mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
1f5b159161
* Refactor golangci-lint conf Order settings alphabetically. * Add revive settings to golangci conf * Check blank imports * Check bool-literal-in-expr * Check constant-logical-expr * Check context-as-argument * Check context-key-type * Check deep-exit * Check defer * Check dot-imports * Check duplicated-imports * Check early-return * Check empty-block * Check empty-lines * Check error-naming * Check error-return * Check error-strings * Check errorf * Stop ignoring context first arg in tests * Check exported comments * Check flag-parameter * Check identical branches * Check if-return * Check increment-decrement * Check indent-error-flow * Check deny list of go imports * Check import shadowing * Check package comments * Check range * Check range val in closure * Check range val address * Check redefines builtin id * Check string-format * Check struct tag * Check superfluous else * Check time equal * Check var naming * Check var declaration * Check unconditional recursion * Check unexported return * Check unhandled errors * Check unnecessary stmt * Check unnecessary break * Check waitgroup by value * Exclude deep-exit check in example*_test.go files
260 lines
8.0 KiB
Go
260 lines
8.0 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 global // import "go.opentelemetry.io/otel/metric/internal/global"
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import (
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"context"
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"fmt"
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"sync"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/metric"
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"go.opentelemetry.io/otel/metric/instrument"
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"go.opentelemetry.io/otel/metric/instrument/asyncfloat64"
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"go.opentelemetry.io/otel/metric/instrument/syncfloat64"
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)
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func TestMeterProviderRace(t *testing.T) {
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mp := &meterProvider{}
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finish := make(chan struct{})
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go func() {
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for i := 0; ; i++ {
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mp.Meter(fmt.Sprintf("a%d", i))
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select {
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case <-finish:
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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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mp.setDelegate(metric.NewNoopMeterProvider())
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close(finish)
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}
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func TestMeterRace(t *testing.T) {
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mtr := &meter{}
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wg := &sync.WaitGroup{}
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wg.Add(1)
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finish := make(chan struct{})
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go func() {
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for i, once := 0, false; ; i++ {
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name := fmt.Sprintf("a%d", i)
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_, _ = mtr.AsyncFloat64().Counter(name)
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_, _ = mtr.AsyncFloat64().UpDownCounter(name)
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_, _ = mtr.AsyncFloat64().Gauge(name)
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_, _ = mtr.AsyncInt64().Counter(name)
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_, _ = mtr.AsyncInt64().UpDownCounter(name)
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_, _ = mtr.AsyncInt64().Gauge(name)
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_, _ = mtr.SyncFloat64().Counter(name)
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_, _ = mtr.SyncFloat64().UpDownCounter(name)
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_, _ = mtr.SyncFloat64().Histogram(name)
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_, _ = mtr.SyncInt64().Counter(name)
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_, _ = mtr.SyncInt64().UpDownCounter(name)
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_, _ = mtr.SyncInt64().Histogram(name)
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_ = mtr.RegisterCallback(nil, func(ctx context.Context) {})
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if !once {
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wg.Done()
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once = true
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}
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select {
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case <-finish:
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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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wg.Wait()
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mtr.setDelegate(metric.NewNoopMeterProvider())
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close(finish)
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}
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func testSetupAllInstrumentTypes(t *testing.T, m metric.Meter) (syncfloat64.Counter, asyncfloat64.Counter) {
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afcounter, err := m.AsyncFloat64().Counter("test_Async_Counter")
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require.NoError(t, err)
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_, err = m.AsyncFloat64().UpDownCounter("test_Async_UpDownCounter")
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assert.NoError(t, err)
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_, err = m.AsyncFloat64().Gauge("test_Async_Gauge")
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assert.NoError(t, err)
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_, err = m.AsyncInt64().Counter("test_Async_Counter")
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assert.NoError(t, err)
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_, err = m.AsyncInt64().UpDownCounter("test_Async_UpDownCounter")
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assert.NoError(t, err)
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_, err = m.AsyncInt64().Gauge("test_Async_Gauge")
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assert.NoError(t, err)
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require.NoError(t, m.RegisterCallback([]instrument.Asynchronous{afcounter}, func(ctx context.Context) {
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afcounter.Observe(ctx, 3)
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}))
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sfcounter, err := m.SyncFloat64().Counter("test_Async_Counter")
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require.NoError(t, err)
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_, err = m.SyncFloat64().UpDownCounter("test_Async_UpDownCounter")
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assert.NoError(t, err)
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_, err = m.SyncFloat64().Histogram("test_Async_Histogram")
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assert.NoError(t, err)
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_, err = m.SyncInt64().Counter("test_Async_Counter")
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assert.NoError(t, err)
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_, err = m.SyncInt64().UpDownCounter("test_Async_UpDownCounter")
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assert.NoError(t, err)
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_, err = m.SyncInt64().Histogram("test_Async_Histogram")
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assert.NoError(t, err)
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return sfcounter, afcounter
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}
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// This is to emulate a read from an exporter.
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func testCollect(t *testing.T, m metric.Meter) {
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if tMeter, ok := m.(*meter); ok {
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m, ok = tMeter.delegate.Load().(metric.Meter)
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if !ok {
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t.Error("meter was not delegated")
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return
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}
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}
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tMeter, ok := m.(*testMeter)
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if !ok {
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t.Error("collect called on non-test Meter")
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return
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}
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tMeter.collect()
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}
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func TestMeterProviderDelegatesCalls(t *testing.T) {
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// The global MeterProvider should directly call the underlying MeterProvider
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// if it is set prior to Meter() being called.
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// globalMeterProvider := otel.GetMeterProvider
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globalMeterProvider := &meterProvider{}
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mp := &testMeterProvider{}
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// otel.SetMeterProvider(mp)
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globalMeterProvider.setDelegate(mp)
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assert.Equal(t, 0, mp.count)
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meter := globalMeterProvider.Meter("go.opentelemetry.io/otel/metric/internal/global/meter_test")
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ctr, actr := testSetupAllInstrumentTypes(t, meter)
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ctr.Add(context.Background(), 5)
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testCollect(t, meter) // This is a hacky way to emulate a read from an exporter
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// Calls to Meter() after setDelegate() should be executed by the delegate
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require.IsType(t, &testMeter{}, meter)
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tMeter := meter.(*testMeter)
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assert.Equal(t, 3, tMeter.afCount)
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assert.Equal(t, 3, tMeter.aiCount)
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assert.Equal(t, 3, tMeter.sfCount)
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assert.Equal(t, 3, tMeter.siCount)
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assert.Equal(t, 1, len(tMeter.callbacks))
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// Because the Meter was provided by testmeterProvider it should also return our test instrument
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require.IsType(t, &testCountingFloatInstrument{}, ctr, "the meter did not delegate calls to the meter")
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assert.Equal(t, 1, ctr.(*testCountingFloatInstrument).count)
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require.IsType(t, &testCountingFloatInstrument{}, actr, "the meter did not delegate calls to the meter")
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assert.Equal(t, 1, actr.(*testCountingFloatInstrument).count)
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assert.Equal(t, 1, mp.count)
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}
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func TestMeterDelegatesCalls(t *testing.T) {
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// The global MeterProvider should directly provide a Meter instance that
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// can be updated. If the SetMeterProvider is called after a Meter was
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// obtained, but before instruments only the instrument should be generated
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// by the delegated type.
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globalMeterProvider := &meterProvider{}
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mp := &testMeterProvider{}
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assert.Equal(t, 0, mp.count)
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m := globalMeterProvider.Meter("go.opentelemetry.io/otel/metric/internal/global/meter_test")
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globalMeterProvider.setDelegate(mp)
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ctr, actr := testSetupAllInstrumentTypes(t, m)
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ctr.Add(context.Background(), 5)
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testCollect(t, m) // This is a hacky way to emulate a read from an exporter
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// Calls to Meter methods after setDelegate() should be executed by the delegate
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require.IsType(t, &meter{}, m)
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tMeter := m.(*meter).delegate.Load().(*testMeter)
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require.NotNil(t, tMeter)
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assert.Equal(t, 3, tMeter.afCount)
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assert.Equal(t, 3, tMeter.aiCount)
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assert.Equal(t, 3, tMeter.sfCount)
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assert.Equal(t, 3, tMeter.siCount)
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// Because the Meter was provided by testmeterProvider it should also return our test instrument
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require.IsType(t, &testCountingFloatInstrument{}, ctr, "the meter did not delegate calls to the meter")
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assert.Equal(t, 1, ctr.(*testCountingFloatInstrument).count)
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// Because the Meter was provided by testmeterProvider it should also return our test instrument
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require.IsType(t, &testCountingFloatInstrument{}, actr, "the meter did not delegate calls to the meter")
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assert.Equal(t, 1, actr.(*testCountingFloatInstrument).count)
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assert.Equal(t, 1, mp.count)
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}
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func TestMeterDefersDelegations(t *testing.T) {
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// If SetMeterProvider is called after instruments are registered, the
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// instruments should be recreated with the new meter.
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// globalMeterProvider := otel.GetMeterProvider
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globalMeterProvider := &meterProvider{}
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m := globalMeterProvider.Meter("go.opentelemetry.io/otel/metric/internal/global/meter_test")
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ctr, actr := testSetupAllInstrumentTypes(t, m)
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ctr.Add(context.Background(), 5)
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mp := &testMeterProvider{}
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// otel.SetMeterProvider(mp)
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globalMeterProvider.setDelegate(mp)
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testCollect(t, m) // This is a hacky way to emulate a read from an exporter
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// Calls to Meter() before setDelegate() should be the delegated type
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require.IsType(t, &meter{}, m)
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tMeter := m.(*meter).delegate.Load().(*testMeter)
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require.NotNil(t, tMeter)
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assert.Equal(t, 3, tMeter.afCount)
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assert.Equal(t, 3, tMeter.aiCount)
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assert.Equal(t, 3, tMeter.sfCount)
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assert.Equal(t, 3, tMeter.siCount)
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// Because the Meter was a delegate it should return a delegated instrument
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assert.IsType(t, &sfCounter{}, ctr)
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assert.IsType(t, &afCounter{}, actr)
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assert.Equal(t, 1, mp.count)
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}
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