/*
* Copyright 2010 the original author or authors.
*
* Licensed 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.gradle.process.internal.child;
import org.gradle.api.Action;
import org.gradle.messaging.remote.Address;
import org.gradle.messaging.remote.MessagingClient;
import org.gradle.messaging.remote.ObjectConnection;
import org.gradle.messaging.remote.internal.MessagingServices;
import org.gradle.process.internal.WorkerProcessContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.Serializable;
/**
* <p>The final stage of worker start-up. Takes care of executing the worker action.</p>
*
* <p>It is instantiated in the implementation ClassLoader and called from {@link ImplementationClassLoaderWorker}.<p>
*/
public class ActionExecutionWorker implements Action<WorkerContext>, Serializable {
private static final Logger LOGGER = LoggerFactory.getLogger(ActionExecutionWorker.class);
private final Action<? super WorkerProcessContext> action;
private final Object workerId;
private final String displayName;
private final Address serverAddress;
public ActionExecutionWorker(Action<? super WorkerProcessContext> action, Object workerId, String displayName,
Address serverAddress) {
this.action = action;
this.workerId = workerId;
this.displayName = displayName;
this.serverAddress = serverAddress;
}
public void execute(final WorkerContext workerContext) {
MessagingServices messagingServices = createClient();
try {
final MessagingClient client = messagingServices.get(MessagingClient.class);
final ObjectConnection clientConnection = client.getConnection(serverAddress);
try {
LOGGER.debug("Starting {}.", displayName);
WorkerProcessContext context = new WorkerProcessContext() {
public ObjectConnection getServerConnection() {
return clientConnection;
}
public ClassLoader getApplicationClassLoader() {
return workerContext.getApplicationClassLoader();
}
public Object getWorkerId() {
return workerId;
}
public String getDisplayName() {
return displayName;
}
};
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(action.getClass().getClassLoader());
try {
action.execute(context);
} finally {
Thread.currentThread().setContextClassLoader(contextClassLoader);
}
LOGGER.debug("Completed {}.", displayName);
} finally {
clientConnection.stop();
}
} finally {
LOGGER.debug("Stopping client connection.");
messagingServices.stop();
}
}
MessagingServices createClient() {
return new MessagingServices(getClass().getClassLoader());
}
}