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,
}
}
func NewRestClientFromConfig(authOptions *AuthenticationOpts) (*RestClient, error) {
addr, port, err := config.GetAnalyzerClientAddr()
if err != nil {
logging.GetLogger().Errorf("Unable to parse analyzer client %s", err.Error())
return nil, err
}
return NewRestClient(addr, port, authOptions), nil
}
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 (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
}
}
}