Sync clusters states

* move statefulset creation from cluster spec to the separate function
* sync cluster state with desired state;
* move out from arrays for cluster resources;
* recreate pods instead of deleting them in case of statefulset change
* check for master while creating cluster/updating pods
* simplify retryutil
* list pvc while listing resources
* name kubernetes resources with capital letter
* do rolling update in case of env variables change

pkg/controller/pod.go

@@ -117,15 +117,15 @@ func (c *Controller) podDelete(obj interface{}) {
 }
 
 func (c *Controller) podEventsDispatcher(stopCh <-chan struct{}) {
-	c.logger.Infof("Watching all pod events")
+	c.logger.Infof("Watching all Pod events")
 	for {
 		select {
 		case event := <-c.podCh:
 			if subscriber, ok := c.clusters[event.ClusterName]; ok {
-				c.logger.Debugf("Sending %s event of pod '%s' to the '%s' cluster channel", event.EventType, event.PodName, event.ClusterName)
+				c.logger.Debugf("Sending %s event of Pod '%s' to the '%s' cluster channel", event.EventType, event.PodName, event.ClusterName)
 				go subscriber.ReceivePodEvent(event)
 			} else {
-				c.logger.Debugf("Skipping pods unrelated to clusters: %s", event.PodName)
+				c.logger.Debugf("Skipping Pods unrelated to clusters: %s", event.PodName)
 			}
 		case <-stopCh:
 			return

pkg/controller/postgresql.go

@@ -53,7 +53,9 @@ func (c *Controller) clusterListFunc(options api.ListOptions) (runtime.Object, e
 		c.clusters[clusterName] = cl
 		cl.LoadResources()
 		go cl.Run(stopCh)
+
 		cl.ListResources()
+		cl.SyncCluster()
 	}
 	if len(c.clusters) > 0 {
 		c.logger.Infof("There are %d clusters currently running", len(c.clusters))

pkg/controller/util.go

@@ -24,7 +24,7 @@ func (c *Controller) getOAuthToken() (string, error) {
 	credentialsSecret, err := c.config.KubeClient.Secrets(api.NamespaceDefault).Get(constants.OAuthTokenSecretName)
 
 	if err != nil {
-		return "", fmt.Errorf("Can't get credentials secret: %s", err)
+		return "", fmt.Errorf("Can't get credentials Secret: %s", err)
 	}
 	data := credentialsSecret.Data