org.hornetq.api.core.management.DayCounterInfo Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2005-2014 Red Hat, Inc.
 * Red Hat 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.hornetq.api.core.management;

import java.util.Arrays;

import org.hornetq.utils.json.JSONArray;
import org.hornetq.utils.json.JSONException;
import org.hornetq.utils.json.JSONObject;

/**
 * Helper class to create Java Objects from the
 * JSON serialization returned by {@link QueueControl#listMessageCounterHistory()}.
 *
 *  @author Jeff Mesnil
 */
public final class DayCounterInfo
{

   private final String date;

   private final int[] counters;

   // Static --------------------------------------------------------

   public static String toJSON(final DayCounterInfo[] infos) throws JSONException
   {
      JSONObject json = new JSONObject();
      JSONArray counters = new JSONArray();
      for (DayCounterInfo info : infos)
      {
         JSONObject counter = new JSONObject();
         counter.put("date", info.getDate());
         counter.put("counters", Arrays.asList(info.getCounters()));
         counters.put(counter);
      }
      json.put("dayCounters", counters);
      return json.toString();
   }

   /**
    * Returns an array of RoleInfo corresponding to the JSON serialization returned
    * by {@link QueueControl#listMessageCounterHistory()}.
    */
   public static DayCounterInfo[] fromJSON(final String jsonString) throws JSONException
   {
      JSONObject json = new JSONObject(jsonString);
      JSONArray dayCounters = json.getJSONArray("dayCounters");
      DayCounterInfo[] infos = new DayCounterInfo[dayCounters.length()];
      for (int i = 0; i < dayCounters.length(); i++)
      {

         JSONObject counter = (JSONObject)dayCounters.get(i);
         JSONArray hour = (JSONArray)counter.getJSONArray("counters").get(0);
         int[] hourCounters = new int[24];
         for (int j = 0; j < 24; j++)
         {
            hourCounters[j] = hour.getInt(j);
         }
         DayCounterInfo info = new DayCounterInfo(counter.getString("date"), hourCounters);
         infos[i] = info;
      }
      return infos;
   }

   // Constructors --------------------------------------------------

   public DayCounterInfo(final String date, final int[] counters)
   {
      this.date = date;
      this.counters = counters;
   }

   // Public --------------------------------------------------------

   /**
    * Returns the date of the counter.
    */
   public String getDate()
   {
      return date;
   }

   /**
    * Returns a 24-length array corresponding to the number of messages added to the queue
    * for the given hour of the day.
    */
   public int[] getCounters()
   {
      return counters;
   }
}