ActiveMQ example source code file (JournalImplTest.java)

This example ActiveMQ source code file (JournalImplTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

asyncdatamanager, file, hello, hello, interruptedexception, invalidrecordlocationexception, io, ioexception, journalfacade, packet, packet, recordlocation, recordlocation, util, world, world

The ActiveMQ JournalImplTest.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information 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, 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.apache.activemq.kaha.impl.async;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;

import junit.framework.TestCase;

import org.apache.activeio.journal.InvalidRecordLocationException;
import org.apache.activeio.journal.RecordLocation;
import org.apache.activeio.packet.ByteArrayPacket;
import org.apache.activeio.packet.Packet;
import org.apache.activemq.kaha.impl.async.JournalFacade.RecordLocationFacade;
import org.apache.activemq.kaha.impl.async.ReadOnlyAsyncDataManager;
import org.apache.activemq.util.ByteSequence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Tests the AsyncDataManager based Journal
 * 
 * 
 */
public class JournalImplTest extends TestCase {

    Logger log = LoggerFactory.getLogger(JournalImplTest.class);

    int size = 1024 * 10;
    int logFileCount = 2;
    File logDirectory = new File("target/dm-data2");
    private JournalFacade journal;

    /**
     * @see junit.framework.TestCase#setUp()
     */
    protected void setUp() throws Exception {
        if (logDirectory.exists()) {
            deleteDir(logDirectory);
        }
        assertTrue("Could not delete directory: " + logDirectory.getCanonicalPath(), !logDirectory.exists());
        AsyncDataManager dm = new AsyncDataManager();
        dm.setDirectory(logDirectory);
        dm.setMaxFileLength(1024 * 64);
        dm.start();
        journal = new JournalFacade(dm);
    }

    /**
     */
    private void deleteDir(File f) {
        File[] files = f.listFiles();
        for (int i = 0; i < files.length; i++) {
            File file = files[i];
            file.delete();
        }
        f.delete();
    }

    protected void tearDown() throws Exception {
        journal.close();
        if (logDirectory.exists()) {
            deleteDir(logDirectory);
        }
        // assertTrue( !logDirectory.exists() );
    }

    public void testLogFileCreation() throws IOException {
        RecordLocation mark = journal.getMark();
        assertNull(mark);
    }

    @SuppressWarnings("unchecked")
    public void testAppendAndRead() throws InvalidRecordLocationException, InterruptedException, IOException {

        Packet data1 = createPacket("Hello World 1");
        RecordLocation location1 = journal.write(data1, false);
        Packet data2 = createPacket("Hello World 2");
        RecordLocation location2 = journal.write(data2, false);
        Packet data3 = createPacket("Hello World 3");
        RecordLocation location3 = journal.write(data3, false);

        // Thread.sleep(1000);

        // Now see if we can read that data.
        Packet data;
        data = journal.read(location2);
        assertEquals(data2, data);
        data = journal.read(location1);
        assertEquals(data1, data);
        data = journal.read(location3);
        assertEquals(data3, data);

        // Can we cursor the data?
        RecordLocation l = journal.getNextRecordLocation(null);
        int t = l.compareTo(location1);
        assertEquals(0, t);
        data = journal.read(l);
        assertEquals(data1, data);

        l = journal.getNextRecordLocation(l);
        assertEquals(0, l.compareTo(location2));
        data = journal.read(l);
        assertEquals(data2, data);

        l = journal.getNextRecordLocation(l);
        assertEquals(0, l.compareTo(location3));
        data = journal.read(l);
        assertEquals(data3, data);

        l = journal.getNextRecordLocation(l);
        assertNull(l);

        log.info(journal.toString());
    }

    public void testReadOnlyRead() throws InvalidRecordLocationException, InterruptedException, IOException {
    	
    	Packet data1 = createPacket("Hello World 1");
        RecordLocation location1 = journal.write(data1, false);
        Packet data2 = createPacket("Hello World 2");
        RecordLocation location2 = journal.write(data2, false);
        Packet data3 = createPacket("Hello World 3");
        RecordLocation location3 = journal.write(data3, false);
        
        Packet packet;
        packet = journal.read(location2);
        assertEquals(data2, packet);
        packet = journal.read(location1);
        assertEquals(data1, packet);
        packet = journal.read(location3);
        assertEquals(data3, packet);
    	
        ArrayList<File> data = new ArrayList();
        data.add(logDirectory);
        ReadOnlyAsyncDataManager rodm = new ReadOnlyAsyncDataManager(data);
        rodm.start();
        try {
            for (Location curr = rodm.getFirstLocation(); curr != null; curr = rodm.getNextLocation(curr)) {
                ByteSequence bs = rodm.read(curr);
                assertNotNull(bs);
            }
        } finally {
    	    rodm.close();
        }
    }

    public void testCanReadFromArchivedLogFile() throws InvalidRecordLocationException, InterruptedException, IOException {

        Packet data1 = createPacket("Hello World 1");
        RecordLocationFacade location1 = (RecordLocationFacade)journal.write(data1, false);

        RecordLocationFacade pos;
        int counter = 0;
        do {

            Packet p = createPacket("<<>");
            pos = (RecordLocationFacade)journal.write(p, false);
            if (counter++ % 1000 == 0) {
                journal.setMark(pos, false);
            }

        } while (pos.getLocation().getDataFileId() < 5);

        // Now see if we can read that first packet.
        Packet data;
        data = journal.read(location1);
        assertEquals(data1, data);

    }

    /**
     * @param string
     * @return
     */
    private Packet createPacket(String string) {
        return new ByteArrayPacket(string.getBytes());
    }

    public static void assertEquals(Packet arg0, Packet arg1) {
        assertEquals(arg0.sliceAsBytes(), arg1.sliceAsBytes());
    }

    public static void assertEquals(byte[] arg0, byte[] arg1) {

        // System.out.println("Comparing: "+new String(arg0)+" and "+new
        // String(arg1));
        if (arg0 == null ^ arg1 == null) {
            fail("Not equal: " + arg0 + " != " + arg1);
        }
        if (arg0 == null) {
            return;
        }
        if (arg0.length != arg1.length) {
            fail("Array lenght not equal: " + arg0.length + " != " + arg1.length);
        }
        for (int i = 0; i < arg0.length; i++) {
            if (arg0[i] != arg1[i]) {
                fail("Array item not equal at index " + i + ": " + arg0[i] + " != " + arg1[i]);
            }
        }
    }
}