func setRequestIDHeaderMiddleware(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
requestIDHeader, _ := config.GetString("request-id-header")
if requestIDHeader == "" {
next(w, r)
return
}
requestID := r.Header.Get(requestIDHeader)
if requestID == "" {
unparsedID, err := uuid.NewV4()
if err != nil {
log.Errorf("unable to generate request id: %s", err)
next(w, r)
return
}
requestID = unparsedID.String()
}
context.SetRequestID(r, requestIDHeader, requestID)
next(w, r)
}
func (s *S) TestLoggerMiddlewareWithRequestID(c *check.C) {
config.Set("request-id-header", "Request-ID")
defer config.Unset("request-id-header")
recorder := httptest.NewRecorder()
request, err := http.NewRequest("PUT", "/my/path", nil)
c.Assert(err, check.IsNil)
context.SetRequestID(request, "Request-ID", "my-rid")
h, handlerLog := doHandler()
handlerLog.sleep = 100 * time.Millisecond
handlerLog.response = http.StatusOK
var out bytes.Buffer
middle := loggerMiddleware{
logger: log.New(&out, "", 0),
}
middle.ServeHTTP(negroni.NewResponseWriter(recorder), request, h)
c.Assert(handlerLog.called, check.Equals, true)
timePart := time.Now().Format(time.RFC3339Nano)[:19]
c.Assert(out.String(), check.Matches, fmt.Sprintf(`%s\..+? PUT /my/path 200 in 1\d{2}\.\d+ms \[Request-ID: my-rid\]`+"\n", timePart))
}