executorfilterregressiontest.java

mina是以Java实现的一个开源的网络程序框架

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 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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,
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 *  "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.
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 */
package org.apache.mina.filter.executor;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;

import junit.framework.Assert;
import junit.framework.TestCase;

import org.apache.mina.core.filterchain.IoFilter.NextFilter;
import org.apache.mina.core.session.DummySession;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.core.write.WriteRequest;

/**
 * TODO Add documentation
 * 
 * @author The Apache MINA Project ([e-mail])
 * @version $Rev: 713957 $, $Date: 2008-11-14 10:27:16 +0100 (Fri, 14 Nov 2008) $
 */
public class ExecutorFilterRegressionTest extends TestCase {
    private ExecutorFilter filter;

    public ExecutorFilterRegressionTest() {
    }

    @Override
    public void setUp() throws Exception {
        filter = new ExecutorFilter(8);
    }

    @Override
    public void tearDown() throws Exception {
        ((ExecutorService) filter.getExecutor()).shutdown();
        filter = null;
    }

    public void testEventOrder() throws Throwable {
        final EventOrderChecker nextFilter = new EventOrderChecker();
        final EventOrderCounter[] sessions = new EventOrderCounter[] {
                new EventOrderCounter(), new EventOrderCounter(),
                new EventOrderCounter(), new EventOrderCounter(),
                new EventOrderCounter(), new EventOrderCounter(),
                new EventOrderCounter(), new EventOrderCounter(),
                new EventOrderCounter(), new EventOrderCounter(), };
        final int loop = 10000000;
        final int end = sessions.length - 1;
        final ExecutorFilter filter = this.filter;
        ExecutorService executor = (ExecutorService) filter.getExecutor();
        //executor.setKeepAliveTime(3, TimeUnit.SECONDS);

        for (int i = 0; i < loop; i++) {
            Integer objI = new Integer(i);

            for (int j = end; j >= 0; j--) {
                filter.messageReceived(nextFilter, sessions[j], objI);
            }

            if (nextFilter.throwable != null) {
                throw nextFilter.throwable;
            }
        }

        executor.shutdown();
        executor.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);

        for (int i = end; i >= 0; i--) {
            Assert.assertEquals(loop - 1, sessions[i].lastCount.intValue());
        }
    }

    private static class EventOrderCounter extends DummySession {
        private Integer lastCount = null;

        public synchronized void setLastCount(Integer newCount) {
            if (lastCount != null) {
                Assert.assertEquals(lastCount.intValue() + 1, newCount
                        .intValue());
            }

            lastCount = newCount;
        }
    }

    private static class EventOrderChecker implements NextFilter {
        private Throwable throwable;

        public void sessionOpened(IoSession session) {
        }

        public void sessionClosed(IoSession session) {
        }

        public void sessionIdle(IoSession session, IdleStatus status) {
        }

        public void exceptionCaught(IoSession session, Throwable cause) {
        }

        public void messageReceived(IoSession session, Object message) {
            try {
                ((EventOrderCounter) session).setLastCount((Integer) message);
            } catch (Throwable t) {
                if (this.throwable == null) {
                    this.throwable = t;
                }
            }
        }

        public void messageSent(IoSession session, WriteRequest writeRequest) {
        }

        public void filterWrite(IoSession session, WriteRequest writeRequest) {
        }

        public void filterClose(IoSession session) {
        }

        public void sessionCreated(IoSession session) {
        }
    }

    public static void main(String[] args) {
        junit.textui.TestRunner.run(ExecutorFilterRegressionTest.class);
    }
}