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package main
import (
"flag"
"os"
"syscall"
"github.com/fsnotify/fsnotify"
log "github.com/sirupsen/logrus"
pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1"
)
func main() {
// Parse command-line arguments
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
flagLogLevel := flag.String("log-level", "info", "Define the logging level: error, info, debug.")
flag.Parse()
switch *flagLogLevel {
case "debug":
log.SetLevel(log.DebugLevel)
case "info":
log.SetLevel(log.InfoLevel)
}
log.Println("Starting FS watcher.")
watcher, err := newFSWatcher(pluginapi.DevicePluginPath)
if err != nil {
log.Printf("Failed to created FS watcher: %s.", err)
os.Exit(1)
}
defer watcher.Close()
log.Println("Starting OS watcher.")
sigs := newOSWatcher(syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
restart := true
var devicePlugin *FPGADevicePlugin
L:
for {
if restart {
devicePlugin = NewFPGADevicePlugin()
restart = false
}
select {
case update := <-devicePlugin.updateChan:
devicePlugin.checkDeviceUpdate(update)
case event := <-watcher.Events:
if event.Name == pluginapi.KubeletSocket && event.Op&fsnotify.Create == fsnotify.Create {
log.Printf("inotify: %s created, restarting.", pluginapi.KubeletSocket)
restart = true
}
case err := <-watcher.Errors:
log.Printf("inotify: %s", err)
case s := <-sigs:
switch s {
case syscall.SIGHUP:
log.Println("Received SIGHUP, restarting.")
restart = true
default:
log.Printf("Received signal \"%v\", shutting down.", s)
break L
}
}
}
}
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