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tracinghandler_test.go
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tracinghandler_test.go
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package handler
import (
"context"
"net/http"
"net/http/httptest"
"testing"
"github.com/stretchr/testify/assert"
ztrace "github.com/zeromicro/go-zero/core/trace"
"github.com/zeromicro/go-zero/rest/chain"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
func TestOtelHandler(t *testing.T) {
ztrace.StartAgent(ztrace.Config{
Name: "go-zero-test",
Endpoint: "http://localhost:14268/api/traces",
Batcher: "jaeger",
Sampler: 1.0,
})
for _, test := range []string{"", "bar"} {
t.Run(test, func(t *testing.T) {
h := chain.New(TracingHandler("foo", test)).Then(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := otel.GetTextMapPropagator().Extract(r.Context(), propagation.HeaderCarrier(r.Header))
spanCtx := trace.SpanContextFromContext(ctx)
assert.True(t, spanCtx.IsValid())
}))
ts := httptest.NewServer(h)
defer ts.Close()
client := ts.Client()
err := func(ctx context.Context) error {
ctx, span := otel.Tracer("httptrace/client").Start(ctx, "test")
defer span.End()
req, _ := http.NewRequest("GET", ts.URL, nil)
otel.GetTextMapPropagator().Inject(ctx, propagation.HeaderCarrier(req.Header))
res, err := client.Do(req)
assert.Nil(t, err)
return res.Body.Close()
}(context.Background())
assert.Nil(t, err)
})
}
}
func TestDontTracingSpanName(t *testing.T) {
ztrace.StartAgent(ztrace.Config{
Name: "go-zero-test",
Endpoint: "http://localhost:14268/api/traces",
Batcher: "jaeger",
Sampler: 1.0,
})
DontTracingSpanName("bar")
for _, test := range []string{"", "bar", "foo"} {
t.Run(test, func(t *testing.T) {
h := chain.New(TracingHandler("foo", test)).Then(
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
spanCtx := trace.SpanContextFromContext(r.Context())
if test == "bar" {
assert.False(t, spanCtx.IsValid())
return
}
assert.True(t, spanCtx.IsValid())
}))
ts := httptest.NewServer(h)
defer ts.Close()
client := ts.Client()
err := func(ctx context.Context) error {
ctx, span := otel.Tracer("httptrace/client").Start(ctx, "test")
defer span.End()
req, _ := http.NewRequest("GET", ts.URL, nil)
otel.GetTextMapPropagator().Inject(ctx, propagation.HeaderCarrier(req.Header))
res, err := client.Do(req)
assert.Nil(t, err)
return res.Body.Close()
}(context.Background())
assert.Nil(t, err)
})
}
}