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/
server.go
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/
server.go
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// Copyright 2016 Google Inc. All Rights Reserved.
//
// 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 app does all of the work necessary to create a Heapster
// APIServer by binding together the Master Metrics API.
// It can be configured and called directly or via the hyperkube framework.
package app
import (
"fmt"
"k8s.io/apimachinery/pkg/util/wait"
genericapiserver "k8s.io/apiserver/pkg/server"
v1listers "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/pkg/api"
"k8s.io/heapster/metrics/options"
metricsink "k8s.io/heapster/metrics/sinks/metric"
)
type HeapsterAPIServer struct {
*genericapiserver.GenericAPIServer
options *options.HeapsterRunOptions
metricSink *metricsink.MetricSink
nodeLister v1listers.NodeLister
}
// Run runs the specified APIServer. This should never exit.
func (h *HeapsterAPIServer) RunServer() error {
h.PrepareRun().Run(wait.NeverStop)
return nil
}
func NewHeapsterApiServer(s *options.HeapsterRunOptions, metricSink *metricsink.MetricSink,
nodeLister v1listers.NodeLister, podLister v1listers.PodLister) (*HeapsterAPIServer, error) {
server, err := newAPIServer(s)
if err != nil {
return &HeapsterAPIServer{}, err
}
installMetricsAPIs(s, server, metricSink, nodeLister, podLister)
return &HeapsterAPIServer{
GenericAPIServer: server,
options: s,
metricSink: metricSink,
nodeLister: nodeLister,
}, nil
}
func newAPIServer(s *options.HeapsterRunOptions) (*genericapiserver.GenericAPIServer, error) {
if err := s.SecureServing.MaybeDefaultWithSelfSignedCerts("heapster.kube-system"); err != nil {
return nil, fmt.Errorf("error creating self-signed certificates: %v", err)
}
serverConfig := genericapiserver.NewConfig().
WithSerializer(api.Codecs)
if err := s.SecureServing.ApplyTo(serverConfig); err != nil {
return nil, err
}
if !s.DisableAuthForTesting {
if err := s.Authentication.ApplyTo(serverConfig); err != nil {
return nil, err
}
if err := s.Authorization.ApplyTo(serverConfig); err != nil {
return nil, err
}
}
serverConfig.SwaggerConfig = genericapiserver.DefaultSwaggerConfig()
return serverConfig.Complete().New()
}