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/*
* 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.zookeeper.test;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.HashMap;
import org.apache.zookeeper.PortAssignment;
import org.apache.zookeeper.ZKTestCase;
import org.apache.zookeeper.server.quorum.FastLeaderElection;
import org.apache.zookeeper.server.quorum.QuorumPeer;
import org.apache.zookeeper.server.quorum.QuorumPeer.QuorumServer;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FLEPredicateTest extends ZKTestCase {
protected static final Logger LOG = LoggerFactory.getLogger(FLEPredicateTest.class);
class MockFLE extends FastLeaderElection {
MockFLE(QuorumPeer peer) {
super(peer, peer.createCnxnManager());
}
boolean predicate(long newId, long newZxid, long newEpoch, long curId, long curZxid, long curEpoch) {
return this.totalOrderPredicate(newId, newZxid, newEpoch, curId, curZxid, curEpoch);
}
}
HashMap<Long, QuorumServer> peers;
@Test
public void testPredicate() throws IOException {
peers = new HashMap<Long, QuorumServer>(3);
/*
* Creates list of peers.
*/
for (int i = 0; i < 3; i++) {
peers.put(Long.valueOf(i), new QuorumServer(i, new InetSocketAddress("127.0.0.1", PortAssignment.unique()), new InetSocketAddress("127.0.0.1", PortAssignment.unique())));
}
/*
* Creating peer.
*/
try {
File tmpDir = ClientBase.createTmpDir();
QuorumPeer peer = new QuorumPeer(peers, tmpDir, tmpDir, PortAssignment.unique(), 3, 0, 1000, 2, 2, 2);
MockFLE mock = new MockFLE(peer);
mock.start();
/*
* Lower epoch must return false
*/
assertFalse(mock.predicate(4L, 0L, 0L, 3L, 0L, 2L));
/*
* Later epoch
*/
assertTrue(mock.predicate(0L, 0L, 1L, 1L, 0L, 0L));
/*
* Higher zxid
*/
assertTrue(mock.predicate(0L, 1L, 0L, 1L, 0L, 0L));
/*
* Higher id
*/
assertTrue(mock.predicate(1L, 1L, 0L, 0L, 1L, 0L));
} catch (IOException e) {
LOG.error("Exception while creating quorum peer", e);
fail("Exception while creating quorum peer");
}
}
}
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