/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, 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.host.controller;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.RejectedExecutionException;
import org.jboss.as.host.controller.discovery.DiscoveryOption;
import org.jboss.as.host.controller.discovery.DomainControllerManagementInterface;
import org.jboss.as.network.NetworkInterfaceBinding;
import org.jboss.as.server.services.net.NetworkInterfaceService;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceBuilder;
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;
/**
* Service responsible for allowing a domain controller to be discovered by
* slave host controllers.
*
* @author Farah Juma
*/
class DiscoveryService implements Service<Void> {
static final ServiceName SERVICE_NAME = ServiceName.JBOSS.append("host", "controller", "discovery");
private final Map<String, InjectedValue<NetworkInterfaceBinding>> interfaceBindings = new HashMap<String, InjectedValue<NetworkInterfaceBinding>>();
private final InjectedValue<ExecutorService> executorService = new InjectedValue<ExecutorService>();
private final List<DiscoveryOption> discoveryOptions;
private final List<DomainControllerManagementInterface> managementInterfaces;
private final boolean isMasterDomainController;
/**
* Create the DiscoveryService instance.
*
* @param discoveryOptions the list of discovery options
* @param port the port number of the domain controller
* @param isMasterDomainController whether or not the local host controller is the master
*/
private DiscoveryService(List<DiscoveryOption> discoveryOptions, List<DomainControllerManagementInterface> managementInterfaces, boolean isMasterDomainController) {
this.discoveryOptions = discoveryOptions;
this.managementInterfaces = managementInterfaces;
for(DomainControllerManagementInterface managementInterface : managementInterfaces) {
interfaceBindings.put(managementInterface.getHost(), new InjectedValue<NetworkInterfaceBinding>());
}
this.isMasterDomainController = isMasterDomainController;
}
static void install(final ServiceTarget serviceTarget, final List<DiscoveryOption> discoveryOptions,
final List<DomainControllerManagementInterface> managementInterfaces, final boolean isMasterDomainController) {
final DiscoveryService discovery = new DiscoveryService(discoveryOptions, managementInterfaces, isMasterDomainController);
ServiceBuilder builder = serviceTarget.addService(DiscoveryService.SERVICE_NAME, discovery)
.addDependency(HostControllerService.HC_EXECUTOR_SERVICE_NAME, ExecutorService.class, discovery.executorService);
Set<String> alreadyDefinedInterfaces = new HashSet<String>();
for(DomainControllerManagementInterface managementInterface : managementInterfaces) {
if(!alreadyDefinedInterfaces.contains(managementInterface.getAddress())) {
builder.addDependency(NetworkInterfaceService.JBOSS_NETWORK_INTERFACE.append(managementInterface.getAddress()), NetworkInterfaceBinding.class, discovery.interfaceBindings.get(managementInterface.getAddress()));
alreadyDefinedInterfaces.add(managementInterface.getAddress());
}
}
builder.install();
}
/** {@inheritDoc} */
@Override
public synchronized void start(final StartContext context) throws StartException {
final Runnable task = new Runnable() {
@Override
public void run() {
try {
if (isMasterDomainController && (discoveryOptions != null)) {
// Allow slave host controllers to discover this domain controller using any
// of the provided discovery options.
for(DomainControllerManagementInterface managementInterface : managementInterfaces) {
String host = interfaceBindings.get(managementInterface.getAddress()).getValue().getAddress().getHostAddress();
managementInterface.setHost(host);
}
for (DiscoveryOption discoveryOption : discoveryOptions) {
discoveryOption.allowDiscovery(managementInterfaces);
}
}
context.complete();
} catch (Exception e) {
context.failed(new StartException(e));
}
}
};
try {
executorService.getValue().execute(task);
} catch (RejectedExecutionException e) {
task.run();
} finally {
context.asynchronous();
}
}
/** {@inheritDoc} */
@Override
public synchronized void stop(final StopContext context) {
final Runnable task = new Runnable() {
@Override
public void run() {
try {
if (isMasterDomainController && (discoveryOptions != null)) {
for (DiscoveryOption discoveryOption : discoveryOptions) {
discoveryOption.cleanUp();
}
}
} finally {
context.complete();
}
}
};
try {
executorService.getValue().execute(task);
} catch (RejectedExecutionException e) {
task.run();
} finally {
context.asynchronous();
}
}
/** {@inheritDoc} */
@Override
public synchronized Void getValue() throws IllegalStateException, IllegalArgumentException {
return null;
}
}