WIP: support multiple namespaces.

This particular commit makes the operator listen on all namespaces
and introduces an optional namespace to the clusters RESET API
endpoints.

pkg/controller/node.go

@@ -80,7 +80,7 @@ func (c *Controller) moveMasterPodsOffNode(node *v1.Node) {
 	opts := metav1.ListOptions{
 		LabelSelector: labels.Set(c.opConfig.ClusterLabels).String(),
 	}
-	podList, err := c.KubeClient.Pods(c.opConfig.Namespace).List(opts)
+	podList, err := c.KubeClient.Pods("").List(opts)
 	if err != nil {
 		c.logger.Errorf("could not fetch list of the pods: %v", err)
 		return

pkg/controller/pod.go

@@ -17,7 +17,7 @@ func (c *Controller) podListFunc(options metav1.ListOptions) (runtime.Object, er
 		TimeoutSeconds:  options.TimeoutSeconds,
 	}
 
-	return c.KubeClient.Pods(c.opConfig.Namespace).List(opts)
+	return c.KubeClient.Pods("").List(opts)
 }
 
 func (c *Controller) podWatchFunc(options metav1.ListOptions) (watch.Interface, error) {
@@ -27,7 +27,7 @@ func (c *Controller) podWatchFunc(options metav1.ListOptions) (watch.Interface,
 		TimeoutSeconds:  options.TimeoutSeconds,
 	}
 
-	return c.KubeClient.Pods(c.opConfig.Namespace).Watch(opts)
+	return c.KubeClient.Pods("").Watch(opts)
 }
 
 func (c *Controller) dispatchPodEvent(clusterName spec.NamespacedName, event spec.PodEvent) {

pkg/controller/postgresql.go

@@ -46,7 +46,6 @@ func (c *Controller) clusterListFunc(options metav1.ListOptions) (runtime.Object
 
 	req := c.KubeClient.CRDREST.
 		Get().
-		Namespace(c.opConfig.Namespace).
 		Resource(constants.CRDResource).
 		VersionedParams(&options, metav1.ParameterCodec)
 
@@ -110,7 +109,6 @@ func (c *Controller) clusterWatchFunc(options metav1.ListOptions) (watch.Interfa
 	options.Watch = true
 	r, err := c.KubeClient.CRDREST.
 		Get().
-		Namespace(c.opConfig.Namespace).
 		Resource(constants.CRDResource).
 		VersionedParams(&options, metav1.ParameterCodec).
 		FieldsSelectorParam(nil).

pkg/controller/status.go

@@ -14,9 +14,12 @@ import (
 )
 
 // ClusterStatus provides status of the cluster
-func (c *Controller) ClusterStatus(team, cluster string) (*spec.ClusterStatus, error) {
+func (c *Controller) ClusterStatus(team, namespace, cluster string) (*spec.ClusterStatus, error) {
+	if namespace == "" {
+		namespace = c.opConfig.Namespace
+	}
 	clusterName := spec.NamespacedName{
-		Namespace: c.opConfig.Namespace,
+		Namespace: namespace,
 		Name:      team + "-" + cluster,
 	}
 
@@ -90,9 +93,12 @@ func (c *Controller) GetStatus() *spec.ControllerStatus {
 }
 
 // ClusterLogs dumps cluster ring logs
-func (c *Controller) ClusterLogs(team, name string) ([]*spec.LogEntry, error) {
+func (c *Controller) ClusterLogs(team, namespace, name string) ([]*spec.LogEntry, error) {
+	if namespace == "" {
+		namespace = c.opConfig.Namespace
+	}
 	clusterName := spec.NamespacedName{
-		Namespace: c.opConfig.Namespace,
+		Namespace: namespace,
 		Name:      team + "-" + name,
 	}
 
@@ -212,9 +218,12 @@ func (c *Controller) WorkerStatus(workerID uint32) (*spec.WorkerStatus, error) {
 }
 
 // ClusterHistory dumps history of cluster changes
-func (c *Controller) ClusterHistory(team, name string) ([]*spec.Diff, error) {
+func (c *Controller) ClusterHistory(team, namespace, name string) ([]*spec.Diff, error) {
+	if namespace == "" {
+		namespace = c.opConfig.Namespace
+	}
 	clusterName := spec.NamespacedName{
-		Namespace: c.opConfig.Namespace,
+		Namespace: namespace,
 		Name:      team + "-" + name,
 	}