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72 lines
2.6 KiB
Go
72 lines
2.6 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package app
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import (
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"net/http"
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goruntime "runtime"
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genericapifilters "k8s.io/apiserver/pkg/endpoints/filters"
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apirequest "k8s.io/apiserver/pkg/endpoints/request"
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apiserver "k8s.io/apiserver/pkg/server"
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genericfilters "k8s.io/apiserver/pkg/server/filters"
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"k8s.io/apiserver/pkg/server/healthz"
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"k8s.io/apiserver/pkg/server/mux"
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"k8s.io/apiserver/pkg/server/routes"
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"k8s.io/client-go/kubernetes/scheme"
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componentbaseconfig "k8s.io/component-base/config"
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"k8s.io/component-base/configz"
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"k8s.io/component-base/metrics/legacyregistry"
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_ "k8s.io/component-base/metrics/prometheus/workqueue" // for workqueue metric registration
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)
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// BuildHandlerChain builds a handler chain with a base handler and CompletedConfig.
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func BuildHandlerChain(apiHandler http.Handler, authorizationInfo *apiserver.AuthorizationInfo, authenticationInfo *apiserver.AuthenticationInfo) http.Handler {
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requestInfoResolver := &apirequest.RequestInfoFactory{}
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failedHandler := genericapifilters.Unauthorized(scheme.Codecs)
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handler := apiHandler
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if authorizationInfo != nil {
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handler = genericapifilters.WithAuthorization(apiHandler, authorizationInfo.Authorizer, scheme.Codecs)
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}
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if authenticationInfo != nil {
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handler = genericapifilters.WithAuthentication(handler, authenticationInfo.Authenticator, failedHandler, nil)
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}
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handler = genericapifilters.WithRequestInfo(handler, requestInfoResolver)
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handler = genericapifilters.WithCacheControl(handler)
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handler = genericfilters.WithPanicRecovery(handler)
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return handler
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}
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// NewBaseHandler takes in CompletedConfig and returns a handler.
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func NewBaseHandler(c *componentbaseconfig.DebuggingConfiguration, checks ...healthz.HealthChecker) *mux.PathRecorderMux {
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mux := mux.NewPathRecorderMux("controller-manager")
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healthz.InstallHandler(mux, checks...)
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if c.EnableProfiling {
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routes.Profiling{}.Install(mux)
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if c.EnableContentionProfiling {
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goruntime.SetBlockProfileRate(1)
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}
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}
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configz.InstallHandler(mux)
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//lint:ignore SA1019 See the Metrics Stability Migration KEP
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mux.Handle("/metrics", legacyregistry.Handler())
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return mux
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}
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