messaging/src/test/java/org/apache/falcon/messaging/FeedProducerTest.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.falcon.messaging;

import java.io.InputStream;
import java.io.OutputStream;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MapMessage;
import javax.jms.MessageConsumer;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.util.ByteArrayInputStream;
import org.apache.falcon.cluster.util.EmbeddedCluster;
import org.apache.falcon.workflow.WorkflowExecutionArgs;
import org.apache.falcon.workflow.WorkflowExecutionContext;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IOUtils;
import org.testng.Assert;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

/**
 * Test for feed message producer.
 */
public class FeedProducerTest {

    private String[] args;
    private static final String BROKER_URL = "vm://localhost?broker.useJmx=false&broker.persistent=true";
    private static final String BROKER_IMPL_CLASS = "org.apache.activemq.ActiveMQConnectionFactory";
    private static final String TOPIC_NAME = "Falcon.process1.click-logs";
    private BrokerService broker;

    private Path logFile;

    private volatile AssertionError error;
    private EmbeddedCluster dfsCluster;
    private Configuration conf;

    @BeforeClass
    public void setup() throws Exception {

        this.dfsCluster = EmbeddedCluster.newCluster("testCluster");
        conf = dfsCluster.getConf();
        logFile = new Path(conf.get("fs.default.name"),
                "/falcon/feed/agg-logs/instance-2012-01-01-10-00.csv");

        args = new String[] {
            "-" + WorkflowExecutionArgs.ENTITY_NAME.getName(), TOPIC_NAME,
            "-" + WorkflowExecutionArgs.FEED_NAMES.getName(), "click-logs",
            "-" + WorkflowExecutionArgs.FEED_INSTANCE_PATHS.getName(),
            "/click-logs/10/05/05/00/20",
            "-" + WorkflowExecutionArgs.WORKFLOW_ID.getName(), "workflow-01-00",
            "-" + WorkflowExecutionArgs.WORKFLOW_USER.getName(), "falcon",
            "-" + WorkflowExecutionArgs.RUN_ID.getName(), "1",
            "-" + WorkflowExecutionArgs.NOMINAL_TIME.getName(), "2011-01-01-01-00",
            "-" + WorkflowExecutionArgs.TIMESTAMP.getName(), "2012-01-01-01-00",
            "-" + WorkflowExecutionArgs.BRKR_URL.getName(), BROKER_URL,
            "-" + WorkflowExecutionArgs.BRKR_IMPL_CLASS.getName(), BROKER_IMPL_CLASS,
            "-" + WorkflowExecutionArgs.USER_BRKR_URL.getName(), BROKER_URL,
            "-" + WorkflowExecutionArgs.USER_BRKR_IMPL_CLASS.getName(), BROKER_IMPL_CLASS,
            "-" + WorkflowExecutionArgs.ENTITY_TYPE.getName(), "FEED",
            "-" + WorkflowExecutionArgs.OPERATION.getName(), "DELETE",
            "-" + WorkflowExecutionArgs.LOG_FILE.getName(), logFile.toString(),
            "-" + WorkflowExecutionArgs.LOG_DIR.getName(), "/falcon/feed/agg-logs/",
            "-" + WorkflowExecutionArgs.TOPIC_NAME.getName(), TOPIC_NAME,
            "-" + WorkflowExecutionArgs.STATUS.getName(), "SUCCEEDED",
            "-" + WorkflowExecutionArgs.BRKR_TTL.getName(), "10",
            "-" + WorkflowExecutionArgs.CLUSTER_NAME.getName(), "corp",
        };

        broker = new BrokerService();
        broker.addConnector(BROKER_URL);
        broker.setDataDirectory("target/activemq");
        broker.start();
    }

    @AfterClass
    public void tearDown() throws Exception {
        broker.deleteAllMessages();
        broker.stop();
        this.dfsCluster.shutdown();
    }

    @Test
    public void testLogFile() throws Exception {
        FileSystem fs = dfsCluster.getFileSystem();
        OutputStream out = fs.create(logFile);
        InputStream in = new ByteArrayInputStream(
                ("instancePaths=/falcon/feed/agg-logs/path1/2010/10/10/20,"
                        + "/falcon/feed/agg-logs/path1/2010/10/10/21,"
                        + "/falcon/feed/agg-logs/path1/2010/10/10/22,"
                        + "/falcon/feed/agg-logs/path1/2010/10/10/23")
                        .getBytes());
        IOUtils.copyBytes(in, out, conf);
        testProcessMessageCreator();
    }

    @Test
    public void testEmptyLogFile() throws Exception {
        FileSystem fs = dfsCluster.getFileSystem();
        OutputStream out = fs.create(logFile);
        InputStream in = new ByteArrayInputStream(("instancePaths=").getBytes());
        IOUtils.copyBytes(in, out, conf);

        WorkflowExecutionContext context = WorkflowExecutionContext.create(
                args, WorkflowExecutionContext.Type.POST_PROCESSING);
        JMSMessageProducer jmsMessageProducer = JMSMessageProducer.builder(context)
                .type(JMSMessageProducer.MessageType.USER).build();
        jmsMessageProducer.sendMessage();
    }

    private void testProcessMessageCreator() throws Exception {

        Thread t = new Thread() {
            @Override
            public void run() {
                try {
                    consumer();
                } catch (AssertionError e) {
                    error = e;
                } catch (JMSException ignore) {
                    error = null;
                }
            }
        };
        t.start();
        Thread.sleep(100);

        WorkflowExecutionContext context = WorkflowExecutionContext.create(
                args, WorkflowExecutionContext.Type.POST_PROCESSING);
        JMSMessageProducer jmsMessageProducer = JMSMessageProducer.builder(context)
                .type(JMSMessageProducer.MessageType.USER).build();
        jmsMessageProducer.sendMessage();

        t.join();
        if (error != null) {
            throw error;
        }
    }

    private void consumer() throws JMSException {
        ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(BROKER_URL);
        Connection connection = connectionFactory.createConnection();
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Destination destination = session.createTopic(TOPIC_NAME);
        MessageConsumer consumer = session.createConsumer(destination);

        // wait till you get atleast one message
        MapMessage m;
        for (m = null; m == null;) {
            m = (MapMessage) consumer.receive();
        }
        System.out.println("Consumed: " + m.toString());
        assertMessage(m);
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.FEED_INSTANCE_PATHS.getName()),
                "/falcon/feed/agg-logs/path1/2010/10/10/20");

        for (m = null; m == null;) {
            m = (MapMessage) consumer.receive();
        }
        System.out.println("Consumed: " + m.toString());
        assertMessage(m);
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.FEED_INSTANCE_PATHS.getName()),
                "/falcon/feed/agg-logs/path1/2010/10/10/21");

        for (m = null; m == null;) {
            m = (MapMessage) consumer.receive();
        }
        System.out.println("Consumed: " + m.toString());
        assertMessage(m);
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.FEED_INSTANCE_PATHS.getName()),
                "/falcon/feed/agg-logs/path1/2010/10/10/22");

        for (m = null; m == null;) {
            m = (MapMessage) consumer.receive();
        }
        System.out.println("Consumed: " + m.toString());
        assertMessage(m);
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.FEED_INSTANCE_PATHS.getName()),
                "/falcon/feed/agg-logs/path1/2010/10/10/23");

        connection.close();
    }

    private void assertMessage(MapMessage m) throws JMSException {
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.ENTITY_NAME.getName()),
                TOPIC_NAME);
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.OPERATION.getName()), "DELETE");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.WORKFLOW_ID.getName()),
                "workflow-01-00");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.WORKFLOW_USER.getName()),
                "falcon");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.RUN_ID.getName()), "1");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.NOMINAL_TIME.getName()),
                "2011-01-01-01-00");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.TIMESTAMP.getName()),
                "2012-01-01-01-00");
        Assert.assertEquals(m.getString(WorkflowExecutionArgs.STATUS.getName()), "SUCCEEDED");
    }
}