func (this *Discover) discoverClusters(zkzone *zk.ZkZone) {
this.Ui.Output(zkzone.Name())
existingClusters := zkzone.Clusters()
existingCluserPaths := make(map[string]struct{}, len(existingClusters))
for _, path := range existingClusters {
existingCluserPaths[path] = struct{}{}
}
discoveredClusters, err := zkzone.DiscoverClusters("/")
if err != nil {
this.Ui.Error(zkzone.Name() + ": " + err.Error())
return
}
// print each cluster state: new, normal
for _, zkpath := range discoveredClusters {
if _, present := existingCluserPaths[zkpath]; !present {
this.Ui.Output(strings.Repeat(" ", 4) + color.Green("%s +++",
zkpath))
} else {
this.Ui.Output(strings.Repeat(" ", 4) + zkpath)
}
}
// find the offline clusters
for c, path := range existingClusters {
path = strings.TrimSpace(path)
foundOnline := false
for _, p := range discoveredClusters {
p = strings.TrimSpace(p)
if p == path {
foundOnline = true
break
}
}
if !foundOnline {
this.Ui.Output(strings.Repeat(" ", 4) + color.Red("%s: %s ---", c, path))
}
}
}