本文整理汇总了Golang中github.com/contiv/objdb.API.WatchService方法的典型用法代码示例。如果您正苦于以下问题：Golang API.WatchService方法的具体用法？Golang API.WatchService怎么用？Golang API.WatchService使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/contiv/objdb.API的用法示例。
在下文中一共展示了API.WatchService方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: peerDiscoveryLoop
// Main loop to discover peer hosts and masters
func peerDiscoveryLoop(netplugin *plugin.NetPlugin, objClient objdb.API, ctrlIP, vtepIP string) {
// Create channels for watch thread
nodeEventCh := make(chan objdb.WatchServiceEvent, 1)
watchStopCh := make(chan bool, 1)
masterEventCh := make(chan objdb.WatchServiceEvent, 1)
masterWatchStopCh := make(chan bool, 1)
// Start a watch on netmaster
err := objClient.WatchService("netmaster.rpc", masterEventCh, masterWatchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netmaster service. Err: %v", err)
}
// Start a watch on netplugin service
err = objClient.WatchService("netplugin.vtep", nodeEventCh, watchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netplugin service. Err: %v", err)
}
for {
select {
case srvEvent := <-nodeEventCh:
log.Debugf("Received netplugin service watch event: %+v", srvEvent)
// collect the info about the node
nodeInfo := srvEvent.ServiceInfo
// check if its our own info coming back to us
if nodeInfo.HostAddr == vtepIP {
break
}
// Handle based on event type
if srvEvent.EventType == objdb.WatchServiceEventAdd {
log.Infof("Node add event for {%+v}", nodeInfo)
// add the node
err := netplugin.AddPeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: vxlanUDPPort,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
} else if srvEvent.EventType == objdb.WatchServiceEventDel {
log.Infof("Node delete event for {%+v}", nodeInfo)
// remove the node
err := netplugin.DeletePeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: vxlanUDPPort,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
}
case srvEvent := <-masterEventCh:
log.Infof("Received netmaster service watch event: %+v", srvEvent)
// collect the info about the node
nodeInfo := srvEvent.ServiceInfo
// Handle based on event type
if srvEvent.EventType == objdb.WatchServiceEventAdd {
log.Infof("Master add event for {%+v}", nodeInfo)
// Add the master
err := addMaster(netplugin, nodeInfo)
if err != nil {
log.Errorf("Error adding master {%+v}. Err: %v", nodeInfo, err)
}
} else if srvEvent.EventType == objdb.WatchServiceEventDel {
log.Infof("Master delete event for {%+v}", nodeInfo)
// Delete the master
err := deleteMaster(netplugin, nodeInfo)
if err != nil {
log.Errorf("Error deleting master {%+v}. Err: %v", nodeInfo, err)
}
}
}
// Dont process next peer event for another 100ms
time.Sleep(100 * time.Millisecond)
}
}示例2: peerDiscoveryLoop
// Main loop to discover peer hosts and masters
func peerDiscoveryLoop(netplugin *plugin.NetPlugin, objdbClient objdb.API, localIP string) {
// Create channels for watch thread
nodeEventCh := make(chan objdb.WatchServiceEvent, 1)
watchStopCh := make(chan bool, 1)
masterEventCh := make(chan objdb.WatchServiceEvent, 1)
masterWatchStopCh := make(chan bool, 1)
// Start a watch on netmaster
err := objdbClient.WatchService("netmaster", masterEventCh, masterWatchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netmaster service. Err: %v", err)
}
// Start a watch on netplugin service
err = objdbClient.WatchService("netplugin", nodeEventCh, watchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netplugin service. Err: %v", err)
}
for {
select {
case srvEvent := <-nodeEventCh:
log.Infof("Received netplugin service watch event: %+v", srvEvent)
// collect the info about the node
nodeInfo := srvEvent.ServiceInfo
// check if its our own info coming back to us
if nodeInfo.HostAddr == localIP {
break
}
// Handle based on event type
if srvEvent.EventType == objdb.WatchServiceEventAdd {
log.Infof("Node add event for {%+v}", nodeInfo)
// add the node
err := netplugin.AddPeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: ofnet.OFNET_AGENT_VXLAN_PORT,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
// add the node
err = netplugin.AddPeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: ofnet.OFNET_AGENT_VLAN_PORT,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
} else if srvEvent.EventType == objdb.WatchServiceEventDel {
log.Infof("Node delete event for {%+v}", nodeInfo)
// remove the node
err := netplugin.DeletePeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: ofnet.OFNET_AGENT_VXLAN_PORT,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
// remove the node
err = netplugin.DeletePeerHost(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: ofnet.OFNET_AGENT_VLAN_PORT,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", nodeInfo, err)
}
}
case srvEvent := <-masterEventCh:
log.Infof("Received netmaster service watch event: %+v", srvEvent)
// collect the info about the node
nodeInfo := srvEvent.ServiceInfo
// Handle based on event type
if srvEvent.EventType == objdb.WatchServiceEventAdd {
log.Infof("Master add event for {%+v}", nodeInfo)
// Add the master
err := addMaster(netplugin, core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: ofnet.OFNET_MASTER_PORT,
})
if err != nil {
log.Errorf("Error adding master {%+v}. Err: %v", nodeInfo, err)
}
} else if srvEvent.EventType == objdb.WatchServiceEventDel {
log.Infof("Master delete event for {%+v}", nodeInfo)
// Delete the master
err := deleteMaster(netplugin, core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: nodeInfo.Port,
})
//.........这里部分代码省略.........