TestPersistence.java

/**
 * Copyright (c) 2011 Yahoo! Inc. All rights reserved.
 *
 * 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. See accompanying LICENSE file.
 */

package com.yahoo.omid.tso;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Test;

import com.yahoo.omid.tso.messages.CommitRequest;
import com.yahoo.omid.tso.messages.CommitResponse;
import com.yahoo.omid.tso.messages.CommittedTransactionReport;
import com.yahoo.omid.tso.messages.TimestampRequest;
import com.yahoo.omid.tso.messages.TimestampResponse;

public class TestPersistence extends TSOTestBase {
    private static final Log LOG = LogFactory.getLog(TestPersistence.class);
   
   @Test
   public void testCommit() throws Exception {
        
       clientHandler.sendMessage(new TimestampRequest());
       clientHandler.receiveBootstrap();
       TimestampResponse tr1 = clientHandler.receiveMessage(TimestampResponse.class);

       clientHandler.sendMessage(new CommitRequest(tr1.timestamp, new RowKey[] { r1 }));
       CommitResponse cr1 = clientHandler.receiveMessage(CommitResponse.class);
       
       clientHandler.sendMessage(new TimestampRequest());
       // Pending commit report
       CommittedTransactionReport ctr1 = clientHandler.receiveMessage(CommittedTransactionReport.class);
       assertEquals(cr1.startTimestamp, ctr1.startTimestamp);
       assertEquals(cr1.commitTimestamp, ctr1.commitTimestamp);
       
       tr1 = clientHandler.receiveMessage(TimestampResponse.class);

       clientHandler.sendMessage(new CommitRequest(tr1.timestamp, new RowKey[] { r1, r2 }));
       cr1 = clientHandler.receiveMessage(CommitResponse.class);
             
       LOG.info("Going to shut down TSO");
       teardownTSO();
      
       LOG.info("Going to restart TSO");
       setupTSO();
      
       LOG.info("TSO started, going to process transactions");
       clientHandler.sendMessage(new TimestampRequest());
       clientHandler.receiveBootstrap();
       TimestampResponse tr2 = clientHandler.receiveMessage(TimestampResponse.class);

       clientHandler.sendMessage(new CommitRequest(tr2.timestamp, new RowKey[] { r1 }));  
       CommitResponse cr2 = clientHandler.receiveMessage(CommitResponse.class);
       LOG.info("Timestamps: start " + tr2.timestamp + ", commit" + cr2.startTimestamp);
       assertTrue(cr2.committed);
       assertTrue(cr2.commitTimestamp > tr2.timestamp);       
       assertEquals(tr2.timestamp, cr2.startTimestamp);
       assertTrue(tr2.timestamp > tr1.timestamp);
      
   }
   
}