func TestPipes(t *testing.T) {
	oldNewPipe := controls.NewPipe
	defer func() { controls.NewPipe = oldNewPipe }()
	controls.NewPipe = func(_ controls.PipeClient, _ string) (string, xfer.Pipe, error) {
		return "pipeid", mockPipe{}, nil
	}

	mdc := newMockClient()
	setupStubs(mdc, func() {
		registry, _ := docker.NewRegistry(10*time.Second, nil)
		defer registry.Stop()

		test.Poll(t, 100*time.Millisecond, true, func() interface{} {
			_, ok := registry.GetContainer("ping")
			return ok
		})

		for _, tc := range []string{
			docker.AttachContainer,
			docker.ExecContainer,
		} {
			result := controls.HandleControlRequest(xfer.Request{
				Control: tc,
				NodeID:  report.MakeContainerNodeID("ping"),
			})
			want := xfer.Response{
				Pipe:   "pipeid",
				RawTTY: true,
			}
			if !reflect.DeepEqual(result, want) {
				t.Errorf("diff: %s", test.Diff(want, result))
			}
		}
	})
}

func TestControls(t *testing.T) {
	mdc := newMockClient()
	setupStubs(mdc, func() {
		registry, _ := docker.NewRegistry(10*time.Second, nil)
		defer registry.Stop()

		for _, tc := range []struct{ command, result string }{
			{docker.StopContainer, "stopped"},
			{docker.StartContainer, "started"},
			{docker.RestartContainer, "restarted"},
			{docker.PauseContainer, "paused"},
			{docker.UnpauseContainer, "unpaused"},
		} {
			result := controls.HandleControlRequest(xfer.Request{
				Control: tc.command,
				NodeID:  report.MakeContainerNodeID("a1b2c3d4e5"),
			})
			if !reflect.DeepEqual(result, xfer.Response{
				Error: tc.result,
			}) {
				t.Error(result)
			}
		}
	})
}

func TestRegistryEvents(t *testing.T) {
	mdc := newMockClient()
	setupStubs(mdc, func() {
		registry, _ := docker.NewRegistry(10 * time.Second)
		defer registry.Stop()
		runtime.Gosched()

		check := func(want []docker.Container) {
			test.Poll(t, 100*time.Millisecond, want, func() interface{} {
				return allContainers(registry)
			})
		}

		{
			mdc.Lock()
			mdc.apiContainers = []client.APIContainers{apiContainer1, apiContainer2}
			mdc.containers["wiff"] = container2
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.StartEvent, ID: "wiff"})
			runtime.Gosched()

			want := []docker.Container{&mockContainer{container1}, &mockContainer{container2}}
			check(want)
		}

		{
			mdc.Lock()
			mdc.apiContainers = []client.APIContainers{apiContainer1}
			delete(mdc.containers, "wiff")
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "wiff"})
			runtime.Gosched()

			want := []docker.Container{&mockContainer{container1}}
			check(want)
		}

		{
			mdc.Lock()
			mdc.apiContainers = []client.APIContainers{}
			delete(mdc.containers, "ping")
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "ping"})
			runtime.Gosched()

			want := []docker.Container{}
			check(want)
		}

		{
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "doesntexist"})
			runtime.Gosched()

			want := []docker.Container{}
			check(want)
		}
	})
}

func TestLookupByPID(t *testing.T) {
	mdc := newMockClient()
	setupStubs(mdc, func() {
		registry, _ := docker.NewRegistry(10 * time.Second)
		defer registry.Stop()

		want := docker.Container(&mockContainer{container1})
		test.Poll(t, 100*time.Millisecond, want, func() interface{} {
			var have docker.Container
			registry.LockedPIDLookup(func(lookup func(int) docker.Container) {
				have = lookup(1)
			})
			return have
		})
	})
}

func main() {
	dockerRegistry, err := docker.NewRegistry(pollInterval, nil)
	if err != nil {
		log.Fatalf("Could start docker watcher: %v", err)
	}

	store := newStore()
	tracer := tracer{
		store:  store,
		ptrace: ptrace.NewPTracer(store),
		docker: dockerRegistry,
	}
	defer tracer.Stop()

	go tracer.http(6060)
	<-handleSignals()
}

func TestRegistry(t *testing.T) {
	mdc := newMockClient()
	setupStubs(mdc, func() {
		registry, _ := docker.NewRegistry(10 * time.Second)
		defer registry.Stop()
		runtime.Gosched()

		{
			want := []docker.Container{&mockContainer{container1}}
			test.Poll(t, 100*time.Millisecond, want, func() interface{} {
				return allContainers(registry)
			})
		}

		{
			want := []*client.APIImages{&apiImage1}
			test.Poll(t, 100*time.Millisecond, want, func() interface{} {
				return allImages(registry)
			})
		}
	})
}

func TestRegistry(t *testing.T) {
	mdc := mockClient // take a copy
	setupStubs(&mdc, func() {
		registry, _ := docker.NewRegistry(10 * time.Second)
		defer registry.Stop()
		runtime.Gosched()

		{
			want := []docker.Container{&mockContainer{container1}}
			test.Poll(t, 10*time.Millisecond, want, func() interface{} {
				return allContainers(registry)
			})
		}

		{
			have := allImages(registry)
			want := []*client.APIImages{&apiImage1}
			if !reflect.DeepEqual(want, have) {
				t.Errorf("%s", test.Diff(want, have))
			}
		}
	})
}

// Main runs the probe
func probeMain() {
	var (
		targets         = []string{fmt.Sprintf("localhost:%d", xfer.AppPort)}
		token           = flag.String("token", "default-token", "probe token")
		httpListen      = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval     = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		spyProcs        = flag.Bool("processes", true, "report processes (needs root)")
		procRoot        = flag.String("proc.root", "/proc", "location of the proc filesystem")
		useConntrack    = flag.Bool("conntrack", true, "also use conntrack to track connections")
		insecure        = flag.Bool("insecure", false, "(SSL) explicitly allow \"insecure\" SSL connections and transfers")
		logPrefix       = flag.String("log.prefix", "<probe>", "prefix for each log line")
		logLevel        = flag.String("log.level", "info", "logging threshold level: debug|info|warn|error|fatal|panic")

		dockerEnabled  = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge   = flag.String("docker.bridge", "docker0", "the docker bridge name")

		kubernetesEnabled  = flag.Bool("kubernetes", false, "collect kubernetes-related attributes for containers, should only be enabled on the master node")
		kubernetesAPI      = flag.String("kubernetes.api", "", "Address of kubernetes master api")
		kubernetesInterval = flag.Duration("kubernetes.interval", 10*time.Second, "how often to do a full resync of the kubernetes data")

		weaveRouterAddr = flag.String("weave.router.addr", "127.0.0.1:6784", "IP address & port of the Weave router")
		weaveDNSTarget  = flag.String("weave.hostname", fmt.Sprintf("scope.weave.local:%d", xfer.AppPort), "Hostname to lookup in weaveDNS")
	)
	flag.Parse()

	setLogLevel(*logLevel)
	setLogFormatter(*logPrefix)

	// Setup in memory metrics sink
	inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
	sig := metrics.DefaultInmemSignal(inm)
	defer sig.Stop()
	metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)

	defer log.Info("probe exiting")

	if *spyProcs && os.Getegid() != 0 {
		log.Warn("-process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	probeID := strconv.FormatInt(rand.Int63(), 16)
	var (
		hostName = hostname.Get()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Infof("probe starting, version %s, ID %s", version, probeID)
	go check()

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Infof("publishing to: %s", strings.Join(targets, ", "))

	probeConfig := appclient.ProbeConfig{
		Token:    *token,
		ProbeID:  probeID,
		Insecure: *insecure,
	}
	clients := appclient.NewMultiAppClient(func(hostname, endpoint string) (appclient.AppClient, error) {
		return appclient.NewAppClient(
			probeConfig, hostname, endpoint,
			xfer.ControlHandlerFunc(controls.HandleControlRequest),
		)
	})
	defer clients.Stop()

	resolver := appclient.NewResolver(targets, net.LookupIP, clients.Set)
	defer resolver.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))
	scanner := procspy.NewConnectionScanner(processCache)

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack, scanner)
	defer endpointReporter.Stop()

	p := probe.New(*spyInterval, *publishInterval, clients)
	p.AddTicker(processCache)
	p.AddReporter(
		endpointReporter,
		host.NewReporter(hostID, hostName),
		process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies),
	)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID, probeID))

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Errorf("Docker: problem with bridge %s: %v", *dockerBridge, err)
		}
		if registry, err := docker.NewRegistry(*dockerInterval, clients); err == nil {
			defer registry.Stop()
			p.AddTagger(docker.NewTagger(registry, processCache))
			p.AddReporter(docker.NewReporter(registry, hostID, p))
		} else {
			log.Errorf("Docker: failed to start registry: %v", err)
		}
	}
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	var (
		hostName = probe.Hostname()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Printf("probe starting, version %s, ID %s", version, probeID)

	addrs, err := net.InterfaceAddrs()
	if err != nil {
		log.Fatal(err)
	}
	localNets := report.Networks{}
	for _, addr := range addrs {
		// Not all addrs are IPNets.
		if ipNet, ok := addr.(*net.IPNet); ok {
			localNets = append(localNets, ipNet)
		}
	}

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Printf("publishing to: %s", strings.Join(targets, ", "))

	factory := func(hostname, endpoint string) (string, xfer.Publisher, error) {
		id, publisher, err := xfer.NewHTTPPublisher(hostname, endpoint, *token, probeID, *insecure)
		if err != nil {
			return "", nil, err
		}
		return id, xfer.NewBackgroundPublisher(publisher), nil
	}

	publishers := xfer.NewMultiPublisher(factory)
	defer publishers.Stop()

	clients := xfer.NewMultiAppClient(xfer.ProbeConfig{
		Token:    *token,
		ProbeID:  probeID,
		Insecure: *insecure,
	}, xfer.ControlHandlerFunc(controls.HandleControlRequest), xfer.NewAppClient)
	defer clients.Stop()

	resolver := xfer.NewStaticResolver(targets, publishers.Set, clients.Set)
	defer resolver.Stop()

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack)
	defer endpointReporter.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))
	p := probe.New(*spyInterval, *publishInterval, publishers)
	p.AddTicker(processCache)
	p.AddReporter(
		endpointReporter,
		host.NewReporter(hostID, hostName, localNets),
		process.NewReporter(processCache, hostID),
	)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID, probeID))

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Printf("Docker: problem with bridge %s: %v", *dockerBridge, err)
		}
		if registry, err := docker.NewRegistry(*dockerInterval); err == nil {
			defer registry.Stop()
			p.AddTagger(docker.NewTagger(registry, processCache))
			p.AddReporter(docker.NewReporter(registry, hostID, p))
		} else {
			log.Printf("Docker: failed to start registry: %v", err)
		}
	}

	if *kubernetesEnabled {
		if client, err := kubernetes.NewClient(*kubernetesAPI, *kubernetesInterval); err == nil {
			defer client.Stop()
			p.AddReporter(kubernetes.NewReporter(client))
		} else {
			log.Printf("Kubernetes: failed to start client: %v", err)
		}
	}

	if *weaveRouterAddr != "" {
		weave := overlay.NewWeave(hostID, *weaveRouterAddr)
		defer weave.Stop()
		p.AddTicker(weave)
		p.AddTagger(weave)
		p.AddReporter(weave)
	}

	if *httpListen != "" {
		go func() {
			log.Printf("Profiling data being exported to %s", *httpListen)
			log.Printf("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
			log.Printf("Profiling endpoint %s terminated: %v", *httpListen, http.ListenAndServe(*httpListen, nil))
		}()
	}

	p.Start()
	defer p.Stop()

	log.Printf("%s", <-interrupt())
}

// Main runs the probe
func probeMain(flags probeFlags) {
	setLogLevel(flags.logLevel)
	setLogFormatter(flags.logPrefix)

	// Setup in memory metrics sink
	inm := metrics.NewInmemSink(time.Minute, 2*time.Minute)
	sig := metrics.DefaultInmemSignal(inm)
	defer sig.Stop()
	metrics.NewGlobal(metrics.DefaultConfig("scope-probe"), inm)

	defer log.Info("probe exiting")

	if flags.spyProcs && os.Getegid() != 0 {
		log.Warn("--probe.process=true, but that requires root to find everything")
	}

	rand.Seed(time.Now().UnixNano())
	var (
		probeID  = strconv.FormatInt(rand.Int63(), 16)
		hostName = hostname.Get()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
	)
	log.Infof("probe starting, version %s, ID %s", version, probeID)
	log.Infof("command line: %v", os.Args)
	checkpointFlags := map[string]string{}
	if flags.kubernetesEnabled {
		checkpointFlags["kubernetes_enabled"] = "true"
	}
	go check(checkpointFlags)

	var targets = []string{}
	if flags.token != "" {
		// service mode
		if len(flag.Args()) == 0 {
			targets = append(targets, defaultServiceHost)
		}
	} else if !flags.noApp {
		targets = append(targets, fmt.Sprintf("localhost:%d", xfer.AppPort))
	}
	targets = append(targets, flag.Args()...)
	log.Infof("publishing to: %s", strings.Join(targets, ", "))

	probeConfig := appclient.ProbeConfig{
		Token:        flags.token,
		ProbeVersion: version,
		ProbeID:      probeID,
		Insecure:     flags.insecure,
	}
	clients := appclient.NewMultiAppClient(func(hostname, endpoint string) (appclient.AppClient, error) {
		return appclient.NewAppClient(
			probeConfig, hostname, endpoint,
			xfer.ControlHandlerFunc(controls.HandleControlRequest),
		)
	})
	defer clients.Stop()

	dnsLookupFn := net.LookupIP
	if flags.resolver != "" {
		dnsLookupFn = appclient.LookupUsing(flags.resolver)
	}
	resolver := appclient.NewResolver(targets, dnsLookupFn, clients.Set)
	defer resolver.Stop()

	p := probe.New(flags.spyInterval, flags.publishInterval, clients)

	hostReporter := host.NewReporter(hostID, hostName, probeID, version, clients)
	defer hostReporter.Stop()
	p.AddReporter(hostReporter)
	p.AddTagger(probe.NewTopologyTagger(), host.NewTagger(hostID))

	var processCache *process.CachingWalker
	var scanner procspy.ConnectionScanner
	if flags.procEnabled {
		processCache = process.NewCachingWalker(process.NewWalker(flags.procRoot))
		scanner = procspy.NewConnectionScanner(processCache)
		p.AddTicker(processCache)
		p.AddReporter(process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies))
	}

	endpointReporter := endpoint.NewReporter(hostID, hostName, flags.spyProcs, flags.useConntrack, flags.procEnabled, scanner)
	defer endpointReporter.Stop()
	p.AddReporter(endpointReporter)

	if flags.dockerEnabled {
		// Don't add the bridge in Kubernetes since container IPs are global and
		// shouldn't be scoped
		if !flags.kubernetesEnabled {
			if err := report.AddLocalBridge(flags.dockerBridge); err != nil {
				log.Errorf("Docker: problem with bridge %s: %v", flags.dockerBridge, err)
			}
		}
		if registry, err := docker.NewRegistry(flags.dockerInterval, clients, true, hostID); err == nil {
			defer registry.Stop()
			if flags.procEnabled {
				p.AddTagger(docker.NewTagger(registry, processCache))
			}
			p.AddReporter(docker.NewReporter(registry, hostID, probeID, p))
		} else {
			log.Errorf("Docker: failed to start registry: %v", err)
//.........这里部分代码省略.........

func main() {
	var (
		targets            = []string{fmt.Sprintf("localhost:%d", xfer.AppPort), fmt.Sprintf("scope.weave.local:%d", xfer.AppPort)}
		token              = flag.String("token", "default-token", "probe token")
		httpListen         = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval    = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval        = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		prometheusEndpoint = flag.String("prometheus.endpoint", "/metrics", "Prometheus metrics exposition endpoint (requires -http.listen)")
		spyProcs           = flag.Bool("processes", true, "report processes (needs root)")
		dockerEnabled      = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval     = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge       = flag.String("docker.bridge", "docker0", "the docker bridge name")
		weaveRouterAddr    = flag.String("weave.router.addr", "", "IP address or FQDN of the Weave router")
		procRoot           = flag.String("proc.root", "/proc", "location of the proc filesystem")
		printVersion       = flag.Bool("version", false, "print version number and exit")
		useConntrack       = flag.Bool("conntrack", true, "also use conntrack to track connections")
		logPrefix          = flag.String("log.prefix", "<probe>", "prefix for each log line")
	)
	flag.Parse()

	if *printVersion {
		fmt.Println(version)
		return
	}

	if !strings.HasSuffix(*logPrefix, " ") {
		*logPrefix += " "
	}
	log.SetPrefix(*logPrefix)

	defer log.Print("probe exiting")

	if *spyProcs && os.Getegid() != 0 {
		log.Printf("warning: -process=true, but that requires root to find everything")
	}

	var (
		hostName = hostname()
		hostID   = hostName // TODO(pb): we should sanitize the hostname
		probeID  = hostName // TODO(pb): does this need to be a random string instead?
	)
	log.Printf("probe starting, version %s, ID %s", version, probeID)

	addrs, err := net.InterfaceAddrs()
	if err != nil {
		log.Fatal(err)
	}
	localNets := report.Networks{}
	for _, addr := range addrs {
		// Not all addrs are IPNets.
		if ipNet, ok := addr.(*net.IPNet); ok {
			localNets = append(localNets, ipNet)
		}
	}

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Printf("publishing to: %s", strings.Join(targets, ", "))

	factory := func(endpoint string) (string, xfer.Publisher, error) {
		id, publisher, err := xfer.NewHTTPPublisher(endpoint, *token, probeID)
		if err != nil {
			return "", nil, err
		}
		return id, xfer.NewBackgroundPublisher(publisher), nil
	}

	publishers := xfer.NewMultiPublisher(factory)
	defer publishers.Stop()

	resolver := newStaticResolver(targets, publishers.Set)
	defer resolver.Stop()

	endpointReporter := endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack)
	defer endpointReporter.Stop()

	processCache := process.NewCachingWalker(process.NewWalker(*procRoot))

	var (
		tickers   = []Ticker{processCache}
		reporters = []Reporter{endpointReporter, host.NewReporter(hostID, hostName, localNets), process.NewReporter(processCache, hostID)}
		taggers   = []Tagger{newTopologyTagger(), host.NewTagger(hostID)}
	)

	dockerTagger, dockerReporter, dockerRegistry := func() (*docker.Tagger, *docker.Reporter, docker.Registry) {
		if !*dockerEnabled {
			return nil, nil, nil
		}
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Printf("Docker: problem with bridge %s: %v", *dockerBridge, err)
			return nil, nil, nil
		}
		registry, err := docker.NewRegistry(*dockerInterval)
		if err != nil {
			log.Printf("Docker: failed to start registry: %v", err)
			return nil, nil, nil
		}
		return docker.NewTagger(registry, processCache), docker.NewReporter(registry, hostID), registry
	}()
//.........这里部分代码省略.........

func TestRegistryEvents(t *testing.T) {
	mdc := mockClient // take a copy
	setupStubs(&mdc, func() {
		registry, _ := docker.NewRegistry(10 * time.Second)
		defer registry.Stop()
		runtime.Gosched()

		{
			mdc.Lock()
			mdc.containers["wiff"] = container2
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.StartEvent, ID: "wiff"})
			runtime.Gosched()

			have := allContainers(registry)
			want := []docker.Container{&mockContainer{container1}, &mockContainer{container2}}
			if !reflect.DeepEqual(want, have) {
				t.Errorf("%s", test.Diff(want, have))
			}
		}

		{
			mdc.Lock()
			delete(mdc.containers, "wiff")
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "wiff"})
			runtime.Gosched()

			have := allContainers(registry)
			want := []docker.Container{&mockContainer{container1}}
			if !reflect.DeepEqual(want, have) {
				t.Errorf("%s", test.Diff(want, have))
			}
		}

		{
			mdc.Lock()
			delete(mdc.containers, "ping")
			mdc.Unlock()
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "ping"})
			runtime.Gosched()

			have := allContainers(registry)
			want := []docker.Container{}
			if !reflect.DeepEqual(want, have) {
				t.Errorf("%s", test.Diff(want, have))
			}
		}

		{
			mdc.send(&client.APIEvents{Status: docker.DieEvent, ID: "doesntexist"})
			runtime.Gosched()

			have := allContainers(registry)
			want := []docker.Container{}
			if !reflect.DeepEqual(want, have) {
				t.Errorf("%s", test.Diff(want, have))
			}
		}
	})
}

func main() {
	var (
		targets            = []string{fmt.Sprintf("localhost:%d", xfer.AppPort), fmt.Sprintf("scope.weave.local:%d", xfer.AppPort)}
		token              = flag.String("token", "default-token", "probe token")
		httpListen         = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval    = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval        = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		prometheusEndpoint = flag.String("prometheus.endpoint", "/metrics", "Prometheus metrics exposition endpoint (requires -http.listen)")
		spyProcs           = flag.Bool("processes", true, "report processes (needs root)")
		dockerEnabled      = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval     = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge       = flag.String("docker.bridge", "docker0", "the docker bridge name")
		weaveRouterAddr    = flag.String("weave.router.addr", "", "IP address or FQDN of the Weave router")
		procRoot           = flag.String("proc.root", "/proc", "location of the proc filesystem")
		captureEnabled     = flag.Bool("capture", false, "perform sampled packet capture")
		captureInterfaces  = flag.String("capture.interfaces", interfaces(), "packet capture on these interfaces")
		captureOn          = flag.Duration("capture.on", 1*time.Second, "packet capture duty cycle 'on'")
		captureOff         = flag.Duration("capture.off", 5*time.Second, "packet capture duty cycle 'off'")
		printVersion       = flag.Bool("version", false, "print version number and exit")
		useConntrack       = flag.Bool("conntrack", true, "also use conntrack to track connections")
	)
	flag.Parse()

	if *printVersion {
		fmt.Println(version)
		return
	}

	var (
		hostName = hostname()
		hostID   = hostName // TODO: we should sanitize the hostname
		probeID  = hostName // TODO: does this need to be a random string instead?
	)
	log.Printf("probe starting, version %s, ID %s", version, probeID)

	if len(flag.Args()) > 0 {
		targets = flag.Args()
	}
	log.Printf("publishing to: %s", strings.Join(targets, ", "))

	procspy.SetProcRoot(*procRoot)

	if *httpListen != "" {
		log.Printf("profiling data being exported to %s", *httpListen)
		log.Printf("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
		if *prometheusEndpoint != "" {
			log.Printf("exposing Prometheus endpoint at %s%s", *httpListen, *prometheusEndpoint)
			http.Handle(*prometheusEndpoint, makePrometheusHandler())
		}
		go func() {
			err := http.ListenAndServe(*httpListen, nil)
			log.Print(err)
		}()
	}

	if *spyProcs && os.Getegid() != 0 {
		log.Printf("warning: process reporting enabled, but that requires root to find everything")
	}

	publisherFactory := func(target string) (xfer.Publisher, error) { return xfer.NewHTTPPublisher(target, *token, probeID) }
	publishers := xfer.NewMultiPublisher(publisherFactory)
	resolver := newStaticResolver(targets, publishers.Add)
	defer resolver.Stop()

	addrs, err := net.InterfaceAddrs()
	if err != nil {
		log.Fatal(err)
	}
	localNets := report.Networks{}
	for _, addr := range addrs {
		// Not all addrs are IPNets.
		if ipNet, ok := addr.(*net.IPNet); ok {
			localNets = append(localNets, ipNet)
		}
	}

	var (
		endpointReporter = endpoint.NewReporter(hostID, hostName, *spyProcs, *useConntrack)
		processCache     = process.NewCachingWalker(process.NewWalker(*procRoot))
		reporters        = []Reporter{
			endpointReporter,
			host.NewReporter(hostID, hostName, localNets),
			process.NewReporter(processCache, hostID),
		}
		taggers = []Tagger{newTopologyTagger(), host.NewTagger(hostID)}
	)
	defer endpointReporter.Stop()

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Fatalf("failed to get docker bridge address: %v", err)
		}

		dockerRegistry, err := docker.NewRegistry(*dockerInterval)
		if err != nil {
			log.Fatalf("failed to start docker registry: %v", err)
		}
		defer dockerRegistry.Stop()

		taggers = append(taggers, docker.NewTagger(dockerRegistry, processCache))
//.........这里部分代码省略.........

func main() {
	var (
		httpListen         = flag.String("http.listen", "", "listen address for HTTP profiling and instrumentation server")
		publishInterval    = flag.Duration("publish.interval", 3*time.Second, "publish (output) interval")
		spyInterval        = flag.Duration("spy.interval", time.Second, "spy (scan) interval")
		listen             = flag.String("listen", ":"+strconv.Itoa(xfer.ProbePort), "listen address")
		prometheusEndpoint = flag.String("prometheus.endpoint", "/metrics", "Prometheus metrics exposition endpoint (requires -http.listen)")
		spyProcs           = flag.Bool("processes", true, "report processes (needs root)")
		dockerEnabled      = flag.Bool("docker", false, "collect Docker-related attributes for processes")
		dockerInterval     = flag.Duration("docker.interval", 10*time.Second, "how often to update Docker attributes")
		dockerBridge       = flag.String("docker.bridge", "docker0", "the docker bridge name")
		weaveRouterAddr    = flag.String("weave.router.addr", "", "IP address or FQDN of the Weave router")
		procRoot           = flag.String("proc.root", "/proc", "location of the proc filesystem")
	)
	flag.Parse()

	if len(flag.Args()) != 0 {
		flag.Usage()
		os.Exit(1)
	}

	log.Printf("probe version %s", version)

	procspy.SetProcRoot(*procRoot)

	if *httpListen != "" {
		log.Printf("profiling data being exported to %s", *httpListen)
		log.Printf("go tool pprof http://%s/debug/pprof/{profile,heap,block}", *httpListen)
		if *prometheusEndpoint != "" {
			log.Printf("exposing Prometheus endpoint at %s%s", *httpListen, *prometheusEndpoint)
			http.Handle(*prometheusEndpoint, makePrometheusHandler())
		}
		go func() {
			err := http.ListenAndServe(*httpListen, nil)
			log.Print(err)
		}()
	}

	if *spyProcs && os.Getegid() != 0 {
		log.Printf("warning: process reporting enabled, but that requires root to find everything")
	}

	publisher, err := xfer.NewTCPPublisher(*listen)
	if err != nil {
		log.Fatal(err)
	}
	defer publisher.Close()

	var (
		hostName     = hostname()
		hostID       = hostName // TODO: we should sanitize the hostname
		taggers      = []Tagger{newTopologyTagger(), host.NewTagger(hostID)}
		reporters    = []Reporter{host.NewReporter(hostID, hostName), endpoint.NewReporter(hostID, hostName, *spyProcs)}
		processCache *process.CachingWalker
	)

	processCache = process.NewCachingWalker(process.NewWalker(*procRoot))
	reporters = append(reporters, process.NewReporter(processCache, hostID))

	if *dockerEnabled {
		if err := report.AddLocalBridge(*dockerBridge); err != nil {
			log.Fatalf("failed to get docker bridge address: %v", err)
		}

		dockerRegistry, err := docker.NewRegistry(*dockerInterval)
		if err != nil {
			log.Fatalf("failed to start docker registry: %v", err)
		}
		defer dockerRegistry.Stop()

		taggers = append(taggers, docker.NewTagger(dockerRegistry, processCache))
		reporters = append(reporters, docker.NewReporter(dockerRegistry, hostID))
	}

	if *weaveRouterAddr != "" {
		weave, err := overlay.NewWeave(*weaveRouterAddr)
		if err != nil {
			log.Fatalf("failed to start Weave tagger: %v", err)
		}
		taggers = append(taggers, weave)
		reporters = append(reporters, weave)
	}

	log.Printf("listening on %s", *listen)

	quit := make(chan struct{})
	defer close(quit)
	go func() {
		var (
			pubTick = time.Tick(*publishInterval)
			spyTick = time.Tick(*spyInterval)
			r       = report.MakeReport()
		)

		for {
			select {
			case <-pubTick:
				publishTicks.WithLabelValues().Add(1)
				publisher.Publish(r)
				r = report.MakeReport()
//.........这里部分代码省略.........