43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package tracing
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import (
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"fmt"
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"net/http"
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"github.com/containous/traefik/log"
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"github.com/opentracing/opentracing-go"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/urfave/negroni"
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)
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type entryPointMiddleware struct {
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entryPoint string
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*Tracing
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}
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// NewEntryPoint creates a new middleware that the incoming request
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func (t *Tracing) NewEntryPoint(name string) negroni.Handler {
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log.Debug("Added entrypoint tracing middleware")
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return &entryPointMiddleware{Tracing: t, entryPoint: name}
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}
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func (e *entryPointMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
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opNameFunc := func(r *http.Request) string {
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return fmt.Sprintf("Entrypoint %s %s", e.entryPoint, r.Host)
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}
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ctx, _ := e.Extract(opentracing.HTTPHeaders, opentracing.HTTPHeadersCarrier(r.Header))
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span := e.StartSpan(opNameFunc(r), ext.RPCServerOption(ctx))
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ext.Component.Set(span, e.ServiceName)
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LogRequest(span, r)
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ext.SpanKindRPCServer.Set(span)
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w = &statusCodeTracker{w, 200}
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r = r.WithContext(opentracing.ContextWithSpan(r.Context(), span))
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next(w, r)
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LogResponseCode(span, w.(*statusCodeTracker).status)
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span.Finish()
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}
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