LoadBalancerServerStatsImpl


1   /*
2    * The contents of this file are subject to the terms 
3    * of the Common Development and Distribution License 
4    * (the License).  You may not use this file except in
5    * compliance with the License.
6    * 
7    * You can obtain a copy of the license at 
8    * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9    * glassfish/bootstrap/legal/CDDLv1.0.txt.
10   * See the License for the specific language governing 
11   * permissions and limitations under the License.
12   * 
13   * When distributing Covered Code, include this CDDL 
14   * Header Notice in each file and include the License file 
15   * at glassfish/bootstrap/legal/CDDLv1.0.txt.  
16   * If applicable, add the following below the CDDL Header, 
17   * with the fields enclosed by brackets [] replaced by
18   * you own identifying information: 
19   * "Portions Copyrighted [year] [name of copyright owner]"
20   * 
21   * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22   */
23  
24  package com.sun.enterprise.management.monitor.stats;
25  
26  import java.util.Date  ;
27  import java.util.Map  ;
28  import javax.management.j2ee.statistics.Statistic  ;
29  import javax.management.j2ee.statistics.CountStatistic  ;
30  import com.sun.appserv.management.j2ee.statistics.CountStatisticImpl;
31  import com.sun.appserv.management.j2ee.statistics.StringStatistic;
32  import com.sun.appserv.management.j2ee.statistics.StringStatisticImpl;
33  import com.sun.appserv.management.monitor.statistics.LoadBalancerServerStats;
34  import com.sun.enterprise.admin.monitor.stats.lb.ClusterStats;
35  import com.sun.enterprise.admin.monitor.stats.lb.InstanceStats;
36  import com.sun.enterprise.admin.monitor.stats.lb.LoadBalancerStatsInterface;
37  import com.sun.enterprise.server.ApplicationServer;
38  import com.sun.enterprise.server.pluggable.LBFeatureFactory;
39  
40  public final class LoadBalancerServerStatsImpl implements CustomStatsImpl {
41      
42      /** Returns the statistics for a load-balanced server instance
43       * @return an array of {@link Statistic}     
44       */
45      public Statistic  [] getStatistics() {
46          LoadBalancerStatsInterface lbstats = lbff.getLoadBalancerMonitoringStats(lbConfigName,lbName);
47          Statistic  [] statArr1 = new Statistic  [3];
48          StringStatistic stat11 = new StringStatisticImpl("Health", "Instance Health", "NONE", 0, 0, "");
49          CountStatistic   stat21 = new CountStatisticImpl("NumberOfActiveRequests", "Number Of Active Requests", "NONE", 0, 0, 0);
50          CountStatistic   stat31 = new CountStatisticImpl("NumberOfTotalRequests", "Number Of Total Requests", "NONE", 0, 0, 0);
51          statArr1[0]=stat11;
52          statArr1[1]=stat21;
53          statArr1[2]=stat31;
54          if(lbstats == null)
55              return statArr1;
56          ClusterStats [] cstats = lbstats.getClusterStats();
57          for(ClusterStats cstat :cstats){
58              for(InstanceStats istat : cstat.getInstanceStats()){
59                  if(!istat.getId().equals(instanceName))
60                      continue;
61                      Statistic  [] statArr = new Statistic  [3];
62                      String   health = istat.getHealth();
63                      long activeReq = Long.parseLong(istat.getNumActiveRequests());
64                      long totalReq = Long.parseLong(istat.getNumTotalRequests());
65                      long sampleTime = new Date  ().getTime();
66                      StringStatistic stat1 = new StringStatisticImpl("Health", "Instance Health", "NONE", startTime, sampleTime, health);
67                      CountStatistic   stat2 = new CountStatisticImpl("NumberOfActiveRequests", "Number Of Active Requests", "NONE", startTime, sampleTime, activeReq);
68                      CountStatistic   stat3 = new CountStatisticImpl("NumberOfTotalRequests", "Number Of Total Requests", "NONE", startTime, sampleTime, totalReq);
69                      statArr[0] = stat1;
70                      statArr[1] = stat2;
71                      statArr[2] = stat3;
72                      return statArr;
73              }
74          }
75          return null;
76      }
77  
78      /** Returns the server's health status - Healthy, Unhealthy or Quiesced.
79       * @return an instance of {@link StringStatistic}     
80       */
81      public StringStatistic getHealth() {
82          Statistic  [] statArr = getStatistics();
83          return (StringStatistic)statArr[0];
84      }
85      
86      /** Returns the number of active requests on this instance
87       * @return an instance of {@link CountStatistic}     
88       */
89      public CountStatistic   getNumberOfActiveRequests() {
90          Statistic  [] statArr = getStatistics();
91          return (CountStatistic  )statArr[1];
92      }
93      
94      /** Returns the total number of requests for this instance.
95       * @return an instance of {@link CountStatistic}     
96       */
97      public CountStatistic   getNumberOfTotalRequests() {
98          Statistic  [] statArr = getStatistics();
99          return (CountStatistic  )statArr[2];
100     }
101 
102 
103     public LoadBalancerServerStatsImpl(String   lbName,String   lbConfigName,String   clusterName,String   instanceName) {
104         this.lbName=lbName;
105         this.clusterName=clusterName;
106         this.instanceName=instanceName;
107         this.lbConfigName=lbConfigName;
108         this.lbff = ApplicationServer.getServerContext().getPluggableFeatureFactory().getLBFeatureFactory();
109         this.startTime=new Date  ().getTime();
110    }
111     
112     public LoadBalancerServerStatsImpl() {
113     }
114     
115     private String   instanceName = null;
116     private String   lbName = null;
117     private String   lbConfigName = null;
118     private String   clusterName = null;
119     private LBFeatureFactory lbff = null;
120     private long startTime = 0;
121 
122     
123 }
124
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