Use ProcessGet instead of ProcessList for fetch a single process

cluster/node/core.go

@@ -423,6 +423,18 @@ func (n *Core) ProcessValidateConfig(config *app.Config) error {
 	return client.ProcessValidateConfig(config)
 }
 
+func (n *Core) ProcessGet(id app.ProcessID, filter []string) (api.Process, error) {
+	n.lock.RLock()
+	client := n.client
+	n.lock.RUnlock()
+
+	if client == nil {
+		return api.Process{}, ErrNoPeer
+	}
+
+	return client.Process(id, filter)
+}
+
 func (n *Core) ProcessList(options client.ProcessListOptions) ([]api.Process, error) {
 	n.lock.RLock()
 	client := n.client

cluster/node/manager.go

@@ -555,20 +555,12 @@ func (p *Manager) ProcessGet(nodeid string, id app.ProcessID, filter []string) (
 		return api.Process{}, err
 	}
 
-	list, err := node.Core().ProcessList(client.ProcessListOptions{
+	process, err := node.Core().ProcessGet(id, filter)
-		ID:     []string{id.ID},
-		Filter: filter,
-		Domain: id.Domain,
-	})
 	if err != nil {
 		return api.Process{}, err
 	}
 
-	if len(list) == 0 {
+	return process, nil
-		return api.Process{}, fmt.Errorf("process not found")
-	}
-
-	return list[0], nil
 }
 
 func (p *Manager) ProcessAdd(nodeid string, config *app.Config, metadata map[string]interface{}) error {