// HandleEvents handles events
func (ag *Agent) HandleEvents() error {
opts := ag.pluginConfig.Instance
recvErr := make(chan error, 1)
go handleNetworkEvents(ag.netPlugin, opts, recvErr)
go handleBgpEvents(ag.netPlugin, opts, recvErr)
go handleEpgEvents(ag.netPlugin, opts, recvErr)
go handleServiceLBEvents(ag.netPlugin, opts, recvErr)
go handleSvcProviderUpdEvents(ag.netPlugin, opts, recvErr)
go handleGlobalCfgEvents(ag.netPlugin, opts, recvErr)
if ag.pluginConfig.Instance.PluginMode == "docker" {
go ag.monitorDockerEvents(recvErr)
} else if ag.pluginConfig.Instance.PluginMode == "kubernetes" {
// start watching kubernetes events
k8splugin.InitKubServiceWatch(ag.netPlugin)
}
err := <-recvErr
if err != nil {
time.Sleep(1 * time.Second)
log.Errorf("Failure occurred. Error: %s", err)
return err
}
return nil
}
// HandleEvents handles events
func (ag *Agent) HandleEvents() error {
opts := ag.pluginConfig.Instance
recvErr := make(chan error, 1)
go handleNetworkEvents(ag.netPlugin, opts, recvErr)
go handleBgpEvents(ag.netPlugin, opts, recvErr)
go handleEpgEvents(ag.netPlugin, opts, recvErr)
go handleServiceLBEvents(ag.netPlugin, opts, recvErr)
go handleSvcProviderUpdEvents(ag.netPlugin, opts, recvErr)
go handleGlobalCfgEvents(ag.netPlugin, opts, recvErr)
if ag.pluginConfig.Instance.PluginMode == "docker" {
// watch for docker events
docker, _ := dockerclient.NewDockerClient("unix:///var/run/docker.sock", nil)
go docker.StartMonitorEvents(handleDockerEvents, recvErr, ag.netPlugin, recvErr)
} else if ag.pluginConfig.Instance.PluginMode == "kubernetes" {
// start watching kubernetes events
k8splugin.InitKubServiceWatch(ag.netPlugin)
}
err := <-recvErr
if err != nil {
log.Errorf("Failure occured. Error: %s", err)
return err
}
return nil
}
func main() {
var opts cliOpts
var flagSet *flag.FlagSet
defHostLabel, err := os.Hostname()
if err != nil {
log.Fatalf("Failed to fetch hostname. Error: %s", err)
}
// parse rest of the args that require creating state
flagSet = flag.NewFlagSet("netd", flag.ExitOnError)
flagSet.BoolVar(&opts.debug,
"debug",
false,
"Show debugging information generated by netplugin")
flagSet.StringVar(&opts.syslog,
"syslog",
"",
"Log to syslog at proto://ip:port -- use 'kernel' to log via kernel syslog")
flagSet.BoolVar(&opts.jsonLog,
"json-log",
false,
"Format logs as JSON")
flagSet.StringVar(&opts.hostLabel,
"host-label",
defHostLabel,
"label used to identify endpoints homed for this host, default is host name. If -config flag is used then host-label must be specified in the the configuration passed.")
flagSet.StringVar(&opts.pluginMode,
"plugin-mode",
"docker",
"plugin mode docker|kubernetes")
flagSet.StringVar(&opts.cfgFile,
"config",
"",
"plugin configuration. Use '-' to read configuration from stdin")
flagSet.StringVar(&opts.vtepIP,
"vtep-ip",
"",
"My VTEP ip address")
flagSet.StringVar(&opts.ctrlIP,
"ctrl-ip",
"",
"Local ip address to be used for control communication")
flagSet.StringVar(&opts.vlanIntf,
"vlan-if",
"",
"My VTEP ip address")
flagSet.BoolVar(&opts.version,
"version",
false,
"Show version")
flagSet.StringVar(&opts.fwdMode,
"fwd-mode",
"bridge",
"Forwarding Mode")
flagSet.StringVar(&opts.dbURL,
"cluster-store",
"etcd://127.0.0.1:2379",
"state store url")
err = flagSet.Parse(os.Args[1:])
if err != nil {
log.Fatalf("Failed to parse command. Error: %s", err)
}
if opts.version {
fmt.Printf(version.String())
os.Exit(0)
}
// Make sure we are running as root
usr, err := user.Current()
if (err != nil) || (usr.Username != "root") {
log.Fatalf("This process can only be run as root")
}
if opts.debug {
log.SetLevel(log.DebugLevel)
os.Setenv("CONTIV_TRACE", "1")
}
if opts.jsonLog {
log.SetFormatter(&log.JSONFormatter{})
} else {
log.SetFormatter(&log.TextFormatter{FullTimestamp: true, TimestampFormat: time.StampNano})
}
if opts.syslog != "" {
configureSyslog(opts.syslog)
}
if opts.fwdMode != "bridge" && opts.fwdMode != "routing" && opts.fwdMode != "mpls" {
log.Fatalf("Invalid forwarding mode. Allowed modes are bridge,routing ")
}
if flagSet.NFlag() < 1 {
log.Infof("host-label not specified, using default (%s)", opts.hostLabel)
}
// default to using local IP addr
localIP, err := cluster.GetLocalAddr()
if err != nil {
log.Fatalf("Error getting local address. Err: %v", err)
}
if opts.ctrlIP == "" {
opts.ctrlIP = localIP
}
if opts.vtepIP == "" {
opts.vtepIP = opts.ctrlIP
}
// parse store URL
parts := strings.Split(opts.dbURL, "://")
if len(parts) < 2 {
log.Fatalf("Invalid cluster-store-url %s", opts.dbURL)
}
stateStore := parts[0]
netPlugin := &plugin.NetPlugin{}
// initialize the config
pluginConfig := plugin.Config{
Drivers: plugin.Drivers{
Network: "ovs",
State: stateStore,
},
Instance: core.InstanceInfo{
HostLabel: opts.hostLabel,
VtepIP: opts.vtepIP,
VlanIntf: opts.vlanIntf,
RouterIP: opts.routerIP,
FwdMode: opts.fwdMode,
DbURL: opts.dbURL,
},
}
// Initialize service registry plugin
svcPlugin, quitCh, err := svcplugin.NewSvcregPlugin(opts.dbURL, nil)
if err != nil {
log.Fatalf("Error initializing service registry plugin")
}
defer close(quitCh)
// Initialize appropriate plugin
switch opts.pluginMode {
case "docker":
dockplugin.InitDockPlugin(netPlugin, svcPlugin)
case "kubernetes":
k8splugin.InitCNIServer(netPlugin)
default:
log.Fatalf("Unknown plugin mode -- should be docker | kubernetes")
}
// Init the driver plugins..
err = netPlugin.Init(pluginConfig)
if err != nil {
log.Fatalf("Failed to initialize the plugin. Error: %s", err)
}
// Process all current state
processCurrentState(netPlugin, opts)
// Initialize clustering
cluster.Init(netPlugin, opts.ctrlIP, opts.vtepIP, opts.dbURL)
if opts.pluginMode == "kubernetes" {
k8splugin.InitKubServiceWatch(netPlugin)
}
if err := handleEvents(netPlugin, opts); err != nil {
os.Exit(1)
}
}