/**
* (c) Copyright 2014 WibiData, Inc.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
*
* 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 org.kiji.schema.layout.impl;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
import com.google.common.collect.ImmutableSetMultimap;
import com.google.common.collect.Multimap;
import com.google.common.collect.Queues;
import org.apache.curator.framework.CuratorFramework;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.kiji.schema.Kiji;
import org.kiji.schema.KijiClientTest;
import org.kiji.schema.KijiURI;
import org.kiji.schema.avro.TableLayoutDesc;
import org.kiji.schema.layout.KijiTableLayouts;
import org.kiji.schema.zookeeper.TestUsersTracker.QueueingUsersUpdateHandler;
import org.kiji.schema.zookeeper.UsersTracker;
import org.kiji.schema.zookeeper.ZooKeeperUtils;
public class TestInstanceMonitor extends KijiClientTest {
private volatile KijiURI mTableURI;
private volatile CuratorFramework mZKClient;
private volatile InstanceMonitor mInstanceMonitor;
@Before
public void setUpTestInstanceMonitor() throws Exception {
Kiji kiji = getKiji();
TableLayoutDesc layout = KijiTableLayouts.getLayout(KijiTableLayouts.SIMPLE);
kiji.createTable(layout);
mTableURI = KijiURI.newBuilder(kiji.getURI()).withTableName(layout.getName()).build();
mZKClient = ZooKeeperUtils.getZooKeeperClient(mTableURI);
mInstanceMonitor = new InstanceMonitor(
kiji.getSystemTable().getDataVersion(),
kiji.getURI(),
kiji.getSchemaTable(),
kiji.getMetaTable(),
mZKClient).start();
}
@After
public void tearDownTestInstanceMonitor() throws Exception {
mInstanceMonitor.close();
mZKClient.close();
}
@Test
public void testCanRetrieveTableMonitor() throws Exception {
TableLayoutMonitor monitor = mInstanceMonitor.getTableLayoutMonitor(mTableURI.getTable());
Assert.assertEquals("layout-1.0", monitor.getLayout().getDesc().getVersion());
}
@Test(expected = IllegalStateException.class)
public void testClosingInstanceMonitorWillCloseTableLayoutMonitor() throws Exception {
TableLayoutMonitor monitor = mInstanceMonitor.getTableLayoutMonitor(mTableURI.getTable());
mInstanceMonitor.close();
monitor.getLayout();
}
@Test
public void testReleasingTableLayoutMonitorWillCloseIt() throws Exception {
TableLayoutMonitor monitor1 = mInstanceMonitor.getTableLayoutMonitor(mTableURI.getTable());
monitor1.close();
TableLayoutMonitor monitor2 = mInstanceMonitor.getTableLayoutMonitor(mTableURI.getTable());
Assert.assertTrue(monitor1 != monitor2);
}
@Test
public void testReleasingTableLayoutMonitorWillUpdateZooKeeper() throws Exception {
final BlockingQueue<Multimap<String, String>> usersQueue = Queues.newSynchronousQueue();
final UsersTracker tracker =
ZooKeeperUtils
.newTableUsersTracker(mZKClient, mTableURI)
.registerUpdateHandler(new QueueingUsersUpdateHandler(usersQueue));
try {
tracker.start();
Assert.assertEquals(ImmutableSetMultimap.<String, String>of(),
usersQueue.poll(1, TimeUnit.SECONDS));
mInstanceMonitor.getTableLayoutMonitor(mTableURI.getTable());
Multimap<String, String> registeredUsers = usersQueue.poll(1, TimeUnit.SECONDS);
Assert.assertEquals(1, registeredUsers.size());
Assert.assertTrue(registeredUsers.containsValue("1"));
mInstanceMonitor.close();
Assert.assertEquals(ImmutableSetMultimap.<String, String>of(),
usersQueue.poll(1, TimeUnit.SECONDS));
} finally {
tracker.close();
}
}
}