func watchPodClusters(client consulutil.ConsulClient) {
logger := &logging.DefaultLogger
logger.Infoln("Beginning pod cluster watch")
pcStore := pcstore.NewConsul(client, 0, logger)
quitCh := make(chan struct{})
go func() {
signalCh := make(chan os.Signal, 2)
signal.Notify(signalCh, syscall.SIGTERM, os.Interrupt)
received := <-signalCh
logger.Warnf("Received %v, shutting down", received)
close(quitCh)
}()
if err := pcStore.WatchAndSync(&printSyncer{logger}, quitCh); err != nil {
log.Fatalf("error watching pod cluster: %v", err)
}
}
func main() {
cmd, consulOpts, labeler := flags.ParseWithConsulOptions()
client := kp.NewConsulClient(consulOpts)
kv := kp.NewConsulStore(client)
logger := logging.NewLogger(logrus.Fields{})
pcstore := pcstore.NewConsul(client, labeler, labels.NewConsulApplicator(client, 0), &logger)
session, _, err := kv.NewSession(fmt.Sprintf("pcctl-%s", currentUserName()), nil)
if err != nil {
log.Fatalf("Could not create session: %s", err)
}
switch cmd {
case cmdCreateText:
az := fields.AvailabilityZone(*createAZ)
cn := fields.ClusterName(*createName)
podID := types.PodID(*createPodID)
selector := selectorFrom(az, cn, podID)
pccontrol := control.NewPodCluster(az, cn, podID, pcstore, selector, session)
annotations := *createAnnotations
var parsedAnnotations map[string]interface{}
err := json.Unmarshal([]byte(annotations), &parsedAnnotations)
if err != nil {
log.Fatalf("could not parse json: %v", err)
}
_, err = pccontrol.Create(parsedAnnotations)
if err != nil {
log.Fatalf("err: %v", err)
}
case cmdGetText:
az := fields.AvailabilityZone(*getAZ)
cn := fields.ClusterName(*getName)
podID := types.PodID(*getPodID)
pcID := fields.ID(*getID)
var pccontrol *control.PodCluster
if pcID != "" {
pccontrol = control.NewPodClusterFromID(pcID, session, pcstore)
} else if az != "" && cn != "" && podID != "" {
selector := selectorFrom(az, cn, podID)
pccontrol = control.NewPodCluster(az, cn, podID, pcstore, selector, session)
} else {
log.Fatalf("Expected one of: pcID or (pod,az,name)")
}
pc, err := pccontrol.Get()
if err != nil {
log.Fatalf("Caught error while fetching pod cluster: %v", err)
}
bytes, err := json.Marshal(pc)
if err != nil {
logger.WithError(err).Fatalln("Unable to marshal PC as JSON")
}
fmt.Printf("%s", bytes)
case cmdDeleteText:
az := fields.AvailabilityZone(*deleteAZ)
cn := fields.ClusterName(*deleteName)
podID := types.PodID(*deletePodID)
pcID := fields.ID(*deleteID)
var pccontrol *control.PodCluster
if pcID != "" {
pccontrol = control.NewPodClusterFromID(pcID, session, pcstore)
} else if az != "" && cn != "" && podID != "" {
selector := selectorFrom(az, cn, podID)
pccontrol = control.NewPodCluster(az, cn, podID, pcstore, selector, session)
} else {
log.Fatalf("Expected one of: pcID or (pod,az,name)")
}
errors := pccontrol.Delete()
if len(errors) >= 1 {
for _, err := range errors {
_, _ = os.Stderr.Write([]byte(fmt.Sprintf("Failed to delete one pod cluster matching arguments. Error:\n %s\n", err.Error())))
}
os.Exit(1)
}
case cmdUpdateText:
az := fields.AvailabilityZone(*updateAZ)
cn := fields.ClusterName(*updateName)
podID := types.PodID(*updatePodID)
pcID := fields.ID(*updateID)
var pccontrol *control.PodCluster
if pcID != "" {
pccontrol = control.NewPodClusterFromID(pcID, session, pcstore)
} else if az != "" && cn != "" && podID != "" {
selector := selectorFrom(az, cn, podID)
pccontrol = control.NewPodCluster(az, cn, podID, pcstore, selector, session)
} else {
log.Fatalf("Expected one of: pcID or (pod,az,name)")
}
var annotations fields.Annotations
err := json.Unmarshal([]byte(*updateAnnotations), &annotations)
if err != nil {
_, _ = os.Stderr.Write([]byte(fmt.Sprintf("Annotations are invalid JSON. Err follows:\n%v", err)))
os.Exit(1)
}
pc, err := pccontrol.Update(annotations)
if err != nil {
log.Fatalf("Error during PodCluster update: %v\n%v", err, pc)
os.Exit(1)
}
bytes, err := json.Marshal(pc)
if err != nil {
log.Fatalf("Update succeeded, but error during displaying PC: %v\n%+v", err, pc)
os.Exit(1)
}
fmt.Printf("%s", bytes)
case cmdListText:
pcs, err := pcstore.List()
if err != nil {
_, _ = os.Stderr.Write([]byte(fmt.Sprintf("Could not list pcs. Err follows:\n%v", err)))
os.Exit(1)
}
bytes, err := json.Marshal(pcs)
if err != nil {
_, _ = os.Stderr.Write([]byte(fmt.Sprintf("Could not marshal pc list. Err follows:\n%v", err)))
os.Exit(1)
}
fmt.Printf("%s", bytes)
default:
log.Fatalf("Unrecognized command %v", cmd)
}
}