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handlers.go
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handlers.go
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// Copyright 2014 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 main
import (
"net/http"
"net/http/pprof"
"strings"
restful "github.com/emicklei/go-restful"
"k8s.io/heapster/metrics/api/v1"
metricsApi "k8s.io/heapster/metrics/apis/metrics"
"k8s.io/heapster/metrics/core"
metricsink "k8s.io/heapster/metrics/sinks/metric"
"k8s.io/heapster/metrics/util/metrics"
v1listers "k8s.io/client-go/listers/core/v1"
)
const pprofBasePath = "/debug/pprof/"
func setupHandlers(metricSink *metricsink.MetricSink, podLister v1listers.PodLister, nodeLister v1listers.NodeLister, historicalSource core.HistoricalSource, disableMetricExport bool) http.Handler {
runningInKubernetes := true
// Make API handler.
wsContainer := restful.NewContainer()
wsContainer.EnableContentEncoding(true)
wsContainer.Router(restful.CurlyRouter{})
a := v1.NewApi(runningInKubernetes, metricSink, historicalSource, disableMetricExport)
a.Register(wsContainer)
// Metrics API
m := metricsApi.NewApi(metricSink, podLister, nodeLister)
m.Register(wsContainer)
handlePprofEndpoint := func(req *restful.Request, resp *restful.Response) {
name := strings.TrimPrefix(req.Request.URL.Path, pprofBasePath)
switch name {
case "profile":
pprof.Profile(resp, req.Request)
case "symbol":
pprof.Symbol(resp, req.Request)
case "cmdline":
pprof.Cmdline(resp, req.Request)
default:
pprof.Index(resp, req.Request)
}
}
// Setup pporf handlers.
ws := new(restful.WebService).Path(pprofBasePath)
ws.Route(ws.GET("/{subpath:*}").To(metrics.InstrumentRouteFunc("pprof", handlePprofEndpoint))).Doc("pprof endpoint")
wsContainer.Add(ws)
return wsContainer
}