/*
* 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.felix.deploymentadmin.spi;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.osgi.service.deploymentadmin.DeploymentException;
import org.osgi.service.deploymentadmin.spi.ResourceProcessor;
import org.osgi.service.deploymentadmin.spi.ResourceProcessorException;
import org.osgi.service.log.LogService;
/**
* Command that commits all the resource processors that were added to the
* command.
*/
public class CommitResourceCommand extends Command {
private final List m_processors = new ArrayList();
protected void doExecute(DeploymentSessionImpl session) throws Exception {
for (ListIterator i = m_processors.listIterator(m_processors.size()); i.hasPrevious();) {
ResourceProcessor processor = (ResourceProcessor) i.previous();
try {
processor.prepare();
}
catch (ResourceProcessorException e) {
session.getLog().log(LogService.LOG_ERROR, "Preparing commit for resource processor failed", e);
// Check what error code we got...
if (e.getCode() == ResourceProcessorException.CODE_PREPARE) {
throw new DeploymentException(CODE_COMMIT_ERROR, "Preparing commit for resource processor failed!", e);
}
throw new DeploymentException(e.getCode(), "Preparing commit for resource processor failed!", e);
}
catch (Exception e) {
session.getLog().log(LogService.LOG_ERROR, "Preparing commit for resource processor failed", e);
throw new DeploymentException(CODE_OTHER_ERROR, "Preparing commit for resource processor failed", e);
}
}
for (ListIterator i = m_processors.listIterator(m_processors.size()); i.hasPrevious();) {
ResourceProcessor processor = (ResourceProcessor) i.previous();
try {
processor.commit();
}
catch (Exception e) {
// We cannot throw an exception, see OSGi spec.
session.getLog().log(LogService.LOG_ERROR, "Committing resource processor '" + processor + "' failed", e);
}
}
m_processors.clear();
}
protected void rollback(DeploymentSessionImpl session) {
for (ListIterator i = m_processors.listIterator(m_processors.size()); i.hasPrevious();) {
ResourceProcessor processor = (ResourceProcessor) i.previous();
try {
processor.rollback();
}
catch (Exception e) {
// We cannot throw an exception, see OSGi spec.
session.getLog().log(LogService.LOG_ERROR, "Rollback of resource processor '" + processor + "' failed", e);
}
finally {
i.remove();
}
}
}
/**
* Add a resource processor, all resource processors that are added will be
* committed when the command is executed.
*
* @param processor The resource processor to add.
* @return true if the resource processor was added, false if it was already
* added.
*/
public boolean addResourceProcessor(ResourceProcessor processor) {
for (Iterator i = m_processors.iterator(); i.hasNext();) {
ResourceProcessor proc = (ResourceProcessor) i.next();
if (proc == processor) {
return false;
}
}
m_processors.add(processor);
return true;
}
}