src/test/org/apache/hcatalog/listener/TestMsgBusConnection.java

/**
 * 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.hcatalog.listener;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.ObjectMessage;
import javax.jms.Session;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.hadoop.hive.cli.CliSessionState;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.conf.HiveConf.ConfVars;
import org.apache.hadoop.hive.metastore.api.AlreadyExistsException;
import org.apache.hadoop.hive.metastore.api.Database;
import org.apache.hadoop.hive.metastore.api.NoSuchObjectException;
import org.apache.hadoop.hive.ql.Driver;
import org.apache.hadoop.hive.ql.session.SessionState;
import org.apache.hcatalog.common.HCatConstants;

public class TestMsgBusConnection extends TestCase {

    private Driver driver;
    private BrokerService broker;
    private MessageConsumer consumer;

    @Override
    protected void setUp() throws Exception {

        super.setUp();
        broker = new BrokerService();
        // configure the broker
        broker.addConnector("tcp://localhost:61616?broker.persistent=false");

        broker.start();

        System.setProperty("java.naming.factory.initial",
                "org.apache.activemq.jndi.ActiveMQInitialContextFactory");
        System.setProperty("java.naming.provider.url", "tcp://localhost:61616");
        connectClient();
        HiveConf hiveConf = new HiveConf(this.getClass());
        hiveConf.set(ConfVars.METASTORE_EVENT_LISTENERS.varname,
                NotificationListener.class.getName());
        hiveConf.set("hive.metastore.local", "true");
        hiveConf.set(HiveConf.ConfVars.PREEXECHOOKS.varname, "");
        hiveConf.set(HiveConf.ConfVars.POSTEXECHOOKS.varname, "");
        hiveConf.set(HiveConf.ConfVars.HIVE_SUPPORT_CONCURRENCY.varname, "false");
        hiveConf.set(HCatConstants.HCAT_MSGBUS_TOPIC_PREFIX, "planetlab.hcat");
        SessionState.start(new CliSessionState(hiveConf));
        driver = new Driver(hiveConf);
    }

    private void connectClient() throws JMSException {
        ConnectionFactory connFac = new ActiveMQConnectionFactory(
                "tcp://localhost:61616");
        Connection conn = connFac.createConnection();
        conn.start();
        Session session = conn.createSession(true, Session.SESSION_TRANSACTED);
        Destination hcatTopic = session.createTopic("planetlab.hcat");
        consumer = session.createConsumer(hcatTopic);
    }

    public void testConnection() throws Exception {

        try {
            driver.run("create database testconndb");
            Message msg = consumer.receive();
            assertEquals(HCatConstants.HCAT_ADD_DATABASE_EVENT,
                    msg.getStringProperty(HCatConstants.HCAT_EVENT));
            assertEquals("topic://planetlab.hcat", msg.getJMSDestination().toString());
            assertEquals("testconndb",
                    ((Database) ((ObjectMessage) msg).getObject()).getName());
            broker.stop();
            driver.run("drop database testconndb cascade");
            broker.start(true);
            connectClient();
            driver.run("create database testconndb");
            msg = consumer.receive();
            assertEquals(HCatConstants.HCAT_ADD_DATABASE_EVENT,
                    msg.getStringProperty(HCatConstants.HCAT_EVENT));
            assertEquals("topic://planetlab.hcat", msg.getJMSDestination().toString());
            assertEquals("testconndb",
                    ((Database) ((ObjectMessage) msg).getObject()).getName());
            driver.run("drop database testconndb cascade");
            msg = consumer.receive();
            assertEquals(HCatConstants.HCAT_DROP_DATABASE_EVENT,
                    msg.getStringProperty(HCatConstants.HCAT_EVENT));
            assertEquals("topic://planetlab.hcat", msg.getJMSDestination().toString());
            assertEquals("testconndb",
                    ((Database) ((ObjectMessage) msg).getObject()).getName());
        } catch (NoSuchObjectException nsoe) {
            nsoe.printStackTrace(System.err);
            assert false;
        } catch (AlreadyExistsException aee) {
            aee.printStackTrace(System.err);
            assert false;
        }
    }
}