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@@ -35,9 +35,17 @@ func CaptureMetrics(hnd http.Handler, w http.ResponseWriter, r *http.Request) Me
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// sugar on top of this func), but is a more usable interface if your
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// application doesn't use the Go http.Handler interface.
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func CaptureMetricsFn(w http.ResponseWriter, fn func(http.ResponseWriter)) Metrics {
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+ m := Metrics{Code: http.StatusOK}
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+ m.CaptureMetrics(w, fn)
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+ return m
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+}
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+
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+// CaptureMetrics wraps w and calls fn with the wrapped w and updates
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+// Metrics m with the resulting metrics. This is similar to CaptureMetricsFn,
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+// but allows one to customize starting Metrics object.
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+func (m *Metrics) CaptureMetrics(w http.ResponseWriter, fn func(http.ResponseWriter)) {
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var (
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start = time.Now()
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- m = Metrics{Code: http.StatusOK}
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headerWritten bool
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hooks = Hooks{
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WriteHeader: func(next WriteHeaderFunc) WriteHeaderFunc {
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@@ -74,6 +82,5 @@ func CaptureMetricsFn(w http.ResponseWriter, fn func(http.ResponseWriter)) Metri
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)
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fn(Wrap(w, hooks))
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- m.Duration = time.Since(start)
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- return m
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+ m.Duration += time.Since(start)
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}
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