/**
* Copyright 2008 the original author or authors.
*
* 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.
*/
package net.sf.katta.operation.master;
import static org.junit.Assert.assertEquals;
import java.util.List;
import net.sf.katta.node.Node;
import net.sf.katta.protocol.MasterQueue;
import net.sf.katta.protocol.NodeQueue;
import net.sf.katta.protocol.metadata.IndexMetaData;
import net.sf.katta.testutil.Mocks;
import org.junit.Test;
public class CheckIndicesOperationTest extends AbstractMasterNodeZkTest {
@Test
public void testBalanceUnderreplicatedIndex() throws Exception {
MasterQueue masterQueue = Mocks.publishMaster(_protocol);
// add nodes and index
List<Node> nodes = Mocks.mockNodes(2);
List<NodeQueue> nodeQueues = Mocks.publisNodes(_protocol, nodes);
deployIndex(nodes, nodeQueues);
assertEquals(0, masterQueue.size());
// balance the index does not change anything
CheckIndicesOperation checkOperation = new CheckIndicesOperation();
checkOperation.execute(_context, EMPTY_LIST);
assertEquals(0, masterQueue.size());
// add node and then balance again
Node node3 = Mocks.mockNode();
Mocks.publisNode(_protocol, node3);
checkOperation.execute(_context, EMPTY_LIST);
assertEquals(1, masterQueue.size());
}
@Test
public void testBalanceOverreplicatedIndex() throws Exception {
MasterQueue masterQueue = Mocks.publishMaster(_protocol);
// add nodes and index
List<Node> nodes = Mocks.mockNodes(3);
List<NodeQueue> nodeQueues = Mocks.publisNodes(_protocol, nodes);
deployIndex(nodes, nodeQueues);
assertEquals(0, masterQueue.size());
// balance the index does not change anything
CheckIndicesOperation balanceOperation = new CheckIndicesOperation();
balanceOperation.execute(_context, EMPTY_LIST);
assertEquals(0, masterQueue.size());
// decrease the replication count and then balance again
IndexMetaData indexMD = _protocol.getIndexMD(_indexName);
indexMD.setReplicationLevel(2);
_protocol.updateIndexMD(indexMD);
balanceOperation.execute(_context, EMPTY_LIST);
assertEquals(1, masterQueue.size());
}
}