Awesome
negroni-prometheus
Prometheus middleware for negroni.
Warning
THIS PROJECT IS ARCHIVED AND IS NO LONGER MAINTAINED SINCE I DO NOT USE NEGRONI ANYMORE.
Why
Instead of logging request times, it is considered best practice to provide an endpoint for instrumentation tools (like prometheus).
Installation
$ go get github.com/zbindenren/negroni-prometheus
Usage
Use this middleware like the negroni.Logger
middleware (after negroni.Recovery
, before every other middleware).
Take a look at the example.
What do you get
An endpoint with the following information (stripped output):
...
# HELP negroni_request_duration_milliseconds How long it took to process the request, partitioned by status code, method and HTTP path.
# TYPE negroni_request_duration_milliseconds histogram
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/metrics",service="serviceName",le="300"} 1
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/metrics",service="serviceName",le="1200"} 1
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/metrics",service="serviceName",le="5000"} 1
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/metrics",service="serviceName",le="+Inf"} 1
negroni_request_duration_milliseconds_sum{code="OK",method="GET",path="/metrics",service="serviceName"} 2.003123
negroni_request_duration_milliseconds_count{code="OK",method="GET",path="/metrics",service="serviceName"} 1
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/ok",service="serviceName",le="300"} 0
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/ok",service="serviceName",le="1200"} 0
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/ok",service="serviceName",le="5000"} 2
negroni_request_duration_milliseconds_bucket{code="OK",method="GET",path="/ok",service="serviceName",le="+Inf"} 2
negroni_request_duration_milliseconds_sum{code="OK",method="GET",path="/ok",service="serviceName"} 4747.529026
negroni_request_duration_milliseconds_count{code="OK",method="GET",path="/ok",service="serviceName"} 2
# HELP negroni_requests_total How many HTTP requests processed, partitioned by status code, method and HTTP path.
# TYPE negroni_requests_total counter
negroni_requests_total{code="OK",method="GET",path="/metrics",service="serviceName"} 1
negroni_requests_total{code="OK",method="GET",path="/ok",service="serviceName"} 2
...