/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, 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 static java.security.AccessController.doPrivileged;
import java.io.Closeable;
import java.io.IOException;
import java.security.PrivilegedAction;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ScheduledExecutorService;
import org.jboss.as.server.logging.ServerLogger;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.jboss.threads.JBossThreadFactory;
import org.jboss.vfs.TempFileProvider;
import org.jboss.vfs.VFS;
import org.jboss.vfs.VFSUtils;
import org.jboss.vfs.VirtualFile;
/**
* Provides VFS mounts of deployment content.
*
* @author Brian Stansberry
*/
public interface DeploymentMountProvider {
/**
* Standard ServiceName under which a service controller for an instance of
* {@code Service<ServerDeploymentRepository> would be registered.
*/
ServiceName SERVICE_NAME = ServiceName.JBOSS.append("deployment-mount-provider");
/**
* Requests that the given content be mounted in VFS at the given {@code mountPoint}.
*
*
* @param deploymentContents the deployment contents. Cannot be <code>null</code>
* @param mountPoint VFS location where the content should be mounted. Cannot be <code>null</code>
* @param mountType The type of mount to perform
* @return {@link java.io.Closeable} that can be used to close the mount
*
* @throws IOException if there is an IO problem while mounting
*/
Closeable mountDeploymentContent(VirtualFile deploymentContents, VirtualFile mountPoint, MountType mountType) throws IOException;
static class Factory {
public static void addService(final ServiceTarget serviceTarget) {
ServerDeploymentRepositoryImpl service = new ServerDeploymentRepositoryImpl();
org.jboss.as.server.Services.addServerExecutorDependency(
serviceTarget.addService(DeploymentMountProvider.SERVICE_NAME, service),
service.injectedExecutorService, false)
.install();
}
/**
* Default implementation of {@link DeploymentMountProvider}.
*/
private static class ServerDeploymentRepositoryImpl implements DeploymentMountProvider, Service<DeploymentMountProvider> {
private final InjectedValue<ExecutorService> injectedExecutorService = new InjectedValue<ExecutorService>();
private volatile TempFileProvider tempFileProvider;
private volatile ScheduledExecutorService scheduledExecutorService;
/**
* Creates a new ServerDeploymentRepositoryImpl.
*/
private ServerDeploymentRepositoryImpl() {
}
@Override
public Closeable mountDeploymentContent(final VirtualFile contents, VirtualFile mountPoint, MountType type) throws IOException {
// according to the javadoc contents can not be null
assert contents != null : "null contents";
switch (type) {
case ZIP:
return VFS.mountZip(contents, mountPoint, tempFileProvider);
case EXPANDED:
return VFS.mountZipExpanded(contents, mountPoint, tempFileProvider);
case REAL:
return VFS.mountReal(contents.getPhysicalFile(), mountPoint);
default:
throw ServerLogger.ROOT_LOGGER.unknownMountType(type);
}
}
@Override
public void start(StartContext context) throws StartException {
try {
final JBossThreadFactory threadFactory = doPrivileged(new PrivilegedAction<JBossThreadFactory>() {
public JBossThreadFactory run() {
return new JBossThreadFactory(new ThreadGroup("ServerDeploymentRepository-temp-threads"), true, null, "%G - %t", null, null);
}
});
scheduledExecutorService = Executors.newScheduledThreadPool(2, threadFactory);
tempFileProvider = TempFileProvider.create("temp", scheduledExecutorService, true);
} catch (IOException e) {
throw ServerLogger.ROOT_LOGGER.failedCreatingTempProvider(e);
}
ServerLogger.ROOT_LOGGER.debugf("%s started", DeploymentMountProvider.class.getSimpleName());
}
@Override
public void stop(final StopContext context) {
Runnable r = new Runnable() {
@Override
public void run() {
try {
VFSUtils.safeClose(tempFileProvider);
} finally {
try {
ScheduledExecutorService ses = scheduledExecutorService;
scheduledExecutorService = null;
if (ses != null) {
ses.shutdown();
}
ServerLogger.ROOT_LOGGER.debugf("%s stopped", DeploymentMountProvider.class.getSimpleName());
} finally {
context.complete();
}
}
}
};
final ExecutorService executorService = injectedExecutorService.getValue();
try {
try {
executorService.execute(r);
} catch (RejectedExecutionException e) {
r.run();
}
} finally {
context.asynchronous();
}
}
@Override
public DeploymentMountProvider getValue() throws IllegalStateException {
return this;
}
}
}
}