QueueReaderTest.java example

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.usergrid.persistence.qakka.distributed.actors;

import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import com.google.inject.Injector;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.usergrid.persistence.actorsystem.ActorSystemFig;
import org.apache.usergrid.persistence.actorsystem.GuiceActorProducer;
import org.apache.usergrid.persistence.qakka.AbstractTest;
import org.apache.usergrid.persistence.qakka.QakkaFig;
import org.apache.usergrid.persistence.qakka.core.QakkaUtils;
import org.apache.usergrid.persistence.qakka.core.impl.InMemoryQueue;
import org.apache.usergrid.persistence.qakka.distributed.DistributedQueueService;
import org.apache.usergrid.persistence.qakka.distributed.messages.QueueRefreshRequest;
import org.apache.usergrid.persistence.qakka.serialization.queuemessages.DatabaseQueueMessage;
import org.apache.usergrid.persistence.qakka.serialization.queuemessages.QueueMessageSerialization;
import org.apache.usergrid.persistence.qakka.serialization.sharding.Shard;
import org.apache.usergrid.persistence.qakka.serialization.sharding.ShardSerialization;
import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.UUID;


public class QueueReaderTest extends AbstractTest {
    private static final Logger logger = LoggerFactory.getLogger( QueueReaderTest.class );



    @Test
    public void testBasicOperation() throws Exception {

        Injector injector = getInjector();

        injector.getInstance( DistributedQueueService.class ); // init the INJECTOR

        QakkaFig qakkaFig = injector.getInstance( QakkaFig.class );
        ActorSystemFig actorSystemFig = injector.getInstance( ActorSystemFig.class );
        ShardSerialization shardSerialization = injector.getInstance( ShardSerialization.class );

        int numMessages = 200;
        // create queue messages, only first lot get queue message data

        QueueMessageSerialization serialization = injector.getInstance( QueueMessageSerialization.class );
        String queueName = "qrt_queue_" + RandomStringUtils.randomAlphanumeric( 10 );

        Shard newShard = new Shard( queueName, actorSystemFig.getRegionLocal(),
                Shard.Type.DEFAULT, 1L, QakkaUtils.getTimeUuid());
        shardSerialization.createShard( newShard );

        for ( int i=0; i<numMessages; i++ ) {

            UUID messageId = QakkaUtils.getTimeUuid();
            UUID queueMessageId = QakkaUtils.getTimeUuid();

            DatabaseQueueMessage message = new DatabaseQueueMessage(
                    messageId,
                    DatabaseQueueMessage.Type.DEFAULT,
                    queueName,
                    actorSystemFig.getRegionLocal(),
                    null,
                    System.currentTimeMillis(),
                    null,
                    queueMessageId);
            serialization.writeMessage( message );
        }

        InMemoryQueue inMemoryQueue = injector.getInstance( InMemoryQueue.class );
        Assert.assertEquals( 0, inMemoryQueue.size( queueName ) );

        // run the QueueRefresher to fill up the in-memory queue

        ActorSystem system = ActorSystem.create("Test-" + queueName);
        ActorRef queueReaderRef = system.actorOf(
            Props.create( GuiceActorProducer.class, QueueRefresher.class ), "queueReader");
        QueueRefreshRequest refreshRequest = new QueueRefreshRequest( queueName, false );

        // need to wait for refresh to complete
        int maxRetries = 30;
        int retries = 0;
        while ( inMemoryQueue.size( queueName ) < qakkaFig.getQueueInMemorySize() && retries++ < maxRetries ) {
            queueReaderRef.tell( refreshRequest, null ); // tell sends message, returns immediately
            Thread.sleep(1000);
        }

        Assert.assertEquals( numMessages, inMemoryQueue.size( queueName ) );
    }
}