/*
* 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.launcher;
import org.gradle.api.Action;
import org.gradle.launcher.protocol.Command;
import org.gradle.launcher.protocol.CommandComplete;
import org.gradle.logging.internal.OutputEvent;
import org.gradle.logging.internal.OutputEventListener;
import org.gradle.messaging.remote.internal.Connection;
/**
* The client piece of the build daemon.
*
* <p>Protocol is this:</p>
*
* <ol> <li>Client connects to the server.</li>
*
* <li>Client sends a {@link org.gradle.launcher.protocol.Command} message.</li>
*
* <li>Server sends zero or more {@link org.gradle.logging.internal.OutputEvent} messages. Note that the server may
* send output messages before it receives the command message.
* </li>
*
* <li>Server sends a {@link org.gradle.launcher.protocol.CommandComplete} message.</li>
*
* <li>Connection is closed.</li>
*
* </ol>
*/
public abstract class DaemonClientAction implements Action<ExecutionListener> {
protected final OutputEventListener outputEventListener;
public DaemonClientAction(OutputEventListener outputEventListener) {
this.outputEventListener = outputEventListener;
}
protected void run(Command command, Connection<Object> connection, ExecutionListener executionListener) {
try {
connection.dispatch(command);
while (true) {
Object object = connection.receive();
if (object instanceof CommandComplete) {
CommandComplete commandComplete = (CommandComplete) object;
if (commandComplete.getFailure() != null) {
executionListener.onFailure(commandComplete.getFailure());
}
break;
}
OutputEvent outputEvent = (OutputEvent) object;
outputEventListener.onOutput(outputEvent);
}
} finally {
connection.stop();
}
}
}