Esempio n. 1
0
func NewPcapProbesHandler(tb *probes.TopologyProbeBundle, g *graph.Graph, p *mappings.FlowMappingPipeline, a *analyzer.Client) *PcapProbesHandler {
	handler := &PcapProbesHandler{
		graph:               g,
		analyzerClient:      a,
		flowMappingPipeline: p,
		flowTable:           flow.NewTable(),
		probes:              make(map[string]*PcapProbe),
	}
	return handler
}
Esempio n. 2
0
func (sfa *SFlowAgent) start() error {
	addr := net.UDPAddr{
		Port: sfa.Port,
		IP:   net.ParseIP(sfa.Addr),
	}
	conn, err := net.ListenUDP("udp", &addr)
	if err != nil {
		logging.GetLogger().Errorf("Unable to listen on port %d: %s", sfa.Port, err.Error())
		return err
	}
	defer conn.Close()
	conn.SetDeadline(time.Now().Add(1 * time.Second))

	sfa.wg.Add(1)
	defer sfa.wg.Done()

	sfa.running.Store(true)

	sfa.flowTable = flow.NewTable()
	defer sfa.flowTable.UnregisterAll()

	cfgFlowtable_expire := config.GetConfig().GetInt("agent.flowtable_expire")
	sfa.flowTable.RegisterExpire(sfa.asyncFlowPipeline, time.Duration(cfgFlowtable_expire)*time.Second)

	cfgFlowtable_update := config.GetConfig().GetInt("agent.flowtable_update")
	sfa.flowTable.RegisterUpdated(sfa.asyncFlowPipeline, time.Duration(cfgFlowtable_update)*time.Second)

	for sfa.running.Load() == true {
		select {
		case now := <-sfa.flowTable.GetExpireTicker():
			sfa.flowTable.Expire(now)
		case now := <-sfa.flowTable.GetUpdatedTicker():
			sfa.flowTable.Updated(now)
		case <-sfa.flush:
			sfa.flowTable.ExpireNow()
			sfa.flushDone <- true
		default:
			sfa.feedFlowTable(conn)
		}
	}

	return nil
}
Esempio n. 3
0
func NewServerFromConfig() (*Server, error) {
	embedEtcd := config.GetConfig().GetBool("etcd.embedded")

	backend, err := graph.BackendFromConfig()
	if err != nil {
		return nil, err
	}

	g, err := graph.NewGraph(backend)
	if err != nil {
		return nil, err
	}

	httpServer, err := shttp.NewServerFromConfig("analyzer")
	if err != nil {
		return nil, err
	}

	wsServer := shttp.NewWSServerFromConfig(httpServer, "/ws")

	api.RegisterTopologyApi("analyzer", g, httpServer)

	var etcdServer *etcd.EmbeddedEtcd
	if embedEtcd {
		if etcdServer, err = etcd.NewEmbeddedEtcdFromConfig(); err != nil {
			return nil, err
		}
	}

	etcdClient, err := etcd.NewEtcdClientFromConfig()
	if err != nil {
		return nil, err
	}

	apiServer, err := api.NewApi(httpServer, etcdClient.KeysApi)
	if err != nil {
		return nil, err
	}

	captureHandler := &api.BasicApiHandler{
		ResourceHandler: &api.CaptureHandler{},
		EtcdKeyAPI:      etcdClient.KeysApi,
	}
	err = apiServer.RegisterApiHandler(captureHandler)
	if err != nil {
		return nil, err
	}

	alertHandler := &api.BasicApiHandler{
		ResourceHandler: &api.AlertHandler{},
		EtcdKeyAPI:      etcdClient.KeysApi,
	}
	err = apiServer.RegisterApiHandler(alertHandler)
	if err != nil {
		return nil, err
	}

	alertManager := alert.NewAlertManager(g, alertHandler)

	aserver := alert.NewServer(alertManager, wsServer)
	gserver := graph.NewServer(g, wsServer)

	gfe := mappings.NewGraphFlowEnhancer(g)
	ofe := mappings.NewOvsFlowEnhancer(g)

	pipeline := mappings.NewFlowMappingPipeline(gfe, ofe)

	flowtable := flow.NewTable()

	server := &Server{
		HTTPServer:          httpServer,
		WSServer:            wsServer,
		GraphServer:         gserver,
		AlertServer:         aserver,
		FlowMappingPipeline: pipeline,
		FlowTable:           flowtable,
		EmbeddedEtcd:        etcdServer,
		EtcdClient:          etcdClient,
	}
	server.SetStorageFromConfig()

	api.RegisterFlowApi("analyzer", flowtable, server.Storage, httpServer)

	cfgFlowtable_expire := config.GetConfig().GetInt("analyzer.flowtable_expire")
	flowtable.RegisterExpire(server.flowExpireUpdate, time.Duration(cfgFlowtable_expire)*time.Second)
	cfgFlowtable_update := config.GetConfig().GetInt("analyzer.flowtable_update")
	flowtable.RegisterUpdated(server.flowExpireUpdate, time.Duration(cfgFlowtable_update)*time.Second)

	return server, nil
}