Merge pull request #37619 from jonasfugedi

* pr/37619:
  Polish "Support IPv6 addresses when configuring RabbitMQ using properties"
  Support IPv6 addresses when configuring RabbitMQ using properties

Closes gh-37619

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

@@ -53,8 +53,10 @@ class PropertiesRabbitConnectionDetails implements RabbitConnectionDetails {
 	public List<Address> getAddresses() {
 		List<Address> addresses = new ArrayList<>();
 		for (String address : this.properties.determineAddresses().split(",")) {
-			String[] components = address.split(":");
-			addresses.add(new Address(components[0], Integer.parseInt(components[1])));
+			int portSeparatorIndex = address.lastIndexOf(':');
+			String host = address.substring(0, portSeparatorIndex);
+			String port = address.substring(portSeparatorIndex + 1);
+			addresses.add(new Address(host, Integer.parseInt(port)));
 		}
 		return addresses;
 	}

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

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2012-2023 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.amqp;
+
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.amqp.RabbitConnectionDetails.Address;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link PropertiesRabbitConnectionDetails}.
+ *
+ * @author Jonas Fügedi
+ */
+class PropertiesRabbitConnectionDetailsTests {
+
+	private static final int DEFAULT_PORT = 5672;
+
+	@Test
+	void getAddresses() {
+		RabbitProperties properties = new RabbitProperties();
+		properties.setAddresses("localhost,localhost:1234,[::1],[::1]:32863");
+		PropertiesRabbitConnectionDetails propertiesRabbitConnectionDetails = new PropertiesRabbitConnectionDetails(
+				properties);
+		List<Address> addresses = propertiesRabbitConnectionDetails.getAddresses();
+		assertThat(addresses.size()).isEqualTo(4);
+		assertThat(addresses.get(0).host()).isEqualTo("localhost");
+		assertThat(addresses.get(0).port()).isEqualTo(DEFAULT_PORT);
+		assertThat(addresses.get(1).host()).isEqualTo("localhost");
+		assertThat(addresses.get(1).port()).isEqualTo(1234);
+		assertThat(addresses.get(2).host()).isEqualTo("[::1]");
+		assertThat(addresses.get(2).port()).isEqualTo(DEFAULT_PORT);
+		assertThat(addresses.get(3).host()).isEqualTo("[::1]");
+		assertThat(addresses.get(3).port()).isEqualTo(32863);
+	}
+
+}

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

@@ -281,6 +281,13 @@ class RabbitPropertiesTests {
 		assertThat(this.properties.determineAddresses()).isEqualTo("rabbit.example.com:1234");
 	}
 
+	@Test
+	void determineAddressesUsesIpv6HostAndPortPropertiesWhenNoAddressesSet() {
+		this.properties.setHost("[::1]");
+		this.properties.setPort(32863);
+		assertThat(this.properties.determineAddresses()).isEqualTo("[::1]:32863");
+	}
+
 	@Test
 	void determineSslUsingAmqpsReturnsStateOfFirstAddress() {
 		this.properties.setAddresses("amqps://root:password@otherhost,amqp://root:password2@otherhost2");