Extract method to fetch container processes

main.go

@@ -74,9 +74,24 @@ func getProcesses(dc *client.Client) ([]Process, error) {
 
 	if containers, err := dc.ContainerList(context.Background(), types.ContainerListOptions{All: true}); err == nil {
 		for _, container := range containers {
+			if containerProcesses, err := containerProcesses(dc, container); err == nil {
+				processes = append(processes, containerProcesses...)
+			}
+		}
+	} else {
+		return nil, err
+	}
+
+	return processes, nil
+}
+
+// Get all processes running in current docker container
+func containerProcesses(dc *client.Client, container types.Container) ([]Process, error) {
+	var processes []Process
+
 	tops, err := dc.ContainerTop(context.Background(), container.ID, []string{})
 	if err != nil {
-				continue
+		return nil, err
 	}
 
 	uid := 0
@@ -103,10 +118,6 @@ func getProcesses(dc *client.Client) ([]Process, error) {
 			Command:     process[cmd],
 		})
 	}
-		}
-	} else {
-		return nil, err
-	}
 
 	return processes, nil
 }