check for changes and save the config files

doDroplet.go

@@ -109,7 +109,72 @@ func doEvent(e *virtpb.Event) *virtpb.Event {
 		if err != nil {
 			result.Error = fmt.Sprintf("%v", err)
 		}
+		return result
 	}
 
+	if e.Etype == virtpb.EventType_EDIT {
+		log.Println("edit event", e.DropletUuid)
+		result.State = virtpb.Event_DONE
+		if e.Droplet != nil {
+			return updateDroplet(e.Droplet)
+		}
+		log.Println("unknown edit event")
+		result.State = virtpb.Event_FAIL
+		return result
+	}
+
+	log.Println("unknown event", e)
+	result.Etype = e.Etype
+	result.State = virtpb.Event_FAIL
+	return result
+}
+
+func updateDroplet(newd *virtpb.Droplet) *virtpb.Event {
+	var changed bool = false
+	result := new(virtpb.Event)
+
+	if newd == nil {
+		result.Error = "updateDroplet() d == nil"
+		result.State = virtpb.Event_FAIL
+		return result
+	}
+
+	d := me.cluster.FindDropletByUuid(newd.Uuid)
+	if d == nil {
+		result.Error = "updateDroplet() could not find uuid"
+		result.State = virtpb.Event_FAIL
+		return result
+	}
+	log.Println("found droplet to update:", newd.Uuid, newd.Hostname, newd.Cpus, newd.Memory)
+
+	if d.Hostname != newd.Hostname && newd.Hostname != "" {
+		d.Hostname = newd.Hostname
+		changed = true
+	}
+
+	if d.Cpus != newd.Cpus && newd.Cpus > 0 {
+		d.Cpus = newd.Cpus
+		changed = true
+	}
+
+	// arbitrary check. don't make vm's with less than 64 MB of RAM
+	// big enough most things will load with some stdout
+	if d.Memory != newd.Memory && newd.Memory > (64*1024*1024) {
+		d.Memory = newd.Memory
+		changed = true
+	}
+
+	if changed {
+		if err := me.cluster.ConfigSave(); err != nil {
+			log.Info("configsave error", err)
+			result.Error = fmt.Sprintf("%v", err)
+			result.State = virtpb.Event_FAIL
+			return result
+		}
+	} else {
+		log.Println("nothing changed in", newd.Uuid, newd.Hostname)
+	}
+
+	result.State = virtpb.Event_DONE
 	return result
 }