mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-02 17:50:39 +00:00
103 lines
3.1 KiB
Go
103 lines
3.1 KiB
Go
package main
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import (
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"flag"
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"math/rand"
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"net/http"
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_ "net/http/pprof"
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"strconv"
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"time"
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log "github.com/Sirupsen/logrus"
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"github.com/gorilla/mux"
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"github.com/weaveworks/go-checkpoint"
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"github.com/weaveworks/weave/common"
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"github.com/weaveworks/scope/app"
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"github.com/weaveworks/scope/common/weave"
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"github.com/weaveworks/scope/common/xfer"
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"github.com/weaveworks/scope/probe/docker"
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)
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// Router creates the mux for all the various app components.
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func router(c app.Collector) http.Handler {
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router := mux.NewRouter()
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app.RegisterReportPostHandler(c, router)
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app.RegisterControlRoutes(router, app.NewLocalControlRouter())
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app.RegisterPipeRoutes(router, app.NewLocalPipeRouter())
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return app.TopologyHandler(c, router, http.FileServer(FS(false)))
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}
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// Main runs the app
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func appMain() {
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var (
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window = flag.Duration("window", 15*time.Second, "window")
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listen = flag.String("http.address", ":"+strconv.Itoa(xfer.AppPort), "webserver listen address")
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logLevel = flag.String("log.level", "info", "logging threshold level: debug|info|warn|error|fatal|panic")
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logPrefix = flag.String("log.prefix", "<app>", "prefix for each log line")
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weaveAddr = flag.String("weave.addr", app.DefaultWeaveURL, "Address on which to contact WeaveDNS")
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weaveHostname = flag.String("weave.hostname", app.DefaultHostname, "Hostname to advertise in WeaveDNS")
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containerName = flag.String("container.name", app.DefaultContainerName, "Name of this container (to lookup container ID)")
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dockerEndpoint = flag.String("docker", app.DefaultDockerEndpoint, "Location of docker endpoint (to lookup container ID)")
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)
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flag.Parse()
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setLogLevel(*logLevel)
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setLogFormatter(*logPrefix)
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defer log.Info("app exiting")
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// Start background version checking
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checkpoint.CheckInterval(&checkpoint.CheckParams{
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Product: "scope-app",
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Version: app.Version,
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}, versionCheckPeriod, func(r *checkpoint.CheckResponse, err error) {
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if r.Outdated {
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log.Infof("Scope version %s is available; please update at %s",
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r.CurrentVersion, r.CurrentDownloadURL)
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}
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})
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rand.Seed(time.Now().UnixNano())
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app.UniqueID = strconv.FormatInt(rand.Int63(), 16)
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app.Version = version
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log.Infof("app starting, version %s, ID %s", app.Version, app.UniqueID)
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// If user supplied a weave router address, periodically try and register
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// out IP address in WeaveDNS.
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if *weaveAddr != "" {
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weave, err := newWeavePublisher(
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*dockerEndpoint, *weaveAddr,
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*weaveHostname, *containerName)
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if err != nil {
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log.Println("Failed to start weave integration:", err)
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} else {
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defer weave.Stop()
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}
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}
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handler := router(app.NewCollector(*window))
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go func() {
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log.Infof("listening on %s", *listen)
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log.Info(http.ListenAndServe(*listen, handler))
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}()
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common.SignalHandlerLoop()
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}
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func newWeavePublisher(dockerEndpoint, weaveAddr, weaveHostname, containerName string) (*app.WeavePublisher, error) {
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dockerClient, err := docker.NewDockerClientStub(dockerEndpoint)
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if err != nil {
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return nil, err
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}
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weaveClient := weave.NewClient(weaveAddr)
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return app.NewWeavePublisher(
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weaveClient,
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dockerClient,
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app.Interfaces,
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weaveHostname,
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containerName,
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), nil
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}
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