/
otlp_test.go
440 lines (379 loc) · 12.3 KB
/
otlp_test.go
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// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otlp_test
import (
"context"
"errors"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/otlp"
"go.opentelemetry.io/otel/exporters/otlp/internal/transform"
metricsdk "go.opentelemetry.io/otel/sdk/export/metric"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
metricpb "go.opentelemetry.io/proto/otlp/metrics/v1"
tracepb "go.opentelemetry.io/proto/otlp/trace/v1"
)
func stubSpanSnapshot(count int) []*tracesdk.SpanSnapshot {
spans := make([]*tracesdk.SpanSnapshot, 0, count)
for i := 0; i < count; i++ {
spans = append(spans, new(tracesdk.SpanSnapshot))
}
return spans
}
type stubCheckpointSet struct {
limit int
}
var _ metricsdk.CheckpointSet = stubCheckpointSet{}
func (s stubCheckpointSet) ForEach(kindSelector metricsdk.ExportKindSelector, recordFunc func(metricsdk.Record) error) error {
for i := 0; i < s.limit; i++ {
if err := recordFunc(metricsdk.Record{}); err != nil {
return err
}
}
return nil
}
func (stubCheckpointSet) Lock() {}
func (stubCheckpointSet) Unlock() {}
func (stubCheckpointSet) RLock() {}
func (stubCheckpointSet) RUnlock() {}
type stubProtocolDriver struct {
started int
stopped int
tracesExported int
metricsExported int
injectedStartError error
injectedStopError error
rm []metricsdk.Record
rs []tracesdk.SpanSnapshot
}
var _ otlp.ProtocolDriver = (*stubProtocolDriver)(nil)
func (m *stubProtocolDriver) Start(ctx context.Context) error {
m.started++
select {
case <-ctx.Done():
return ctx.Err()
default:
return m.injectedStartError
}
}
func (m *stubProtocolDriver) Stop(ctx context.Context) error {
m.stopped++
select {
case <-ctx.Done():
return ctx.Err()
default:
return m.injectedStopError
}
}
func (m *stubProtocolDriver) ExportMetrics(parent context.Context, cps metricsdk.CheckpointSet, selector metricsdk.ExportKindSelector) error {
m.metricsExported++
return cps.ForEach(selector, func(record metricsdk.Record) error {
m.rm = append(m.rm, record)
return nil
})
}
func (m *stubProtocolDriver) ExportTraces(ctx context.Context, ss []*tracesdk.SpanSnapshot) error {
m.tracesExported++
for _, rs := range ss {
if rs == nil {
continue
}
m.rs = append(m.rs, *rs)
}
return nil
}
type stubTransformingProtocolDriver struct {
rm []*metricpb.ResourceMetrics
rs []*tracepb.ResourceSpans
}
var _ otlp.ProtocolDriver = (*stubTransformingProtocolDriver)(nil)
func (m *stubTransformingProtocolDriver) Start(ctx context.Context) error {
return nil
}
func (m *stubTransformingProtocolDriver) Stop(ctx context.Context) error {
return nil
}
func (m *stubTransformingProtocolDriver) ExportMetrics(parent context.Context, cps metricsdk.CheckpointSet, selector metricsdk.ExportKindSelector) error {
rms, err := transform.CheckpointSet(parent, selector, cps, 1)
if err != nil {
return err
}
for _, rm := range rms {
if rm == nil {
continue
}
m.rm = append(m.rm, rm)
}
return nil
}
func (m *stubTransformingProtocolDriver) ExportTraces(ctx context.Context, ss []*tracesdk.SpanSnapshot) error {
for _, rs := range transform.SpanData(ss) {
if rs == nil {
continue
}
m.rs = append(m.rs, rs)
}
return nil
}
func (m *stubTransformingProtocolDriver) Reset() {
m.rm = nil
m.rs = nil
}
func newExporter(t *testing.T, opts ...otlp.ExporterOption) (*otlp.Exporter, *stubTransformingProtocolDriver) {
driver := &stubTransformingProtocolDriver{}
exp, err := otlp.NewExporter(context.Background(), driver, opts...)
require.NoError(t, err)
return exp, driver
}
func TestExporterShutdownHonorsTimeout(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
defer cancel()
e := otlp.NewUnstartedExporter(&stubProtocolDriver{})
if err := e.Start(ctx); err != nil {
t.Fatalf("failed to start exporter: %v", err)
}
innerCtx, innerCancel := context.WithTimeout(ctx, time.Microsecond)
<-time.After(time.Second)
if err := e.Shutdown(innerCtx); err == nil {
t.Error("expected context DeadlineExceeded error, got nil")
} else if !errors.Is(err, context.DeadlineExceeded) {
t.Errorf("expected context DeadlineExceeded error, got %v", err)
}
innerCancel()
}
func TestExporterShutdownHonorsCancel(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
defer cancel()
e := otlp.NewUnstartedExporter(&stubProtocolDriver{})
if err := e.Start(ctx); err != nil {
t.Fatalf("failed to start exporter: %v", err)
}
var innerCancel context.CancelFunc
ctx, innerCancel = context.WithCancel(ctx)
innerCancel()
if err := e.Shutdown(ctx); err == nil {
t.Error("expected context canceled error, got nil")
} else if !errors.Is(err, context.Canceled) {
t.Errorf("expected context canceled error, got %v", err)
}
}
func TestExporterShutdownNoError(t *testing.T) {
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
defer cancel()
e := otlp.NewUnstartedExporter(&stubProtocolDriver{})
if err := e.Start(ctx); err != nil {
t.Fatalf("failed to start exporter: %v", err)
}
if err := e.Shutdown(ctx); err != nil {
t.Errorf("shutdown errored: expected nil, got %v", err)
}
}
func TestExporterShutdownManyTimes(t *testing.T) {
ctx := context.Background()
e, err := otlp.NewExporter(ctx, &stubProtocolDriver{})
if err != nil {
t.Fatalf("failed to start an exporter: %v", err)
}
ch := make(chan struct{})
wg := sync.WaitGroup{}
const num int = 20
wg.Add(num)
errs := make([]error, num)
for i := 0; i < num; i++ {
go func(idx int) {
defer wg.Done()
<-ch
errs[idx] = e.Shutdown(ctx)
}(i)
}
close(ch)
wg.Wait()
for _, err := range errs {
if err != nil {
t.Fatalf("failed to shutdown exporter: %v", err)
}
}
}
func TestInstallNewPipeline(t *testing.T) {
ctx := context.Background()
_, _, _, err := otlp.InstallNewPipeline(ctx, &stubProtocolDriver{})
assert.NoError(t, err)
assert.IsType(t, &tracesdk.TracerProvider{}, otel.GetTracerProvider())
}
func TestNewExportPipeline(t *testing.T) {
testCases := []struct {
name string
expOpts []otlp.ExporterOption
testSpanSampling bool
}{
{
name: "simple pipeline",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
_, tp, _, err := otlp.NewExportPipeline(
context.Background(),
&stubProtocolDriver{},
tc.expOpts...,
)
assert.NoError(t, err)
assert.NotEqual(t, tp, otel.GetTracerProvider())
_, span := tp.Tracer("otlp test").Start(context.Background(), tc.name)
spanCtx := span.SpanContext()
assert.Equal(t, true, spanCtx.IsSampled())
span.End()
})
}
}
func TestSplitDriver(t *testing.T) {
recordCount := 5
spanCount := 7
assertExport := func(t testing.TB, ctx context.Context, driver otlp.ProtocolDriver) {
t.Helper()
assert.NoError(t, driver.ExportMetrics(ctx, stubCheckpointSet{recordCount}, metricsdk.StatelessExportKindSelector()))
assert.NoError(t, driver.ExportTraces(ctx, stubSpanSnapshot(spanCount)))
}
t.Run("with metric/trace drivers configured", func(t *testing.T) {
driverTraces := &stubProtocolDriver{}
driverMetrics := &stubProtocolDriver{}
driver := otlp.NewSplitDriver(otlp.WithMetricDriver(driverMetrics), otlp.WithTraceDriver(driverTraces))
ctx := context.Background()
assert.NoError(t, driver.Start(ctx))
assert.Equal(t, 1, driverTraces.started)
assert.Equal(t, 1, driverMetrics.started)
assert.Equal(t, 0, driverTraces.stopped)
assert.Equal(t, 0, driverMetrics.stopped)
assert.Equal(t, 0, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 0, driverMetrics.metricsExported)
assertExport(t, ctx, driver)
assert.Len(t, driverTraces.rm, 0)
assert.Len(t, driverTraces.rs, spanCount)
assert.Len(t, driverMetrics.rm, recordCount)
assert.Len(t, driverMetrics.rs, 0)
assert.Equal(t, 1, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 1, driverMetrics.metricsExported)
assert.NoError(t, driver.Stop(ctx))
assert.Equal(t, 1, driverTraces.started)
assert.Equal(t, 1, driverMetrics.started)
assert.Equal(t, 1, driverTraces.stopped)
assert.Equal(t, 1, driverMetrics.stopped)
assert.Equal(t, 1, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 1, driverMetrics.metricsExported)
})
t.Run("with just metric driver", func(t *testing.T) {
driverMetrics := &stubProtocolDriver{}
driver := otlp.NewSplitDriver(otlp.WithMetricDriver(driverMetrics))
ctx := context.Background()
assert.NoError(t, driver.Start(ctx))
assert.Equal(t, 1, driverMetrics.started)
assert.Equal(t, 0, driverMetrics.stopped)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 0, driverMetrics.metricsExported)
assertExport(t, ctx, driver)
assert.Len(t, driverMetrics.rm, recordCount)
assert.Len(t, driverMetrics.rs, 0)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 1, driverMetrics.metricsExported)
assert.NoError(t, driver.Stop(ctx))
assert.Equal(t, 1, driverMetrics.started)
assert.Equal(t, 1, driverMetrics.stopped)
assert.Equal(t, 0, driverMetrics.tracesExported)
assert.Equal(t, 1, driverMetrics.metricsExported)
})
t.Run("with just trace driver", func(t *testing.T) {
driverTraces := &stubProtocolDriver{}
driver := otlp.NewSplitDriver(otlp.WithTraceDriver(driverTraces))
ctx := context.Background()
assert.NoError(t, driver.Start(ctx))
assert.Equal(t, 1, driverTraces.started)
assert.Equal(t, 0, driverTraces.stopped)
assert.Equal(t, 0, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
assertExport(t, ctx, driver)
assert.Len(t, driverTraces.rm, 0)
assert.Len(t, driverTraces.rs, spanCount)
assert.Equal(t, 1, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
assert.NoError(t, driver.Stop(ctx))
assert.Equal(t, 1, driverTraces.started)
assert.Equal(t, 1, driverTraces.stopped)
assert.Equal(t, 1, driverTraces.tracesExported)
assert.Equal(t, 0, driverTraces.metricsExported)
})
t.Run("with no drivers configured", func(t *testing.T) {
driver := otlp.NewSplitDriver()
ctx := context.Background()
assert.NoError(t, driver.Start(ctx))
assert.NoError(t, driver.ExportMetrics(ctx, stubCheckpointSet{recordCount}, metricsdk.StatelessExportKindSelector()))
assert.NoError(t, driver.ExportTraces(ctx, stubSpanSnapshot(spanCount)))
assert.NoError(t, driver.Stop(ctx))
})
}
func TestSplitDriverFail(t *testing.T) {
ctx := context.Background()
for i := 0; i < 16; i++ {
var (
errStartMetric error
errStartTrace error
errStopMetric error
errStopTrace error
)
if (i & 1) != 0 {
errStartTrace = errors.New("trace start failed")
}
if (i & 2) != 0 {
errStopTrace = errors.New("trace stop failed")
}
if (i & 4) != 0 {
errStartMetric = errors.New("metric start failed")
}
if (i & 8) != 0 {
errStopMetric = errors.New("metric stop failed")
}
shouldStartFail := errStartTrace != nil || errStartMetric != nil
shouldStopFail := errStopTrace != nil || errStopMetric != nil
driverTraces := &stubProtocolDriver{
injectedStartError: errStartTrace,
injectedStopError: errStopTrace,
}
driverMetrics := &stubProtocolDriver{
injectedStartError: errStartMetric,
injectedStopError: errStopMetric,
}
driver := otlp.NewSplitDriver(otlp.WithMetricDriver(driverMetrics), otlp.WithTraceDriver(driverTraces))
errStart := driver.Start(ctx)
if shouldStartFail {
assert.Error(t, errStart)
} else {
assert.NoError(t, errStart)
}
errStop := driver.Stop(ctx)
if shouldStopFail {
assert.Error(t, errStop)
} else {
assert.NoError(t, errStop)
}
}
}