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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,250 @@ | ||
| // Copyright The OpenTelemetry Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| package global // import "go.opentelemetry.io/otel/internal/global" | ||
|
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| import ( | ||
| "context" | ||
| "testing" | ||
|
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| "github.com/stretchr/testify/require" | ||
|
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| "go.opentelemetry.io/otel/metric" | ||
| "go.opentelemetry.io/otel/metric/embedded" | ||
| "go.opentelemetry.io/otel/metric/noop" | ||
| ) | ||
|
|
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| // Below, an alternate meter provider is constructed specifically to | ||
| // test the asynchronous instrument path. The alternative SDK uses | ||
| // no-op implementations for its synchronous instruments, and the six | ||
| // asynchronous instrument types are created here to test that | ||
| // instruments and callbacks are unwrapped inside this library. | ||
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| type altMeterProvider struct { | ||
| t *testing.T | ||
| meters []*altMeter | ||
| embedded.MeterProvider | ||
| } | ||
|
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| var _ metric.MeterProvider = &altMeterProvider{} | ||
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| func (amp *altMeterProvider) Meter(name string, opts ...metric.MeterOption) metric.Meter { | ||
| am := &altMeter{ | ||
| provider: amp, | ||
| } | ||
| amp.meters = append(amp.meters, am) | ||
| return am | ||
| } | ||
|
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| type altMeter struct { | ||
| provider *altMeterProvider | ||
| cbs []metric.Callback | ||
| embedded.Meter | ||
| } | ||
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| var _ metric.Meter = &altMeter{} | ||
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| type testAiCounter struct { | ||
| meter *altMeter | ||
| embedded.Int64ObservableCounter | ||
| metric.Int64Observable | ||
| } | ||
|
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| var _ metric.Int64ObservableCounter = &testAiCounter{} | ||
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| type testAfCounter struct { | ||
| meter *altMeter | ||
| embedded.Float64ObservableCounter | ||
| metric.Float64Observable | ||
| } | ||
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| var _ metric.Float64ObservableCounter = &testAfCounter{} | ||
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| type testAiUpDownCounter struct { | ||
| meter *altMeter | ||
| embedded.Int64ObservableUpDownCounter | ||
| metric.Int64Observable | ||
| } | ||
|
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| var _ metric.Int64ObservableUpDownCounter = &testAiUpDownCounter{} | ||
|
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| type testAfUpDownCounter struct { | ||
| meter *altMeter | ||
| embedded.Float64ObservableUpDownCounter | ||
| metric.Float64Observable | ||
| } | ||
|
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| var _ metric.Float64ObservableUpDownCounter = &testAfUpDownCounter{} | ||
|
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| type testAiGauge struct { | ||
| meter *altMeter | ||
| embedded.Int64ObservableGauge | ||
| metric.Int64Observable | ||
| } | ||
|
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| var _ metric.Int64ObservableGauge = &testAiGauge{} | ||
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| type testAfGauge struct { | ||
| meter *altMeter | ||
| embedded.Float64ObservableGauge | ||
| metric.Float64Observable | ||
| } | ||
|
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| var _ metric.Float64ObservableGauge = &testAfGauge{} | ||
|
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| type altRegistration struct { | ||
| cb metric.Callback | ||
| embedded.Registration | ||
| } | ||
|
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| type altObserver struct { | ||
| t *testing.T | ||
| embedded.Observer | ||
| } | ||
|
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| func (*altRegistration) Unregister() error { | ||
| return nil | ||
| } | ||
|
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| func (am *altMeter) Int64Counter(name string, _ ...metric.Int64CounterOption) (metric.Int64Counter, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Int64Counter(name) | ||
| } | ||
|
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| func (am *altMeter) Int64UpDownCounter(name string, _ ...metric.Int64UpDownCounterOption) (metric.Int64UpDownCounter, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Int64UpDownCounter(name) | ||
| } | ||
|
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| func (am *altMeter) Int64Histogram(name string, _ ...metric.Int64HistogramOption) (metric.Int64Histogram, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Int64Histogram(name) | ||
| } | ||
|
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| func (am *altMeter) Int64Gauge(name string, _ ...metric.Int64GaugeOption) (metric.Int64Gauge, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Int64Gauge(name) | ||
| } | ||
|
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| func (am *altMeter) Int64ObservableCounter(name string, options ...metric.Int64ObservableCounterOption) (metric.Int64ObservableCounter, error) { | ||
| return &testAiCounter{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) Int64ObservableUpDownCounter(name string, options ...metric.Int64ObservableUpDownCounterOption) (metric.Int64ObservableUpDownCounter, error) { | ||
| return &testAiUpDownCounter{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) Int64ObservableGauge(name string, options ...metric.Int64ObservableGaugeOption) (metric.Int64ObservableGauge, error) { | ||
| return &testAiGauge{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) Float64Counter(name string, _ ...metric.Float64CounterOption) (metric.Float64Counter, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Float64Counter(name) | ||
| } | ||
|
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| func (am *altMeter) Float64UpDownCounter(name string, _ ...metric.Float64UpDownCounterOption) (metric.Float64UpDownCounter, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Float64UpDownCounter(name) | ||
| } | ||
|
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| func (am *altMeter) Float64Histogram(name string, options ...metric.Float64HistogramOption) (metric.Float64Histogram, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Float64Histogram(name) | ||
| } | ||
|
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| func (am *altMeter) Float64Gauge(name string, options ...metric.Float64GaugeOption) (metric.Float64Gauge, error) { | ||
| return noop.NewMeterProvider().Meter("noop").Float64Gauge(name) | ||
| } | ||
|
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| func (am *altMeter) Float64ObservableCounter(name string, options ...metric.Float64ObservableCounterOption) (metric.Float64ObservableCounter, error) { | ||
| return &testAfCounter{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) Float64ObservableUpDownCounter(name string, options ...metric.Float64ObservableUpDownCounterOption) (metric.Float64ObservableUpDownCounter, error) { | ||
| return &testAfUpDownCounter{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) Float64ObservableGauge(name string, options ...metric.Float64ObservableGaugeOption) (metric.Float64ObservableGauge, error) { | ||
| return &testAfGauge{ | ||
| meter: am, | ||
| }, nil | ||
| } | ||
|
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| func (am *altMeter) RegisterCallback(f metric.Callback, instruments ...metric.Observable) (metric.Registration, error) { | ||
| for _, inst := range instruments { | ||
| switch inst.(type) { | ||
| case *testAiCounter, *testAfCounter, | ||
| *testAiUpDownCounter, *testAfUpDownCounter, | ||
| *testAiGauge, *testAfGauge: | ||
| // OK! | ||
| default: | ||
| am.provider.t.Errorf("unexpected type %T", inst) | ||
| } | ||
| } | ||
| am.cbs = append(am.cbs, f) | ||
| return &altRegistration{cb: f}, nil | ||
| } | ||
|
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| func (ao *altObserver) ObserveFloat64(inst metric.Float64Observable, _ float64, _ ...metric.ObserveOption) { | ||
| ao.observe(inst) | ||
| } | ||
|
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| func (ao *altObserver) ObserveInt64(inst metric.Int64Observable, _ int64, _ ...metric.ObserveOption) { | ||
| ao.observe(inst) | ||
| } | ||
|
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| func (ao *altObserver) observe(inst any) { | ||
| switch inst.(type) { | ||
| case *testAiCounter, *testAfCounter, | ||
| *testAiUpDownCounter, *testAfUpDownCounter, | ||
| *testAiGauge, *testAfGauge: | ||
| // OK! | ||
| default: | ||
| ao.t.Errorf("unexpected type %T", inst) | ||
| } | ||
| } | ||
|
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| func TestMeterDelegation(t *testing.T) { | ||
| ResetForTest(t) | ||
|
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| amp := &altMeterProvider{t: t} | ||
|
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| gm := MeterProvider().Meter("test") | ||
| aic, err := gm.Int64ObservableCounter("test_counter_i") | ||
| require.NoError(t, err) | ||
| afc, err := gm.Float64ObservableCounter("test_counter_f") | ||
| require.NoError(t, err) | ||
| aiu, err := gm.Int64ObservableUpDownCounter("test_updowncounter_i") | ||
| require.NoError(t, err) | ||
| afu, err := gm.Float64ObservableUpDownCounter("test_updowncounter_f") | ||
| require.NoError(t, err) | ||
| aig, err := gm.Int64ObservableGauge("test_gauge_i") | ||
| require.NoError(t, err) | ||
| afg, err := gm.Float64ObservableGauge("test_gauge_f") | ||
| require.NoError(t, err) | ||
|
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| _, err = gm.RegisterCallback(func(_ context.Context, obs metric.Observer) error { | ||
| obs.ObserveInt64(aic, 10) | ||
| obs.ObserveFloat64(afc, 10) | ||
| obs.ObserveInt64(aiu, 10) | ||
| obs.ObserveFloat64(afu, 10) | ||
| obs.ObserveInt64(aig, 10) | ||
| obs.ObserveFloat64(afg, 10) | ||
| return nil | ||
| }, aic, afc, aiu, afu, aig, afg) | ||
| require.NoError(t, err) | ||
|
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| SetMeterProvider(amp) | ||
|
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| ctx := context.Background() | ||
| ao := &altObserver{t: t} | ||
| for _, meter := range amp.meters { | ||
| for _, cb := range meter.cbs { | ||
| require.NoError(t, cb(ctx, ao)) | ||
| } | ||
| } | ||
| } |
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