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Protocol handler for communicating using a servlet / http following the Servlet 2.5/ 2.5/.x spec.

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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
 * as indicated by the @authors tag. All rights reserved.
 * See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.arquillian.protocol.servlet.runner;

import org.jboss.arquillian.container.test.spi.command.Command;
import org.jboss.arquillian.container.test.spi.command.CommandService;

/**
 * ServletRemoteEventService
 *
 * @author Aslak Knutsen
 * @version $Revision: $
 */
public class ServletCommandService implements CommandService {
    private static long TIMEOUT = 30000;

    @SuppressWarnings("unchecked")
    public  T execute(Command command) {
        String currentId = ServletTestRunner.currentCall.get();
        ServletTestRunner.events.put(currentId, command);

        long timeoutTime = System.currentTimeMillis() + TIMEOUT;
        while (timeoutTime > System.currentTimeMillis()) {
            Command newCommand = ServletTestRunner.events.get(currentId);
            if (newCommand != null) {
                if (newCommand.getThrowable() != null) {
                    throw new RuntimeException(newCommand.getThrowable());
                }
                if (newCommand.getResult() != null) {
                    return (T) newCommand.getResult();
                }
            }
            try {
                Thread.sleep(100);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        throw new RuntimeException("No command response within timeout of " + TIMEOUT + " ms.");
    }
}