func handleContainerStop(netPlugin *plugin.NetPlugin, crt *crt.CRT, opts *cliOpts,
contID string) error {
// If CONTIV_DIND_HOST_GOPATH env variable is set we can assume we are in docker in docker testbed
// Here we need to set the network namespace of the ports created by netplugin back to NS of the docker host
hostGoPath := os.Getenv("CONTIV_DIND_HOST_GOPATH")
if hostGoPath != "" {
osCmd := exec.Command("github.com/contiv/netplugin/scripts/dockerhost/setlocalns.sh")
osCmd.Dir = os.Getenv("GOSRC")
output, err := osCmd.Output()
if err != nil {
log.Errorf("setlocalns failed. Error: %s Output: \n%s\n",
err, output)
return err
}
return err
}
if opts.forceDeleteEp {
log.Infof("deleting operEp for container with uuid %s \n", contID)
epIDs, err := getEpIDByContainerUUID(netPlugin, contID)
if err != nil {
log.Errorf("error obtaining container's epid for uuid %s: %v \n", contID, err)
return err
}
for _, epID := range epIDs {
err = netPlugin.DeleteEndpoint(epID)
if err != nil {
log.Errorf("error deleting an endpoint upon container stop: %v \n", err)
return err
}
}
}
return nil
}
// delete master node
func deleteMaster(netplugin *plugin.NetPlugin, srvInfo core.ServiceInfo) error {
// delete from the db
delete(masterDB, masterKey(srvInfo))
// tel plugin about it
return netplugin.DeleteMaster(srvInfo)
}
func createContainerEpOper(netPlugin *plugin.NetPlugin, contUUID, contName string) error {
epIDs, err := getEpIDByContainerName(netPlugin, contName)
if err != nil {
log.Debugf("unable to find ep for container %s, error %v\n", contName, err)
return err
}
for _, epID := range epIDs {
operEp := &drivers.OvsOperEndpointState{}
operEp.StateDriver = netPlugin.StateDriver
err = operEp.Read(epID)
if core.ErrIfKeyExists(err) != nil {
return err
}
if err == nil {
operEp.ContUUID = contUUID
err = operEp.Write()
if err != nil {
log.Errorf("error updating oper state for ep %s \n", contName)
return err
}
log.Infof("updating container '%s' with id '%s' \n", contName, contUUID)
} else {
err = netPlugin.CreateEndpoint(epID)
if err != nil {
log.Errorf("Endpoint creation failed. Error: %s", err)
return err
}
log.Infof("Endpoint operation create succeeded")
}
}
return err
}
// Add a master node
func addMaster(netplugin *plugin.NetPlugin, srvInfo core.ServiceInfo) error {
// save it in db
masterDB[masterKey(srvInfo)] = &srvInfo
// tell the plugin about the master
return netplugin.AddMaster(srvInfo)
}
func processPeerEvent(netPlugin *plugin.NetPlugin, opts cliOpts, peerID string, isDelete bool) (err error) {
// if this is our own peer info coming back to us, ignore it
if peerID == opts.hostLabel {
return nil
}
// take a lock to ensure we are programming one event at a time.
netPlugin.Lock()
defer func() { netPlugin.Unlock() }()
operStr := ""
if isDelete {
err = netPlugin.DeletePeerHost(peerID)
operStr = "delete"
} else {
err = netPlugin.CreatePeerHost(peerID)
operStr = "create"
}
if err != nil {
log.Errorf("PeerHost operation %s failed. Error: %s", operStr, err)
} else {
log.Infof("PeerHost operation %s succeeded", operStr)
}
return
}
func processNetEvent(netPlugin *plugin.NetPlugin, netID string,
isDelete bool) (err error) {
// take a lock to ensure we are programming one event at a time.
// Also network create events need to be processed before endpoint creates
// and reverse shall happen for deletes. That order is ensured by netmaster,
// so we don't need to worry about that here
netPlugin.Lock()
defer func() { netPlugin.Unlock() }()
operStr := ""
if isDelete {
err = netPlugin.DeleteNetwork(netID)
operStr = "delete"
} else {
err = netPlugin.CreateNetwork(netID)
operStr = "create"
}
if err != nil {
log.Errorf("Network operation %s failed. Error: %s", operStr, err)
} else {
log.Infof("Network operation %s succeeded", operStr)
}
return
}
func processPeerEvent(netPlugin *plugin.NetPlugin, opts cliOpts,
peerInfo *drivers.PeerHostState, isDelete bool) (err error) {
// if this is our own peer info coming back to us, ignore it
if peerInfo.ID == opts.hostLabel {
return nil
}
nodeInfo := core.ServiceInfo{
HostAddr: peerInfo.HostAddr,
Port: 0,
}
// take a lock to ensure we are programming one event at a time.
netPlugin.Lock()
defer func() { netPlugin.Unlock() }()
operStr := ""
if isDelete {
err = netPlugin.DeletePeerHost(nodeInfo)
operStr = "delete"
} else {
err = netPlugin.AddPeerHost(nodeInfo)
operStr = "create"
}
if err != nil {
log.Errorf("PeerHost operation %s failed. Error: %s", operStr, err)
} else {
log.Infof("PeerHost operation %s succeeded", operStr)
}
return
}
// Main loop to discover peer hosts and masters
func peerDiscoveryLoop(netplugin *plugin.NetPlugin, objdbClient objdb.ObjdbApi) {
// 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)
// Get the local address
localIP, err := objdbClient.GetLocalAddr()
if err != nil {
log.Fatalf("Error getting locla IP address. Err: %v", err)
}
// Start a watch on netplugin service so that we dont miss any
err = objdbClient.WatchService("netplugin", nodeEventCh, watchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netplugin service. Err: %v", err)
}
// Start a watch on netmaster too
err = objdbClient.WatchService("netmaster", masterEventCh, masterWatchStopCh)
if err != nil {
log.Fatalf("Could not start a watch on netmaster service. Err: %v", err)
}
// Get a list of all existing netplugin nodes
nodeList, err := objdbClient.GetService("netplugin")
if err != nil {
log.Errorf("Error getting node list from objdb. Err: %v", err)
}
log.Infof("Got netplugin service list: %+v", nodeList)
// walk each node and add it as a PeerHost
for _, node := range nodeList {
// Ignore if its our own info
if node.HostAddr == localIP {
continue
}
// add the node
err := netplugin.AddPeerHost(core.ServiceInfo{
HostAddr: node.HostAddr,
Port: ofnet.OFNET_AGENT_PORT,
})
if err != nil {
log.Errorf("Error adding node {%+v}. Err: %v", node, err)
}
}
// Get a list of all existing netmasters
masterList, err := objdbClient.GetService("netmaster")
if err != nil {
log.Errorf("Error getting master list from objdb. Err: %v", err)
}
log.Infof("Got netmaster service list: %+v", masterList)
// Walk each master and add it
for _, master := range masterList {
// Add the master
err := netplugin.AddMaster(core.ServiceInfo{
HostAddr: master.HostAddr,
Port: ofnet.OFNET_MASTER_PORT,
})
if err != nil {
log.Errorf("Error adding master {%+v}. Err: %v", master, 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 on 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_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_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 := netplugin.AddMaster(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 := netplugin.DeleteMaster(core.ServiceInfo{
HostAddr: nodeInfo.HostAddr,
Port: nodeInfo.Port,
})
if err != nil {
log.Errorf("Error deletin master {%+v}. Err: %v", nodeInfo, err)
}
}
}
}
}
func processEpEvent(netPlugin *plugin.NetPlugin, crt *crt.CRT, opts cliOpts,
epID string, isDelete bool) (err error) {
// take a lock to ensure we are programming one event at a time.
// Also network create events need to be processed before endpoint creates
// and reverse shall happen for deletes. That order is ensured by netmaster,
// so we don't need to worry about that here
netPlugin.Lock()
defer func() { netPlugin.Unlock() }()
homingHost := ""
vtepIP := ""
if !isDelete {
epCfg := &drivers.OvsCfgEndpointState{}
epCfg.StateDriver = netPlugin.StateDriver
err = epCfg.Read(epID)
if err != nil {
log.Errorf("Failed to read config for ep '%s' \n", epID)
return
}
homingHost = epCfg.HomingHost
vtepIP = epCfg.VtepIP
} else {
epOper := &drivers.OvsOperEndpointState{}
epOper.StateDriver = netPlugin.StateDriver
err = epOper.Read(epID)
if err != nil {
log.Errorf("Failed to read oper for ep %s, err '%s' \n", epID, err)
return
}
homingHost = epOper.HomingHost
vtepIP = epOper.VtepIP
}
if skipHost(vtepIP, homingHost, opts.hostLabel) {
log.Infof("skipping mismatching host for ep %s. EP's host %s (my host: %s)",
epID, homingHost, opts.hostLabel)
return
}
// read the context before to be compared with what changed after
contEpContext, err := getEndpointContainerContext(
netPlugin.StateDriver, epID)
if err != nil {
log.Errorf("Failed to obtain the container context for ep '%s' \n",
epID)
return
}
log.Debugf("read endpoint context: %s \n", contEpContext)
operStr := ""
if isDelete {
err = netPlugin.DeleteEndpoint(epID)
operStr = "delete"
} else {
err = netPlugin.CreateEndpoint(epID)
operStr = "create"
}
if err != nil {
log.Errorf("Endpoint operation %s failed. Error: %s",
operStr, err)
return
}
log.Infof("Endpoint operation %s succeeded", operStr)
// attach or detach an endpoint to a container
if isDelete || contAttachPointDeleted(contEpContext) {
err = crt.ContainerIf.DetachEndpoint(contEpContext)
if err != nil {
log.Errorf("Endpoint detach container '%s' from ep '%s' failed . "+
"Error: %s", contEpContext.CurrContName, epID, err)
} else {
log.Infof("Endpoint detach container '%s' from ep '%s' succeeded",
contEpContext.CurrContName, epID)
}
}
if !isDelete && contAttachPointAdded(contEpContext) {
// re-read post ep updated state
newContEpContext, err1 := getEndpointContainerContext(
netPlugin.StateDriver, epID)
if err1 != nil {
log.Errorf("Failed to obtain the container context for ep '%s' \n", epID)
return
}
contEpContext.InterfaceID = newContEpContext.InterfaceID
contEpContext.IPAddress = newContEpContext.IPAddress
contEpContext.SubnetLen = newContEpContext.SubnetLen
err = crt.ContainerIf.AttachEndpoint(contEpContext)
if err != nil {
log.Errorf("Endpoint attach container '%s' to ep '%s' failed . "+
"Error: %s", contEpContext.NewContName, epID, err)
} else {
log.Infof("Endpoint attach container '%s' to ep '%s' succeeded",
contEpContext.NewContName, epID)
}
contID := crt.ContainerIf.GetContainerID(contEpContext.NewContName)
if contID != "" {
}
}
return
}