/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.ode.bpel.engine.migration;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Collection;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.bpel.dao.BpelDAOConnection;
import org.apache.ode.bpel.dao.ProcessDAO;
import org.apache.ode.bpel.dao.ProcessInstanceDAO;
import org.apache.ode.bpel.engine.BpelProcess;
import org.apache.ode.bpel.engine.IMAManager;
import org.apache.ode.bpel.engine.OutstandingRequestManager;
import org.apache.ode.jacob.vpu.ExecutionQueueImpl;
/**
* Migrates OutstandingRequestManager to IMAManager
*
*/
public class OutstandingRequestsMigration implements Migration {
private static Log __log = LogFactory.getLog(OutstandingRequestsMigration.class);
public boolean migrate(Set<BpelProcess> registeredProcesses, BpelDAOConnection connection) {
boolean migrationResult = true;
for (BpelProcess process : registeredProcesses) {
ProcessDAO processDao = connection.getProcess(process.getConf().getProcessId());
Collection<ProcessInstanceDAO> pis = processDao.getActiveInstances();
for (ProcessInstanceDAO instance : pis) {
__log.debug("Migrating outstanding requests for instance " + instance.getInstanceId());
try {
if (instance.getExecutionState() == null) {
//Completed instance
__log.debug("Skipped");
} else {
ExecutionQueueImpl soup = new ExecutionQueueImpl(this.getClass().getClassLoader());
soup.setReplacementMap(process.getReplacementMap(processDao.getProcessId()));
soup.read(new ByteArrayInputStream(instance.getExecutionState()));
Object data = soup.getGlobalData();
if (data instanceof OutstandingRequestManager) {
OutstandingRequestManager orm = (OutstandingRequestManager) data;
IMAManager imaManager = new IMAManager();
imaManager.migrateRids(orm.getRids());
soup.setGlobalData(imaManager);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
soup.write(bos);
instance.setExecutionState(bos.toByteArray());
__log.debug("Migrated outstanding requests for instance " + instance.getInstanceId());
}
}
} catch (Exception e) {
__log.debug("", e);
__log.error("Error migrating outstanding requests for instance " + instance.getInstanceId());
migrationResult = false;
}
}
}
return migrationResult;
}
}