frostfs-api-go/pkg/tracing/propagator_test.go

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package tracing
import (
"context"
"encoding/hex"
"math/rand"
"testing"
"github.com/stretchr/testify/require"
"go.opentelemetry.io/otel/trace"
)
type testCarrier struct {
Values map[string]string
}
func (c *testCarrier) Get(key string) string {
return c.Values[key]
}
func (c *testCarrier) Set(key string, value string) {
c.Values[key] = value
}
func (c *testCarrier) Keys() []string {
res := make([]string, 0, len(c.Values))
for k := range c.Values {
res = append(res, k)
}
return res
}
var p = &propagator{}
func TestPropagator_Inject(t *testing.T) {
t.Run("injects trace_id and span_id if valid", func(t *testing.T) {
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
spanConfig := trace.SpanContextConfig{}
spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
spanConfig.TraceFlags = trace.FlagsSampled
ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
c := &testCarrier{
Values: make(map[string]string),
}
p.Inject(ctx, c)
require.Equal(t, 3, len(c.Values), "not all headers were saved")
require.Equal(t, traceIDHex, c.Values[traceIDHeader], "unexpected trace id")
require.Equal(t, spanIDHex, c.Values[spanIDHeader], "unexpected span id")
require.Equal(t, "1", c.Values[flagsHeader], "unexpected flags")
})
t.Run("doesn't injects if trace_id is invalid", func(t *testing.T) {
traceIDBytes := make([]byte, 16)
traceIDHex := hex.EncodeToString(traceIDBytes)
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
spanConfig := trace.SpanContextConfig{}
spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
spanConfig.TraceFlags = trace.FlagsSampled
ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
c := &testCarrier{
Values: make(map[string]string),
}
p.Inject(ctx, c)
require.Equal(t, 0, len(c.Values), "some headers were saved")
})
t.Run("doesn't injects if span_id is invalid", func(t *testing.T) {
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
spanIDBytes := make([]byte, 8)
spanIDHex := hex.EncodeToString(spanIDBytes)
spanConfig := trace.SpanContextConfig{}
spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
spanConfig.TraceFlags = trace.FlagsSampled
ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
c := &testCarrier{
Values: make(map[string]string),
}
p.Inject(ctx, c)
require.Equal(t, 0, len(c.Values), "some headers were saved")
})
t.Run("injects flags if no flags specified", func(t *testing.T) {
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
spanConfig := trace.SpanContextConfig{}
spanConfig.TraceID, _ = trace.TraceIDFromHex(traceIDHex)
spanConfig.SpanID, _ = trace.SpanIDFromHex(spanIDHex)
ctx := trace.ContextWithRemoteSpanContext(context.Background(), trace.NewSpanContext(spanConfig))
c := &testCarrier{
Values: make(map[string]string),
}
p.Inject(ctx, c)
require.Equal(t, 3, len(c.Values), "not all headers were saved")
require.Equal(t, traceIDHex, c.Values[traceIDHeader], "unexpected trace id")
require.Equal(t, spanIDHex, c.Values[spanIDHeader], "unexpected span id")
require.Equal(t, "0", c.Values[flagsHeader], "unexpected flags")
})
}
func TestPropagator_Extract(t *testing.T) {
t.Run("extracts if set", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
c.Values[traceIDHeader] = traceIDHex
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
c.Values[spanIDHeader] = spanIDHex
c.Values[flagsHeader] = "1"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.True(t, sc.HasTraceID(), "trace_id was not set")
require.Equal(t, traceIDHex, sc.TraceID().String(), "trace_id doesn't match")
require.True(t, sc.HasSpanID(), "span_id was not set")
require.Equal(t, spanIDHex, sc.SpanID().String(), "span_id doesn't match")
require.True(t, sc.IsSampled(), "sampled was not set")
})
t.Run("not extracts if only trace_id defined", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
c.Values[traceIDHeader] = traceIDHex
c.Values[flagsHeader] = "1"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.False(t, sc.HasTraceID(), "trace_id was set")
require.False(t, sc.HasSpanID(), "span_id was set")
require.False(t, sc.IsSampled(), "sampled was set")
})
t.Run("not extracts if only span_id defined", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
c.Values[spanIDHeader] = spanIDHex
c.Values[flagsHeader] = "1"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.False(t, sc.HasTraceID(), "trace_id was set")
require.False(t, sc.HasSpanID(), "span_id was set")
require.False(t, sc.IsSampled(), "sampled was set")
})
t.Run("not extracts if trace_id is in invalid", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
c.Values[traceIDHeader] = "loren ipsum"
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
c.Values[spanIDHeader] = spanIDHex
c.Values[flagsHeader] = "1"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.False(t, sc.HasTraceID(), "trace_id was set")
require.False(t, sc.HasSpanID(), "span_id was set")
require.False(t, sc.IsSampled(), "sampled was set")
})
t.Run("not extracts if span_id is invalid", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
c.Values[spanIDHeader] = "loren ipsum"
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
c.Values[traceIDHeader] = traceIDHex
c.Values[flagsHeader] = "1"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.False(t, sc.HasTraceID(), "trace_id was set")
require.False(t, sc.HasSpanID(), "span_id was set")
require.False(t, sc.IsSampled(), "sampled was set")
})
t.Run("not extracts if flags is invalid", func(t *testing.T) {
c := &testCarrier{
Values: make(map[string]string),
}
traceIDBytes := make([]byte, 16)
rand.Read(traceIDBytes)
traceIDHex := hex.EncodeToString(traceIDBytes)
c.Values[traceIDHeader] = traceIDHex
spanIDBytes := make([]byte, 8)
rand.Read(spanIDBytes)
spanIDHex := hex.EncodeToString(spanIDBytes)
c.Values[spanIDHeader] = spanIDHex
c.Values[flagsHeader] = "loren ipsum"
ctx := p.Extract(context.Background(), c)
sc := trace.SpanFromContext(ctx).SpanContext()
require.False(t, sc.HasTraceID(), "trace_id was set")
require.False(t, sc.HasSpanID(), "span_id was set")
require.False(t, sc.IsSampled(), "sampled was set")
})
}