hadoop SchedulerPageUtil 源码

haddop SchedulerPageUtil 代码

文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/webapp/SchedulerPageUtil.java

/**
* 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.
*/

package org.apache.hadoop.yarn.server.resourcemanager.webapp;

import org.apache.hadoop.yarn.webapp.view.HtmlBlock;

public class SchedulerPageUtil {

  static class QueueBlockUtil extends HtmlBlock {

    private void reopenQueue(Block html) {
      html.
          script().$type("text/javascript").
          __("function reopenQueryNodes() {",
            "  var currentParam = decodeURIComponent(window.location.href)"
                + ".split('?');",
            "  var tmpCurrentParam = currentParam;",
            "  var queryQueuesString = '';",
            "  if (tmpCurrentParam.length > 1) {",
            "    // openQueues=q1#q2&param1=value1&param2=value2",
            "    tmpCurrentParam = tmpCurrentParam[1];",
            "    if (tmpCurrentParam.indexOf('openQueues=') != -1 ) {",
            "      tmpCurrentParam = tmpCurrentParam.split('openQueues=')[1].split('&')[0];",
            "      queryQueuesString = tmpCurrentParam;",
            "    }",
            "  }",
            "  if (queryQueuesString != '') {",
            "    queueArray = queryQueuesString.split('#');",
            "    $('#cs .q').each(function() {",
            "      var name = $(this).html();",
            "      if (name != 'root' && $.inArray(name, queueArray) != -1) {",
            "        $(this).closest('li').removeClass('jstree-closed').addClass('jstree-open'); ",
            "      }",
            "    });",
            "  }",
            "  $('#cs').bind( {",
            "                  'open_node.jstree' :function(e, data) { storeExpandedQueue(e, data); },",
            "                  'close_node.jstree':function(e, data) { storeExpandedQueue(e, data); }",
            "  });",
            "}").__();
    }

    private void storeExpandedQueue (Block html) {
      html.
          script().$type("text/javascript").
          __("function storeExpandedQueue(e, data) {",
            "  var OPEN_QUEUES = 'openQueues';",
            "  var ACTION_OPEN = 'open';",
            "  var ACTION_CLOSED = 'closed';",
            "  var $li = $(data.args[0]);",
            "  var action = ACTION_CLOSED;  //closed or open",
            "  var queueName = ''",
            "  if ($li.hasClass('jstree-open')) {",
            "      action=ACTION_OPEN;",
            "  }",
            "  queueName = $li.find('.q').html();",
            "  // http://localhost:8088/cluster/scheduler?openQueues=q1#q2&param1=value1&param2=value2 ",
            "  //   ==> [http://localhost:8088/cluster/scheduler , openQueues=q1#q2&param1=value1&param2=value2]",
            "  var currentParam = window.location.href.split('?');",
            "  var tmpCurrentParam = currentParam;",
            "  var queryString = '';",
            "  if (tmpCurrentParam.length > 1) {",
            "    // openQueues=q1#q2&param1=value1&param2=value2",
            "    tmpCurrentParam = tmpCurrentParam[1];",
            "    currentParam = tmpCurrentParam;",
            "    tmpCurrentParam = tmpCurrentParam.split('&');",
            "    var len = tmpCurrentParam.length;",
            "    var paramExist = false;",
            "    if (len > 1) {    // Currently no query param are present but in future if any are added for that handling it now",
            "      queryString = '';",
            "      for (var i = 0 ; i < len ; i++) {  // searching for param openQueues",
            "        if (tmpCurrentParam[i].substr(0,11) == OPEN_QUEUES + '=') {",
            "          if (action == ACTION_OPEN) {",
            "            tmpCurrentParam[i] = addQueueName(tmpCurrentParam[i],queueName);",
            "          }",
            "          else if (action == ACTION_CLOSED) {",
            "            tmpCurrentParam[i] = removeQueueName(tmpCurrentParam[i] , queueName);",
            "          }",
            "          paramExist = true;",
            "        }",
            "        if (i > 0) {",
            "          queryString += '&';",
            "        }",
            "        queryString += tmpCurrentParam[i];",
            "      }",
            "      // If in existing query string OPEN_QUEUES param is not present",
            "      if (action == ACTION_OPEN && !paramExist) {",
            "        queryString = currentParam + '&' + OPEN_QUEUES + '=' + queueName;",
            "      }",
            "    } ",
            "    // Only one param is present in current query string",
            "    else {",
            "      tmpCurrentParam=tmpCurrentParam[0];",
            "      // checking if the only param present in query string is OPEN_QUEUES or not and making queryString accordingly",
            "      if (tmpCurrentParam.substr(0,11) == OPEN_QUEUES + '=') {",
            "        if (action == ACTION_OPEN) {",
            "          queryString = addQueueName(tmpCurrentParam,queueName);",
            "        }",
            "        else if (action == ACTION_CLOSED) {",
            "          queryString = removeQueueName(tmpCurrentParam , queueName);",
            "        }",
            "      }",
            "      else {",
            "        if (action == ACTION_OPEN) {",
            "          queryString = tmpCurrentParam + '&' + OPEN_QUEUES + '=' + queueName;",
            "        }",
            "      }",
            "    }",
            "  } else {",
            "    if (action == ACTION_OPEN) {",
            "      tmpCurrentParam = '';",
            "      currentParam = tmpCurrentParam;",
            "      queryString = OPEN_QUEUES+'='+queueName;",
            "    }",
            "  }",
            "  if (queryString != '') {",
            "    queryString = '?' + queryString;",
            "  }",
            "  var url = window.location.protocol + '//' + window.location.host + window.location.pathname + queryString;",
            "  window.history.pushState( { path : url }, '', url);",
            "};",
            "",
            "function removeQueueName(queryString, queueName) {",
            "  queryString = decodeURIComponent(queryString);",
            "  var index = queryString.indexOf(queueName);",
            "  // Finding if queue is present in query param then only remove it",
            "  if (index != -1) {",
            "    // removing openQueues=",
            "    var tmp = queryString.substr(11, queryString.length);",
            "    tmp = tmp.split('#');",
            "    var len = tmp.length;",
            "    var newQueryString = '';",
            "    for (var i = 0 ; i < len ; i++) {",
            "      if (tmp[i] != queueName) {",
            "        if (newQueryString != '') {",
            "          newQueryString += '#';",
            "        }",
            "        newQueryString += tmp[i];",
            "      }",
            "    }",
            "    queryString = newQueryString;",
            "    if (newQueryString != '') {",
            "      queryString = 'openQueues=' + newQueryString;",
            "    }",
            "  }",
            "  return queryString;",
            "}",
            "",
            "function addQueueName(queryString, queueName) {",
            "  queueArray = queryString.split('#');",
            "  if ($.inArray(queueArray, queueName) == -1) {",
            "    queryString = queryString + '#' + queueName;",
            "  }",
            "  return queryString;",
            "}").__();
    }

    @Override protected void render(Block html) {
      reopenQueue(html);
      storeExpandedQueue(html);
    }
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AboutBlock 源码

hadoop AboutPage 源码

hadoop AppAttemptPage 源码

hadoop AppLogAggregationStatusPage 源码

hadoop AppPage 源码

hadoop ApplicationsRequestBuilder 源码

hadoop AppsBlockWithMetrics 源码

hadoop CapacitySchedulerPage 源码

hadoop ColumnHeader 源码

hadoop ContainerPage 源码