Package com.yahoo.omid.tso

Source Code of com.yahoo.omid.tso.TestBasicTransaction

/**
* 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.assertFalse;
import static org.junit.Assert.assertTrue;

import java.io.IOException;

import org.junit.Test;

import com.yahoo.omid.tso.messages.AbortedTransactionReport;
import com.yahoo.omid.tso.messages.CleanedTransactionReport;
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.FullAbortRequest;
import com.yahoo.omid.tso.messages.TimestampRequest;
import com.yahoo.omid.tso.messages.TimestampResponse;

public class TestBasicTransaction extends TSOTestBase {

   @Test
   public void testConflicts() throws IOException, InterruptedException {
      clientHandler.sendMessage(new TimestampRequest());
      clientHandler.receiveBootstrap();
      TimestampResponse tr1 = clientHandler.receiveMessage(TimestampResponse.class);

      clientHandler.sendMessage(new TimestampRequest());
      TimestampResponse tr2 = clientHandler.receiveMessage(TimestampResponse.class);

      clientHandler.sendMessage(new CommitRequest(tr1.timestamp, new RowKey[] { r1 }));
      CommitResponse cr1 = clientHandler.receiveMessage(CommitResponse.class);
      assertTrue(cr1.committed);
      assertEquals(tr1.timestamp, cr1.startTimestamp);

      clientHandler.sendMessage(new CommitRequest(tr2.timestamp, new RowKey[] { r1, r2 }));
      CommitResponse cr2 = clientHandler.receiveMessage(CommitResponse.class);
      assertFalse(cr2.committed);

      // TODO fix this. Commiting an already committed value (either failed or commited) should fail
      // FIXME to do this.
//      clientHandler.sendMessage(new CommitRequest(tr1.timestamp, new RowKey[] { r2 }));
//      messageReceived = clientHandler.receiveMessage();
//      assertThat(messageReceived, is(CommitResponse.class));
//      CommitResponse cr3 = (CommitResponse) messageReceived;
//      assertFalse(cr3.committed);
     
      clientHandler.sendMessage(new TimestampRequest());
      // Pending commit report
      CommittedTransactionReport ctr1 = clientHandler.receiveMessage(CommittedTransactionReport.class);
      assertEquals(cr1.startTimestamp, ctr1.startTimestamp);
      assertEquals(cr1.commitTimestamp, ctr1.commitTimestamp);
      // Aborted transaction report
      AbortedTransactionReport atr = clientHandler.receiveMessage(AbortedTransactionReport.class);
      assertEquals(cr2.startTimestamp, atr.startTimestamp);
      // Full Abort report
      CleanedTransactionReport cltr = clientHandler.receiveMessage(CleanedTransactionReport.class);
      assertEquals(cr2.startTimestamp, cltr.startTimestamp);
     
      TimestampResponse tr3 = clientHandler.receiveMessage(TimestampResponse.class);

      clientHandler.sendMessage(new CommitRequest(tr3.timestamp, new RowKey[] { r1, r2 }));
      CommitResponse cr3 = clientHandler.receiveMessage(CommitResponse.class);
      assertTrue(cr3.committed);
      assertEquals(tr3.timestamp, cr3.startTimestamp);

      clientHandler.sendMessage(new TimestampRequest());

      // Pending commit report
      CommittedTransactionReport ctr3 = clientHandler.receiveMessage(CommittedTransactionReport.class);
      assertEquals(cr3.startTimestamp, ctr3.startTimestamp);
      assertEquals(cr3.commitTimestamp, ctr3.commitTimestamp);
     
      TimestampResponse tr4 = clientHandler.receiveMessage(TimestampResponse.class);

      clientHandler.sendMessage(new CommitRequest(tr4.timestamp, new RowKey[] { r2 }));
      CommitResponse cr4 = clientHandler.receiveMessage(CommitResponse.class);
      assertTrue(cr4.committed);
      assertEquals(tr4.timestamp, cr4.startTimestamp);
     
      // Fetch commit report
      clientHandler.sendMessage(new TimestampRequest());
      clientHandler.receiveMessage(CommittedTransactionReport.class);
      clientHandler.receiveMessage(TimestampResponse.class);
   }

}
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