func (a *Agent) Start() {
var err error
go a.WSServer.ListenAndServe()
addr, port, err := config.GetAnalyzerClientAddr()
if err != nil {
logging.GetLogger().Errorf("Unable to parse analyzer client %s", err.Error())
os.Exit(1)
}
if addr != "" {
authOptions := &shttp.AuthenticationOpts{
Username: config.GetConfig().GetString("agent.analyzer_username"),
Password: config.GetConfig().GetString("agent.analyzer_password"),
}
authClient := shttp.NewAuthenticationClient(addr, port, authOptions)
a.WSClient, err = shttp.NewWSAsyncClient(addr, port, "/ws", authClient)
if err != nil {
logging.GetLogger().Errorf("Unable to instantiate analyzer client %s", err.Error())
os.Exit(1)
}
graph.NewForwarder(a.WSClient, a.Graph)
a.WSClient.Connect()
// send a first reset event to the analyzers
a.Graph.DelSubGraph(a.Root)
}
a.TopologyProbeBundle = tprobes.NewTopologyProbeBundleFromConfig(a.Graph, a.Root)
a.TopologyProbeBundle.Start()
a.FlowProbeBundle = fprobes.NewFlowProbeBundleFromConfig(a.TopologyProbeBundle, a.Graph)
a.FlowProbeBundle.Start()
if addr != "" {
a.EtcdClient, err = etcd.NewEtcdClientFromConfig()
if err != nil {
logging.GetLogger().Errorf("Unable to start etcd client %s", err.Error())
os.Exit(1)
}
captureHandler := &api.BasicApiHandler{
ResourceHandler: &api.CaptureHandler{},
EtcdKeyAPI: a.EtcdClient.KeysApi,
}
l, err := fprobes.NewOnDemandProbeListener(a.FlowProbeBundle, a.Graph, captureHandler)
if err != nil {
logging.GetLogger().Errorf("Unable to start on-demand flow probe %s", err.Error())
os.Exit(1)
}
a.OnDemandProbeListener = l
a.OnDemandProbeListener.Start()
}
go a.HTTPServer.ListenAndServe()
}
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
}