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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package zpages
import (
"context"
"reflect"
"sort"
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/codes"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/trace"
)
func TestSpanProcessorDoNothing(t *testing.T) {
zsp := NewSpanProcessor()
assert.NoError(t, zsp.ForceFlush(context.Background()))
assert.NoError(t, zsp.Shutdown(context.Background()))
}
func TestSpanProcessor(t *testing.T) {
zsp := NewSpanProcessor()
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithSpanProcessor(zsp),
)
const spanName = "testSpan"
const numSpans = 9
tracer := tracerProvider.Tracer("test")
spans := createActiveSpans(tracer, spanName, numSpans)
// Sort the spans by the address pointer so we can compare.
sort.Slice(spans, func(i, j int) bool {
return reflect.ValueOf(spans[i]).Pointer() < reflect.ValueOf(spans[j]).Pointer()
})
require.Len(t, spans, numSpans)
activeSpans := zsp.activeSpans(spanName)
assert.Len(t, activeSpans, numSpans)
// Sort the activeSpans by the address pointer so we can compare.
sort.Slice(activeSpans, func(i, j int) bool {
return reflect.ValueOf(activeSpans[i]).Pointer() < reflect.ValueOf(activeSpans[j]).Pointer()
})
for i := range spans {
assert.Same(t, spans[i], activeSpans[i])
}
// No ended spans so there will be no error, no latency samples.
assert.Empty(t, zsp.errorSpans(spanName))
for i := 0; i < defaultBoundaries.numBuckets(); i++ {
assert.Empty(t, zsp.spansByLatency(spanName, i))
}
spansPM := zsp.spansPerMethod()
require.Len(t, spansPM, 1)
assert.Equal(t, numSpans, spansPM[spanName].activeSpans)
// End all Spans, they will end pretty fast, so we can only check that we have at least one in
// errors and one in latency samples.
for _, s := range spans {
s.End()
}
// Test that no more active spans.
assert.Empty(t, zsp.activeSpans(spanName))
assert.LessOrEqual(t, 1, len(zsp.errorSpans(spanName)))
numLatencySamples := 0
for i := 0; i < defaultBoundaries.numBuckets(); i++ {
numLatencySamples += len(zsp.spansByLatency(spanName, i))
}
assert.LessOrEqual(t, 1, numLatencySamples)
}
func TestSpanProcessorFuzzer(t *testing.T) {
zsp := NewSpanProcessor()
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithSpanProcessor(zsp),
)
const numIterations = 200
const numSpansPerIteration = 90
var wg sync.WaitGroup
wg.Add(4)
go func() {
for i := 0; i < numIterations; i++ {
assert.LessOrEqual(t, 0, len(zsp.spansPerMethod()))
assert.GreaterOrEqual(t, 2, len(zsp.spansPerMethod()))
createEndedSpans(tracerProvider.Tracer("test1"), "testSpan1", numSpansPerIteration)
// Call for spans names created by the other goroutines.
assert.LessOrEqual(t, 0, len(zsp.activeSpans("testSpan2")))
assert.LessOrEqual(t, 0, len(zsp.errorSpans("testSpan2")))
assert.LessOrEqual(t, 0, len(zsp.spansByLatency("testSpan2", 1)))
}
wg.Done()
}()
go func() {
for i := 0; i < numIterations; i++ {
assert.LessOrEqual(t, 0, len(zsp.spansPerMethod()))
assert.GreaterOrEqual(t, 2, len(zsp.spansPerMethod()))
createEndedSpans(tracerProvider.Tracer("test2"), "testSpan2", numSpansPerIteration)
// Call for spans names created by the other goroutines.
assert.LessOrEqual(t, 0, len(zsp.activeSpans("testSpan1")))
assert.LessOrEqual(t, 0, len(zsp.errorSpans("testSpan1")))
assert.LessOrEqual(t, 0, len(zsp.spansByLatency("testSpan1", 1)))
}
wg.Done()
}()
go func() {
for i := 0; i < numIterations; i++ {
assert.LessOrEqual(t, 0, len(zsp.spansPerMethod()))
assert.GreaterOrEqual(t, 2, len(zsp.spansPerMethod()))
createEndedSpans(tracerProvider.Tracer("test3"), "testSpan1", numSpansPerIteration)
// Call for spans names created by the other goroutines.
assert.LessOrEqual(t, 0, len(zsp.activeSpans("testSpan2")))
assert.LessOrEqual(t, 0, len(zsp.errorSpans("testSpan2")))
assert.LessOrEqual(t, 0, len(zsp.spansByLatency("testSpan2", 1)))
}
wg.Done()
}()
go func() {
for i := 0; i < numIterations; i++ {
assert.LessOrEqual(t, 0, len(zsp.spansPerMethod()))
assert.GreaterOrEqual(t, 2, len(zsp.spansPerMethod()))
createEndedSpans(tracerProvider.Tracer("test4"), "testSpan2", numSpansPerIteration)
// Call for spans names created by the other goroutines.
assert.LessOrEqual(t, 0, len(zsp.activeSpans("testSpan1")))
assert.LessOrEqual(t, 0, len(zsp.errorSpans("testSpan1")))
assert.LessOrEqual(t, 0, len(zsp.spansByLatency("testSpan1", 1)))
}
wg.Done()
}()
wg.Wait()
}
func TestSpanProcessorNegativeLatency(t *testing.T) {
zsp := NewSpanProcessor()
ts := &testSpan{
spanContext: trace.NewSpanContext(trace.SpanContextConfig{
TraceID: [16]byte{1, 2, 3, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 2, 1},
SpanID: [8]byte{1, 2, 3, 4, 5, 6, 7, 8},
TraceFlags: 1,
Remote: false,
}),
name: "test",
startTime: time.Unix(10, 0),
endTime: time.Unix(5, 0),
status: sdktrace.Status{
Code: codes.Ok,
Description: "",
},
}
zsp.OnStart(context.Background(), ts)
spansPM := zsp.spansPerMethod()
require.Len(t, spansPM, 1)
assert.Equal(t, 1, spansPM["test"].activeSpans)
zsp.OnEnd(ts)
spansPM = zsp.spansPerMethod()
require.Len(t, spansPM, 1)
assert.Equal(t, 1, spansPM["test"].latencySpans[0])
}
func TestSpanProcessorSpansByLatencyWrongIndex(t *testing.T) {
zsp := NewSpanProcessor()
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithSpanProcessor(zsp),
)
tracer := tracerProvider.Tracer("test")
createEndedSpans(tracer, "test", 6)
assert.Nil(t, zsp.spansByLatency("test", -1))
assert.Nil(t, zsp.spansByLatency("test", defaultBoundaries.numBuckets()))
}
func createEndedSpans(tracer trace.Tracer, spanName string, numSpans int) {
for i := 0; i < numSpans; i++ {
_, span := tracer.Start(context.Background(), spanName)
span.SetStatus(codes.Code(i%3), "")
span.End()
}
}
func createActiveSpans(tracer trace.Tracer, spanName string, numSpans int) []trace.Span {
var spans []trace.Span
for i := 0; i < numSpans; i++ {
_, span := tracer.Start(context.Background(), spanName)
span.SetStatus(codes.Code(i%3), "")
spans = append(spans, span)
}
return spans
}
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