174ab989b3
Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.70.0 to 1.71.0. - [Release notes](https://github.com/grpc/grpc-go/releases) - [Commits](https://github.com/grpc/grpc-go/compare/v1.70.0...v1.71.0) --- 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>
95 lines
2.8 KiB
Go
95 lines
2.8 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package sdk
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import (
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"log/slog"
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"os"
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"strconv"
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)
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// maxSpan are the span limits resolved during startup.
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var maxSpan = newSpanLimits()
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type spanLimits struct {
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// Attrs is the number of allowed attributes for a span.
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//
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// This is resolved from the environment variable value for the
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// OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT key if it exists. Otherwise, the
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// environment variable value for OTEL_ATTRIBUTE_COUNT_LIMIT, or 128 if
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// that is not set, is used.
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Attrs int
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// AttrValueLen is the maximum attribute value length allowed for a span.
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//
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// This is resolved from the environment variable value for the
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// OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT key if it exists. Otherwise, the
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// environment variable value for OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT, or -1
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// if that is not set, is used.
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AttrValueLen int
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// Events is the number of allowed events for a span.
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//
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// This is resolved from the environment variable value for the
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// OTEL_SPAN_EVENT_COUNT_LIMIT key, or 128 is used if that is not set.
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Events int
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// EventAttrs is the number of allowed attributes for a span event.
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//
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// The is resolved from the environment variable value for the
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// OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT key, or 128 is used if that is not set.
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EventAttrs int
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// Links is the number of allowed Links for a span.
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//
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// This is resolved from the environment variable value for the
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// OTEL_SPAN_LINK_COUNT_LIMIT, or 128 is used if that is not set.
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Links int
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// LinkAttrs is the number of allowed attributes for a span link.
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//
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// This is resolved from the environment variable value for the
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// OTEL_LINK_ATTRIBUTE_COUNT_LIMIT, or 128 is used if that is not set.
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LinkAttrs int
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}
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func newSpanLimits() spanLimits {
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return spanLimits{
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Attrs: firstEnv(
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128,
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"OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT",
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"OTEL_ATTRIBUTE_COUNT_LIMIT",
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),
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AttrValueLen: firstEnv(
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-1, // Unlimited.
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"OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT",
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"OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT",
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),
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Events: firstEnv(128, "OTEL_SPAN_EVENT_COUNT_LIMIT"),
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EventAttrs: firstEnv(128, "OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT"),
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Links: firstEnv(128, "OTEL_SPAN_LINK_COUNT_LIMIT"),
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LinkAttrs: firstEnv(128, "OTEL_LINK_ATTRIBUTE_COUNT_LIMIT"),
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}
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}
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// firstEnv returns the parsed integer value of the first matching environment
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// variable from keys. The defaultVal is returned if the value is not an
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// integer or no match is found.
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func firstEnv(defaultVal int, keys ...string) int {
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for _, key := range keys {
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strV := os.Getenv(key)
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if strV == "" {
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continue
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}
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v, err := strconv.Atoi(strV)
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if err == nil {
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return v
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}
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slog.Warn(
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"invalid limit environment variable",
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"error", err,
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"key", key,
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"value", strV,
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)
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}
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return defaultVal
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}
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