1
19
20 package com.liferay.counter.service.persistence;
21
22 import com.liferay.portal.kernel.dao.jdbc.DataAccess;
23 import com.liferay.portal.kernel.job.IntervalJob;
24 import com.liferay.portal.kernel.job.JobExecutionContext;
25 import com.liferay.portal.kernel.job.JobExecutionException;
26 import com.liferay.portal.kernel.log.Log;
27 import com.liferay.portal.kernel.log.LogFactoryUtil;
28 import com.liferay.portal.kernel.util.Time;
29 import com.liferay.portal.util.PropsValues;
30
31 import java.sql.Connection;
32 import java.sql.Statement;
33
34
40 public class ConnectionHeartbeatJob implements IntervalJob {
41
42 public static final long INTERVAL =
43 PropsValues.COUNTER_CONNECTION_HEARTBEAT_JOB_INTERVAL * Time.MINUTE;
44
45 public void execute(JobExecutionContext context)
46 throws JobExecutionException {
47
48 try {
49 sendHeartbeat();
50 }
51 catch (Exception e) {
52 throw new JobExecutionException(e);
53 }
54 }
55
56 public long getInterval() {
57 return INTERVAL;
58 }
59
60 protected void sendHeartbeat() throws Exception {
61 if (_log.isDebugEnabled()) {
62 _log.debug("Sending heartbeat");
63 }
64
65 Connection connection = CounterUtil.getPersistence().getConnection();
66
67 Statement statement = null;
68
69 try {
70 statement = connection.createStatement();
71
72 statement.execute(_SELECT_RELEASE);
73 }
74 finally {
75 DataAccess.cleanUp(statement);
76 }
77 }
78
79 private static String _SELECT_RELEASE = "SELECT releaseId FROM Release_";
80
81 private static final Log _log =
82 LogFactoryUtil.getLog(ConnectionHeartbeatJob.class);
83
84 }