Add HealthIndicator for Rabbit

spring-boot-actuator/pom.xml

@@ -111,6 +111,11 @@
 			<artifactId>jedis</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.amqp</groupId>
+			<artifactId>spring-rabbit</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<!-- Test -->
 		<dependency>
 			<groupId>ch.qos.logback</groupId>

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/autoconfigure/HealthIndicatorAutoConfiguration.java

@@ -20,15 +20,18 @@ import java.util.Map;
 
 import javax.sql.DataSource;
 
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.actuate.health.CompositeHealthIndicator;
 import org.springframework.boot.actuate.health.HealthIndicator;
 import org.springframework.boot.actuate.health.MongoHealthIndicator;
+import org.springframework.boot.actuate.health.RabbitHealthIndicator;
 import org.springframework.boot.actuate.health.RedisHealthIndicator;
 import org.springframework.boot.actuate.health.SimpleDataSourceHealthIndicator;
 import org.springframework.boot.actuate.health.VanillaHealthIndicator;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.amqp.RabbitAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.jdbc.CommonsDataSourceConfiguration;
@@ -46,7 +49,7 @@ import org.springframework.data.redis.connection.RedisConnectionFactory;
 
 /**
  * {@link EnableAutoConfiguration Auto-configuration} for {@link HealthIndicator}s.
- * 
+ *
  * @author Christian Dupuis
  * @since 1.1.0
  */
@@ -55,7 +58,7 @@ import org.springframework.data.redis.connection.RedisConnectionFactory;
 		EmbeddedDataSourceConfiguration.class, CommonsDataSourceConfiguration.class,
 		HikariDataSourceConfiguration.class, TomcatDataSourceConfiguration.class,
 		MongoAutoConfiguration.class, MongoDataAutoConfiguration.class,
-		RedisAutoConfiguration.class })
+		RedisAutoConfiguration.class, RabbitAutoConfiguration.class })
 public class HealthIndicatorAutoConfiguration {
 
 	@Bean
@@ -137,4 +140,29 @@ public class HealthIndicatorAutoConfiguration {
 		}
 	}
 
+	@Configuration
+	@ConditionalOnBean(RabbitTemplate.class)
+	public static class RabbitHealthIndicatorConfiguration {
+
+		@Autowired
+		private Map<String, RabbitTemplate> rabbitTemplates;
+
+		@Bean
+		@ConditionalOnMissingBean(name = "rabbitHealthIndicator")
+		public HealthIndicator<?> redisHealthIndicator() {
+			if (this.rabbitTemplates.size() == 1) {
+				return new RabbitHealthIndicator(this.rabbitTemplates.values().iterator()
+						.next());
+			}
+
+			CompositeHealthIndicator composite = new CompositeHealthIndicator();
+			for (Map.Entry<String, RabbitTemplate> entry : this.rabbitTemplates
+					.entrySet()) {
+				composite.addHealthIndicator(entry.getKey(), new RabbitHealthIndicator(
+						entry.getValue()));
+			}
+			return composite;
+		}
+	}
+
 }

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/RabbitHealthIndicator.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2012-2014 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.actuate.health;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.springframework.amqp.rabbit.core.ChannelCallback;
+import org.springframework.amqp.rabbit.core.RabbitTemplate;
+import org.springframework.util.Assert;
+
+import com.rabbitmq.client.Channel;
+
+/**
+ * Simple implementation of a {@link HealthIndicator} returning status information for the
+ * RabbitMQ messaging system.
+ *
+ * @author Christian Dupuis
+ * @since 1.1.0
+ */
+public class RabbitHealthIndicator implements HealthIndicator<Map<String, Object>> {
+
+	private final RabbitTemplate rabbitTemplate;
+
+	public RabbitHealthIndicator(RabbitTemplate rabbitTemplate) {
+		Assert.notNull(rabbitTemplate, "RabbitTemplate must not be null.");
+		this.rabbitTemplate = rabbitTemplate;
+	}
+
+	@Override
+	public Map<String, Object> health() {
+		Map<String, Object> health = new HashMap<String, Object>();
+		try {
+			health.put("version",
+					this.rabbitTemplate.execute(new ChannelCallback<String>() {
+
+						@Override
+						public String doInRabbit(Channel channel) throws Exception {
+							Map<String, Object> serverProperties = channel
+									.getConnection().getServerProperties();
+							return serverProperties.get("version").toString();
+						}
+					}));
+
+			health.put("status", "ok");
+		}
+		catch (Exception ex) {
+			health.put("status", "error");
+			health.put("error", ex.getClass().getName() + ": " + ex.getMessage());
+		}
+		return health;
+	}
+}

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/RabbitHealthIndicatorTests.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2014 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.actuate.health;
+
+import org.junit.After;
+import org.junit.Test;
+import org.springframework.amqp.rabbit.core.RabbitAdmin;
+import org.springframework.boot.actuate.autoconfigure.EndpointAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.HealthIndicatorAutoConfiguration;
+import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
+import org.springframework.boot.autoconfigure.amqp.RabbitAutoConfiguration;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * Tests for {@link RabbitHealthIndicator}.
+ *
+ * @author Christian Dupuis
+ */
+public class RabbitHealthIndicatorTests {
+
+	private AnnotationConfigApplicationContext context;
+
+	@After
+	public void close() {
+		if (this.context != null) {
+			this.context.close();
+		}
+	}
+
+	@Test
+	public void indicatorExists() {
+		this.context = new AnnotationConfigApplicationContext(
+				PropertyPlaceholderAutoConfiguration.class,
+				RabbitAutoConfiguration.class, EndpointAutoConfiguration.class,
+				HealthIndicatorAutoConfiguration.class);
+		assertEquals(1, this.context.getBeanNamesForType(RabbitAdmin.class).length);
+		RabbitHealthIndicator healthIndicator = this.context
+				.getBean(RabbitHealthIndicator.class);
+		assertNotNull(healthIndicator);
+	}
+
+}