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/*
 * Copyright 2012-2020 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
 *
 *      https://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.boot.autoconfigure.jms.artemis;

import java.util.List;
import java.util.stream.Collectors;

import org.apache.activemq.artemis.api.core.QueueConfiguration;
import org.apache.activemq.artemis.api.core.RoutingType;
import org.apache.activemq.artemis.core.config.CoreAddressConfiguration;
import org.apache.activemq.artemis.core.server.embedded.EmbeddedActiveMQ;
import org.apache.activemq.artemis.jms.server.config.JMSConfiguration;
import org.apache.activemq.artemis.jms.server.config.JMSQueueConfiguration;
import org.apache.activemq.artemis.jms.server.config.TopicConfiguration;
import org.apache.activemq.artemis.jms.server.config.impl.JMSConfigurationImpl;
import org.apache.activemq.artemis.jms.server.config.impl.JMSQueueConfigurationImpl;
import org.apache.activemq.artemis.jms.server.config.impl.TopicConfigurationImpl;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * Configuration used to create the embedded Artemis server.
 *
 * @author Eddú Meléndez
 * @author Phillip Webb
 * @author Stephane Nicoll
 */
@Configuration(proxyBeanMethods = false)
@ConditionalOnClass(EmbeddedActiveMQ.class)
@ConditionalOnProperty(prefix = "spring.artemis.embedded", name = "enabled", havingValue = "true",
		matchIfMissing = true)
class ArtemisEmbeddedServerConfiguration {

	private final ArtemisProperties properties;

	ArtemisEmbeddedServerConfiguration(ArtemisProperties properties) {
		this.properties = properties;
	}

	@Bean
	@ConditionalOnMissingBean
	org.apache.activemq.artemis.core.config.Configuration artemisConfiguration() {
		return new ArtemisEmbeddedConfigurationFactory(this.properties).createConfiguration();
	}

	@Bean(initMethod = "start", destroyMethod = "stop")
	@ConditionalOnMissingBean
	EmbeddedActiveMQ embeddedActiveMq(org.apache.activemq.artemis.core.config.Configuration configuration,
			JMSConfiguration jmsConfiguration, ObjectProvider configurationCustomizers)
			throws Exception {
		for (JMSQueueConfiguration queueConfiguration : jmsConfiguration.getQueueConfigurations()) {
			String queueName = queueConfiguration.getName();
			configuration.addAddressConfiguration(
					new CoreAddressConfiguration().setName(queueName).addRoutingType(RoutingType.ANYCAST)
							.addQueueConfiguration(new QueueConfiguration(queueName).setAddress(queueName)
									.setFilterString(queueConfiguration.getSelector())
									.setDurable(queueConfiguration.isDurable()).setRoutingType(RoutingType.ANYCAST)));
		}
		for (TopicConfiguration topicConfiguration : jmsConfiguration.getTopicConfigurations()) {
			configuration.addAddressConfiguration(new CoreAddressConfiguration().setName(topicConfiguration.getName())
					.addRoutingType(RoutingType.MULTICAST));
		}
		configurationCustomizers.orderedStream().forEach((customizer) -> customizer.customize(configuration));
		EmbeddedActiveMQ embeddedActiveMq = new EmbeddedActiveMQ();
		embeddedActiveMq.setConfiguration(configuration);
		return embeddedActiveMq;
	}

	@Bean
	@ConditionalOnMissingBean
	JMSConfiguration artemisJmsConfiguration(ObjectProvider queuesConfiguration,
			ObjectProvider topicsConfiguration) {
		JMSConfiguration configuration = new JMSConfigurationImpl();
		addAll(configuration.getQueueConfigurations(), queuesConfiguration);
		addAll(configuration.getTopicConfigurations(), topicsConfiguration);
		addQueues(configuration, this.properties.getEmbedded().getQueues());
		addTopics(configuration, this.properties.getEmbedded().getTopics());
		return configuration;
	}

	private  void addAll(List list, ObjectProvider items) {
		if (items != null) {
			list.addAll(items.orderedStream().collect(Collectors.toList()));
		}
	}

	private void addQueues(JMSConfiguration configuration, String[] queues) {
		boolean persistent = this.properties.getEmbedded().isPersistent();
		for (String queue : queues) {
			JMSQueueConfigurationImpl jmsQueueConfiguration = new JMSQueueConfigurationImpl();
			jmsQueueConfiguration.setName(queue);
			jmsQueueConfiguration.setDurable(persistent);
			jmsQueueConfiguration.setBindings("/queue/" + queue);
			configuration.getQueueConfigurations().add(jmsQueueConfiguration);
		}
	}

	private void addTopics(JMSConfiguration configuration, String[] topics) {
		for (String topic : topics) {
			TopicConfigurationImpl topicConfiguration = new TopicConfigurationImpl();
			topicConfiguration.setName(topic);
			topicConfiguration.setBindings("/topic/" + topic);
			configuration.getTopicConfigurations().add(topicConfiguration);
		}
	}

}