Esempio n. 1
0
func NewFlowProbeBundleFromConfig(tb *probes.TopologyProbeBundle, g *graph.Graph, fta *flow.TableAllocator) *FlowProbeBundle {
	list := config.GetConfig().GetStringSlice("agent.flow.probes")

	logging.GetLogger().Infof("Flow probes: %v", list)

	gfe := mappings.NewGraphFlowEnhancer(g)

	var aclient *analyzer.Client

	addr, port, err := config.GetAnalyzerClientAddr()
	if err != nil {
		logging.GetLogger().Errorf("Unable to parse analyzer client: %s", err.Error())
		return nil
	}

	if addr != "" {
		aclient, err = analyzer.NewClient(addr, port)
		if err != nil {
			logging.GetLogger().Errorf("Analyzer client error %s:%d : %s", addr, port, err.Error())
			return nil
		}
	}

	probes := make(map[string]probe.Probe)
	for _, t := range list {
		if _, ok := probes[t]; ok {
			continue
		}

		switch t {
		case "ovssflow":
			o := NewOvsSFlowProbesHandler(tb, g)
			if o != nil {
				ofe := mappings.NewOvsFlowEnhancer(g)
				pipeline := mappings.NewFlowMappingPipeline(gfe, ofe)
				probes[t] = FlowProbe{fpi: o, pipeline: pipeline, client: aclient}
			}
		case "gopacket":
			o := NewGoPacketProbesHandler(g)
			if o != nil {
				pipeline := mappings.NewFlowMappingPipeline(gfe)
				gopacket := FlowProbe{fpi: o, pipeline: pipeline, client: aclient}

				probes["afpacket"] = gopacket
				probes["pcap"] = gopacket
			}
		default:
			logging.GetLogger().Errorf("unknown probe type %s", t)
		}
	}

	p := probe.NewProbeBundle(probes)

	return &FlowProbeBundle{
		ProbeBundle:        *p,
		Graph:              g,
		FlowTableAllocator: fta,
	}
}
Esempio n. 2
0
func NewServerFromConfig() (*Server, error) {
	embedEtcd := config.GetConfig().GetBool("etcd.embedded")

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

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

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

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

	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
	}

	analyzerUpdate := config.GetConfig().GetInt("analyzer.flowtable_update")
	analyzerExpire := config.GetConfig().GetInt("analyzer.flowtable_expire")
	agentRatio := config.GetConfig().GetFloat64("analyzer.flowtable_agent_ratio")
	if agentRatio == 0.0 {
		agentRatio = 0.5
	}

	agentUpdate := int64(float64(analyzerUpdate) * agentRatio)
	agentExpire := int64(float64(analyzerExpire) * agentRatio)

	if err := etcdClient.SetInt64("/agent/config/flowtable_update", agentUpdate); err != nil {
		return nil, err
	}

	if err := etcdClient.SetInt64("/agent/config/flowtable_expire", agentExpire); err != nil {
		return nil, err
	}

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

	captureApiHandler := &api.CaptureApiHandler{
		BasicApiHandler: api.BasicApiHandler{
			ResourceHandler: &api.CaptureResourceHandler{},
			EtcdKeyAPI:      etcdClient.KeysApi,
		},
		Graph: g,
	}
	err = apiServer.RegisterApiHandler(captureApiHandler)
	if err != nil {
		return nil, err
	}

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

	alertManager := alert.NewAlertManager(g, alertApiHandler)

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

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

	pipeline := mappings.NewFlowMappingPipeline(gfe, ofe)

	tableClient := flow.NewTableClient(wsServer)

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

	updateHandler := flow.NewFlowHandler(server.flowExpireUpdate, time.Second*time.Duration(analyzerUpdate))
	expireHandler := flow.NewFlowHandler(server.flowExpireUpdate, time.Second*time.Duration(analyzerExpire))
	flowtable := flow.NewTable(updateHandler, expireHandler)
	server.FlowTable = flowtable

	api.RegisterTopologyApi("analyzer", g, httpServer, tableClient, server.Storage)

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

	return server, nil
}