mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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114 lines
3.3 KiB
Go
114 lines
3.3 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 pull_test
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import (
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"context"
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"runtime"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/api/kv"
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"go.opentelemetry.io/otel/api/label"
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"go.opentelemetry.io/otel/api/metric"
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export "go.opentelemetry.io/otel/sdk/export/metric"
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"go.opentelemetry.io/otel/sdk/metric/controller/pull"
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controllerTest "go.opentelemetry.io/otel/sdk/metric/controller/test"
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"go.opentelemetry.io/otel/sdk/metric/processor/test"
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selector "go.opentelemetry.io/otel/sdk/metric/selector/simple"
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)
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func TestPullNoCache(t *testing.T) {
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puller := pull.New(
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selector.NewWithExactDistribution(),
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export.CumulativeExporter,
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pull.WithCachePeriod(0),
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)
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ctx := context.Background()
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meter := puller.Provider().Meter("nocache")
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counter := metric.Must(meter).NewInt64Counter("counter")
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counter.Add(ctx, 10, kv.String("A", "B"))
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require.NoError(t, puller.Collect(ctx))
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records := test.NewOutput(label.DefaultEncoder())
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require.NoError(t, puller.ForEach(export.CumulativeExporter, records.AddRecord))
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require.EqualValues(t, map[string]float64{
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"counter/A=B/": 10,
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}, records.Map)
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counter.Add(ctx, 10, kv.String("A", "B"))
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require.NoError(t, puller.Collect(ctx))
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records = test.NewOutput(label.DefaultEncoder())
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require.NoError(t, puller.ForEach(export.CumulativeExporter, records.AddRecord))
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require.EqualValues(t, map[string]float64{
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"counter/A=B/": 20,
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}, records.Map)
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}
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func TestPullWithCache(t *testing.T) {
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puller := pull.New(
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selector.NewWithExactDistribution(),
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export.CumulativeExporter,
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pull.WithCachePeriod(time.Second),
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)
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mock := controllerTest.NewMockClock()
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puller.SetClock(mock)
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ctx := context.Background()
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meter := puller.Provider().Meter("nocache")
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counter := metric.Must(meter).NewInt64Counter("counter")
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counter.Add(ctx, 10, kv.String("A", "B"))
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require.NoError(t, puller.Collect(ctx))
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records := test.NewOutput(label.DefaultEncoder())
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require.NoError(t, puller.ForEach(export.CumulativeExporter, records.AddRecord))
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require.EqualValues(t, map[string]float64{
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"counter/A=B/": 10,
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}, records.Map)
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counter.Add(ctx, 10, kv.String("A", "B"))
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// Cached value!
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require.NoError(t, puller.Collect(ctx))
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records = test.NewOutput(label.DefaultEncoder())
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require.NoError(t, puller.ForEach(export.CumulativeExporter, records.AddRecord))
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require.EqualValues(t, map[string]float64{
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"counter/A=B/": 10,
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}, records.Map)
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mock.Add(time.Second)
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runtime.Gosched()
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// Re-computed value!
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require.NoError(t, puller.Collect(ctx))
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records = test.NewOutput(label.DefaultEncoder())
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require.NoError(t, puller.ForEach(export.CumulativeExporter, records.AddRecord))
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require.EqualValues(t, map[string]float64{
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"counter/A=B/": 20,
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}, records.Map)
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}
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