/*
* JBoss, Home of Professional Open Source.
* Copyright 2014, 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.wildfly.extension.requestcontroller;
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;
/**
* A service that manages the lifecycle of a control point.
*
* WARNING: If the request controller is disabled then the control point will not be created,
* code that uses this control point must be aware that in some situations it will be null.
*
* @author Stuart Douglas
*/
public class ControlPointService implements Service<ControlPoint>{
private static final ServiceName SERVICE_NAME = RequestController.SERVICE_NAME.append("control-point");
private final String deployment;
private final String entryPoint;
private volatile ControlPoint value;
private final InjectedValue<RequestController> globalRequestControllerInjectedValue = new InjectedValue<>();
ControlPointService(String deployment, String entryPoint) {
this.deployment = deployment;
this.entryPoint = entryPoint;
}
public static ServiceName serviceName(final String deployment, final String entryPoint) {
return SERVICE_NAME.append(deployment, entryPoint);
}
public static void install(final ServiceTarget target, final String deployment, final String entryPoint) {
ControlPointService service = new ControlPointService(deployment, entryPoint);
target.addService(serviceName(deployment, entryPoint), service)
.addDependency(RequestController.SERVICE_NAME, RequestController.class, service.globalRequestControllerInjectedValue)
.install();
}
@Override
public void start(StartContext startContext) throws StartException {
value = globalRequestControllerInjectedValue.getValue().getControlPoint(deployment, entryPoint);
}
@Override
public void stop(StopContext stopContext) {
globalRequestControllerInjectedValue.getValue().removeControlPoint(value);
value = null;
}
@Override
public ControlPoint getValue() throws IllegalStateException, IllegalArgumentException {
return value;
}
}