68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
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package opentelemetry
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import (
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"compress/gzip"
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"context"
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"encoding/json"
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"io"
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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mtracing "github.com/traefik/traefik/v2/pkg/middlewares/tracing"
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"github.com/traefik/traefik/v2/pkg/tracing"
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"go.opentelemetry.io/collector/pdata/ptrace/ptraceotlp"
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)
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func TestTraceContextPropagation(t *testing.T) {
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t.Parallel()
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ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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gzr, err := gzip.NewReader(r.Body)
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require.NoError(t, err)
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body, err := io.ReadAll(gzr)
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require.NoError(t, err)
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req := ptraceotlp.NewExportRequest()
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err = req.UnmarshalProto(body)
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require.NoError(t, err)
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marshalledReq, err := json.Marshal(req)
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require.NoError(t, err)
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bodyStr := string(marshalledReq)
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assert.Regexp(t, `("traceId":"00000000000000000000000000000001")`, bodyStr)
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assert.Regexp(t, `("parentSpanId":"0000000000000001")`, bodyStr)
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assert.Regexp(t, `("traceState":"foo=bar")`, bodyStr)
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}))
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defer ts.Close()
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cfg := Config{
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Address: strings.TrimPrefix(ts.URL, "http://"),
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Insecure: true,
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}
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newTracing, err := tracing.NewTracing("", 0, &cfg)
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require.NoError(t, err)
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defer newTracing.Close()
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req := httptest.NewRequest(http.MethodGet, "http://www.test.com", nil)
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req.Header.Set("traceparent", "00-00000000000000000000000000000001-0000000000000001-00")
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req.Header.Set("tracestate", "foo=bar")
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rw := httptest.NewRecorder()
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var forwarded bool
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next := http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
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forwarded = true
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})
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handler := mtracing.NewEntryPoint(context.Background(), newTracing, "test", next)
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handler.ServeHTTP(rw, req)
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require.True(t, forwarded)
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}
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