7f78661d0b
- rename MuxHelper -> PathRecorderMux - move non-rest handlers into routes packages within genericapiserver and `pkg/routes` (those from master) - move ui and logs handlers out of genericapiserver (they are not generic) - make version handler configurable (`config.EnableVersion`)
54 lines
1.6 KiB
Go
54 lines
1.6 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package routes
|
|
|
|
import (
|
|
"io"
|
|
"net/http"
|
|
|
|
"k8s.io/kubernetes/pkg/apiserver"
|
|
apiservermetrics "k8s.io/kubernetes/pkg/apiserver/metrics"
|
|
etcdmetrics "k8s.io/kubernetes/pkg/storage/etcd/metrics"
|
|
|
|
"github.com/emicklei/go-restful"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
// DefaultMetrics installs the default prometheus metrics handler
|
|
type DefaultMetrics struct{}
|
|
|
|
func (m DefaultMetrics) Install(mux *apiserver.PathRecorderMux, c *restful.Container) {
|
|
mux.HandleFunc("/metrics", prometheus.Handler().ServeHTTP)
|
|
}
|
|
|
|
// MetricsWithReset install the prometheus metrics handler extended with support for the DELETE method
|
|
// which resets the metrics.
|
|
type MetricsWithReset struct{}
|
|
|
|
func (m MetricsWithReset) Install(mux *apiserver.PathRecorderMux, c *restful.Container) {
|
|
defaultMetricsHandler := prometheus.Handler().ServeHTTP
|
|
mux.HandleFunc("/metrics", func(w http.ResponseWriter, req *http.Request) {
|
|
if req.Method == "DELETE" {
|
|
apiservermetrics.Reset()
|
|
etcdmetrics.Reset()
|
|
io.WriteString(w, "metrics reset\n")
|
|
return
|
|
}
|
|
defaultMetricsHandler(w, req)
|
|
})
|
|
}
|