| ConnectionHeartbeatJob.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.counter.service.persistence;
24
25 import com.liferay.portal.kernel.dao.jdbc.DataAccess;
26 import com.liferay.portal.kernel.job.IntervalJob;
27 import com.liferay.portal.kernel.job.JobExecutionContext;
28 import com.liferay.portal.kernel.job.JobExecutionException;
29 import com.liferay.portal.kernel.log.Log;
30 import com.liferay.portal.kernel.log.LogFactoryUtil;
31 import com.liferay.portal.kernel.util.Time;
32 import com.liferay.portal.util.PropsValues;
33
34 import java.sql.Connection;
35 import java.sql.Statement;
36
37 /**
38 * <a href="ConnectionHeartbeatJob.java.html"><b><i>View Source</i></b></a>
39 *
40 * @author Michael Young
41 *
42 */
43 public class ConnectionHeartbeatJob implements IntervalJob {
44
45 public static final long INTERVAL =
46 PropsValues.COUNTER_CONNECTION_HEARTBEAT_JOB_INTERVAL * Time.MINUTE;
47
48 public void execute(JobExecutionContext context)
49 throws JobExecutionException {
50
51 try {
52 sendHeartbeat();
53 }
54 catch (Exception e) {
55 throw new JobExecutionException(e);
56 }
57 }
58
59 public long getInterval() {
60 return INTERVAL;
61 }
62
63 protected void sendHeartbeat() throws Exception {
64 if (_log.isDebugEnabled()) {
65 _log.debug("Sending heartbeat");
66 }
67
68 Connection connection = CounterUtil.getPersistence().getConnection();
69
70 Statement statement = null;
71
72 try {
73 statement = connection.createStatement();
74
75 statement.execute(_SELECT_RELEASE);
76 }
77 finally {
78 DataAccess.cleanUp(statement);
79 }
80 }
81
82 private static String _SELECT_RELEASE = "SELECT releaseId FROM Release_";
83
84 private static final Log _log =
85 LogFactoryUtil.getLog(ConnectionHeartbeatJob.class);
86
87 }