/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.server.deployment;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jboss.as.server.logging.ServerLogger;
import org.jboss.as.server.deployment.module.ModuleRootMarker;
import org.jboss.as.server.deployment.module.ResourceRoot;
import org.jboss.vfs.VFSUtils;
import org.jboss.vfs.VirtualFile;
/**
* A processor which creates a service loader index.
*
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
public final class ServiceLoaderProcessor implements DeploymentUnitProcessor {
/**
* {@inheritDoc}
*/
public void deploy(final DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final Map<String, List<String>> foundServices = new HashMap<String, List<String>>();
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
final ResourceRoot deploymentRoot = deploymentUnit.getAttachment(Attachments.DEPLOYMENT_ROOT);
if (deploymentRoot != null) {
processRoot(deploymentRoot, foundServices);
}
final List<ResourceRoot> resourceRoots = deploymentUnit.getAttachmentList(Attachments.RESOURCE_ROOTS);
for (ResourceRoot resourceRoot : resourceRoots) {
if (!SubDeploymentMarker.isSubDeployment(resourceRoot) && ModuleRootMarker.isModuleRoot(resourceRoot))
processRoot(resourceRoot, foundServices);
}
deploymentUnit.putAttachment(Attachments.SERVICES, new ServicesAttachment(foundServices));
}
private void processRoot(final ResourceRoot resourceRoot, final Map<String, List<String>> foundServices) throws DeploymentUnitProcessingException {
final VirtualFile virtualFile = resourceRoot.getRoot();
final VirtualFile child = virtualFile.getChild("META-INF/services");
for (VirtualFile serviceType : child.getChildren()) {
final String name = serviceType.getName();
try {
List<String> list = foundServices.get(name);
if (list == null) {
foundServices.put(name, list = new ArrayList<String>());
}
final InputStream stream = serviceType.openStream();
try {
final BufferedReader reader = new BufferedReader(new InputStreamReader(stream, StandardCharsets.UTF_8));
String line;
while ((line = reader.readLine()) != null) {
final int commentIdx = line.indexOf('#');
final String className;
if (commentIdx == -1) {
className = line.trim();
} else {
className = line.substring(0, commentIdx).trim();
}
if (className.length() == 0) {
continue;
}
list.add(className);
}
} finally {
VFSUtils.safeClose(stream);
}
} catch (IOException e) {
throw ServerLogger.ROOT_LOGGER.failedToReadVirtualFile(child, e);
}
}
}
/**
* {@inheritDoc}
*/
public void undeploy(final DeploymentUnit context) {
context.removeAttachment(Attachments.SERVICES);
}
}