func connector(context *cli.Context) int {
	config, configFilename, err := lib.GetConfig(context)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to read config file: %s", err)
		return 1
	}

	logFileMaxBytes := config.LogFileMaxMegabytes * 1024 * 1024
	var logWriter io.Writer
	logWriter, err = log.NewLogRoller(config.LogFileName, logFileMaxBytes, config.LogMaxFiles)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to start log roller: %s", err)
		return 1
	}

	if context.Bool("log-to-console") {
		logWriter = io.MultiWriter(logWriter, os.Stderr)
	}
	logLevel, ok := log.LevelFromString(config.LogLevel)
	if !ok {
		fmt.Fprintf(os.Stderr, "Log level %s is not recognized", config.LogLevel)
		return 1
	}
	log.SetLevel(logLevel)
	log.SetWriter(logWriter)

	if configFilename == "" {
		log.Info("No config file was found, so using defaults")
	}

	log.Error(lib.FullName)
	fmt.Println(lib.FullName)

	if !config.CloudPrintingEnable && !config.LocalPrintingEnable {
		log.Error("Cannot run connector with both local_printing_enable and cloud_printing_enable set to false")
		return 1
	}

	if _, err := os.Stat(config.MonitorSocketFilename); !os.IsNotExist(err) {
		if err != nil {
			log.Errorf("Failed to stat monitor socket: %s", err)
		} else {
			log.Errorf(
				"A connector is already running, or the monitoring socket %s wasn't cleaned up properly",
				config.MonitorSocketFilename)
		}
		return 1
	}

	jobs := make(chan *lib.Job, 10)
	xmppNotifications := make(chan xmpp.PrinterNotification, 5)

	var g *gcp.GoogleCloudPrint
	var x *xmpp.XMPP
	if config.CloudPrintingEnable {
		xmppPingTimeout, err := time.ParseDuration(config.XMPPPingTimeout)
		if err != nil {
			log.Fatalf("Failed to parse xmpp ping timeout: %s", err)
			return 1
		}
		xmppPingInterval, err := time.ParseDuration(config.XMPPPingInterval)
		if err != nil {
			log.Fatalf("Failed to parse xmpp ping interval default: %s", err)
			return 1
		}

		g, err = gcp.NewGoogleCloudPrint(config.GCPBaseURL, config.RobotRefreshToken,
			config.UserRefreshToken, config.ProxyName, config.GCPOAuthClientID,
			config.GCPOAuthClientSecret, config.GCPOAuthAuthURL, config.GCPOAuthTokenURL,
			config.GCPMaxConcurrentDownloads, jobs)
		if err != nil {
			log.Error(err)
			return 1
		}

		x, err = xmpp.NewXMPP(config.XMPPJID, config.ProxyName, config.XMPPServer, config.XMPPPort,
			xmppPingTimeout, xmppPingInterval, g.GetRobotAccessToken, xmppNotifications)
		if err != nil {
			log.Error(err)
			return 1
		}
		defer x.Quit()
	}

	cupsConnectTimeout, err := time.ParseDuration(config.CUPSConnectTimeout)
	if err != nil {
		log.Fatalf("Failed to parse CUPS connect timeout: %s", err)
		return 1
	}
	c, err := cups.NewCUPS(config.CopyPrinterInfoToDisplayName, config.PrefixJobIDToJobTitle,
		config.DisplayNamePrefix, config.CUPSPrinterAttributes, config.CUPSMaxConnections,
		cupsConnectTimeout)
	if err != nil {
		log.Fatal(err)
		return 1
	}
	defer c.Quit()

	var s *snmp.SNMPManager
	if config.SNMPEnable {
		log.Info("SNMP enabled")
		s, err = snmp.NewSNMPManager(config.SNMPCommunity, config.SNMPMaxConnections)
		if err != nil {
			log.Error(err)
			return 1
		}
		defer s.Quit()
	}

	var priv *privet.Privet
	if config.LocalPrintingEnable {
		if g == nil {
			priv, err = privet.NewPrivet(jobs, config.GCPBaseURL, nil)
		} else {
			priv, err = privet.NewPrivet(jobs, config.GCPBaseURL, g.ProximityToken)
		}
		if err != nil {
			log.Error(err)
			return 1
		}
		defer priv.Quit()
	}

	cupsPrinterPollInterval, err := time.ParseDuration(config.CUPSPrinterPollInterval)
	if err != nil {
		log.Fatalf("Failed to parse CUPS printer poll interval: %s", err)
		return 1
	}
	pm, err := manager.NewPrinterManager(c, g, priv, s, cupsPrinterPollInterval,
		config.CUPSJobQueueSize, config.CUPSJobFullUsername, config.CUPSIgnoreRawPrinters,
		config.ShareScope, jobs, xmppNotifications)
	if err != nil {
		log.Error(err)
		return 1
	}
	defer pm.Quit()

	m, err := monitor.NewMonitor(c, g, priv, pm, config.MonitorSocketFilename)
	if err != nil {
		log.Error(err)
		return 1
	}
	defer m.Quit()

	if config.CloudPrintingEnable {
		if config.LocalPrintingEnable {
			log.Errorf("Ready to rock as proxy '%s' and in local mode", config.ProxyName)
			fmt.Printf("Ready to rock as proxy '%s' and in local mode\n", config.ProxyName)
		} else {
			log.Errorf("Ready to rock as proxy '%s'", config.ProxyName)
			fmt.Printf("Ready to rock as proxy '%s'\n", config.ProxyName)
		}
	} else {
		log.Error("Ready to rock in local-only mode")
		fmt.Println("Ready to rock in local-only mode")
	}

	waitIndefinitely()

	log.Error("Shutting down")
	fmt.Println("")
	fmt.Println("Shutting down")

	return 0
}
func NewPrinterManager(cups *cups.CUPS, gcp *gcp.GoogleCloudPrint, privet *privet.Privet, snmp *snmp.SNMPManager, printerPollInterval string, cupsQueueSize uint, jobFullUsername, ignoreRawPrinters bool, shareScope string, jobs <-chan *lib.Job, xmppNotifications <-chan xmpp.PrinterNotification) (*PrinterManager, error) {
	var printers *lib.ConcurrentPrinterMap
	var queuedJobsCount map[string]uint

	var err error
	if gcp != nil {
		// Get all GCP printers.
		var gcpPrinters []lib.Printer
		gcpPrinters, queuedJobsCount, err = gcp.ListPrinters()
		if err != nil {
			return nil, err
		}
		// Organize the GCP printers into a map.
		for i := range gcpPrinters {
			gcpPrinters[i].CUPSJobSemaphore = lib.NewSemaphore(cupsQueueSize)
		}
		printers = lib.NewConcurrentPrinterMap(gcpPrinters)
	} else {
		printers = lib.NewConcurrentPrinterMap(nil)
	}

	// Construct.
	pm := PrinterManager{
		cups:   cups,
		gcp:    gcp,
		privet: privet,
		snmp:   snmp,

		printers: printers,

		jobStatsMutex: sync.Mutex{},
		jobsDone:      0,
		jobsError:     0,

		jobsInFlightMutex: sync.Mutex{},
		jobsInFlight:      make(map[string]struct{}),

		cupsQueueSize:     cupsQueueSize,
		jobFullUsername:   jobFullUsername,
		ignoreRawPrinters: ignoreRawPrinters,
		shareScope:        shareScope,

		quit: make(chan struct{}),
	}

	// Sync once before returning, to make sure things are working.
	// Ignore privet updates this first time because Privet always starts
	// with zero printers.
	if err = pm.syncPrinters(true); err != nil {
		return nil, err
	}

	// Initialize Privet printers.
	if privet != nil {
		for _, printer := range pm.printers.GetAll() {
			err := privet.AddPrinter(printer, pm.printers.GetByCUPSName)
			if err != nil {
				glog.Warningf("Failed to register %s locally: %s", printer.Name, err)
			} else {
				glog.Infof("Registered %s locally", printer.Name)
			}
		}
	}

	ppi, err := time.ParseDuration(printerPollInterval)
	if err != nil {
		return nil, err
	}
	pm.syncPrintersPeriodically(ppi)
	pm.listenNotifications(jobs, xmppNotifications)

	if gcp != nil {
		for gcpPrinterID := range queuedJobsCount {
			p, _ := printers.GetByGCPID(gcpPrinterID)
			go gcp.HandleJobs(&p, func() { pm.incrementJobsProcessed(false) })
		}
	}

	return &pm, nil
}
Example #3
0
func main() {
	flag.Parse()
	defer glog.Flush()
	glog.Error(lib.FullName)
	fmt.Println(lib.FullName)

	config, err := lib.ConfigFromFile()
	if err != nil {
		glog.Fatal(err)
	}

	if _, err := os.Stat(config.MonitorSocketFilename); !os.IsNotExist(err) {
		if err != nil {
			glog.Fatal(err)
		}
		glog.Fatalf(
			"A connector is already running, or the monitoring socket %s wasn't cleaned up properly",
			config.MonitorSocketFilename)
	}

	cupsConnectTimeout, err := time.ParseDuration(config.CUPSConnectTimeout)
	if err != nil {
		glog.Fatalf("Failed to parse cups connect timeout: %s", err)
	}

	gcpXMPPPingTimeout, err := time.ParseDuration(config.XMPPPingTimeout)
	if err != nil {
		glog.Fatalf("Failed to parse xmpp ping timeout: %s", err)
	}
	gcpXMPPPingIntervalDefault, err := time.ParseDuration(config.XMPPPingIntervalDefault)
	if err != nil {
		glog.Fatalf("Failed to parse xmpp ping interval default: %s", err)
	}

	gcp, err := gcp.NewGoogleCloudPrint(config.GCPBaseURL, config.RobotRefreshToken, config.UserRefreshToken,
		config.ProxyName, config.GCPOAuthClientID, config.GCPOAuthClientSecret,
		config.GCPOAuthAuthURL, config.GCPOAuthTokenURL, gcpXMPPPingIntervalDefault)
	if err != nil {
		glog.Fatal(err)
	}

	xmpp, err := xmpp.NewXMPP(config.XMPPJID, config.ProxyName, config.XMPPServer, config.XMPPPort, gcpXMPPPingTimeout, gcpXMPPPingIntervalDefault, gcp.GetRobotAccessToken)
	if err != nil {
		glog.Fatal(err)
	}
	defer xmpp.Quit()

	createTempFile := cups.CreateTempFile

	cups, err := cups.NewCUPS(config.CopyPrinterInfoToDisplayName, config.CUPSPrinterAttributes,
		config.CUPSMaxConnections, cupsConnectTimeout, gcp.Translate)
	if err != nil {
		glog.Fatal(err)
	}
	defer cups.Quit()

	var snmpManager *snmp.SNMPManager
	if config.SNMPEnable {
		glog.Info("SNMP enabled")
		snmpManager, err = snmp.NewSNMPManager(config.SNMPCommunity, config.SNMPMaxConnections)
		if err != nil {
			glog.Fatal(err)
		}
		defer snmpManager.Quit()
	}

	var priv *privet.Privet
	if config.LocalPrintingEnable {
		priv, err = privet.NewPrivet(config.GCPBaseURL, gcp.ProximityToken, createTempFile)
		if err != nil {
			glog.Fatal(err)
		}
		defer priv.Quit()
	}

	pm, err := manager.NewPrinterManager(cups, gcp, xmpp, priv, snmpManager, config.CUPSPrinterPollInterval,
		config.GCPMaxConcurrentDownloads, config.CUPSJobQueueSize, config.CUPSJobFullUsername,
		config.CUPSIgnoreRawPrinters, config.ShareScope)
	if err != nil {
		glog.Fatal(err)
	}
	defer pm.Quit()

	m, err := monitor.NewMonitor(cups, gcp, pm, config.MonitorSocketFilename)
	if err != nil {
		glog.Fatal(err)
	}
	defer m.Quit()

	glog.Errorf("Ready to rock as proxy '%s'\n", config.ProxyName)
	fmt.Printf("Ready to rock as proxy '%s'\n", config.ProxyName)

	waitIndefinitely()

	glog.Error("Shutting down")
	fmt.Println("")
	fmt.Println("Shutting down")
}
Example #4
0
func main() {
	flag.Parse()
	defer glog.Flush()
	glog.Error(lib.FullName)
	fmt.Println(lib.FullName)

	var config *lib.Config
	if lib.ConfigFileExists() {
		var err error
		config, err = lib.ConfigFromFile()
		if err != nil {
			glog.Fatal(err)
		}
	} else {
		config = &lib.DefaultConfig
		glog.Info("No config file was found, so using defaults")
	}

	if !config.CloudPrintingEnable && !config.LocalPrintingEnable {
		glog.Fatal("Cannot run connector with both local_printing_enable and cloud_printing_enable set to false")
	}

	if _, err := os.Stat(config.MonitorSocketFilename); !os.IsNotExist(err) {
		if err != nil {
			glog.Fatal(err)
		}
		glog.Fatalf(
			"A connector is already running, or the monitoring socket %s wasn't cleaned up properly",
			config.MonitorSocketFilename)
	}

	cupsConnectTimeout, err := time.ParseDuration(config.CUPSConnectTimeout)
	if err != nil {
		glog.Fatalf("Failed to parse cups connect timeout: %s", err)
	}

	gcpXMPPPingTimeout, err := time.ParseDuration(config.XMPPPingTimeout)
	if err != nil {
		glog.Fatalf("Failed to parse xmpp ping timeout: %s", err)
	}
	gcpXMPPPingIntervalDefault, err := time.ParseDuration(config.XMPPPingIntervalDefault)
	if err != nil {
		glog.Fatalf("Failed to parse xmpp ping interval default: %s", err)
	}

	jobs := make(chan *lib.Job, 10)
	xmppNotifications := make(chan xmpp.PrinterNotification, 5)

	var g *gcp.GoogleCloudPrint
	var x *xmpp.XMPP
	if config.CloudPrintingEnable {
		g, err = gcp.NewGoogleCloudPrint(config.GCPBaseURL, config.RobotRefreshToken,
			config.UserRefreshToken, config.ProxyName, config.GCPOAuthClientID,
			config.GCPOAuthClientSecret, config.GCPOAuthAuthURL, config.GCPOAuthTokenURL,
			gcpXMPPPingIntervalDefault, config.GCPMaxConcurrentDownloads, jobs)
		if err != nil {
			glog.Fatal(err)
		}

		x, err = xmpp.NewXMPP(config.XMPPJID, config.ProxyName, config.XMPPServer, config.XMPPPort,
			gcpXMPPPingTimeout, gcpXMPPPingIntervalDefault, g.GetRobotAccessToken, xmppNotifications)
		if err != nil {
			glog.Fatal(err)
		}
		defer x.Quit()
	}

	c, err := cups.NewCUPS(config.CopyPrinterInfoToDisplayName, config.CUPSPrinterAttributes,
		config.CUPSMaxConnections, cupsConnectTimeout)
	if err != nil {
		glog.Fatal(err)
	}
	defer c.Quit()

	var s *snmp.SNMPManager
	if config.SNMPEnable {
		glog.Info("SNMP enabled")
		s, err = snmp.NewSNMPManager(config.SNMPCommunity, config.SNMPMaxConnections)
		if err != nil {
			glog.Fatal(err)
		}
		defer s.Quit()
	}

	var priv *privet.Privet
	if config.LocalPrintingEnable {
		if g == nil {
			priv, err = privet.NewPrivet(jobs, config.GCPBaseURL, nil)
		} else {
			priv, err = privet.NewPrivet(jobs, config.GCPBaseURL, g.ProximityToken)
		}
		if err != nil {
			glog.Fatal(err)
		}
		defer priv.Quit()
	}

	pm, err := manager.NewPrinterManager(c, g, priv, s, config.CUPSPrinterPollInterval,
		config.CUPSJobQueueSize, config.CUPSJobFullUsername, config.CUPSIgnoreRawPrinters,
		config.ShareScope, jobs, xmppNotifications)
	if err != nil {
		glog.Fatal(err)
	}
	defer pm.Quit()

	m, err := monitor.NewMonitor(c, g, pm, config.MonitorSocketFilename)
	if err != nil {
		glog.Fatal(err)
	}
	defer m.Quit()

	if config.CloudPrintingEnable {
		if config.LocalPrintingEnable {
			glog.Errorf("Ready to rock as proxy '%s' and in local mode", config.ProxyName)
			fmt.Printf("Ready to rock as proxy '%s' and in local mode\n", config.ProxyName)
		} else {
			glog.Errorf("Ready to rock as proxy '%s'", config.ProxyName)
			fmt.Printf("Ready to rock as proxy '%s'\n", config.ProxyName)
		}
	} else {
		glog.Error("Ready to rock in local-only mode")
		fmt.Println("Ready to rock in local-only mode")
	}

	waitIndefinitely()

	glog.Error("Shutting down")
	fmt.Println("")
	fmt.Println("Shutting down")
}
Example #5
0
func NewPrinterManager(cups *cups.CUPS, gcp *gcp.GoogleCloudPrint, xmpp *xmpp.XMPP, privet *privet.Privet, snmp *snmp.SNMPManager, printerPollInterval string, gcpMaxConcurrentDownload, cupsQueueSize uint, jobFullUsername, ignoreRawPrinters bool, shareScope string) (*PrinterManager, error) {
	// Get the GCP printer list.
	gcpPrinters, queuedJobsCount, err := allGCPPrinters(gcp)
	if err != nil {
		return nil, err
	}
	// Organize the GCP printers into a map.
	for i := range gcpPrinters {
		gcpPrinters[i].CUPSJobSemaphore = lib.NewSemaphore(cupsQueueSize)
	}
	gcpPrintersByGCPID := lib.NewConcurrentPrinterMap(gcpPrinters)

	// Construct.
	pm := PrinterManager{
		cups:   cups,
		gcp:    gcp,
		xmpp:   xmpp,
		privet: privet,
		snmp:   snmp,

		gcpPrintersByGCPID: gcpPrintersByGCPID,
		downloadSemaphore:  lib.NewSemaphore(gcpMaxConcurrentDownload),

		jobStatsMutex: sync.Mutex{},
		jobsDone:      0,
		jobsError:     0,

		gcpJobsInFlightMutex: sync.Mutex{},
		gcpJobsInFlight:      make(map[string]struct{}),

		cupsQueueSize:     cupsQueueSize,
		jobFullUsername:   jobFullUsername,
		ignoreRawPrinters: ignoreRawPrinters,
		shareScope:        shareScope,

		quit: make(chan struct{}),
	}

	// Sync once before returning, to make sure things are working.
	// Ignore privet updates this first time because Privet always starts
	// with zero printers.
	if err = pm.syncPrinters(true); err != nil {
		return nil, err
	}

	// Initialize Privet printers.
	if privet != nil {
		for _, printer := range pm.gcpPrintersByGCPID.GetAll() {
			getPrinter := func() (lib.Printer, bool) { return pm.gcpPrintersByGCPID.Get(printer.GCPID) }
			err := privet.AddPrinter(printer, getPrinter)
			if err != nil {
				glog.Warningf("Failed to register %s locally: %s", printer.Name, err)
			} else {
				glog.Infof("Registered %s locally", printer.Name)
			}
		}
	}

	ppi, err := time.ParseDuration(printerPollInterval)
	if err != nil {
		return nil, err
	}
	pm.syncPrintersPeriodically(ppi)
	if privet == nil {
		pm.listenNotifications(xmpp.Notifications(), make(chan *lib.Job))
	} else {
		pm.listenNotifications(xmpp.Notifications(), privet.Jobs())
	}

	for gcpID := range queuedJobsCount {
		go pm.handleNewGCPJobs(gcpID)
	}

	return &pm, nil
}