Create new databases and change owners of existing ones during sync. (#153)

* Create new databases and change owners of existing ones during sync.

pkg/cluster/resources.go

@@ -557,3 +557,27 @@ func (c *Cluster) GetStatefulSet() *v1beta1.StatefulSet {
 func (c *Cluster) GetPodDisruptionBudget() *policybeta1.PodDisruptionBudget {
 	return c.PodDisruptionBudget
 }
+
+func (c *Cluster) createDatabases() error {
+	c.setProcessName("creating databases")
+
+	if len(c.Spec.Databases) == 0 {
+		return nil
+	}
+
+	if err := c.initDbConn(); err != nil {
+		return fmt.Errorf("could not init database connection")
+	}
+	defer func() {
+		if err := c.closeDbConn(); err != nil {
+			c.logger.Errorf("could not close database connection: %v", err)
+		}
+	}()
+
+	for datname, owner := range c.Spec.Databases {
+		if err := c.executeCreateDatabase(datname, owner); err != nil {
+			return err
+		}
+	}
+	return nil
+}