Golang logp.Critical函數代碼示例

func (beat *Beat) ConfigSetup(beater Beater, inputConfig interface{}) {

	config := &ConfigSettings{
	//Input: inputConfig,
	}

	err := cfgfile.Read(config)

	beat.Config = *config

	if err != nil {
		logp.Debug("Log read error", "Error %v\n", err)
	}

	logp.Init(beat.Name, &beat.Config.Logging)

	logp.Debug("main", "Initializing output plugins")

	if err := publisher.Publisher.Init(beat.Config.Output, beat.Config.Shipper); err != nil {
		logp.Critical(err.Error())
		os.Exit(1)
	}

	beat.events = publisher.Publisher.Queue

	logp.Debug(beat.Name, "Init %s", beat.Name)

	if err := beater.Init(beat); err != nil {

		logp.Critical(err.Error())
		os.Exit(1)
	}
}

func loadTLSConfig(config *TLSConfig) (*tlsConfig, error) {
	var tlsconfig tlsConfig

	// Support minimal TLS 1.0.
	// TODO: check supported JRuby versions for logstash supported
	//       TLS 1.1 and switch
	tlsconfig.MinVersion = tls.VersionTLS10

	hasCertificate := config.Certificate != ""
	hasKey := config.Key != ""
	switch {
	case hasCertificate && !hasKey:
		return nil, ErrCertificateNoKey
	case !hasCertificate && hasKey:
		return nil, ErrKeyNoCertificate
	case hasCertificate && hasKey:
		cert, err := tls.LoadX509KeyPair(config.Certificate, config.Key)
		if err != nil {
			logp.Critical("Failed loading client certificate", err)
			return nil, err
		}
		tlsconfig.Certificates = []tls.Certificate{cert}
	}

	if len(config.CAs) > 0 {
		tlsconfig.RootCAs = x509.NewCertPool()
	}
	for _, caFile := range config.CAs {
		pemData, err := ioutil.ReadFile(caFile)
		if err != nil {
			logp.Critical("Failed reading CA certificate: %s", err)
			return nil, err
		}

		block, _ := pem.Decode(pemData)
		if block == nil {
			logp.Critical("Failed to decode PEM. Is certificate %s valid?", caFile)
			return nil, ErrNotACertificate
		}
		if block.Type != "CERTIFICATE" {
			logp.Critical("PEM File %s is not a certificate", caFile)
			return nil, ErrNotACertificate
		}

		cert, err := x509.ParseCertificate(block.Bytes)
		if err != nil {
			logp.Critical("Failed to parse certificate file %s", caFile)
			return nil, ErrNotACertificate
		}

		tlsconfig.RootCAs.AddCert(cert)
	}

	return &tlsconfig, nil
}

// LoadTLSConfig will load a certificate from config with all TLS based keys
// defined. If Certificate and CertificateKey are configured, client authentication
// will be configured. If no CAs are configured, the host CA will be used by go
// built-in TLS support.
func LoadTLSConfig(config MothershipConfig) (*tls.Config, error) {
	certificate := config.Certificate
	key := config.CertificateKey
	rootCAs := config.CAs
	hasCertificate := certificate != ""
	hasKey := key != ""

	var certs []tls.Certificate
	switch {
	case hasCertificate && !hasKey:
		return nil, ErrCertificateNoKey
	case !hasCertificate && hasKey:
		return nil, ErrKeyNoCertificate
	case hasCertificate && hasKey:
		cert, err := tls.LoadX509KeyPair(certificate, key)
		if err != nil {
			logp.Critical("Failed loading client certificate", err)
			return nil, err
		}
		certs = []tls.Certificate{cert}
	}

	var roots *x509.CertPool
	if len(rootCAs) > 0 {
		roots = x509.NewCertPool()
		for _, caFile := range rootCAs {
			pemData, err := ioutil.ReadFile(caFile)
			if err != nil {
				logp.Critical("Failed reading CA certificate: %s", err)
				return nil, err
			}

			if ok := roots.AppendCertsFromPEM(pemData); !ok {
				return nil, ErrNotACertificate
			}
		}
	}

	insecureSkipVerify := false
	if config.TLSInsecure != nil {
		insecureSkipVerify = *config.TLSInsecure
	}

	// Support minimal TLS 1.0.
	// TODO: check supported JRuby versions for logstash supported
	//       TLS 1.1 and switch
	tlsConfig := tls.Config{
		MinVersion:         tls.VersionTLS10,
		Certificates:       certs,
		RootCAs:            roots,
		InsecureSkipVerify: insecureSkipVerify,
	}
	return &tlsConfig, nil
}

func (pb *Packetbeat) Run(b *beat.Beat) error {

	// run the sniffer in background
	go func() {
		err := pb.Sniff.Run()
		if err != nil {
			logp.Critical("Sniffer main loop failed: %v", err)
			os.Exit(1)
		}
		pb.over <- true
	}()

	// Startup successful, disable stderr logging if requested by
	// cmdline flag
	logp.SetStderr()

	logp.Debug("main", "Waiting for the sniffer to finish")

	// Wait for the goroutines to finish
	for _ = range pb.over {
		if !pb.Sniff.IsAlive() {
			break
		}
	}

	waitShutdown := pb.CmdLineArgs.WaitShutdown
	if waitShutdown != nil && *waitShutdown > 0 {
		time.Sleep(time.Duration(*waitShutdown) * time.Second)
	}

	return nil
}

func main() {

	// Create Beater object
	fb := &filebeat.Filebeat{}

	// Initi beat objectefile
	b := beat.NewBeat(Name, Version, fb)

	// Additional command line args are used to overwrite config options
	b.CommandLineSetup()

	// Loads base config
	b.LoadConfig()

	// Configures beat
	err := fb.Config(b)
	if err != nil {
		logp.Critical("Config error: %v", err)
		os.Exit(1)
	}

	// Run beat. This calls first beater.Setup,
	// then beater.Run and beater.Cleanup in the end
	b.Run()

}

// LoadConfig inits the config file and reads the default config information
// into Beat.Config. It exists the processes in case of errors.
func (b *Beat) LoadConfig() {

	err := cfgfile.Read(&b.Config, "")
	if err != nil {
		// logging not yet initialized, so using fmt.Printf
		fmt.Printf("%v\n", err)
		os.Exit(1)
	}

	err = logp.Init(b.Name, &b.Config.Logging)
	if err != nil {
		fmt.Printf("Error initializing logging: %v\n", err)
		os.Exit(1)
	}

	logp.Debug("beat", "Initializing output plugins")

	if err := publisher.Publisher.Init(b.Name, b.Version, b.Config.Output, b.Config.Shipper); err != nil {
		logp.Critical(err.Error())
		os.Exit(1)
	}

	b.Events = publisher.Publisher.Client()

	logp.Debug("beat", "Init %s", b.Name)
}

// LoadConfig inits the config file and reads the default config information
// into Beat.Config. It exists the processes in case of errors.
func (b *Beat) LoadConfig() {

	err := cfgfile.Read(&b.Config, "")
	if err != nil {
		// logging not yet initialized, so using fmt.Printf
		fmt.Printf("Loading config file error: %v\n", err)
		os.Exit(1)
	}

	err = logp.Init(b.Name, &b.Config.Logging)
	if err != nil {
		fmt.Printf("Error initializing logging: %v\n", err)
		os.Exit(1)
	}

	// Disable stderr logging if requested by cmdline flag
	logp.SetStderr()

	logp.Debug("beat", "Initializing output plugins")

	if err := publisher.Publisher.Init(b.Name, b.Config.Output, b.Config.Shipper); err != nil {
		fmt.Printf("Error Initialising publisher: %v\n", err)
		logp.Critical(err.Error())
		os.Exit(1)
	}

	b.Events = publisher.Publisher.Client()

	logp.Debug("beat", "Init %s", b.Name)
}

func (p *Pingbeat) Run(b *beat.Beat) error {
	p.isAlive = true

	fp := fastping.NewPinger()

	errInput, err := fp.Network(p.pingType)
	if err != nil {
		logp.Critical("Error: %v (input %v)", err, errInput)
		os.Exit(1)
	}

	if p.useIPv4 {
		for addr, details := range p.ipv4targets {
			logp.Debug("pingbeat", "Adding target IP: %s, Name: %s, Tag: %s\n", addr, details[0], details[1])
			fp.AddIP(addr)
		}
	}
	if p.useIPv6 {
		for addr, details := range p.ipv6targets {
			logp.Debug("pingbeat", "Adding target IP: %s, Name: %s, Tag: %s\n", addr, details[0], details[1])
			fp.AddIP(addr)
		}
	}
	fp.OnRecv = func(addr *net.IPAddr, rtt time.Duration) {
		var name, tag string
		ip := addr.IP
		if ip.To4() != nil {
			name = p.ipv4targets[addr.String()][0]
			tag = p.ipv4targets[addr.String()][1]
		} else {
			name = p.ipv6targets[addr.String()][0]
			tag = p.ipv6targets[addr.String()][1]
		}
		event := common.MapStr{
			"timestamp":   common.Time(time.Now()),
			"type":        "pingbeat",
			"target_name": name,
			"target_addr": addr.String(),
			"tag":         tag,
			"rtt":         milliSeconds(rtt),
		}
		p.events.PublishEvent(event)
	}
	// fp.OnIdle = func() {
	// 	fmt.Println("loop done")
	// }
	for p.isAlive {
		time.Sleep(p.period)
		err := fp.Run()
		if err != nil {
			logp.Warn("Warning: %v", err)
		}
	}

	return nil
}

func (p *Pingbeat) Config(b *beat.Beat) error {
	// Read in provided config file, bail if problem
	err := cfgfile.Read(&p.config, "")
	if err != nil {
		logp.Err("Error reading configuration file: %v", err)
		return err
	}

	// Use period provided in config or default to 5s
	if p.config.Input.Period != nil {
		p.period = time.Duration(*p.config.Input.Period) * time.Second
	} else {
		p.period = 5 * time.Second
	}
	logp.Debug("pingbeat", "Period %v\n", p.period)

	// Check if we can use privileged (i.e. raw socket) ping,
	// else use a UDP ping
	if *p.config.Input.Privileged {
		p.pingType = "ip"
	} else {
		p.pingType = "udp"
	}
	logp.Debug("pingbeat", "Using %v for pings\n", p.pingType)

	// Check whether IPv4/IPv6 pings are requested in config
	// Default to just IPv4 pings
	if &p.config.Input.UseIPv4 != nil {
		p.useIPv4 = *p.config.Input.UseIPv4
	} else {
		p.useIPv4 = true
	}
	if &p.config.Input.UseIPv6 != nil {
		p.useIPv6 = *p.config.Input.UseIPv6
	} else {
		p.useIPv6 = false
	}
	logp.Debug("pingbeat", "IPv4: %v, IPv6: %v\n", p.useIPv4, p.useIPv6)

	// Fill the IPv4/IPv6 targets maps
	p.ipv4targets = make(map[string][2]string)
	p.ipv6targets = make(map[string][2]string)
	if p.config.Input.Targets != nil {
		for tag, targets := range *p.config.Input.Targets {
			for i := 0; i < len(targets); i++ {
				p.AddTarget(targets[i], tag)
			}
		}
	} else {
		logp.Critical("Error: no targets specified, cannot continue!")
		os.Exit(1)
	}

	return nil
}

// Run calls the beater Setup and Run methods. In case of errors
// during the setup phase, it exits the process.
func (b *Beat) Run() {

	// Setup beater object
	err := b.BT.Setup(b)
	if err != nil {
		logp.Critical("Setup returned an error: %v", err)
		os.Exit(1)
	}

	// Up to here was the initialization, now about running
	if cfgfile.IsTestConfig() {
		// all good, exit with 0
		os.Exit(0)
	}
	service.BeforeRun()

	// Callback is called if the processes is asked to stop.
	// This needs to be called before the main loop is started so that
	// it can register the signals that stop or query (on Windows) the loop.
	service.HandleSignals(b.BT.Stop)

	// Startup successful, disable stderr logging if requested by
	// cmdline flag
	logp.SetStderr()

	// Run beater specific stuff
	err = b.BT.Run(b)
	if err != nil {
		logp.Critical("Run returned an error: %v", err)
	}

	service.Cleanup()

	logp.Debug("beat", "Cleanup")

	// Call beater cleanup function
	err = b.BT.Cleanup(b)
	if err != nil {
		logp.Err("Cleanup returned an error: %v", err)
	}
}

// Run calls the beater Setup and Run methods. In case of errors
// during the setup phase, it exits the process.
func (b *Beat) Run() {

	// Setup beater object
	err := b.BT.Setup(b)
	if err != nil {
		logp.Critical("Setup returned an error: %v", err)
		os.Exit(1)
	}

	// Up to here was the initialization, now about running
	if cfgfile.IsTestConfig() {
		// all good, exit with 0
		os.Exit(0)
	}
	service.BeforeRun()

	// Callback is called if the processes is asked to stop.
	// This needs to be called before the main loop is started so that
	// it can register the signals that stop or query (on Windows) the loop.
	service.HandleSignals(b.BT.Stop)

	logp.Info("%s sucessfully setup. Start running.", b.Name)

	// Run beater specific stuff
	err = b.BT.Run(b)
	if err != nil {
		logp.Critical("Run returned an error: %v", err)
	}

	service.Cleanup()

	logp.Info("Cleaning up %s before shutting down.", b.Name)

	// Call beater cleanup function
	err = b.BT.Cleanup(b)
	if err != nil {
		logp.Err("Cleanup returned an error: %v", err)
	}
}

func (crawler *Crawler) Start(files []config.ProspectorConfig, eventChan chan *input.FileEvent) {

	pendingProspectorCnt := 0
	crawler.running = true

	// Prospect the globs/paths given on the command line and launch harvesters
	for _, fileconfig := range files {

		logp.Debug("prospector", "File Configs: %v", fileconfig.Paths)

		prospector := &Prospector{
			ProspectorConfig: fileconfig,
			registrar:        crawler.Registrar,
		}

		err := prospector.Init()
		if err != nil {
			logp.Critical("Error in initing prospector: %s", err)
			fmt.Printf("Error in initing prospector: %s", err)
			os.Exit(1)
		}

		go prospector.Run(eventChan)
		pendingProspectorCnt++
	}

	// Now determine which states we need to persist by pulling the events from the prospectors
	// When we hit a nil source a prospector had finished so we decrease the expected events
	logp.Debug("prospector", "Waiting for %d prospectors to initialise", pendingProspectorCnt)

	for event := range crawler.Registrar.Persist {
		if event.Source == nil {

			pendingProspectorCnt--
			if pendingProspectorCnt == 0 {
				logp.Debug("prospector", "No pending prospectors. Finishing setup")
				break
			}
			continue
		}
		crawler.Registrar.State[*event.Source] = event
		logp.Debug("prospector", "Registrar will re-save state for %s", *event.Source)

		if !crawler.running {
			break
		}
	}

	logp.Info("All prospectors initialised with %d states to persist", len(crawler.Registrar.State))
}

func (p *Pingbeat) Config(b *beat.Beat) error {
	err := cfgfile.Read(&p.config, "")
	if err != nil {
		logp.Err("Error reading configuration file: %v", err)
		return err
	}

	if p.config.Input.Period != nil {
		p.period = time.Duration(*p.config.Input.Period) * time.Second
	} else {
		p.period = 1 * time.Second
	}
	logp.Debug("pingbeat", "Period %v\n", p.period)

	if *p.config.Input.Privileged {
		p.pingType = "ip"
	} else {
		p.pingType = "udp"
	}
	logp.Debug("pingbeat", "Using %v for pings\n", p.pingType)

	if &p.config.Input.UseIPv4 != nil {
		p.useIPv4 = *p.config.Input.UseIPv4
	} else {
		p.useIPv4 = true
	}
	if &p.config.Input.UseIPv6 != nil {
		p.useIPv6 = *p.config.Input.UseIPv6
	} else {
		p.useIPv6 = false
	}
	logp.Debug("pingbeat", "IPv4: %v, IPv6: %v\n", p.useIPv4, p.useIPv6)

	p.ipv4targets = make(map[string][2]string)
	p.ipv6targets = make(map[string][2]string)
	if p.config.Input.Targets != nil {
		for tag, targets := range *p.config.Input.Targets {
			for i := 0; i < len(targets); i++ {
				p.AddTarget(targets[i], tag)
			}
		}
	} else {
		logp.Critical("Error: no targets specified, cannot continue!")
		os.Exit(1)
	}

	return nil
}

func main() {
	gb := &Gzipbeat{}

	b := beat.NewBeat(Name, Version, gb)

	b.CommandLineSetup()

	b.LoadConfig()
	err := gb.Config(b)
	if err != nil {
		logp.Critical("Config error: %v", err)
		os.Exit(1)
	}

	b.Run()
}

// Check that the file isn't a symlink, mode is regular or file is nil
func (f *File) IsRegularFile() bool {
	if f.File == nil {
		logp.Critical("Harvester: BUG: f arg is nil")
		return false
	}

	info, e := f.File.Stat()
	if e != nil {
		logp.Err("File check fault: stat error: %s", e.Error())
		return false
	}

	if !info.Mode().IsRegular() {
		logp.Warn("Harvester: not a regular file: %q %s", info.Mode(), info.Name())
		return false
	}
	return true
}