/metric/meter.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -58,17 +47,41 @@ type Meter interface {
 	// Int64Counter returns a new Int64Counter instrument identified by name
 	// and configured with options. The instrument is used to synchronously
 	// record increasing int64 measurements during a computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64Counter(name string, options ...Int64CounterOption) (Int64Counter, error)
+
 	// Int64UpDownCounter returns a new Int64UpDownCounter instrument
 	// identified by name and configured with options. The instrument is used
 	// to synchronously record int64 measurements during a computational
 	// operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64UpDownCounter(name string, options ...Int64UpDownCounterOption) (Int64UpDownCounter, error)
+
 	// Int64Histogram returns a new Int64Histogram instrument identified by
 	// name and configured with options. The instrument is used to
 	// synchronously record the distribution of int64 measurements during a
 	// computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64Histogram(name string, options ...Int64HistogramOption) (Int64Histogram, error)
+
+	// Int64Gauge returns a new Int64Gauge instrument identified by name and
+	// configured with options. The instrument is used to synchronously record
+	// instantaneous int64 measurements during a computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
+	Int64Gauge(name string, options ...Int64GaugeOption) (Int64Gauge, error)
+
 	// Int64ObservableCounter returns a new Int64ObservableCounter identified
 	// by name and configured with options. The instrument is used to
 	// asynchronously record increasing int64 measurements once per a
@@ -78,7 +91,12 @@ type Meter interface {
 	// the WithInt64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64ObservableCounter(name string, options ...Int64ObservableCounterOption) (Int64ObservableCounter, error)
+
 	// Int64ObservableUpDownCounter returns a new Int64ObservableUpDownCounter
 	// instrument identified by name and configured with options. The
 	// instrument is used to asynchronously record int64 measurements once per
@@ -88,7 +106,12 @@ type Meter interface {
 	// the WithInt64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64ObservableUpDownCounter(name string, options ...Int64ObservableUpDownCounterOption) (Int64ObservableUpDownCounter, error)
+
 	// Int64ObservableGauge returns a new Int64ObservableGauge instrument
 	// identified by name and configured with options. The instrument is used
 	// to asynchronously record instantaneous int64 measurements once per a
@@ -98,23 +121,51 @@ type Meter interface {
 	// the WithInt64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Int64ObservableGauge(name string, options ...Int64ObservableGaugeOption) (Int64ObservableGauge, error)
 
 	// Float64Counter returns a new Float64Counter instrument identified by
 	// name and configured with options. The instrument is used to
 	// synchronously record increasing float64 measurements during a
 	// computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64Counter(name string, options ...Float64CounterOption) (Float64Counter, error)
+
 	// Float64UpDownCounter returns a new Float64UpDownCounter instrument
 	// identified by name and configured with options. The instrument is used
 	// to synchronously record float64 measurements during a computational
 	// operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64UpDownCounter(name string, options ...Float64UpDownCounterOption) (Float64UpDownCounter, error)
+
 	// Float64Histogram returns a new Float64Histogram instrument identified by
 	// name and configured with options. The instrument is used to
 	// synchronously record the distribution of float64 measurements during a
 	// computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64Histogram(name string, options ...Float64HistogramOption) (Float64Histogram, error)
+
+	// Float64Gauge returns a new Float64Gauge instrument identified by name and
+	// configured with options. The instrument is used to synchronously record
+	// instantaneous float64 measurements during a computational operation.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
+	Float64Gauge(name string, options ...Float64GaugeOption) (Float64Gauge, error)
+
 	// Float64ObservableCounter returns a new Float64ObservableCounter
 	// instrument identified by name and configured with options. The
 	// instrument is used to asynchronously record increasing float64
@@ -124,7 +175,12 @@ type Meter interface {
 	// the WithFloat64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64ObservableCounter(name string, options ...Float64ObservableCounterOption) (Float64ObservableCounter, error)
+
 	// Float64ObservableUpDownCounter returns a new
 	// Float64ObservableUpDownCounter instrument identified by name and
 	// configured with options. The instrument is used to asynchronously record
@@ -134,7 +190,12 @@ type Meter interface {
 	// the WithFloat64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64ObservableUpDownCounter(name string, options ...Float64ObservableUpDownCounterOption) (Float64ObservableUpDownCounter, error)
+
 	// Float64ObservableGauge returns a new Float64ObservableGauge instrument
 	// identified by name and configured with options. The instrument is used
 	// to asynchronously record instantaneous float64 measurements once per a
@@ -144,6 +205,10 @@ type Meter interface {
 	// the WithFloat64Callback option to register the callback here, or use the
 	// RegisterCallback method of this Meter to register one later. See the
 	// Measurements section of the package documentation for more information.
+	//
+	// The name needs to conform to the OpenTelemetry instrument name syntax.
+	// See the Instrument Name section of the package documentation for more
+	// information.
 	Float64ObservableGauge(name string, options ...Float64ObservableGaugeOption) (Float64ObservableGauge, error)
 
 	// RegisterCallback registers f to be called during the collection of a
@@ -189,6 +254,7 @@ type Observer interface {
 
 	// ObserveFloat64 records the float64 value for obsrv.
 	ObserveFloat64(obsrv Float64Observable, value float64, opts ...ObserveOption)
+
 	// ObserveInt64 records the int64 value for obsrv.
 	ObserveInt64(obsrv Int64Observable, value int64, opts ...ObserveOption)
 }

vendor/go.opentelemetry.io/otel/metric/syncfloat64.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -39,7 +28,7 @@ type Float64Counter interface {
 }
 
 // Float64CounterConfig contains options for synchronous counter instruments that
-// record int64 values.
+// record float64 values.
 type Float64CounterConfig struct {
 	description string
 	unit        string
@@ -92,7 +81,7 @@ type Float64UpDownCounter interface {
 }
 
 // Float64UpDownCounterConfig contains options for synchronous counter
-// instruments that record int64 values.
+// instruments that record float64 values.
 type Float64UpDownCounterConfig struct {
 	description string
 	unit        string
@@ -144,8 +133,8 @@ type Float64Histogram interface {
 	Record(ctx context.Context, incr float64, options ...RecordOption)
 }
 
-// Float64HistogramConfig contains options for synchronous counter instruments
+// Float64HistogramConfig contains options for synchronous histogram
-// that record int64 values.
+// instruments that record float64 values.
 type Float64HistogramConfig struct {
 	description              string
 	unit                     string
@@ -183,3 +172,55 @@ func (c Float64HistogramConfig) ExplicitBucketBoundaries() []float64 {
 type Float64HistogramOption interface {
 	applyFloat64Histogram(Float64HistogramConfig) Float64HistogramConfig
 }
+
+// Float64Gauge is an instrument that records instantaneous float64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Float64Gauge interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Float64Gauge
+
+	// Record records the instantaneous value.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, value float64, options ...RecordOption)
+}
+
+// Float64GaugeConfig contains options for synchronous gauge instruments that
+// record float64 values.
+type Float64GaugeConfig struct {
+	description string
+	unit        string
+}
+
+// NewFloat64GaugeConfig returns a new [Float64GaugeConfig] with all opts
+// applied.
+func NewFloat64GaugeConfig(opts ...Float64GaugeOption) Float64GaugeConfig {
+	var config Float64GaugeConfig
+	for _, o := range opts {
+		config = o.applyFloat64Gauge(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Float64GaugeConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Float64GaugeConfig) Unit() string {
+	return c.unit
+}
+
+// Float64GaugeOption applies options to a [Float64GaugeConfig]. See
+// [InstrumentOption] for other options that can be used as a
+// Float64GaugeOption.
+type Float64GaugeOption interface {
+	applyFloat64Gauge(Float64GaugeConfig) Float64GaugeConfig
+}

vendor/go.opentelemetry.io/otel/metric/syncint64.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 metric // import "go.opentelemetry.io/otel/metric"
 
@@ -144,7 +133,7 @@ type Int64Histogram interface {
 	Record(ctx context.Context, incr int64, options ...RecordOption)
 }
 
-// Int64HistogramConfig contains options for synchronous counter instruments
+// Int64HistogramConfig contains options for synchronous histogram instruments
 // that record int64 values.
 type Int64HistogramConfig struct {
 	description              string
@@ -183,3 +172,55 @@ func (c Int64HistogramConfig) ExplicitBucketBoundaries() []float64 {
 type Int64HistogramOption interface {
 	applyInt64Histogram(Int64HistogramConfig) Int64HistogramConfig
 }
+
+// Int64Gauge is an instrument that records instantaneous int64 values.
+//
+// Warning: Methods may be added to this interface in minor releases. See
+// package documentation on API implementation for information on how to set
+// default behavior for unimplemented methods.
+type Int64Gauge interface {
+	// Users of the interface can ignore this. This embedded type is only used
+	// by implementations of this interface. See the "API Implementations"
+	// section of the package documentation for more information.
+	embedded.Int64Gauge
+
+	// Record records the instantaneous value.
+	//
+	// Use the WithAttributeSet (or, if performance is not a concern,
+	// the WithAttributes) option to include measurement attributes.
+	Record(ctx context.Context, value int64, options ...RecordOption)
+}
+
+// Int64GaugeConfig contains options for synchronous gauge instruments that
+// record int64 values.
+type Int64GaugeConfig struct {
+	description string
+	unit        string
+}
+
+// NewInt64GaugeConfig returns a new [Int64GaugeConfig] with all opts
+// applied.
+func NewInt64GaugeConfig(opts ...Int64GaugeOption) Int64GaugeConfig {
+	var config Int64GaugeConfig
+	for _, o := range opts {
+		config = o.applyInt64Gauge(config)
+	}
+	return config
+}
+
+// Description returns the configured description.
+func (c Int64GaugeConfig) Description() string {
+	return c.description
+}
+
+// Unit returns the configured unit.
+func (c Int64GaugeConfig) Unit() string {
+	return c.unit
+}
+
+// Int64GaugeOption applies options to a [Int64GaugeConfig]. See
+// [InstrumentOption] for other options that can be used as a
+// Int64GaugeOption.
+type Int64GaugeOption interface {
+	applyInt64Gauge(Int64GaugeConfig) Int64GaugeConfig
+}

vendor/go.opentelemetry.io/otel/propagation.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 otel // import "go.opentelemetry.io/otel"
 

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

@@ -0,0 +1,3 @@
+# Propagation
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/propagation)](https://pkg.go.dev/go.opentelemetry.io/otel/propagation)

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

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 propagation // import "go.opentelemetry.io/otel/propagation"
 

vendor/go.opentelemetry.io/otel/propagation/doc.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 propagation contains OpenTelemetry context propagators.

vendor/go.opentelemetry.io/otel/propagation/propagation.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 propagation // import "go.opentelemetry.io/otel/propagation"
 

vendor/go.opentelemetry.io/otel/propagation/trace_context.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 propagation // import "go.opentelemetry.io/otel/propagation"
 
@@ -18,7 +7,7 @@ import (
 	"context"
 	"encoding/hex"
 	"fmt"
-	"regexp"
+	"strings"
 
 	"go.opentelemetry.io/otel/trace"
 )
@@ -28,6 +17,7 @@ const (
 	maxVersion        = 254
 	traceparentHeader = "traceparent"
 	tracestateHeader  = "tracestate"
+	delimiter         = "-"
 )
 
 // TraceContext is a propagator that supports the W3C Trace Context format
@@ -41,11 +31,11 @@ const (
 type TraceContext struct{}
 
 var (
-	_              TextMapPropagator = TraceContext{}
+	_           TextMapPropagator = TraceContext{}
-	traceCtxRegExp                   = regexp.MustCompile("^(?P<version>[0-9a-f]{2})-(?P<traceID>[a-f0-9]{32})-(?P<spanID>[a-f0-9]{16})-(?P<traceFlags>[a-f0-9]{2})(?:-.*)?$")
+	versionPart                   = fmt.Sprintf("%.2X", supportedVersion)
 )
 
-// Inject set tracecontext from the Context into the carrier.
+// Inject injects the trace context from ctx into carrier.
 func (tc TraceContext) Inject(ctx context.Context, carrier TextMapCarrier) {
 	sc := trace.SpanContextFromContext(ctx)
 	if !sc.IsValid() {
@@ -59,12 +49,19 @@ func (tc TraceContext) Inject(ctx context.Context, carrier TextMapCarrier) {
 	// Clear all flags other than the trace-context supported sampling bit.
 	flags := sc.TraceFlags() & trace.FlagsSampled
 
-	h := fmt.Sprintf("%.2x-%s-%s-%s",
+	var sb strings.Builder
-		supportedVersion,
+	sb.Grow(2 + 32 + 16 + 2 + 3)
-		sc.TraceID(),
+	_, _ = sb.WriteString(versionPart)
-		sc.SpanID(),
+	traceID := sc.TraceID()
-		flags)
+	spanID := sc.SpanID()
-	carrier.Set(traceparentHeader, h)
+	flagByte := [1]byte{byte(flags)}
+	var buf [32]byte
+	for _, src := range [][]byte{traceID[:], spanID[:], flagByte[:]} {
+		_ = sb.WriteByte(delimiter[0])
+		n := hex.Encode(buf[:], src)
+		_, _ = sb.Write(buf[:n])
+	}
+	carrier.Set(traceparentHeader, sb.String())
 }
 
 // Extract reads tracecontext from the carrier into a returned Context.
@@ -86,21 +83,8 @@ func (tc TraceContext) extract(carrier TextMapCarrier) trace.SpanContext {
 		return trace.SpanContext{}
 	}
 
-	matches := traceCtxRegExp.FindStringSubmatch(h)
+	var ver [1]byte
-
+	if !extractPart(ver[:], &h, 2) {
-	if len(matches) == 0 {
-		return trace.SpanContext{}
-	}
-
-	if len(matches) < 5 { // four subgroups plus the overall match
-		return trace.SpanContext{}
-	}
-
-	if len(matches[1]) != 2 {
-		return trace.SpanContext{}
-	}
-	ver, err := hex.DecodeString(matches[1])
-	if err != nil {
 		return trace.SpanContext{}
 	}
 	version := int(ver[0])
@@ -108,36 +92,24 @@ func (tc TraceContext) extract(carrier TextMapCarrier) trace.SpanContext {
 		return trace.SpanContext{}
 	}
 
-	if version == 0 && len(matches) != 5 { // four subgroups plus the overall match
-		return trace.SpanContext{}
-	}
-
-	if len(matches[2]) != 32 {
-		return trace.SpanContext{}
-	}
-
 	var scc trace.SpanContextConfig
-
+	if !extractPart(scc.TraceID[:], &h, 32) {
-	scc.TraceID, err = trace.TraceIDFromHex(matches[2][:32])
+		return trace.SpanContext{}
-	if err != nil {
+	}
+	if !extractPart(scc.SpanID[:], &h, 16) {
 		return trace.SpanContext{}
 	}
 
-	if len(matches[3]) != 16 {
+	var opts [1]byte
+	if !extractPart(opts[:], &h, 2) {
 		return trace.SpanContext{}
 	}
-	scc.SpanID, err = trace.SpanIDFromHex(matches[3])
+	if version == 0 && (h != "" || opts[0] > 2) {
-	if err != nil {
+		// version 0 not allow extra
+		// version 0 not allow other flag
 		return trace.SpanContext{}
 	}
 
-	if len(matches[4]) != 2 {
-		return trace.SpanContext{}
-	}
-	opts, err := hex.DecodeString(matches[4])
-	if err != nil || len(opts) < 1 || (version == 0 && opts[0] > 2) {
-		return trace.SpanContext{}
-	}
 	// Clear all flags other than the trace-context supported sampling bit.
 	scc.TraceFlags = trace.TraceFlags(opts[0]) & trace.FlagsSampled
 
@@ -155,6 +127,29 @@ func (tc TraceContext) extract(carrier TextMapCarrier) trace.SpanContext {
 	return sc
 }
 
+// upperHex detect hex is upper case Unicode characters.
+func upperHex(v string) bool {
+	for _, c := range v {
+		if c >= 'A' && c <= 'F' {
+			return true
+		}
+	}
+	return false
+}
+
+func extractPart(dst []byte, h *string, n int) bool {
+	part, left, _ := strings.Cut(*h, delimiter)
+	*h = left
+	// hex.Decode decodes unsupported upper-case characters, so exclude explicitly.
+	if len(part) != n || upperHex(part) {
+		return false
+	}
+	if p, err := hex.Decode(dst, []byte(part)); err != nil || p != n/2 {
+		return false
+	}
+	return true
+}
+
 // Fields returns the keys who's values are set with Inject.
 func (tc TraceContext) Fields() []string {
 	return []string{traceparentHeader, tracestateHeader}

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

@@ -0,0 +1,32 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "ignorePaths": [],
+  "labels": ["Skip Changelog", "dependencies"],
+  "postUpdateOptions" : [
+    "gomodTidy"
+  ],
+  "packageRules": [
+    {
+      "matchManagers": ["gomod"],
+      "matchDepTypes": ["indirect"],
+      "enabled": true
+    },
+    {
+      "matchFileNames": ["internal/tools/**"],
+      "matchManagers": ["gomod"],
+      "matchDepTypes": ["indirect"],
+      "enabled": false
+    },
+    {
+      "matchPackageNames": ["google.golang.org/genproto/googleapis/**"],
+      "groupName": "googleapis"
+    },
+    {
+      "matchPackageNames": ["golang.org/x/**"],
+      "groupName": "golang.org/x"
+    }
+  ]
+}

vendor/go.opentelemetry.io/otel/requirements.txt

@@ -1 +1 @@
-codespell==2.2.6
+codespell==2.3.0

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

@@ -0,0 +1,3 @@
+# SDK
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/sdk)](https://pkg.go.dev/go.opentelemetry.io/otel/sdk)

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

@@ -0,0 +1,3 @@
+# SDK Instrumentation
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/sdk/instrumentation)](https://pkg.go.dev/go.opentelemetry.io/otel/sdk/instrumentation)

vendor/go.opentelemetry.io/otel/sdk/instrumentation/doc.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 instrumentation provides types to represent the code libraries that
 // provide OpenTelemetry instrumentation. These types are used in the

vendor/go.opentelemetry.io/otel/sdk/instrumentation/library.go

@@ -1,19 +1,9 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 instrumentation // import "go.opentelemetry.io/otel/sdk/instrumentation"
 
 // Library represents the instrumentation library.
-// Deprecated: please use Scope instead.
+//
+// Deprecated: use [Scope] instead.
 type Library = Scope

vendor/go.opentelemetry.io/otel/sdk/instrumentation/scope.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 instrumentation // import "go.opentelemetry.io/otel/sdk/instrumentation"
 

vendor/go.opentelemetry.io/otel/sdk/internal/env/env.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 env // import "go.opentelemetry.io/otel/sdk/internal/env"
 
@@ -33,7 +22,7 @@ const (
 	BatchSpanProcessorMaxQueueSizeKey = "OTEL_BSP_MAX_QUEUE_SIZE"
 	// BatchSpanProcessorMaxExportBatchSizeKey is the maximum batch size (i.e.
 	// 512). Note: it must be less than or equal to
-	// EnvBatchSpanProcessorMaxQueueSize.
+	// BatchSpanProcessorMaxQueueSize.
 	BatchSpanProcessorMaxExportBatchSizeKey = "OTEL_BSP_MAX_EXPORT_BATCH_SIZE"
 
 	// AttributeValueLengthKey is the maximum allowed attribute value size.

vendor/go.opentelemetry.io/otel/sdk/internal/gen.go

@@ -1,29 +0,0 @@
-// Copyright The OpenTelemetry 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 internal // import "go.opentelemetry.io/otel/sdk/internal"
-
-//go:generate gotmpl --body=../../internal/shared/matchers/expectation.go.tmpl "--data={}" --out=matchers/expectation.go
-//go:generate gotmpl --body=../../internal/shared/matchers/expecter.go.tmpl "--data={}" --out=matchers/expecter.go
-//go:generate gotmpl --body=../../internal/shared/matchers/temporal_matcher.go.tmpl "--data={}" --out=matchers/temporal_matcher.go
-
-//go:generate gotmpl --body=../../internal/shared/internaltest/alignment.go.tmpl "--data={}" --out=internaltest/alignment.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/env.go.tmpl "--data={}" --out=internaltest/env.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/env_test.go.tmpl "--data={}" --out=internaltest/env_test.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/errors.go.tmpl "--data={}" --out=internaltest/errors.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/harness.go.tmpl "--data={\"matchersImportPath\": \"go.opentelemetry.io/otel/sdk/internal/matchers\"}" --out=internaltest/harness.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/text_map_carrier.go.tmpl "--data={}" --out=internaltest/text_map_carrier.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/text_map_carrier_test.go.tmpl "--data={}" --out=internaltest/text_map_carrier_test.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/text_map_propagator.go.tmpl "--data={}" --out=internaltest/text_map_propagator.go
-//go:generate gotmpl --body=../../internal/shared/internaltest/text_map_propagator_test.go.tmpl "--data={}" --out=internaltest/text_map_propagator_test.go

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

@@ -1,28 +0,0 @@
-// Copyright The OpenTelemetry 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 internal // import "go.opentelemetry.io/otel/sdk/internal"
-
-import "time"
-
-// MonotonicEndTime returns the end time at present
-// but offset from start, monotonically.
-//
-// The monotonic clock is used in subtractions hence
-// the duration since start added back to start gives
-// end as a monotonic time.
-// See https://golang.org/pkg/time/#hdr-Monotonic_Clocks
-func MonotonicEndTime(start time.Time) time.Time {
-	return start.Add(time.Since(start))
-}

vendor/go.opentelemetry.io/otel/sdk/internal/x/README.md

@@ -0,0 +1,46 @@
+# Experimental Features
+
+The SDK contains features that have not yet stabilized in the OpenTelemetry specification.
+These features are added to the OpenTelemetry Go SDK prior to stabilization in the specification so that users can start experimenting with them and provide feedback.
+
+These feature may change in backwards incompatible ways as feedback is applied.
+See the [Compatibility and Stability](#compatibility-and-stability) section for more information.
+
+## Features
+
+- [Resource](#resource)
+
+### Resource
+
+[OpenTelemetry resource semantic conventions] include many attribute definitions that are defined as experimental.
+To have experimental semantic conventions be added by [resource detectors] set the `OTEL_GO_X_RESOURCE` environment variable.
+The value set must be the case-insensitive string of `"true"` to enable the feature.
+All other values are ignored.
+
+<!-- TODO: document what attributes are added by which detector -->
+
+[OpenTelemetry resource semantic conventions]: https://opentelemetry.io/docs/specs/semconv/resource/
+[resource detectors]: https://pkg.go.dev/go.opentelemetry.io/otel/sdk/resource#Detector
+
+#### Examples
+
+Enable experimental resource semantic conventions.
+
+```console
+export OTEL_GO_X_RESOURCE=true
+```
+
+Disable experimental resource semantic conventions.
+
+```console
+unset OTEL_GO_X_RESOURCE
+```
+
+## Compatibility and Stability
+
+Experimental features do not fall within the scope of the OpenTelemetry Go versioning and stability [policy](../../../VERSIONING.md).
+These features may be removed or modified in successive version releases, including patch versions.
+
+When an experimental feature is promoted to a stable feature, a migration path will be included in the changelog entry of the release.
+There is no guarantee that any environment variable feature flags that enabled the experimental feature will be supported by the stable version.
+If they are supported, they may be accompanied with a deprecation notice stating a timeline for the removal of that support.

vendor/go.opentelemetry.io/otel/sdk/internal/x/x.go

@@ -0,0 +1,66 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+// Package x contains support for OTel SDK experimental features.
+//
+// This package should only be used for features defined in the specification.
+// It should not be used for experiments or new project ideas.
+package x // import "go.opentelemetry.io/otel/sdk/internal/x"
+
+import (
+	"os"
+	"strings"
+)
+
+// Resource is an experimental feature flag that defines if resource detectors
+// should be included experimental semantic conventions.
+//
+// To enable this feature set the OTEL_GO_X_RESOURCE environment variable
+// to the case-insensitive string value of "true" (i.e. "True" and "TRUE"
+// will also enable this).
+var Resource = newFeature("RESOURCE", func(v string) (string, bool) {
+	if strings.ToLower(v) == "true" {
+		return v, true
+	}
+	return "", false
+})
+
+// Feature is an experimental feature control flag. It provides a uniform way
+// to interact with these feature flags and parse their values.
+type Feature[T any] struct {
+	key   string
+	parse func(v string) (T, bool)
+}
+
+func newFeature[T any](suffix string, parse func(string) (T, bool)) Feature[T] {
+	const envKeyRoot = "OTEL_GO_X_"
+	return Feature[T]{
+		key:   envKeyRoot + suffix,
+		parse: parse,
+	}
+}
+
+// Key returns the environment variable key that needs to be set to enable the
+// feature.
+func (f Feature[T]) Key() string { return f.key }
+
+// Lookup returns the user configured value for the feature and true if the
+// user has enabled the feature. Otherwise, if the feature is not enabled, a
+// zero-value and false are returned.
+func (f Feature[T]) Lookup() (v T, ok bool) {
+	// https://github.com/open-telemetry/opentelemetry-specification/blob/62effed618589a0bec416a87e559c0a9d96289bb/specification/configuration/sdk-environment-variables.md#parsing-empty-value
+	//
+	// > The SDK MUST interpret an empty value of an environment variable the
+	// > same way as when the variable is unset.
+	vRaw := os.Getenv(f.key)
+	if vRaw == "" {
+		return v, ok
+	}
+	return f.parse(vRaw)
+}
+
+// Enabled returns if the feature is enabled.
+func (f Feature[T]) Enabled() bool {
+	_, ok := f.Lookup()
+	return ok
+}

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

@@ -0,0 +1,3 @@
+# SDK Resource
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/sdk/resource)](https://pkg.go.dev/go.opentelemetry.io/otel/sdk/resource)

vendor/go.opentelemetry.io/otel/sdk/resource/auto.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -41,8 +30,20 @@ type Detector interface {
 	// must never be done outside of a new major release.
 }
 
-// Detect calls all input detectors sequentially and merges each result with the previous one.
+// Detect returns a new [Resource] merged from all the Resources each of the
-// It returns the merged error too.
+// detectors produces. Each of the detectors are called sequentially, in the
+// order they are passed, merging the produced resource into the previous.
+//
+// This may return a partial Resource along with an error containing
+// [ErrPartialResource] if that error is returned from a detector. It may also
+// return a merge-conflicting Resource along with an error containing
+// [ErrSchemaURLConflict] if merging Resources from different detectors results
+// in a schema URL conflict. It is up to the caller to determine if this
+// returned Resource should be used or not.
+//
+// If one of the detectors returns an error that is not [ErrPartialResource],
+// the resource produced by the detector will not be merged and the returned
+// error will wrap that detector's error.
 func Detect(ctx context.Context, detectors ...Detector) (*Resource, error) {
 	r := new(Resource)
 	return r, detect(ctx, r, detectors)
@@ -50,6 +51,10 @@ func Detect(ctx context.Context, detectors ...Detector) (*Resource, error) {
 
 // detect runs all detectors using ctx and merges the result into res. This
 // assumes res is allocated and not nil, it will panic otherwise.
+//
+// If the detectors or merging resources produces any errors (i.e.
+// [ErrPartialResource] [ErrSchemaURLConflict]), a single error wrapping all of
+// these errors will be returned. Otherwise, nil is returned.
 func detect(ctx context.Context, res *Resource, detectors []Detector) error {
 	var (
 		r    *Resource
@@ -78,6 +83,11 @@ func detect(ctx context.Context, res *Resource, detectors []Detector) error {
 	if len(errs) == 0 {
 		return nil
 	}
+	if errors.Is(errs, ErrSchemaURLConflict) {
+		// If there has been a merge conflict, ensure the resource has no
+		// schema URL.
+		res.schemaURL = ""
+	}
 	return errs
 }
 

vendor/go.opentelemetry.io/otel/sdk/resource/builtin.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -20,9 +9,11 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/google/uuid"
+
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/sdk"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 type (
@@ -47,6 +38,8 @@ type (
 	}
 
 	defaultServiceNameDetector struct{}
+
+	defaultServiceInstanceIDDetector struct{}
 )
 
 var (
@@ -54,6 +47,7 @@ var (
 	_ Detector = host{}
 	_ Detector = stringDetector{}
 	_ Detector = defaultServiceNameDetector{}
+	_ Detector = defaultServiceInstanceIDDetector{}
 )
 
 // Detect returns a *Resource that describes the OpenTelemetry SDK used.
@@ -106,3 +100,19 @@ func (defaultServiceNameDetector) Detect(ctx context.Context) (*Resource, error)
 		},
 	).Detect(ctx)
 }
+
+// Detect implements Detector.
+func (defaultServiceInstanceIDDetector) Detect(ctx context.Context) (*Resource, error) {
+	return StringDetector(
+		semconv.SchemaURL,
+		semconv.ServiceInstanceIDKey,
+		func() (string, error) {
+			version4Uuid, err := uuid.NewRandom()
+			if err != nil {
+				return "", err
+			}
+
+			return version4Uuid.String(), nil
+		},
+	).Detect(ctx)
+}

vendor/go.opentelemetry.io/otel/sdk/resource/config.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 

vendor/go.opentelemetry.io/otel/sdk/resource/container.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -22,14 +11,14 @@ import (
 	"os"
 	"regexp"
 
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 type containerIDProvider func() (string, error)
 
 var (
 	containerID         containerIDProvider = getContainerIDFromCGroup
-	cgroupContainerIDRe                     = regexp.MustCompile(`^.*/(?:.*-)?([0-9a-f]+)(?:\.|\s*$)`)
+	cgroupContainerIDRe                     = regexp.MustCompile(`^.*/(?:.*[-:])?([0-9a-f]+)(?:\.|\s*$)`)
 )
 
 type cgroupContainerIDDetector struct{}

vendor/go.opentelemetry.io/otel/sdk/resource/doc.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource provides detecting and representing resources.
 //

vendor/go.opentelemetry.io/otel/sdk/resource/env.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -23,7 +12,7 @@ import (
 
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 const (

vendor/go.opentelemetry.io/otel/sdk/resource/host_id.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -19,7 +8,7 @@ import (
 	"errors"
 	"strings"
 
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 type hostIDProvider func() (string, error)

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_bsd.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build dragonfly || freebsd || netbsd || openbsd || solaris
 // +build dragonfly freebsd netbsd openbsd solaris

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_darwin.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_exec.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build darwin || dragonfly || freebsd || netbsd || openbsd || solaris
 

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_linux.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build linux
 // +build linux

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_readfile.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build linux || dragonfly || freebsd || netbsd || openbsd || solaris
 

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_unsupported.go

@@ -1,25 +1,8 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
-// +build !darwin
+//go:build !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows
-// +build !dragonfly
+// +build !darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
-// +build !freebsd
-// +build !linux
-// +build !netbsd
-// +build !openbsd
-// +build !solaris
-// +build !windows
 
 package resource // import "go.opentelemetry.io/otel/sdk/resource"
 

vendor/go.opentelemetry.io/otel/sdk/resource/host_id_windows.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build windows
 // +build windows
@@ -21,17 +10,16 @@ import (
 	"golang.org/x/sys/windows/registry"
 )
 
-// implements hostIDReader
+// implements hostIDReader.
 type hostIDReaderWindows struct{}
 
-// read reads MachineGuid from the windows registry key:
+// read reads MachineGuid from the Windows registry key:
-// SOFTWARE\Microsoft\Cryptography
+// SOFTWARE\Microsoft\Cryptography.
 func (*hostIDReaderWindows) read() (string, error) {
 	k, err := registry.OpenKey(
 		registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Cryptography`,
 		registry.QUERY_VALUE|registry.WOW64_64KEY,
 	)
-
 	if err != nil {
 		return "", err
 	}

vendor/go.opentelemetry.io/otel/sdk/resource/os.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -19,7 +8,7 @@ import (
 	"strings"
 
 	"go.opentelemetry.io/otel/attribute"
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 type osDescriptionProvider func() (string, error)

vendor/go.opentelemetry.io/otel/sdk/resource/os_release_darwin.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 

vendor/go.opentelemetry.io/otel/sdk/resource/os_release_unix.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build aix || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
 // +build aix dragonfly freebsd linux netbsd openbsd solaris zos

vendor/go.opentelemetry.io/otel/sdk/resource/os_unix.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
 //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris zos

vendor/go.opentelemetry.io/otel/sdk/resource/os_unsupported.go

@@ -1,27 +1,8 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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.
 
-// +build !aix
+//go:build !aix && !darwin && !dragonfly && !freebsd && !linux && !netbsd && !openbsd && !solaris && !windows && !zos
-// +build !darwin
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows,!zos
-// +build !dragonfly
-// +build !freebsd
-// +build !linux
-// +build !netbsd
-// +build !openbsd
-// +build !solaris
-// +build !windows
-// +build !zos
 
 package resource // import "go.opentelemetry.io/otel/sdk/resource"
 

vendor/go.opentelemetry.io/otel/sdk/resource/os_windows.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -28,7 +17,6 @@ import (
 func platformOSDescription() (string, error) {
 	k, err := registry.OpenKey(
 		registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion`, registry.QUERY_VALUE)
-
 	if err != nil {
 		return "", err
 	}

vendor/go.opentelemetry.io/otel/sdk/resource/process.go

@@ -1,16 +1,5 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
@@ -22,7 +11,7 @@ import (
 	"path/filepath"
 	"runtime"
 
-	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
+	semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
 )
 
 type (

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

@@ -1,26 +1,17 @@
 // Copyright The OpenTelemetry Authors
-//
+// SPDX-License-Identifier: Apache-2.0
-// 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 resource // import "go.opentelemetry.io/otel/sdk/resource"
 
 import (
 	"context"
 	"errors"
+	"fmt"
 	"sync"
 
 	"go.opentelemetry.io/otel"
 	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/sdk/internal/x"
 )
 
 // Resource describes an entity about which identifying information
@@ -40,9 +31,20 @@ var (
 	defaultResourceOnce sync.Once
 )
 
-var errMergeConflictSchemaURL = errors.New("cannot merge resource due to conflicting Schema URL")
+// ErrSchemaURLConflict is an error returned when two Resources are merged
+// together that contain different, non-empty, schema URLs.
+var ErrSchemaURLConflict = errors.New("conflicting Schema URL")
 
-// New returns a Resource combined from the user-provided detectors.
+// New returns a [Resource] built using opts.
+//
+// This may return a partial Resource along with an error containing
+// [ErrPartialResource] if options that provide a [Detector] are used and that
+// error is returned from one or more of the Detectors. It may also return a
+// merge-conflict Resource along with an error containing
+// [ErrSchemaURLConflict] if merging Resources from the opts results in a
+// schema URL conflict (see [Resource.Merge] for more information). It is up to
+// the caller to determine if this returned Resource should be used or not
+// based on these errors.
 func New(ctx context.Context, opts ...Option) (*Resource, error) {
 	cfg := config{}
 	for _, opt := range opts {
@@ -98,7 +100,7 @@ func (r *Resource) String() string {
 	return r.attrs.Encoded(attribute.DefaultEncoder())
 }
 
-// MarshalLog is the marshaling function used by the logging system to represent this exporter.
+// MarshalLog is the marshaling function used by the logging system to represent this Resource.
 func (r *Resource) MarshalLog() interface{} {
 	return struct {
 		Attributes attribute.Set
@@ -146,16 +148,29 @@ func (r *Resource) Equal(eq *Resource) bool {
 	return r.Equivalent() == eq.Equivalent()
 }
 
-// Merge creates a new resource by combining resource a and b.
+// Merge creates a new [Resource] by merging a and b.
 //
-// If there are common keys between resource a and b, then the value
+// If there are common keys between a and b, then the value from b will
-// from resource b will overwrite the value from resource a, even
+// overwrite the value from a, even if b's value is empty.
-// if resource b's value is empty.
 //
-// The SchemaURL of the resources will be merged according to the spec rules:
+// The SchemaURL of the resources will be merged according to the
-// https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/resource/sdk.md#merge
+// [OpenTelemetry specification rules]:
-// If the resources have different non-empty schemaURL an empty resource and an error
+//
-// will be returned.
+//   - If a's schema URL is empty then the returned Resource's schema URL will
+//     be set to the schema URL of b,
+//   - Else if b's schema URL is empty then the returned Resource's schema URL
+//     will be set to the schema URL of a,
+//   - Else if the schema URLs of a and b are the same then that will be the
+//     schema URL of the returned Resource,
+//   - Else this is a merging error. If the resources have different,
+//     non-empty, schema URLs an error containing [ErrSchemaURLConflict] will
+//     be returned with the merged Resource. The merged Resource will have an
+//     empty schema URL. It may be the case that some unintended attributes
+//     have been overwritten or old semantic conventions persisted in the
+//     returned Resource. It is up to the caller to determine if this returned
+//     Resource should be used or not.
+//
+// [OpenTelemetry specification rules]: https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/resource/sdk.md#merge
 func Merge(a, b *Resource) (*Resource, error) {
 	if a == nil && b == nil {
 		return Empty(), nil
@@ -167,19 +182,6 @@ func Merge(a, b *Resource) (*Resource, error) {
 		return a, nil
 	}
 
-	// Merge the schema URL.
-	var schemaURL string
-	switch true {
-	case a.schemaURL == "":
-		schemaURL = b.schemaURL
-	case b.schemaURL == "":
-		schemaURL = a.schemaURL
-	case a.schemaURL == b.schemaURL:
-		schemaURL = a.schemaURL
-	default:
-		return Empty(), errMergeConflictSchemaURL
-	}
-
 	// Note: 'b' attributes will overwrite 'a' with last-value-wins in attribute.Key()
 	// Meaning this is equivalent to: append(a.Attributes(), b.Attributes()...)
 	mi := attribute.NewMergeIterator(b.Set(), a.Set())
@@ -187,8 +189,23 @@ func Merge(a, b *Resource) (*Resource, error) {
 	for mi.Next() {
 		combine = append(combine, mi.Attribute())
 	}
-	merged := NewWithAttributes(schemaURL, combine...)
+
-	return merged, nil
+	switch {
+	case a.schemaURL == "":
+		return NewWithAttributes(b.schemaURL, combine...), nil
+	case b.schemaURL == "":
+		return NewWithAttributes(a.schemaURL, combine...), nil
+	case a.schemaURL == b.schemaURL:
+		return NewWithAttributes(a.schemaURL, combine...), nil
+	}
+	// Return the merged resource with an appropriate error. It is up to
+	// the user to decide if the returned resource can be used or not.
+	return NewSchemaless(combine...), fmt.Errorf(
+		"%w: %s and %s",
+		ErrSchemaURLConflict,
+		a.schemaURL,
+		b.schemaURL,
+	)
 }
 
 // Empty returns an instance of Resource with no attributes. It is
@@ -202,11 +219,17 @@ func Empty() *Resource {
 func Default() *Resource {
 	defaultResourceOnce.Do(func() {
 		var err error
-		defaultResource, err = Detect(
+		defaultDetectors := []Detector{
-			context.Background(),
 			defaultServiceNameDetector{},
 			fromEnv{},
 			telemetrySDK{},
+		}
+		if x.Resource.Enabled() {
+			defaultDetectors = append([]Detector{defaultServiceInstanceIDDetector{}}, defaultDetectors...)
+		}
+		defaultResource, err = Detect(
+			context.Background(),
+			defaultDetectors...,
 		)
 		if err != nil {
 			otel.Handle(err)

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

@@ -0,0 +1,3 @@
+# SDK Trace
+
+[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/sdk/trace)](https://pkg.go.dev/go.opentelemetry.io/otel/sdk/trace)