mirror of
https://github.com/weaveworks/scope.git
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36b743fe1f
- Restructure main funcs for clean defer-stack-unwinds - Fix Docker container to handle signals properly - Introduce runsvinit for container init process - Integration test
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
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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"math/rand"
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"net/http"
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_ "net/http/pprof"
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"os"
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"os/signal"
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"strconv"
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"strings"
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"syscall"
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"time"
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"github.com/weaveworks/scope/xfer"
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)
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var (
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// Set at buildtime.
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version = "dev"
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// Set at runtime.
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uniqueID = "0"
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)
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func main() {
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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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logPrefix = flag.String("log.prefix", "<app>", "prefix for each log line")
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printVersion = flag.Bool("version", false, "print version number and exit")
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)
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flag.Parse()
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if *printVersion {
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fmt.Println(version)
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return
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}
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if !strings.HasSuffix(*logPrefix, " ") {
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*logPrefix += " "
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}
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log.SetPrefix(*logPrefix)
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defer log.Print("app exiting")
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rand.Seed(time.Now().UnixNano())
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uniqueID = strconv.FormatInt(rand.Int63(), 16)
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log.Printf("app starting, version %s, ID %s", version, uniqueID)
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c := xfer.NewCollector(*window)
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http.Handle("/", Router(c))
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go func() {
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log.Printf("listening on %s", *listen)
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log.Print(http.ListenAndServe(*listen, nil))
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}()
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log.Printf("%s", <-interrupt())
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}
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func interrupt() chan os.Signal {
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c := make(chan os.Signal)
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signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
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return c
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}
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