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27 lines
634 B
Go
27 lines
634 B
Go
package handlers
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import (
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"fmt"
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"net/http"
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"time"
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"github.com/docker/distribution/uuid"
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)
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// MakeCallIDMiddleware middleware tags a request with a uid
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func MakeCallIDMiddleware(next http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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if len(r.Header.Get("X-Call-Id")) == 0 {
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callID := uuid.Generate().String()
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r.Header.Add("X-Call-Id", callID)
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w.Header().Add("X-Call-Id", callID)
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}
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r.Header.Add("X-Start-Time", fmt.Sprintf("%d", start.UTC().UnixNano()))
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w.Header().Add("X-Start-Time", fmt.Sprintf("%d", start.UTC().UnixNano()))
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next(w, r)
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}
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}
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