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Add metrics for internal API requests (#2310)

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* Add response size and requests total to internal handler

* Move MustRegister calls to New* funcs

* Move MustRegister back to init

* Init at some place, minimize changes
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Till 2022-04-08 12:24:40 +02:00 • committed by GitHub
parent 25d99c4473
commit e8dd37d533
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9 changed files with 37 additions and 32 deletions
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28
internal/httputil/httpapi.go
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@ -169,8 +169,9 @@ func MakeHTMLAPI(metricsName string, f func(http.ResponseWriter, *http.Request)
return promhttp.InstrumentHandlerCounter(
promauto.NewCounterVec(
prometheus.CounterOpts{
Name: metricsName,
Help: "Total number of http requests for HTML resources",
Name: metricsName,
Help: "Total number of http requests for HTML resources",
Namespace: "dendrite",
},
[]string{"code"},
),
@ -201,7 +202,28 @@ func MakeInternalAPI(metricsName string, f func(*http.Request) util.JSONResponse
h.ServeHTTP(w, req)
}
return http.HandlerFunc(withSpan)
return promhttp.InstrumentHandlerCounter(
promauto.NewCounterVec(
prometheus.CounterOpts{
Name: metricsName + "_requests_total",
Help: "Total number of internal API calls",
Namespace: "dendrite",
},
[]string{"code"},
),
promhttp.InstrumentHandlerResponseSize(
promauto.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: "dendrite",
Name: metricsName + "_response_size_bytes",
Help: "A histogram of response sizes for requests.",
Buckets: []float64{200, 500, 900, 1500, 5000, 15000, 50000, 100000},
},
[]string{},
),
http.HandlerFunc(withSpan),
),
)
}
// MakeFedAPI makes an http.Handler that checks matrix federation authentication.