79 lines
1.6 KiB
Go
79 lines
1.6 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"net"
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"os"
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"os/signal"
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"syscall"
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. "github.com/weaveworks/weave/common"
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"github.com/weaveworks/weave/plugin"
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"github.com/weaveworks/weave/plugin/skel"
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)
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var version = "(unreleased version)"
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func main() {
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var (
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justVersion bool
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address string
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nameserver string
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logLevel string
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)
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flag.BoolVar(&justVersion, "version", false, "print version and exit")
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flag.StringVar(&logLevel, "log-level", "info", "logging level (debug, info, warning, error)")
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flag.StringVar(&address, "socket", "/run/docker/plugins/weave.sock", "socket on which to listen")
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flag.StringVar(&nameserver, "nameserver", "", "nameserver to provide to containers")
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flag.Parse()
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if justVersion {
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fmt.Printf("weave plugin %s\n", version)
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os.Exit(0)
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}
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SetLogLevel(logLevel)
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Log.Println("Weave plugin", version, "Command line options:", os.Args)
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var d skel.Driver
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d, err := plugin.New(version, nameserver)
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if err != nil {
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Log.Fatalf("unable to create driver: %s", err)
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}
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var listener net.Listener
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// remove socket from last invocation
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if err := os.Remove(address); err != nil && !os.IsNotExist(err) {
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Log.Fatal(err)
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}
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listener, err = net.Listen("unix", address)
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if err != nil {
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Log.Fatal(err)
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}
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defer listener.Close()
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, os.Interrupt, os.Kill, syscall.SIGTERM)
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endChan := make(chan error, 1)
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go func() {
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endChan <- skel.Listen(listener, d)
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}()
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select {
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case sig := <-sigChan:
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Log.Debugf("Caught signal %s; shutting down", sig)
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case err := <-endChan:
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if err != nil {
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Log.Errorf("Error from listener: %s", err)
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listener.Close()
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os.Exit(1)
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}
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}
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}
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