/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.server.configuration.job;
import java.util.List;
import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobDetail;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.rhq.core.domain.auth.Subject;
import org.rhq.core.domain.resource.group.ResourceGroup;
import org.rhq.core.domain.util.OrderingField;
import org.rhq.core.domain.util.PageControl;
import org.rhq.core.domain.util.PageOrdering;
import org.rhq.core.util.exception.ThrowableUtil;
import org.rhq.enterprise.server.configuration.ConfigurationManagerLocal;
import org.rhq.enterprise.server.util.LookupUtil;
public abstract class AbstractGroupConfigurationUpdateJob implements Job {
public static final String DATAMAP_INT_CONFIG_GROUP_UPDATE_ID = "configGroupUpdateId";
public static final String DATAMAP_INT_SUBJECT_ID = "subjectId";
protected static JobDetail getJobDetail(ResourceGroup group, Subject subject, JobDataMap jobDataMap,
Class jobClass, String jobNamePrefix) {
JobDetail jobDetail = new JobDetail();
jobDetail.setName(createUniqueJobName(group, subject, jobNamePrefix));
jobDetail.setGroup(createJobGroupName(group, jobNamePrefix));
jobDetail.setVolatility(false); // we want it persisted
jobDetail.setDurability(false);
jobDetail.setRequestsRecovery(false);
jobDetail.setJobClass(jobClass);
jobDetail.setJobDataMap(jobDataMap);
return jobDetail;
}
public void execute(JobExecutionContext jobContext) throws JobExecutionException {
JobDetail jobDetail = jobContext.getJobDetail();
JobDataMap jobDataMap = jobDetail.getJobDataMap();
Integer configurationGroupUpdateId = jobDataMap.getIntFromString(DATAMAP_INT_CONFIG_GROUP_UPDATE_ID);
Integer subjectId = jobDataMap.getIntFromString(DATAMAP_INT_SUBJECT_ID);
Subject subject = LookupUtil.getSubjectManager().getSubjectById(subjectId);
processGroupConfigurationUpdate(configurationGroupUpdateId, subject);
}
private void processGroupConfigurationUpdate(Integer groupConfigurationUpdateId, Subject subject) {
ConfigurationManagerLocal configurationManager = LookupUtil.getConfigurationManager();
String errorMessages = null;
try {
long childPluginConfigurationUpdateCount = getConfigurationUpdateCount(groupConfigurationUpdateId,
configurationManager);
int rowsProcessed = 0;
PageControl pc = new PageControl(0, 1000, new OrderingField("cu.id", PageOrdering.ASC));
while (true) {
List<Integer> pagedChildUpdateIds = getConfigurationUpdateIds(groupConfigurationUpdateId,
configurationManager, pc);
if (pagedChildUpdateIds.size() <= 0) {
break;
}
for (Integer childUpdateId : pagedChildUpdateIds) {
// failing one update request is not reason to fail all of the remaining updates
// so, wrap in a try catch and gather up the errors to subsequently fail the group update. This
// will especially benefit group plugin config, which currently executes synchronously.
try {
executeConfigurationUpdate(configurationManager, childUpdateId, subject);
} catch (Exception e) {
errorMessages = appendErrorMessages(errorMessages, "Failed Member Update Id=" + childUpdateId,
e.toString());
}
}
rowsProcessed += pagedChildUpdateIds.size();
if (rowsProcessed >= childPluginConfigurationUpdateCount) {
break;
}
pc.setPageNumber(pc.getPageNumber() + 1);
}
} catch (Exception e) {
errorMessages = appendErrorMessages(errorMessages, "Failed Group Update Id=" + groupConfigurationUpdateId,
ThrowableUtil.getAllMessages(e));
} finally {
completeGroupConfigurationUpdate(configurationManager, groupConfigurationUpdateId, errorMessages);
}
}
private String appendErrorMessages(String currentMessages, String header, String newMessages) {
currentMessages = (null == currentMessages) ? "" : currentMessages + "\n";
return currentMessages.concat(" [" + header + ": " + newMessages);
}
private static String createUniqueJobName(ResourceGroup group, Subject subject, String jobNamePrefix) {
return createJobGroupName(group, jobNamePrefix) + "-" + subject.getName().hashCode() + "-"
+ System.currentTimeMillis();
}
private static String createJobGroupName(ResourceGroup group, String jobNamePrefix) {
return jobNamePrefix + group.getId();
}
protected abstract List<Integer> getConfigurationUpdateIds(Integer groupPluginConfigurationUpdateId,
ConfigurationManagerLocal configurationManager, PageControl pc);
protected abstract long getConfigurationUpdateCount(Integer groupPluginConfigurationUpdateId,
ConfigurationManagerLocal configurationManager);
protected abstract void executeConfigurationUpdate(ConfigurationManagerLocal configurationManager,
Integer childUpdateId, Subject subject);
protected abstract void completeGroupConfigurationUpdate(ConfigurationManagerLocal configurationManager,
Integer groupConfigurationUpdateId, String errorMessages);
}