MongoDbTests.java

/*
 * Copyright 2014-2017 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 org.springframework.integration.dsl.test.mongodb;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.util.Collections;
import java.util.Map;

import org.junit.Test;
import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
import org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration;
import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
import org.springframework.boot.autoconfigure.mongo.embedded.EmbeddedMongoAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.Converter;
import org.springframework.data.mongodb.MongoDbFactory;
import org.springframework.data.mongodb.config.EnableMongoAuditing;
import org.springframework.data.mongodb.core.convert.CustomConversions;
import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.annotation.MessagingGateway;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.dsl.Channels;
import org.springframework.integration.dsl.IntegrationFlow;
import org.springframework.integration.dsl.IntegrationFlowDefinition;
import org.springframework.integration.dsl.IntegrationFlows;
import org.springframework.integration.dsl.channel.MessageChannels;
import org.springframework.integration.dsl.core.Pollers;
import org.springframework.integration.mongodb.store.MongoDbChannelMessageStore;
import org.springframework.integration.store.PriorityCapableChannelMessageStore;
import org.springframework.integration.support.MessageBuilder;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.PollableChannel;
import org.springframework.messaging.support.GenericMessage;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.mongodb.DBObject;

/**
 * @author Artem Bilan
 */
@RunWith(SpringJUnit4ClassRunner.class)
@DirtiesContext
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE)
public class MongoDbTests {

	@Autowired
	private ControlBusGateway controlBus;

	@Autowired
	@Qualifier("priorityChannel")
	private MessageChannel priorityChannel;

	@Autowired
	@Qualifier("priorityReplyChannel")
	private PollableChannel priorityReplyChannel;


	@Test
	public void testPriority() throws InterruptedException {
		Message<String> message = MessageBuilder.withPayload("1").setPriority(1).build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("-1").setPriority(-1).build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("3").setPriority(3).build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("0").setPriority(0).build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("2").setPriority(2).build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("none").build();
		this.priorityChannel.send(message);

		message = MessageBuilder.withPayload("31").setPriority(3).build();
		this.priorityChannel.send(message);

		this.controlBus.send("@priorityChannelBridge.start()");

		Message<?> receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("3", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("31", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("2", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("1", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("0", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("-1", receive.getPayload());

		receive = this.priorityReplyChannel.receive(2000);
		assertNotNull(receive);
		assertEquals("none", receive.getPayload());

		this.controlBus.send("@priorityChannelBridge.stop()");
	}

	@MessagingGateway(defaultRequestChannel = "controlBus.input")
	private interface ControlBusGateway {

		void send(String command);
	}


	@Configuration
	@ImportAutoConfiguration({EmbeddedMongoAutoConfiguration.class, MongoAutoConfiguration.class, MongoDataAutoConfiguration.class})
	@EnableIntegration
	@IntegrationComponentScan
	@EnableMongoAuditing
	public static class ContextConfiguration {

		@Bean
		public CustomConversions customConversions() {
			return new CustomConversions(Collections.singletonList(new MessageReadConverter()));
		}

		@Bean
		public IntegrationFlow controlBus() {
			return IntegrationFlowDefinition::controlBus;
		}

		@Bean
		public MongoDbChannelMessageStore mongoDbChannelMessageStore(MongoDbFactory mongoDbFactory,
				MappingMongoConverter mappingMongoConverter) {
			MongoDbChannelMessageStore mongoDbChannelMessageStore =
					new MongoDbChannelMessageStore(mongoDbFactory, mappingMongoConverter);
			mongoDbChannelMessageStore.setPriorityEnabled(true);
			return mongoDbChannelMessageStore;
		}

		@Bean
		public IntegrationFlow priorityFlow(PriorityCapableChannelMessageStore mongoDbChannelMessageStore) {
			return IntegrationFlows.from((Channels c) ->
					c.priority("priorityChannel", mongoDbChannelMessageStore, "priorityGroup"))
					.bridge(s -> s.poller(Pollers.fixedDelay(100))
							.autoStartup(false)
							.id("priorityChannelBridge"))
					.channel(MessageChannels.queue("priorityReplyChannel"))
					.get();
		}

	}

	public static class MessageReadConverter implements Converter<DBObject, Message<?>> {

		@Override
		@SuppressWarnings("unchecked")
		public Message<?> convert(DBObject source) {
			return new GenericMessage<>(source.get("payload"), (Map<String, Object>) source.get("headers"));
		}

	}

}