k8s.io/apiserver@v0.31.1/pkg/server/routes/metrics.go (about) 1 /* 2 Copyright 2014 The Kubernetes Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package routes 18 19 import ( 20 handlersmetrics "k8s.io/apiserver/pkg/endpoints/handlers/metrics" 21 apimetrics "k8s.io/apiserver/pkg/endpoints/metrics" 22 "k8s.io/apiserver/pkg/server/mux" 23 cachermetrics "k8s.io/apiserver/pkg/storage/cacher/metrics" 24 etcd3metrics "k8s.io/apiserver/pkg/storage/etcd3/metrics" 25 flowcontrolmetrics "k8s.io/apiserver/pkg/util/flowcontrol/metrics" 26 peerproxymetrics "k8s.io/apiserver/pkg/util/peerproxy/metrics" 27 "k8s.io/component-base/metrics/legacyregistry" 28 ) 29 30 // DefaultMetrics installs the default prometheus metrics handler 31 type DefaultMetrics struct{} 32 33 // Install adds the DefaultMetrics handler 34 func (m DefaultMetrics) Install(c *mux.PathRecorderMux) { 35 register() 36 c.Handle("/metrics", legacyregistry.Handler()) 37 } 38 39 // MetricsWithReset install the prometheus metrics handler extended with support for the DELETE method 40 // which resets the metrics. 41 type MetricsWithReset struct{} 42 43 // Install adds the MetricsWithReset handler 44 func (m MetricsWithReset) Install(c *mux.PathRecorderMux) { 45 register() 46 c.Handle("/metrics", legacyregistry.HandlerWithReset()) 47 } 48 49 // register apiserver and etcd metrics 50 func register() { 51 apimetrics.Register() 52 cachermetrics.Register() 53 etcd3metrics.Register() 54 flowcontrolmetrics.Register() 55 peerproxymetrics.Register() 56 handlersmetrics.Register() 57 }