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 := waitAnalyzer(addr, port, authOptions)
a.WSClient, err = shttp.NewWSAsyncClientFromConfig("skydive-agent", 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.Root)
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()
go a.HTTPServer.ListenAndServe()
if addr != "" {
a.EtcdClient, err = etcd.NewEtcdClientFromConfig()
if err != nil {
logging.GetLogger().Errorf("Unable to start etcd client %s", err.Error())
os.Exit(1)
}
captureApiHandler := &api.CaptureApiHandler{
BasicApiHandler: api.BasicApiHandler{
ResourceHandler: &api.CaptureResourceHandler{},
EtcdKeyAPI: a.EtcdClient.KeysApi,
},
Graph: a.Graph,
}
for {
flowtableUpdate, err := a.EtcdClient.GetInt64("/agent/config/flowtable_update")
if err != nil {
time.Sleep(time.Second)
continue
}
flowtableExpire, err := a.EtcdClient.GetInt64("/agent/config/flowtable_expire")
if err != nil {
time.Sleep(time.Second)
continue
}
updateTime := time.Duration(flowtableUpdate) * time.Second
expireTime := time.Duration(flowtableExpire) * time.Second
a.FlowTableAllocator = flow.NewTableAllocator(updateTime, expireTime)
// expose a flow server through the client connection
flow.NewServer(a.FlowTableAllocator, a.WSClient)
a.FlowProbeBundle = fprobes.NewFlowProbeBundleFromConfig(a.TopologyProbeBundle, a.Graph, a.FlowTableAllocator)
a.FlowProbeBundle.Start()
l, err := fprobes.NewOnDemandProbeListener(a.FlowProbeBundle, a.Graph, captureApiHandler)
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()
break
}
}
}
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 := waitAnalyzer(addr, port, authOptions)
a.WSClient, err = shttp.NewWSAsyncClientFromConfig("skydive-agent", 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, config.GetConfig().GetString("host_id"))
a.WSClient.Connect()
}
a.TopologyProbeBundle, err = NewTopologyProbeBundleFromConfig(a.Graph, a.Root, a.WSClient)
if err != nil {
logging.GetLogger().Errorf("Unable to instantiate topology probes: %s", err.Error())
os.Exit(1)
}
a.TopologyProbeBundle.Start()
go a.HTTPServer.ListenAndServe()
if addr != "" {
a.EtcdClient, err = etcd.NewEtcdClientFromConfig()
if err != nil {
logging.GetLogger().Errorf("Unable to start etcd client %s", err.Error())
os.Exit(1)
}
for {
flowtableUpdate, err := a.EtcdClient.GetInt64("/agent/config/flowtable_update")
if err != nil {
time.Sleep(time.Second)
continue
}
flowtableExpire, err := a.EtcdClient.GetInt64("/agent/config/flowtable_expire")
if err != nil {
time.Sleep(time.Second)
continue
}
updateTime := time.Duration(flowtableUpdate) * time.Second
expireTime := time.Duration(flowtableExpire) * time.Second
a.FlowTableAllocator = flow.NewTableAllocator(updateTime, expireTime)
// expose a flow server through the client connection
flow.NewServer(a.FlowTableAllocator, a.WSClient)
packet_injector.NewServer(a.WSClient, a.Graph)
a.FlowProbeBundle = fprobes.NewFlowProbeBundleFromConfig(a.TopologyProbeBundle, a.Graph, a.FlowTableAllocator)
a.FlowProbeBundle.Start()
l, err := ondemand.NewOnDemandProbeServer(a.FlowProbeBundle, a.Graph, a.WSClient)
if err != nil {
logging.GetLogger().Errorf("Unable to start on-demand flow probe %s", err.Error())
os.Exit(1)
}
a.OnDemandProbeServer = l
a.OnDemandProbeServer.Start()
break
}
}
}
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
}
