Golang New Examples

Example #1

File: simulator.go Project: vito/diego-sim

func main() {
	flag.Parse()

	//make the out dir
	logger.Component = "SIMULATOR"
	if outDir == "" {
		logger.Fatal("out.dir.unspecified")
	}
	err := os.MkdirAll(outDir, 0777)
	if err != nil {
		logger.Fatal("out.dir.creation.failed", err)
	}

	//set up logging
	outputFile, err := os.Create(filepath.Join(outDir, "simulator.log"))
	if err != nil {
		logger.Fatal("failed.to.create.simulator.log", err)
	}
	logger.Writer = io.MultiWriter(os.Stdout, outputFile)
	cleanup.Register(func() {
		outputFile.Sync()
	})

	//compile the executor
	logger.Info("compiling.executor")
	output, err := exec.Command("go", "install", "github.com/cloudfoundry-incubator/simulator/game_executor").CombinedOutput()
	if err != nil {
		logger.Fatal("failed.to.compile.executor", string(output))
	}

	//write info to the output dir
	writeInfo()

	//start etcd
	logger.Info("starting.etcd", etcdNodes)
	etcd = etcdstorerunner.NewETCDClusterRunner(4001, etcdNodes)
	etcd.Start()

	//set up the bbs
	pool := workerpool.NewWorkerPool(50)
	etcdAdapter = etcdstoreadapter.NewETCDStoreAdapter(etcd.NodeURLS(), pool)
	etcdAdapter.Connect()
	bbs = Bbs.New(etcdAdapter, timeprovider.NewTimeProvider())

	//monitor etcd
	monitorETCD()

	//start executors
	startExecutors()

	cleanup.Register(func() {
		logger.Info("stopping.etcd", etcdNodes)
		etcd.Stop()
	})

	//run the simulator
	runSimulation()

	cleanup.Exit(0)
}

Example #2

File: main.go Project: pivotal-cf-experimental/executor-tester

func main() {
	flag.Parse()

	datadogApiKey := os.Getenv("DATADOG_API_KEY")
	datadogAppKey := os.Getenv("DATADOG_APP_KEY")

	var datadogClient *datadog.Client

	if datadogApiKey != "" {
		datadogClient = datadog.NewClient(datadogApiKey, datadogAppKey)
	}

	store := etcdstoreadapter.NewETCDStoreAdapter(
		strings.Split(*etcdMachines, ","),
		workerpool.NewWorkerPool(50),
	)

	err := store.Connect()
	if err != nil {
		log.Fatalln("failed to connect to store:", err)
	}

	if *emitStates {
		// logging mode
		etcd_logger.EmitRunOnceStates(datadogClient, store, strings.Split(*etcdMachines, ","))
	} else {
		// stampede mode

		runOnce := &models.RunOnce{
			Actions: []models.ExecutorAction{
				{
					models.RunAction{
						Script:  *script,
						Timeout: *timeout,
					},
				},
			},
			Stack:    *stack,
			MemoryMB: *memoryMB,
			DiskMB:   *diskMB,
		}

		if *logGuid != "" {
			runOnce.Log = models.LogConfig{
				Guid:       *logGuid,
				SourceName: *logSourceName,
			}
		}
		stampede.RunonceStampede(bbs.New(store, timeprovider.NewTimeProvider()), datadogClient, runOnce, *runOnceCount)
	}

}

Example #3

File: game_executor.go Project: vito/diego-sim

func main() {
	flag.Parse()
	cleanup.Register(func() {
		logger.Info("executor.shuttingdown")
		close(stop)
		tasks.Wait()
		logger.Info("executor.shutdown")
	})
	logger.Component = fmt.Sprintf("EXECUTOR %s", *executorID)

	lock = &sync.Mutex{}
	currentMemory = *maxMemory

	etcdAdapter := etcdstoreadapter.NewETCDStoreAdapter(
		strings.Split(*etcdCluster, ","),
		workerpool.NewWorkerPool(10),
	)
	err := etcdAdapter.Connect()
	if err != nil {
		logger.Fatal("etcd.connect.fatal", err)
	}

	tasks = &sync.WaitGroup{}
	stop = make(chan bool)

	bbs := Bbs.New(etcdAdapter, timeprovider.NewTimeProvider())

	ready := make(chan bool, 1)

	err = maintainPresence(bbs, ready)
	if err != nil {
		logger.Fatal("executor.initializing-presence.failed", err)
	}

	go handleRunOnces(bbs)
	go convergeRunOnces(bbs)

	<-ready

	logger.Info("executor.up")

	select {}
}