//  Licensed to the Apache Software Foundation (ASF) under one
//  or more contributor license agreements.  See the NOTICE file
//  distributed with this work for additional information
//  regarding copyright ownership.  The ASF licenses this file
//  to you under the Apache License, Version 2.0 (the
//  "License"); you may not use this file except in compliance
//  with the License.  You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing,
//  software distributed under the License is distributed on an
//  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
//  KIND, either express or implied.  See the License for the
//  specific language governing permissions and limitations
//  under the License.

syntax = "proto2";
package heron.proto.system;

option java_package = "org.apache.heron.proto.system";
option java_outer_classname = "Common";

enum StatusCode {
  OK = 1;
  NOTOK = 2; //generic not ok message

  // These are messages that are seen by the external applications
  INVALID_TOPOLOGY_NAME = 100;
  TOPOLOGY_ALREADY_ACTIVE = 101;
  TOPOLOGY_ALREADY_DEACTIVE = 102;
  NOT_YET_IMPLEMENTED = 103;

  // Internal errors start at 1000
  INVALID_STMGR = 1000;
  STMGR_DIDNT_REGISTER = 1001;
  DUPLICATE_STRMGR = 1002;

  // State specific errors
  PATH_DOES_NOT_EXIST = 2000;
  PATH_ALREADY_EXISTS = 2001;
  TMASTERLOCATION_ALREADY_EXISTS = 2002;
  STATE_CORRUPTED = 2003;
  STATE_READ_ERROR = 2004;
  STATE_WRITE_ERROR = 2005;
  METRICSCACHELOCATION_ALREADY_EXISTS = 2006;
}

message Status {
  required StatusCode status = 1;
  optional string message = 2;
}