Golang New Examples

Example #1

File: main.go Project: xh3b4sd/anna

// DefaultConfig provides a default configuration to create a new annad object
// by best effort.
func DefaultConfig() Config {
	newServer, err := server.New(server.DefaultConfig())
	if err != nil {
		panic(err)
	}

	newConfig := Config{
		// Dependencies.
		Log:               log.New(log.DefaultConfig()),
		Network:           network.MustNew(),
		Server:            newServer,
		ServiceCollection: service.MustNewCollection(),
		// TODO remove storage collection
		StorageCollection: storage.MustNewCollection(),

		// Settings.
		Flags:   Flags{},
		Version: version,
	}

	return newConfig
}

Example #2

File: annad.go Project: xh3b4sd/anna

func (a *annad) InitAnnadCmd() *cobra.Command {
	a.Log.WithTags(spec.Tags{C: nil, L: "D", O: a, V: 13}, "call InitAnnadCmd")

	// Create new command.
	newCmd := &cobra.Command{
		Use:   "annad",
		Short: "Run the anna daemon. For more information see https://github.com/xh3b4sd/anna.",
		Long:  "Run the anna daemon. For more information see https://github.com/xh3b4sd/anna.",
		PersistentPreRun: func(cmd *cobra.Command, args []string) {
			var err error

			// log.
			err = a.Log.SetLevels(a.Flags.ControlLogLevels)
			panicOnError(err)
			err = a.Log.SetObjects(a.Flags.ControlLogObejcts)
			panicOnError(err)
			err = a.Log.SetVerbosity(a.Flags.ControlLogVerbosity)
			panicOnError(err)

			a.Log.Register(a.GetType())

			// service collection.
			a.ServiceCollection, err = newServiceCollection()
			panicOnError(err)

			// storage collection.
			a.StorageCollection, err = newStorageCollection(a.Log, a.Flags)
			panicOnError(err)

			// activator.
			activator, err := newActivator(a.Log, a.ServiceCollection, a.StorageCollection)
			panicOnError(err)

			// forwarder.
			forwarder, err := newForwarder(a.Log, a.ServiceCollection, a.StorageCollection)
			panicOnError(err)

			// tracker.
			tracker, err := newTracker(a.Log, a.ServiceCollection, a.StorageCollection)
			panicOnError(err)

			// network.
			networkConfig := network.DefaultConfig()
			networkConfig.Activator = activator
			networkConfig.ServiceCollection = a.ServiceCollection
			networkConfig.Forwarder = forwarder
			networkConfig.Log = a.Log
			networkConfig.StorageCollection = a.StorageCollection
			networkConfig.Tracker = tracker
			a.Network, err = network.New(networkConfig)
			panicOnError(err)

			// log control.
			logControl, err := newLogControl(a.Log)
			panicOnError(err)

			// text interface.
			textInterface, err := newTextInterface(a.Log, a.ServiceCollection)
			panicOnError(err)

			// server.
			serverConfig := server.DefaultConfig()
			serverConfig.GRPCAddr = a.Flags.GRPCAddr
			serverConfig.HTTPAddr = a.Flags.HTTPAddr
			serverConfig.Instrumentation, err = newPrometheusInstrumentation([]string{"Server"})
			panicOnError(err)
			serverConfig.Log = a.Log
			serverConfig.LogControl = logControl
			serverConfig.TextInterface = textInterface
			a.Server, err = server.New(serverConfig)
			panicOnError(err)
		},
		Run: a.ExecAnnadCmd,
	}

	// Add sub commands.
	newCmd.AddCommand(a.InitAnnadVersionCmd())

	// Define command line flags.
	newCmd.PersistentFlags().StringVar(&a.Flags.GRPCAddr, "grpc-addr", "127.0.0.1:9119", "host:port to bind Anna's gRPC server to")
	newCmd.PersistentFlags().StringVar(&a.Flags.HTTPAddr, "http-addr", "127.0.0.1:9120", "host:port to bind Anna's HTTP server to")

	newCmd.PersistentFlags().StringVar(&a.Flags.ControlLogLevels, "control-log-levels", "", "set log levels for log control (e.g. E)")
	newCmd.PersistentFlags().StringVar(&a.Flags.ControlLogObejcts, "control-log-objects", "", "set log objects for log control (e.g. network)")
	newCmd.PersistentFlags().IntVar(&a.Flags.ControlLogVerbosity, "control-log-verbosity", 10, "set log verbosity for log control")

	newCmd.PersistentFlags().StringVar(&a.Flags.Storage, "storage", "redis", "storage type to use for persistency (e.g. memory)")
	newCmd.PersistentFlags().StringVar(&a.Flags.RedisFeatureStorageAddr, "redis-feature-storage-addr", "127.0.0.1:6380", "host:port to connect to feature storage")
	newCmd.PersistentFlags().StringVar(&a.Flags.RedisGeneralStorageAddr, "redis-general-storage-addr", "127.0.0.1:6381", "host:port to connect to general storage")
	newCmd.PersistentFlags().StringVar(&a.Flags.RedisStoragePrefix, "redis-storage-prefix", "anna", "prefix used to prepend to storage keys")

	return newCmd
}