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80cb909774
Based on the Go version we currently use, the dependency already supports 1.24+, which allows using `t.Context()` and `b.Context()` in unit tests and benchmarks respectively. - Enable `context-background` and `context-todo` in [`usetesting`](https://golangci-lint.run/docs/linters/configuration/#usetesting) - Adjust the code to support linter detection --------- Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> Co-authored-by: Tyler Yahn <codingalias@gmail.com> Co-authored-by: Damien Mathieu <42@dmathieu.com>
64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package metric // import "go.opentelemetry.io/otel/sdk/metric"
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import (
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"context"
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"runtime"
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"sync"
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"testing"
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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/sdk/metric/metricdata"
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)
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func TestFixedSizeExemplarConcurrentSafe(t *testing.T) {
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// Tests https://github.com/open-telemetry/opentelemetry-go/issues/5814
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t.Setenv("OTEL_METRICS_EXEMPLAR_FILTER", "always_on")
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r := NewManualReader()
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m := NewMeterProvider(WithReader(r)).Meter("exemplar-concurrency")
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// Use two instruments to get concurrent access to any shared globals.
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i0, err := m.Int64Counter("counter.0")
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require.NoError(t, err)
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i1, err := m.Int64Counter("counter.1")
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require.NoError(t, err)
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ctx, cancel := context.WithCancel(t.Context())
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add := func() {
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i0.Add(ctx, 1)
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i1.Add(ctx, 2)
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}
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goRoutines := max(10, runtime.NumCPU())
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var wg sync.WaitGroup
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for range goRoutines {
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wg.Add(1)
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go func() {
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defer wg.Done()
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for {
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select {
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case <-ctx.Done():
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return
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default:
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require.NotPanics(t, add)
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}
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}
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}()
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}
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const collections = 100
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var rm metricdata.ResourceMetrics
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for range collections {
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require.NotPanics(t, func() { _ = r.Collect(ctx, &rm) })
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}
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cancel()
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wg.Wait()
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}
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