104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package main
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import (
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"flag"
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"fmt"
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"log"
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"net/http"
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"time"
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"github.com/google/cadvisor/api"
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"github.com/google/cadvisor/container"
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"github.com/google/cadvisor/container/docker"
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"github.com/google/cadvisor/container/lmctfy"
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"github.com/google/cadvisor/info"
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"github.com/google/cadvisor/manager"
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"github.com/google/cadvisor/pages"
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"github.com/google/cadvisor/pages/static"
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)
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var argPort = flag.Int("port", 8080, "port to listen")
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var argSampleSize = flag.Int("samples", 1024, "number of samples we want to keep")
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var argResetPeriod = flag.Duration("reset_period", 2*time.Hour, "period to reset the samples")
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func main() {
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flag.Parse()
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// XXX(dengnan): Should we allow users to specify which sampler they want to use?
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container.SetStatsParameter(&container.StatsParameter{
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Sampler: "uniform",
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NumSamples: *argSampleSize,
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ResetPeriod: *argResetPeriod,
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})
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// TODO(monnand): Add stats writer for manager
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containerManager, err := manager.New(nil)
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if err != nil {
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log.Fatalf("Failed to create a Container Manager: %s", err)
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}
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if err := lmctfy.Register("/"); err != nil {
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log.Printf("lmctfy registration failed: %v.", err)
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log.Print("Running in docker only mode.")
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if err := docker.Register(containerManager, "/"); err != nil {
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log.Printf("Docker registration failed: %v.", err)
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log.Fatalf("Unable to continue without docker or lmctfy.")
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}
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}
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if err := docker.Register(containerManager, "/docker"); err != nil {
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// Ignore this error because we should work with lmctfy only
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log.Printf("Docker registration failed: %v.", err)
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log.Print("Running in lmctfy only mode.")
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}
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// Handler for static content.
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http.HandleFunc(static.StaticResource, func(w http.ResponseWriter, r *http.Request) {
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err := static.HandleRequest(w, r.URL)
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if err != nil {
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fmt.Fprintf(w, "%s", err)
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}
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})
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// Handler for the API.
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http.HandleFunc(api.ApiResource, func(w http.ResponseWriter, r *http.Request) {
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err := api.HandleRequest(containerManager, w, r.URL)
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if err != nil {
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fmt.Fprintf(w, "%s", err)
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}
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})
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// Redirect / to containers page.
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http.Handle("/", http.RedirectHandler(pages.ContainersPage, http.StatusTemporaryRedirect))
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// Register the handler for the containers page.
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http.HandleFunc(pages.ContainersPage, func(w http.ResponseWriter, r *http.Request) {
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err := pages.ServerContainersPage(containerManager, w, r.URL)
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if err != nil {
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fmt.Fprintf(w, "%s", err)
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}
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})
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go containerManager.Start()
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log.Printf("Starting cAdvisor version: %q", info.VERSION)
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log.Print("About to serve on port ", *argPort)
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addr := fmt.Sprintf(":%v", *argPort)
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log.Fatal(http.ListenAndServe(addr, nil))
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}
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