ambari/ambari-web/app/models/host_component.js

/**
 * 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.
 */

var App = require('app');

App.HostComponent = DS.Model.extend({
  workStatus: DS.attr('string'),
  componentName: DS.attr('string'),
  host: DS.belongsTo('App.Host'),
  service: DS.belongsTo('App.Service'),
  isClient:function () {
    if(['PIG', 'SQOOP', 'HCAT'].contains(this.get('componentName'))){
      return true;
    }

    return Boolean(this.get('componentName').match(/_client/gi));
  }.property('componentName'),
  isRunning: function(){
    return (this.get('workStatus') == 'STARTED' || this.get('workStatus') == 'STARTING');
  }.property('workStatus'),
  displayName: function () {
    return App.format.role(this.get('componentName'));
  }.property('componentName'),
  isMaster: function () {
    switch (this.get('componentName')) {
      case 'NAMENODE':
      case 'SECONDARY_NAMENODE':
      case 'SNAMENODE':
      case 'JOBTRACKER':
      case 'ZOOKEEPER_SERVER':
      case 'HIVE_SERVER':
      case 'HIVE_METASTORE':
      case 'MYSQL_SERVER':
      case 'HBASE_MASTER':
      case 'NAGIOS_SERVER':
      case 'GANGLIA_SERVER':
      case 'OOZIE_SERVER':
      case 'WEBHCAT_SERVER':
        return true;
      default:
        return false;
    }
  }.property('componentName'),
  isSlave: function(){
    switch (this.get('componentName')) {
      case 'DATANODE':
      case 'TASKTRACKER':
      case 'HBASE_REGIONSERVER':
      case 'GANGLIA_MONITOR':
        return true;
      default:
        return false;
    }
  }.property('componentName'),
  /**
   * A host-component is decommissioning when it is in HDFS service's list of
   * decomNodes.
   */
  isDecommissioning: function () {
    var decommissioning = false;
    var hostName = this.get('host.hostName');
    var componentName = this.get('componentName');
    if (componentName == 'DATANODE') {
      var hdfsSvc = App.router.get('mainServiceController.hdfsService');
      if (hdfsSvc) {
        var decomNodes = hdfsSvc.get('decommissionDataNodes');
        var decomNode = decomNodes != null ? decomNodes.findProperty("hostName", hostName) : null;
        decommissioning = decomNode != null;
      }
    }
    return decommissioning;
  }.property('componentName', 'host.hostName', 'App.router.mainServiceController.hdfsService.decommissionDataNodes.@each.hostName')
});

App.HostComponent.FIXTURES = [];

App.HostComponentStatus = {
  started: "STARTED",
  starting: "STARTING",
  stopped: "INSTALLED",
  stopping: "STOPPING",
  stop_failed: "STOP_FAILED",
  start_failed: "START_FAILED",
  install_failed: "INSTALL_FAILED",

  getKeyName:function(value){
    switch(value){
      case this.started:
        return 'started';
      case this.starting:
        return 'starting';
      case this.stopped:
        return 'installed';
      case this.stopping:
        return 'stopping';
      case this.stop_failed:
        return 'stop_failed';
      case this.start_failed:
        return 'start_failed';
      case this.install_failed:
        return 'install_failed';
    }
    return 'none';
  }
};