Merge pull request #9055 from garyrussell:GH-9041

* pr/9055:
  Remove deprecated spring.rabbitmq.listener.* properties
  Polish "Support direct AMQP container"
  Support direct AMQP container

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/AbstractRabbitListenerContainerFactoryConfigurer.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright 2012-2017 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.boot.autoconfigure.amqp;
+
+import org.springframework.amqp.rabbit.config.AbstractRabbitListenerContainerFactory;
+import org.springframework.amqp.rabbit.config.RetryInterceptorBuilder;
+import org.springframework.amqp.rabbit.connection.ConnectionFactory;
+import org.springframework.amqp.rabbit.listener.RabbitListenerContainerFactory;
+import org.springframework.amqp.rabbit.retry.MessageRecoverer;
+import org.springframework.amqp.rabbit.retry.RejectAndDontRequeueRecoverer;
+import org.springframework.amqp.support.converter.MessageConverter;
+import org.springframework.boot.autoconfigure.amqp.RabbitProperties.ListenerRetry;
+import org.springframework.util.Assert;
+
+/**
+ * Configure {@link RabbitListenerContainerFactory} with sensible defaults.
+ *
+ * @param <T> the container factory type.
+ * @author Gary Russell
+ * @author Stephane Nicoll
+ * @since 2.0.0
+ */
+public abstract class AbstractRabbitListenerContainerFactoryConfigurer<
+		T extends AbstractRabbitListenerContainerFactory<?>> {
+
+	private MessageConverter messageConverter;
+
+	private MessageRecoverer messageRecoverer;
+
+	private RabbitProperties rabbitProperties;
+
+	/**
+	 * Set the {@link MessageConverter} to use or {@code null} if the out-of-the-box
+	 * converter should be used.
+	 * @param messageConverter the {@link MessageConverter}
+	 */
+	protected void setMessageConverter(MessageConverter messageConverter) {
+		this.messageConverter = messageConverter;
+	}
+
+	/**
+	 * Set the {@link MessageRecoverer} to use or {@code null} to rely on the default.
+	 * @param messageRecoverer the {@link MessageRecoverer}
+	 */
+	protected void setMessageRecoverer(MessageRecoverer messageRecoverer) {
+		this.messageRecoverer = messageRecoverer;
+	}
+
+	/**
+	 * Set the {@link RabbitProperties} to use.
+	 * @param rabbitProperties the {@link RabbitProperties}
+	 */
+	protected void setRabbitProperties(RabbitProperties rabbitProperties) {
+		this.rabbitProperties = rabbitProperties;
+	}
+
+	protected final RabbitProperties getRabbitProperties() {
+		return this.rabbitProperties;
+	}
+
+	/**
+	 * Configure the specified rabbit listener container factory. The factory can be
+	 * further tuned and default settings can be overridden.
+	 * @param factory the {@link AbstractRabbitListenerContainerFactory} instance to
+	 * configure
+	 * @param connectionFactory the {@link ConnectionFactory} to use
+	 */
+	public abstract void configure(T factory, ConnectionFactory connectionFactory);
+
+
+	protected void configure(T factory, ConnectionFactory connectionFactory,
+			RabbitProperties.AmqpContainer configuration) {
+		Assert.notNull(factory, "Factory must not be null");
+		Assert.notNull(connectionFactory, "ConnectionFactory must not be null");
+		Assert.notNull(configuration, "Configuration must not be null");
+		factory.setConnectionFactory(connectionFactory);
+		if (this.messageConverter != null) {
+			factory.setMessageConverter(this.messageConverter);
+		}
+		factory.setAutoStartup(configuration.isAutoStartup());
+		if (configuration.getAcknowledgeMode() != null) {
+			factory.setAcknowledgeMode(configuration.getAcknowledgeMode());
+		}
+		if (configuration.getPrefetch() != null) {
+			factory.setPrefetchCount(configuration.getPrefetch());
+		}
+		if (configuration.getDefaultRequeueRejected() != null) {
+			factory.setDefaultRequeueRejected(configuration.getDefaultRequeueRejected());
+		}
+		if (configuration.getIdleEventInterval() != null) {
+			factory.setIdleEventInterval(configuration.getIdleEventInterval());
+		}
+		ListenerRetry retryConfig = configuration.getRetry();
+		if (retryConfig.isEnabled()) {
+			RetryInterceptorBuilder<?> builder = (retryConfig.isStateless()
+					? RetryInterceptorBuilder.stateless()
+					: RetryInterceptorBuilder.stateful());
+			builder.maxAttempts(retryConfig.getMaxAttempts());
+			builder.backOffOptions(retryConfig.getInitialInterval(),
+					retryConfig.getMultiplier(), retryConfig.getMaxInterval());
+			MessageRecoverer recoverer = (this.messageRecoverer != null
+					? this.messageRecoverer : new RejectAndDontRequeueRecoverer());
+			builder.recoverer(recoverer);
+			factory.setAdviceChain(builder.build());
+		}
+	}
+
+}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/DirectRabbitListenerContainerFactoryConfigurer.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2012-2017 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.boot.autoconfigure.amqp;
+
+import org.springframework.amqp.rabbit.config.DirectRabbitListenerContainerFactory;
+import org.springframework.amqp.rabbit.connection.ConnectionFactory;
+
+/**
+ * Configure {@link DirectRabbitListenerContainerFactoryConfigurer} with sensible defaults.
+ *
+ * @author Gary Russell
+ * @author Stephane Nicoll
+ * @since 2.0
+ */
+public final class DirectRabbitListenerContainerFactoryConfigurer
+		extends AbstractRabbitListenerContainerFactoryConfigurer<DirectRabbitListenerContainerFactory> {
+
+	@Override
+	public void configure(DirectRabbitListenerContainerFactory factory, ConnectionFactory connectionFactory) {
+		RabbitProperties.DirectContainer config = getRabbitProperties().getListener()
+				.getDirect();
+		configure(factory, connectionFactory, config);
+		if (config.getConsumersPerQueue() != null) {
+			factory.setConsumersPerQueue(config.getConsumersPerQueue());
+		}
+	}
+
+}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitAnnotationDrivenConfiguration.java

@@ -17,6 +17,7 @@
 package org.springframework.boot.autoconfigure.amqp;
 
 import org.springframework.amqp.rabbit.annotation.EnableRabbit;
+import org.springframework.amqp.rabbit.config.DirectRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.config.RabbitListenerConfigUtils;
 import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.connection.ConnectionFactory;
@@ -25,6 +26,7 @@ import org.springframework.amqp.support.converter.MessageConverter;
 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;
 
@@ -55,7 +57,7 @@ class RabbitAnnotationDrivenConfiguration {
 
 	@Bean
 	@ConditionalOnMissingBean
-	public SimpleRabbitListenerContainerFactoryConfigurer rabbitListenerContainerFactoryConfigurer() {
+	public SimpleRabbitListenerContainerFactoryConfigurer simpleRabbitListenerContainerFactoryConfigurer() {
 		SimpleRabbitListenerContainerFactoryConfigurer configurer = new SimpleRabbitListenerContainerFactoryConfigurer();
 		configurer.setMessageConverter(this.messageConverter.getIfUnique());
 		configurer.setMessageRecoverer(this.messageRecoverer.getIfUnique());
@@ -63,9 +65,10 @@ class RabbitAnnotationDrivenConfiguration {
 		return configurer;
 	}
 
-	@Bean
+	@Bean(name = "rabbitListenerContainerFactory")
 	@ConditionalOnMissingBean(name = "rabbitListenerContainerFactory")
-	public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory(
+	@ConditionalOnProperty(prefix = "spring.rabbitmq.listener", name = "type", havingValue = "simple", matchIfMissing = true)
+	public SimpleRabbitListenerContainerFactory simpleRabbitListenerContainerFactory(
 			SimpleRabbitListenerContainerFactoryConfigurer configurer,
 			ConnectionFactory connectionFactory) {
 		SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
@@ -73,6 +76,29 @@ class RabbitAnnotationDrivenConfiguration {
 		return factory;
 	}
 
+
+	@Bean
+	@ConditionalOnMissingBean
+	public DirectRabbitListenerContainerFactoryConfigurer directRabbitListenerContainerFactoryConfigurer() {
+		DirectRabbitListenerContainerFactoryConfigurer configurer =
+				new DirectRabbitListenerContainerFactoryConfigurer();
+		configurer.setMessageConverter(this.messageConverter.getIfUnique());
+		configurer.setMessageRecoverer(this.messageRecoverer.getIfUnique());
+		configurer.setRabbitProperties(this.properties);
+		return configurer;
+	}
+
+	@Bean(name = "rabbitListenerContainerFactory")
+	@ConditionalOnMissingBean(name = "rabbitListenerContainerFactory")
+	@ConditionalOnProperty(prefix = "spring.rabbitmq.listener", name = "type", havingValue = "direct")
+	public DirectRabbitListenerContainerFactory directRabbitListenerContainerFactory(
+			DirectRabbitListenerContainerFactoryConfigurer configurer,
+			ConnectionFactory connectionFactory) {
+		DirectRabbitListenerContainerFactory factory = new DirectRabbitListenerContainerFactory();
+		configurer.configure(factory, connectionFactory);
+		return factory;
+	}
+
 	@EnableRabbit
 	@ConditionalOnMissingBean(name = RabbitListenerConfigUtils.RABBIT_LISTENER_ANNOTATION_PROCESSOR_BEAN_NAME)
 	protected static class EnableRabbitConfiguration {

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/RabbitProperties.java

@@ -22,7 +22,6 @@ import java.util.List;
 import org.springframework.amqp.core.AcknowledgeMode;
 import org.springframework.amqp.rabbit.connection.CachingConnectionFactory.CacheMode;
 import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.boot.context.properties.DeprecatedConfigurationProperty;
 import org.springframework.boot.context.properties.NestedConfigurationProperty;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.StringUtils;
@@ -465,112 +464,54 @@ public class RabbitProperties {
 
 	}
 
-	public static class Listener {
-
-		@NestedConfigurationProperty
-		private final AmqpContainer simple = new AmqpContainer();
-
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.auto-startup")
-		@Deprecated
-		public boolean isAutoStartup() {
-			return getSimple().isAutoStartup();
-		}
-
-		@Deprecated
-		public void setAutoStartup(boolean autoStartup) {
-			getSimple().setAutoStartup(autoStartup);
-		}
-
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.acknowledge-mode")
-		@Deprecated
-		public AcknowledgeMode getAcknowledgeMode() {
-			return getSimple().getAcknowledgeMode();
-		}
-
-		@Deprecated
-		public void setAcknowledgeMode(AcknowledgeMode acknowledgeMode) {
-			getSimple().setAcknowledgeMode(acknowledgeMode);
-		}
-
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.concurrency")
-		@Deprecated
-		public Integer getConcurrency() {
-			return getSimple().getConcurrency();
-		}
+	public enum ContainerType {
 
-		@Deprecated
-		public void setConcurrency(Integer concurrency) {
-			getSimple().setConcurrency(concurrency);
-		}
-
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.max-concurrency")
-		@Deprecated
-		public Integer getMaxConcurrency() {
-			return getSimple().getMaxConcurrency();
-		}
-
-		@Deprecated
-		public void setMaxConcurrency(Integer maxConcurrency) {
-			getSimple().setMaxConcurrency(maxConcurrency);
-		}
+		/**
+		 * Legacy container where the RabbitMQ consumer dispatches messages to an
+		 * invoker thread.
+		 */
+		SIMPLE,
 
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.prefetch")
-		@Deprecated
-		public Integer getPrefetch() {
-			return getSimple().getPrefetch();
-		}
+		/**
+		 * Container where the listener is invoked directly on the RabbitMQ consumer
+		 * thread.
+		 */
+		DIRECT
 
-		@Deprecated
-		public void setPrefetch(Integer prefetch) {
-			getSimple().setPrefetch(prefetch);
-		}
+	}
 
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.transaction-size")
-		@Deprecated
-		public Integer getTransactionSize() {
-			return getSimple().getTransactionSize();
-		}
+	public static class Listener {
 
-		@Deprecated
-		public void setTransactionSize(Integer transactionSize) {
-			getSimple().setTransactionSize(transactionSize);
-		}
+		/**
+		 * Listener container type.
+		 */
+		private ContainerType type = ContainerType.SIMPLE;
 
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.default-requeue-rejected")
-		@Deprecated
-		public Boolean getDefaultRequeueRejected() {
-			return getSimple().getDefaultRequeueRejected();
-		}
+		@NestedConfigurationProperty
+		private final SimpleContainer simple = new SimpleContainer();
 
-		@Deprecated
-		public void setDefaultRequeueRejected(Boolean defaultRequeueRejected) {
-			getSimple().setDefaultRequeueRejected(defaultRequeueRejected);
-		}
+		@NestedConfigurationProperty
+		private final DirectContainer direct = new DirectContainer();
 
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.idle-event-interval")
-		@Deprecated
-		public Long getIdleEventInterval() {
-			return getSimple().getIdleEventInterval();
+		public ContainerType getType() {
+			return this.type;
 		}
 
-		@Deprecated
-		public void setIdleEventInterval(Long idleEventInterval) {
-			getSimple().setIdleEventInterval(idleEventInterval);
+		public void setType(ContainerType containerType) {
+			this.type = containerType;
 		}
 
-		@DeprecatedConfigurationProperty(replacement = "spring.rabbitmq.listener.simple.retry")
-		@Deprecated
-		public ListenerRetry getRetry() {
-			return getSimple().getRetry();
+		public SimpleContainer getSimple() {
+			return this.simple;
 		}
 
-		public AmqpContainer getSimple() {
-			return this.simple;
+		public DirectContainer getDirect() {
+			return this.direct;
 		}
 
 	}
 
-	public static class AmqpContainer {
+	public static abstract class AmqpContainer {
 
 		/**
 		 * Start the container automatically on startup.
@@ -582,28 +523,12 @@ public class RabbitProperties {
 		 */
 		private AcknowledgeMode acknowledgeMode;
 
-		/**
-		 * Minimum number of consumers.
-		 */
-		private Integer concurrency;
-
-		/**
-		 * Maximum number of consumers.
-		 */
-		private Integer maxConcurrency;
-
 		/**
 		 * Number of messages to be handled in a single request. It should be greater than
 		 * or equal to the transaction size (if used).
 		 */
 		private Integer prefetch;
 
-		/**
-		 * Number of messages to be processed in a transaction. For best results it should
-		 * be less than or equal to the prefetch count.
-		 */
-		private Integer transactionSize;
-
 		/**
 		 * Whether rejected deliveries are requeued by default; default true.
 		 */
@@ -636,6 +561,58 @@ public class RabbitProperties {
 			this.acknowledgeMode = acknowledgeMode;
 		}
 
+		public Integer getPrefetch() {
+			return this.prefetch;
+		}
+
+		public void setPrefetch(Integer prefetch) {
+			this.prefetch = prefetch;
+		}
+
+		public Boolean getDefaultRequeueRejected() {
+			return this.defaultRequeueRejected;
+		}
+
+		public void setDefaultRequeueRejected(Boolean defaultRequeueRejected) {
+			this.defaultRequeueRejected = defaultRequeueRejected;
+		}
+
+		public Long getIdleEventInterval() {
+			return this.idleEventInterval;
+		}
+
+		public void setIdleEventInterval(Long idleEventInterval) {
+			this.idleEventInterval = idleEventInterval;
+		}
+
+		public ListenerRetry getRetry() {
+			return this.retry;
+		}
+
+	}
+
+	/**
+	 * Configuration properties for {@code SimpleMessageListenerContainer}.
+	 */
+	public static class SimpleContainer extends AmqpContainer {
+
+		/**
+		 * Minimum number of listener invoker threads.
+		 */
+		private Integer concurrency;
+
+		/**
+		 * Maximum number of listener invoker threads.
+		 */
+		private Integer maxConcurrency;
+
+		/**
+		 * Number of messages to be processed in a transaction; number of messages
+		 * between acks. For best results it should
+		 * be less than or equal to the prefetch count.
+		 */
+		private Integer transactionSize;
+
 		public Integer getConcurrency() {
 			return this.concurrency;
 		}
@@ -652,14 +629,6 @@ public class RabbitProperties {
 			this.maxConcurrency = maxConcurrency;
 		}
 
-		public Integer getPrefetch() {
-			return this.prefetch;
-		}
-
-		public void setPrefetch(Integer prefetch) {
-			this.prefetch = prefetch;
-		}
-
 		public Integer getTransactionSize() {
 			return this.transactionSize;
 		}
@@ -668,24 +637,24 @@ public class RabbitProperties {
 			this.transactionSize = transactionSize;
 		}
 
-		public Boolean getDefaultRequeueRejected() {
-			return this.defaultRequeueRejected;
-		}
+	}
 
-		public void setDefaultRequeueRejected(Boolean defaultRequeueRejected) {
-			this.defaultRequeueRejected = defaultRequeueRejected;
-		}
+	/**
+	 * Configuration properties for {@code DirectMessageListenerContainer}.
+	 */
+	public static class DirectContainer extends AmqpContainer {
 
-		public Long getIdleEventInterval() {
-			return this.idleEventInterval;
-		}
+		/**
+		 * Number of consumers per queue.
+		 */
+		private Integer consumersPerQueue;
 
-		public void setIdleEventInterval(Long idleEventInterval) {
-			this.idleEventInterval = idleEventInterval;
+		public Integer getConsumersPerQueue() {
+			return this.consumersPerQueue;
 		}
 
-		public ListenerRetry getRetry() {
-			return this.retry;
+		public void setConsumersPerQueue(Integer consumersPerQueue) {
+			this.consumersPerQueue = consumersPerQueue;
 		}
 
 	}

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/amqp/SimpleRabbitListenerContainerFactoryConfigurer.java

@@ -16,109 +16,33 @@
 
 package org.springframework.boot.autoconfigure.amqp;
 
-import org.springframework.amqp.rabbit.config.RetryInterceptorBuilder;
 import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.connection.ConnectionFactory;
-import org.springframework.amqp.rabbit.listener.RabbitListenerContainerFactory;
-import org.springframework.amqp.rabbit.retry.MessageRecoverer;
-import org.springframework.amqp.rabbit.retry.RejectAndDontRequeueRecoverer;
-import org.springframework.amqp.support.converter.MessageConverter;
-import org.springframework.boot.autoconfigure.amqp.RabbitProperties.ListenerRetry;
-import org.springframework.util.Assert;
 
 /**
- * Configure {@link RabbitListenerContainerFactory} with sensible defaults.
+ * Configure {@link SimpleRabbitListenerContainerFactoryConfigurer} with sensible defaults.
  *
  * @author Stephane Nicoll
  * @author Gary Russell
  * @since 1.3.3
  */
-public final class SimpleRabbitListenerContainerFactoryConfigurer {
+public final class SimpleRabbitListenerContainerFactoryConfigurer
+		extends AbstractRabbitListenerContainerFactoryConfigurer<SimpleRabbitListenerContainerFactory> {
 
-	private MessageConverter messageConverter;
-
-	private MessageRecoverer messageRecoverer;
-
-	private RabbitProperties rabbitProperties;
-
-	/**
-	 * Set the {@link MessageConverter} to use or {@code null} if the out-of-the-box
-	 * converter should be used.
-	 * @param messageConverter the {@link MessageConverter}
-	 */
-	void setMessageConverter(MessageConverter messageConverter) {
-		this.messageConverter = messageConverter;
-	}
-
-	/**
-	 * Set the {@link MessageRecoverer} to use or {@code null} to rely on the default.
-	 * @param messageRecoverer the {@link MessageRecoverer}
-	 */
-	void setMessageRecoverer(MessageRecoverer messageRecoverer) {
-		this.messageRecoverer = messageRecoverer;
-	}
-
-	/**
-	 * Set the {@link RabbitProperties} to use.
-	 * @param rabbitProperties the {@link RabbitProperties}
-	 */
-	void setRabbitProperties(RabbitProperties rabbitProperties) {
-		this.rabbitProperties = rabbitProperties;
-	}
-
-	/**
-	 * Configure the specified rabbit listener container factory. The factory can be
-	 * further tuned and default settings can be overridden.
-	 * @param factory the {@link SimpleRabbitListenerContainerFactory} instance to
-	 * configure
-	 * @param connectionFactory the {@link ConnectionFactory} to use
-	 */
-	public void configure(SimpleRabbitListenerContainerFactory factory,
-			ConnectionFactory connectionFactory) {
-		Assert.notNull(factory, "Factory must not be null");
-		Assert.notNull(connectionFactory, "ConnectionFactory must not be null");
-		factory.setConnectionFactory(connectionFactory);
-		if (this.messageConverter != null) {
-			factory.setMessageConverter(this.messageConverter);
-		}
-		RabbitProperties.AmqpContainer config = this.rabbitProperties.getListener()
+	@Override
+	public void configure(SimpleRabbitListenerContainerFactory factory, ConnectionFactory connectionFactory) {
+		RabbitProperties.SimpleContainer config = getRabbitProperties().getListener()
 				.getSimple();
-		factory.setAutoStartup(config.isAutoStartup());
-		if (config.getAcknowledgeMode() != null) {
-			factory.setAcknowledgeMode(config.getAcknowledgeMode());
-		}
+		configure(factory, connectionFactory, config);
 		if (config.getConcurrency() != null) {
 			factory.setConcurrentConsumers(config.getConcurrency());
 		}
 		if (config.getMaxConcurrency() != null) {
 			factory.setMaxConcurrentConsumers(config.getMaxConcurrency());
 		}
-		if (config.getPrefetch() != null) {
-			factory.setPrefetchCount(config.getPrefetch());
-		}
 		if (config.getTransactionSize() != null) {
 			factory.setTxSize(config.getTransactionSize());
 		}
-		if (config.getDefaultRequeueRejected() != null) {
-			factory.setDefaultRequeueRejected(config.getDefaultRequeueRejected());
-		}
-		if (config.getIdleEventInterval() != null) {
-			factory.setIdleEventInterval(config.getIdleEventInterval());
-		}
-		ListenerRetry retryConfig = config.getRetry();
-		if (retryConfig.isEnabled()) {
-			RetryInterceptorBuilder<?> builder = (retryConfig.isStateless()
-					? RetryInterceptorBuilder.stateless()
-					: RetryInterceptorBuilder.stateful());
-			builder.maxAttempts(retryConfig.getMaxAttempts());
-			builder.backOffOptions(retryConfig.getInitialInterval(),
-					retryConfig.getMultiplier(), retryConfig.getMaxInterval());
-			MessageRecoverer recoverer = (this.messageRecoverer != null
-					? this.messageRecoverer : new RejectAndDontRequeueRecoverer());
-			builder.recoverer(recoverer);
-			factory.setAdviceChain(builder.build());
-		}
-
 	}
 
 }

spring-boot-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -363,72 +363,6 @@
     "description": "Create an AmqpAdmin bean.",
     "defaultValue": true
   },
-  {
-    "name": "spring.rabbitmq.listener.retry.enabled",
-    "type": "java.lang.Boolean",
-    "description": "Whether or not publishing retries are enabled.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": false,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.enabled"
-    }
-  },
-  {
-    "name": "spring.rabbitmq.listener.retry.initial-interval",
-    "type": "java.lang.Long",
-    "description": "Interval between the first and second attempt to publish or deliver a message.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": 1000,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.initial-interval"
-    }
-  },
-  {
-    "name": "spring.rabbitmq.listener.retry.max-attempts",
-    "type": "java.lang.Integer",
-    "description": "Maximum number of attempts to publish or deliver a message.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": 3,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.max-attempts"
-    }
-  },
-  {
-    "name": "spring.rabbitmq.listener.retry.max-interval",
-    "type": "java.lang.Long",
-    "description": "Maximum interval between attempts.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": 10000,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.max-interval"
-    }
-  },
-  {
-    "name": "spring.rabbitmq.listener.retry.multiplier",
-    "type": "java.lang.Double",
-    "description": "A multiplier to apply to the previous retry interval.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": 1,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.multiplier"
-    }
-  },
-  {
-    "name": "spring.rabbitmq.listener.retry.stateless",
-    "type": "java.lang.Boolean",
-    "description": "Whether or not retries are stateless or stateful.",
-    "sourceType": "org.springframework.boot.autoconfigure.amqp.RabbitProperties$ListenerRetry",
-    "defaultValue": true,
-    "deprecated": true,
-    "deprecation": {
-      "replacement": "spring.rabbitmq.listener.simple.retry.stateless"
-    }
-  },
   {
     "name": "spring.session.hazelcast.flush-mode",
     "defaultValue": "on-save"

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/amqp/RabbitAutoConfigurationTests.java

@@ -30,6 +30,7 @@ import org.springframework.amqp.core.AcknowledgeMode;
 import org.springframework.amqp.core.AmqpAdmin;
 import org.springframework.amqp.core.Message;
 import org.springframework.amqp.rabbit.annotation.EnableRabbit;
+import org.springframework.amqp.rabbit.config.DirectRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.config.RabbitListenerConfigUtils;
 import org.springframework.amqp.rabbit.config.SimpleRabbitListenerContainerFactory;
 import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
@@ -292,28 +293,10 @@ public class RabbitAutoConfigurationTests {
 		assertThat(adviceChain).isNull();
 	}
 
-	@Test
-	@Deprecated
-	public void testSimpleRabbitListenerContainerFactoryWithCustomDeprecatedSettings() {
-		testSimpleRabbitListenerContainerFactoryWithCustomSettings(
-				"spring.rabbitmq.listener.retry.enabled:true",
-				"spring.rabbitmq.listener.retry.maxAttempts:4",
-				"spring.rabbitmq.listener.retry.initialInterval:2000",
-				"spring.rabbitmq.listener.retry.multiplier:1.5",
-				"spring.rabbitmq.listener.retry.maxInterval:5000",
-				"spring.rabbitmq.listener.autoStartup:false",
-				"spring.rabbitmq.listener.acknowledgeMode:manual",
-				"spring.rabbitmq.listener.concurrency:5",
-				"spring.rabbitmq.listener.maxConcurrency:10",
-				"spring.rabbitmq.listener.prefetch:40",
-				"spring.rabbitmq.listener.defaultRequeueRejected:false",
-				"spring.rabbitmq.listener.idleEventInterval:5",
-				"spring.rabbitmq.listener.transactionSize:20");
-	}
-
 	@Test
 	public void testSimpleRabbitListenerContainerFactoryWithCustomSettings() {
-		testSimpleRabbitListenerContainerFactoryWithCustomSettings(
+		load(new Class<?>[] { MessageConvertersConfiguration.class,
+						MessageRecoverersConfiguration.class },
 				"spring.rabbitmq.listener.simple.retry.enabled:true",
 				"spring.rabbitmq.listener.simple.retry.maxAttempts:4",
 				"spring.rabbitmq.listener.simple.retry.initialInterval:2000",
@@ -327,26 +310,91 @@ public class RabbitAutoConfigurationTests {
 				"spring.rabbitmq.listener.simple.defaultRequeueRejected:false",
 				"spring.rabbitmq.listener.simple.idleEventInterval:5",
 				"spring.rabbitmq.listener.simple.transactionSize:20");
+		SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory = this.context
+				.getBean("rabbitListenerContainerFactory",
+						SimpleRabbitListenerContainerFactory.class);
+		DirectFieldAccessor dfa = new DirectFieldAccessor(rabbitListenerContainerFactory);
+		assertThat(dfa.getPropertyValue("concurrentConsumers")).isEqualTo(5);
+		assertThat(dfa.getPropertyValue("maxConcurrentConsumers")).isEqualTo(10);
+		assertThat(dfa.getPropertyValue("txSize")).isEqualTo(20);
+		checkCommonProps(dfa);
 	}
 
-	private void testSimpleRabbitListenerContainerFactoryWithCustomSettings(String... environment) {
+	@Test
+	public void testDirectRabbitListenerContainerFactoryWithCustomSettings() {
 		load(new Class<?>[] { MessageConvertersConfiguration.class,
-						MessageRecoverersConfiguration.class }, environment);
-		SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory = this.context
+				MessageRecoverersConfiguration.class },
+				"spring.rabbitmq.listener.type:direct",
+				"spring.rabbitmq.listener.direct.retry.enabled:true",
+				"spring.rabbitmq.listener.direct.retry.maxAttempts:4",
+				"spring.rabbitmq.listener.direct.retry.initialInterval:2000",
+				"spring.rabbitmq.listener.direct.retry.multiplier:1.5",
+				"spring.rabbitmq.listener.direct.retry.maxInterval:5000",
+				"spring.rabbitmq.listener.direct.autoStartup:false",
+				"spring.rabbitmq.listener.direct.acknowledgeMode:manual",
+				"spring.rabbitmq.listener.direct.consumers-per-queue:5",
+				"spring.rabbitmq.listener.direct.prefetch:40",
+				"spring.rabbitmq.listener.direct.defaultRequeueRejected:false",
+				"spring.rabbitmq.listener.direct.idleEventInterval:5");
+		DirectRabbitListenerContainerFactory rabbitListenerContainerFactory = this.context
 				.getBean("rabbitListenerContainerFactory",
-						SimpleRabbitListenerContainerFactory.class);
+						DirectRabbitListenerContainerFactory.class);
 		DirectFieldAccessor dfa = new DirectFieldAccessor(rabbitListenerContainerFactory);
+		assertThat(dfa.getPropertyValue("consumersPerQueue")).isEqualTo(5);
 		checkCommonProps(dfa);
 	}
 
+	@Test
+	public void testRabbitListenerContainerFactoryConfigurersAreAvailable() {
+		load(TestConfiguration.class,
+				"spring.rabbitmq.listener.simple.concurrency:5",
+				"spring.rabbitmq.listener.simple.maxConcurrency:10",
+				"spring.rabbitmq.listener.simple.prefetch:40",
+				"spring.rabbitmq.listener.direct.consumers-per-queue:5",
+				"spring.rabbitmq.listener.direct.prefetch:40");
+		assertThat(this.context.getBeansOfType(
+				SimpleRabbitListenerContainerFactoryConfigurer.class)).hasSize(1);
+		assertThat(this.context.getBeansOfType(
+				DirectRabbitListenerContainerFactoryConfigurer.class)).hasSize(1);
+	}
+
+	@Test
+	public void testSimpleRabbitListenerContainerFactoryConfigurerUsesConfig() {
+		load(TestConfiguration.class,
+				"spring.rabbitmq.listener.type:direct", // listener type is irrelevant
+				"spring.rabbitmq.listener.simple.concurrency:5",
+				"spring.rabbitmq.listener.simple.maxConcurrency:10",
+				"spring.rabbitmq.listener.simple.prefetch:40");
+		SimpleRabbitListenerContainerFactoryConfigurer configurer = this.context
+				.getBean(SimpleRabbitListenerContainerFactoryConfigurer.class);
+		SimpleRabbitListenerContainerFactory factory =
+				mock(SimpleRabbitListenerContainerFactory.class);
+		configurer.configure(factory, mock(ConnectionFactory.class));
+		verify(factory).setConcurrentConsumers(5);
+		verify(factory).setMaxConcurrentConsumers(10);
+		verify(factory).setPrefetchCount(40);
+	}
+
+	@Test
+	public void testDirectRabbitListenerContainerFactoryConfigurerUsesConfig() {
+		load(TestConfiguration.class,
+				"spring.rabbitmq.listener.type:simple", // listener type is irrelevant
+				"spring.rabbitmq.listener.direct.consumers-per-queue:5",
+				"spring.rabbitmq.listener.direct.prefetch:40");
+		DirectRabbitListenerContainerFactoryConfigurer configurer = this.context
+				.getBean(DirectRabbitListenerContainerFactoryConfigurer.class);
+		DirectRabbitListenerContainerFactory factory =
+				mock(DirectRabbitListenerContainerFactory.class);
+		configurer.configure(factory, mock(ConnectionFactory.class));
+		verify(factory).setConsumersPerQueue(5);
+		verify(factory).setPrefetchCount(40);
+	}
+
 	private void checkCommonProps(DirectFieldAccessor dfa) {
 		assertThat(dfa.getPropertyValue("autoStartup")).isEqualTo(Boolean.FALSE);
 		assertThat(dfa.getPropertyValue("acknowledgeMode"))
 				.isEqualTo(AcknowledgeMode.MANUAL);
-		assertThat(dfa.getPropertyValue("concurrentConsumers")).isEqualTo(5);
-		assertThat(dfa.getPropertyValue("maxConcurrentConsumers")).isEqualTo(10);
 		assertThat(dfa.getPropertyValue("prefetchCount")).isEqualTo(40);
-		assertThat(dfa.getPropertyValue("txSize")).isEqualTo(20);
 		assertThat(dfa.getPropertyValue("messageConverter"))
 				.isSameAs(this.context.getBean("myMessageConverter"));
 		assertThat(dfa.getPropertyValue("defaultRequeueRejected"))

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -975,12 +975,13 @@ content into your application; rather pick only the properties that you need.
 	spring.rabbitmq.connection-timeout= # Connection timeout, in milliseconds; zero for infinite.
 	spring.rabbitmq.dynamic=true # Create an AmqpAdmin bean.
 	spring.rabbitmq.host=localhost # RabbitMQ host.
+	spring.rabbitmq.listener.direct.consumers-per-queue= # Number of consumers per queue.
 	spring.rabbitmq.listener.simple.acknowledge-mode= # Acknowledge mode of container.
 	spring.rabbitmq.listener.simple.auto-startup=true # Start the container automatically on startup.
-	spring.rabbitmq.listener.simple.concurrency= # Minimum number of consumers.
-	spring.rabbitmq.listener.simple.default-requeue-rejected= # Whether or not to requeue delivery failures; default `true`.
+	spring.rabbitmq.listener.simple.concurrency= # Minimum number of listener invoker threads.
+	spring.rabbitmq.listener.simple.default-requeue-rejected= # Whether or not to requeue delivery failures.
 	spring.rabbitmq.listener.simple.idle-event-interval= # How often idle container events should be published in milliseconds.
-	spring.rabbitmq.listener.simple.max-concurrency= # Maximum number of consumers.
+	spring.rabbitmq.listener.simple.max-concurrency= # Maximum number of listener invoker.
 	spring.rabbitmq.listener.simple.prefetch= # Number of messages to be handled in a single request. It should be greater than or equal to the transaction size (if used).
 	spring.rabbitmq.listener.simple.retry.enabled=false # Whether or not publishing retries are enabled.
 	spring.rabbitmq.listener.simple.retry.initial-interval=1000 # Interval between the first and second attempt to deliver a message.
@@ -988,7 +989,8 @@ content into your application; rather pick only the properties that you need.
 	spring.rabbitmq.listener.simple.retry.max-interval=10000 # Maximum interval between attempts.
 	spring.rabbitmq.listener.simple.retry.multiplier=1.0 # A multiplier to apply to the previous delivery retry interval.
 	spring.rabbitmq.listener.simple.retry.stateless=true # Whether or not retry is stateless or stateful.
-	spring.rabbitmq.listener.simple.transaction-size= # Number of messages to be processed in a transaction. For best results it should be less than or equal to the prefetch count.
+	spring.rabbitmq.listener.simple.transaction-size= # Number of messages to be processed in a transaction; number of messages between acks. For best results it should be less than or equal to the prefetch count.
+	spring.rabbitmq.listener.type=simple # Listener container type.
 	spring.rabbitmq.password= # Login to authenticate against the broker.
 	spring.rabbitmq.port=5672 # RabbitMQ port.
 	spring.rabbitmq.publisher-confirms=false # Enable publisher confirms.

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -4653,9 +4653,10 @@ the broker connection is lost. Retries are disabled by default.
 ==== Receiving a message
 When the Rabbit infrastructure is present, any bean can be annotated with
 `@RabbitListener` to create a listener endpoint. If no `RabbitListenerContainerFactory`
-has been defined, a default one is configured automatically.  If a `MessageConverter` or
-`MessageRecoverer` beans are defined, they are associated automatically to the default
-factory.
+has been defined, a default `SimpleRabbitListenerContainerFactory` is configured
+automatically and you can switch to a direct container using the
+`spring.rabbitmq.listener.type` property.  If a `MessageConverter` or `MessageRecoverer`
+beans are defined, they are associated automatically to the default factory.
 
 The following component creates a listener endpoint on the `someQueue` queue:
 
@@ -4677,9 +4678,13 @@ for more details.
 
 If you need to create more `RabbitListenerContainerFactory` instances or if you want to
 override the default, Spring Boot provides a
-`SimpleRabbitListenerContainerFactoryConfigurer` that you can use to initialize a
-`SimpleRabbitListenerContainerFactory` with the same settings as the one that is
-auto-configured.
+`SimpleRabbitListenerContainerFactoryConfigurer` and
+`DirectRabbitListenerContainerFactoryConfigurer` that you can use to initialize a
+`SimpleRabbitListenerContainerFactory` and `DirectRabbitListenerContainerFactory` with the
+same settings as the one used by the auto-configuration.
+
+TIP: It doesn't matter which container type you've chosen, those two beans are exposed by
+the auto-configuration.
 
 For instance, the following exposes another factory that uses a specific
 `MessageConverter`: