Merge pull request #18808 from markpollack

* pr/18808:
  Polish "Support amqps:// URIs in spring.rabbitmq.addresses"
  Support amqps:// URIs in spring.rabbitmq.addresses

Closes gh-18808

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

@@ -125,7 +125,7 @@ public class RabbitAutoConfiguration {
 			map.from(properties::getRequestedHeartbeat).whenNonNull().asInt(Duration::getSeconds)
 					.to(factory::setRequestedHeartbeat);
 			RabbitProperties.Ssl ssl = properties.getSsl();
-			if (ssl.isEnabled()) {
+			if (ssl.determineEnabled()) {
 				factory.setUseSSL(true);
 				map.from(ssl::getAlgorithm).whenNonNull().to(factory::setSslAlgorithm);
 				map.from(ssl::getKeyStoreType).to(factory::setKeyStoreType);

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

@@ -310,7 +310,7 @@ public class RabbitProperties {
 		return this.template;
 	}
 
-	public static class Ssl {
+	public class Ssl {
 
 		/**
 		 * Whether to enable SSL support.
@@ -366,6 +366,21 @@ public class RabbitProperties {
 			return this.enabled;
 		}
 
+		/**
+		 * Returns whether SSL is enabled from the first address, or the configured ssl
+		 * enabled flag if no addresses have been set.
+		 * @return whether ssl is enabled
+		 * @see #setAddresses(String)
+		 * @see #isEnabled()
+		 */
+		public boolean determineEnabled() {
+			if (CollectionUtils.isEmpty(RabbitProperties.this.parsedAddresses)) {
+				return isEnabled();
+			}
+			Address address = RabbitProperties.this.parsedAddresses.get(0);
+			return address.secureConnection;
+		}
+
 		public void setEnabled(boolean enabled) {
 			this.enabled = enabled;
 		}
@@ -937,6 +952,10 @@ public class RabbitProperties {
 
 		private static final int DEFAULT_PORT = 5672;
 
+		private static final String PREFIX_AMQP_SECURE = "amqps://";
+
+		private static final int DEFAULT_PORT_SECURE = 5671;
+
 		private String host;
 
 		private int port;
@@ -947,6 +966,8 @@ public class RabbitProperties {
 
 		private String virtualHost;
 
+		private boolean secureConnection;
+
 		private Address(String input) {
 			input = input.trim();
 			input = trimPrefix(input);
@@ -956,6 +977,10 @@ public class RabbitProperties {
 		}
 
 		private String trimPrefix(String input) {
+			if (input.startsWith(PREFIX_AMQP_SECURE)) {
+				this.secureConnection = true;
+				return input.substring(PREFIX_AMQP_SECURE.length());
+			}
 			if (input.startsWith(PREFIX_AMQP)) {
 				input = input.substring(PREFIX_AMQP.length());
 			}
@@ -992,7 +1017,7 @@ public class RabbitProperties {
 			int portIndex = input.indexOf(':');
 			if (portIndex == -1) {
 				this.host = input;
-				this.port = DEFAULT_PORT;
+				this.port = (this.secureConnection) ? DEFAULT_PORT_SECURE : DEFAULT_PORT;
 			}
 			else {
 				this.host = input.substring(0, portIndex);

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

@@ -89,6 +89,18 @@ public class RabbitPropertiesTests {
 		assertThat(this.properties.determinePort()).isEqualTo(5672);
 	}
 
+	@Test
+	public void determinePortUsingAmqpReturnsPortOfFirstAddress() {
+		this.properties.setAddresses("amqp://root:password@otherhost,amqps://root:password2@otherhost2");
+		assertThat(this.properties.determinePort()).isEqualTo(5672);
+	}
+
+	@Test
+	public void determinePortUsingAmqpsReturnsPortOfFirstAddress() {
+		this.properties.setAddresses("amqps://root:password@otherhost,amqp://root:password2@otherhost2");
+		assertThat(this.properties.determinePort()).isEqualTo(5671);
+	}
+
 	@Test
 	public void virtualHostDefaultsToNull() {
 		assertThat(this.properties.getVirtualHost()).isNull();
@@ -222,6 +234,24 @@ public class RabbitPropertiesTests {
 		assertThat(this.properties.determineAddresses()).isEqualTo("rabbit.example.com:1234");
 	}
 
+	@Test
+	public void determineSslUsingAmqpsReturnsStateOfFirstAddress() {
+		this.properties.setAddresses("amqps://root:password@otherhost,amqp://root:password2@otherhost2");
+		assertThat(this.properties.getSsl().determineEnabled()).isTrue();
+	}
+
+	@Test
+	public void determineSslUsingAmqpReturnsStateOfFirstAddress() {
+		this.properties.setAddresses("amqp://root:password@otherhost,amqps://root:password2@otherhost2");
+		assertThat(this.properties.getSsl().determineEnabled()).isFalse();
+	}
+
+	@Test
+	public void determineSslReturnFlagPropertyWhenNoAddresses() {
+		this.properties.getSsl().setEnabled(true);
+		assertThat(this.properties.getSsl().determineEnabled()).isTrue();
+	}
+
 	@Test
 	public void simpleContainerUseConsistentDefaultValues() {
 		SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();

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

@@ -4762,6 +4762,13 @@ For example, you might declare the following section in `application.properties`
 	spring.rabbitmq.password=secret
 ----
 
+Alternatively, you could configure the same connection using the `addresses` attributes:
+
+[source,properties,indent=0]
+----
+	spring.rabbitmq.addresses=amqp://admin:secret@localhost
+----
+
 If a `ConnectionNameStrategy` bean exists in the context, it will be automatically used to name connections created by the auto-configured `ConnectionFactory`.
 See {spring-boot-autoconfigure-module-code}/amqp/RabbitProperties.java[`RabbitProperties`] for more of the supported options.