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101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package internal // import "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/internal"
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import (
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"context"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"go.opentelemetry.io/otel/sdk/metric"
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"go.opentelemetry.io/otel/sdk/metric/aggregation"
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"go.opentelemetry.io/otel/sdk/metric/metricdata"
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mpb "go.opentelemetry.io/proto/otlp/metrics/v1"
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)
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type client struct {
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// n is incremented by all Client methods. If these methods are called
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// concurrently this should fail tests run with the race detector.
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n int
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}
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func (c *client) Temporality(k metric.InstrumentKind) metricdata.Temporality {
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return metric.DefaultTemporalitySelector(k)
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}
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func (c *client) Aggregation(k metric.InstrumentKind) aggregation.Aggregation {
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return metric.DefaultAggregationSelector(k)
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}
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func (c *client) UploadMetrics(context.Context, *mpb.ResourceMetrics) error {
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c.n++
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return nil
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}
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func (c *client) ForceFlush(context.Context) error {
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c.n++
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return nil
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}
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func (c *client) Shutdown(context.Context) error {
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c.n++
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return nil
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}
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func TestExporterClientConcurrentSafe(t *testing.T) {
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const goroutines = 5
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exp := New(&client{})
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rm := new(metricdata.ResourceMetrics)
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ctx := context.Background()
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done := make(chan struct{})
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first := make(chan struct{}, goroutines)
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var wg sync.WaitGroup
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for i := 0; i < goroutines; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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assert.NoError(t, exp.Export(ctx, rm))
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assert.NoError(t, exp.ForceFlush(ctx))
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// Ensure some work is done before shutting down.
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first <- struct{}{}
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for {
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_ = exp.Export(ctx, rm)
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_ = exp.ForceFlush(ctx)
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select {
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case <-done:
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return
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default:
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}
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}
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}()
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}
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for i := 0; i < goroutines; i++ {
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<-first
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}
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close(first)
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assert.NoError(t, exp.Shutdown(ctx))
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assert.ErrorIs(t, exp.Shutdown(ctx), errShutdown)
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close(done)
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wg.Wait()
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}
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