/*
* 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.HashSet;
import java.util.Set;
import org.apache.felix.deploymentadmin.AbstractDeploymentPackage;
import org.apache.felix.deploymentadmin.ResourceInfoImpl;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.deploymentadmin.DeploymentException;
import org.osgi.service.deploymentadmin.spi.ResourceProcessor;
import org.osgi.service.log.LogService;
/**
* Command that drops resources.
*/
public class DropAllResourcesCommand extends Command {
private final CommitResourceCommand m_commitCommand;
/**
* Creates an instance of this command. The commit command is used to make
* sure the resource processors used to drop all resources will be committed
* at a later stage in the process.
*
* @param commitCommand The commit command that will be executed at a later
* stage in the process.
*/
public DropAllResourcesCommand(CommitResourceCommand commitCommand) {
m_commitCommand = commitCommand;
}
protected void doExecute(DeploymentSessionImpl session) throws Exception {
// Allow proper rollback in case the drop fails...
addRollback(new RollbackCommitAction(session));
AbstractDeploymentPackage target = session.getTargetAbstractDeploymentPackage();
BundleContext context = session.getBundleContext();
LogService log = session.getLog();
// Collect all unique paths of all processed resources...
Set resourceProcessors = new HashSet();
ResourceInfoImpl[] orderedTargetResources = target.getOrderedResourceInfos();
for (int i = orderedTargetResources.length - 1; i >= 0; i--) {
ResourceInfoImpl resourceInfo = orderedTargetResources[i];
String rpName = resourceInfo.getResourceProcessor();
String path = resourceInfo.getPath();
if (resourceProcessors.contains(rpName)) {
// Already seen this RP; continue on the next one...
continue;
}
// Keep track of which resource processors we've seen already...
resourceProcessors.add(rpName);
ServiceReference ref = target.getResourceProcessor(path);
if (ref == null) {
log.log(LogService.LOG_ERROR, "Failed to find resource processor for '" + rpName + "'!");
throw new DeploymentException(CODE_PROCESSOR_NOT_FOUND, "Failed to find resource processor '" + rpName + "'!");
}
ResourceProcessor resourceProcessor = (ResourceProcessor) context.getService(ref);
if (resourceProcessor == null) {
log.log(LogService.LOG_ERROR, "Failed to find resource processor for '" + rpName + "'!");
throw new DeploymentException(CODE_PROCESSOR_NOT_FOUND, "Failed to find resource processor '" + rpName + "'!");
}
try {
if (m_commitCommand.addResourceProcessor(resourceProcessor)) {
resourceProcessor.begin(session);
}
resourceProcessor.dropAllResources();
}
catch (Exception e) {
log.log(LogService.LOG_ERROR, "Failed to drop all resources for resource processor '" + rpName + "'!", e);
throw new DeploymentException(CODE_OTHER_ERROR, "Failed to drop all resources for resource processor '" + rpName + "'!", e);
}
}
}
private class RollbackCommitAction extends AbstractAction {
private final DeploymentSessionImpl m_session;
public RollbackCommitAction(DeploymentSessionImpl session) {
m_session = session;
}
protected void doRun() {
m_commitCommand.rollback(m_session);
}
}
}