Add PoolConfig to Redis

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/redis/RedisAutoConfiguration.java

@@ -18,17 +18,23 @@ package org.springframework.boot.autoconfigure.redis;
 
 import java.net.UnknownHostException;
 
+import org.apache.commons.pool.impl.GenericObjectPool;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
+import org.springframework.boot.autoconfigure.redis.RedisAutoConfiguration.RedisProperties.Pool;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.PoolConfig;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.connection.lettuce.DefaultLettucePool;
 import org.springframework.data.redis.connection.lettuce.LettuceConnection;
 import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
+import org.springframework.data.redis.connection.lettuce.LettucePool;
 import org.springframework.data.redis.core.RedisOperations;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.core.StringRedisTemplate;
@@ -43,15 +49,40 @@ import org.springframework.data.redis.core.StringRedisTemplate;
 public class RedisAutoConfiguration {
 
 	@Configuration
-	@EnableConfigurationProperties(RedisProperties.class)
-	protected static class RedisConfiguration {
+	@ConditionalOnMissingClass(name = "org.apache.commons.pool.impl.GenericObjectPool")
+	protected static class RedisConnectionConfiguration {
+
+		@Autowired
+		private RedisProperties config;
+
+		@Bean
+		@ConditionalOnMissingBean
+		RedisConnectionFactory redisConnectionFactory() throws UnknownHostException {
+			LettuceConnectionFactory factory = new LettuceConnectionFactory(
+					this.config.getHost(), this.config.getPort());
+			if (this.config.getPassword() != null) {
+				factory.setPassword(this.config.getPassword());
+			}
+			return factory;
+		}
+
+	}
+
+	@Configuration
+	@ConditionalOnClass(GenericObjectPool.class)
+	protected static class RedisPooledConnectionConfiguration {
 
 		@Autowired
 		private RedisProperties config;
 
 		@Bean
-		@ConditionalOnMissingBean(RedisConnectionFactory.class)
+		@ConditionalOnMissingBean
 		RedisConnectionFactory redisConnectionFactory() throws UnknownHostException {
+			if (this.config.getPool() != null) {
+				LettuceConnectionFactory factory = new LettuceConnectionFactory(
+						lettucePool());
+				return factory;
+			}
 			LettuceConnectionFactory factory = new LettuceConnectionFactory(
 					this.config.getHost(), this.config.getPort());
 			if (this.config.getPassword() != null) {
@@ -60,6 +91,33 @@ public class RedisAutoConfiguration {
 			return factory;
 		}
 
+		@Bean
+		@ConditionalOnMissingBean
+		public LettucePool lettucePool() {
+			return new DefaultLettucePool(this.config.getHost(), this.config.getPort(),
+					poolConfig());
+		}
+
+		private PoolConfig poolConfig() {
+			PoolConfig pool = new PoolConfig();
+			Pool props = this.config.getPool();
+			if (props != null) {
+				pool.setMaxActive(props.getMaxActive());
+				pool.setMaxIdle(props.getMaxIdle());
+				pool.setMinIdle(props.getMinIdle());
+				pool.setMaxWait(props.getMaxWait());
+			}
+			return pool;
+		}
+	}
+
+	@Configuration
+	@EnableConfigurationProperties(RedisProperties.class)
+	protected static class RedisConfiguration {
+
+		@Autowired
+		private RedisProperties config;
+
 		@Bean
 		@ConditionalOnMissingBean(name = "redisTemplate")
 		RedisOperations<Object, Object> redisTemplate(
@@ -91,6 +149,8 @@ public class RedisAutoConfiguration {
 
 		private int port = 6379;
 
+		private Pool pool;
+
 		public String getHost() {
 			return this.host;
 		}
@@ -115,6 +175,53 @@ public class RedisAutoConfiguration {
 			this.password = password;
 		}
 
+		public Pool getPool() {
+			return this.pool;
+		}
+
+		public void setPool(Pool pool) {
+			this.pool = pool;
+		}
+
+		public static class Pool {
+			private int maxIdle = 8;
+			private int minIdle = 0;
+			private int maxActive = 8;
+			private int maxWait = -1;
+
+			public int getMaxIdle() {
+				return this.maxIdle;
+			}
+
+			public void setMaxIdle(int maxIdle) {
+				this.maxIdle = maxIdle;
+			}
+
+			public int getMinIdle() {
+				return this.minIdle;
+			}
+
+			public void setMinIdle(int minIdle) {
+				this.minIdle = minIdle;
+			}
+
+			public int getMaxActive() {
+				return this.maxActive;
+			}
+
+			public void setMaxActive(int maxActive) {
+				this.maxActive = maxActive;
+			}
+
+			public int getMaxWait() {
+				return this.maxWait;
+			}
+
+			public void setMaxWait(int maxWait) {
+				this.maxWait = maxWait;
+			}
+		}
+
 	}
 
 }

spring-boot-samples/pom.xml

@@ -23,6 +23,7 @@
 		<module>spring-boot-sample-batch</module>
 		<module>spring-boot-sample-data-jpa</module>
 		<module>spring-boot-sample-data-mongodb</module>
+		<module>spring-boot-sample-data-redis</module>
 		<module>spring-boot-sample-integration</module>
 		<module>spring-boot-sample-jetty</module>
 		<module>spring-boot-sample-profile</module>

spring-boot-samples/spring-boot-sample-data-redis/pom.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<!-- Your own application should inherit from spring-boot-starter-parent -->
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-samples</artifactId>
+		<version>0.5.0.BUILD-SNAPSHOT</version>
+	</parent>
+	<artifactId>spring-boot-sample-data-redis</artifactId>
+	<packaging>jar</packaging>
+	<properties>
+		<main.basedir>${basedir}/../..</main.basedir>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.data</groupId>
+			<artifactId>spring-data-redis</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.lambdaworks</groupId>
+			<artifactId>lettuce</artifactId>
+		</dependency>
+	</dependencies>
+	<profiles>
+		<profile>
+			<id>production</id>
+			<dependencies>
+				<!-- This sample is a test for the autoconfig when commons-pool is *absent*. 
+					In production it would be useful to enable pooling by using this dependency. -->
+				<dependency>
+					<groupId>commons-pool</groupId>
+					<artifactId>commons-pool</artifactId>
+					<type>pom.lastUpdated</type>
+				</dependency>
+			</dependencies>
+		</profile>
+	</profiles>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+</project>

spring-boot-samples/spring-boot-sample-data-redis/src/main/java/org/springframework/boot/sample/data/redis/SampleRedisApplication.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2012-2013 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.sample.data.redis;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.core.StringRedisTemplate;
+import org.springframework.data.redis.core.ValueOperations;
+
+@Configuration
+@EnableAutoConfiguration
+public class SampleRedisApplication implements CommandLineRunner {
+
+	@Autowired
+	private StringRedisTemplate template;
+
+	@Override
+	public void run(String... args) throws Exception {
+		ValueOperations<String, String> ops = template.opsForValue();
+		String key = "spring.boot.redis.test";
+		if (!template.hasKey(key)) {
+			ops.set(key, "foo");
+		}
+		System.out.println("Found key " + key + ", value=" + ops.get(key));
+	}
+
+	public static void main(String[] args) throws Exception {
+		// Close the context so it doesn't stay awake listening for redis
+		SpringApplication.run(SampleRedisApplication.class, args).close();
+	}
+}

spring-boot-samples/spring-boot-sample-data-redis/src/test/java/org/springframework/boot/sample/data/redis/SampleRedisApplicationTests.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2012-2013 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.sample.data.redis;
+
+import static org.junit.Assert.assertTrue;
+
+import java.io.IOException;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.springframework.boot.OutputCapture;
+import org.springframework.boot.sample.data.redis.SampleRedisApplication;
+import org.springframework.core.NestedCheckedException;
+
+/**
+ * Tests for {@link SampleRedisApplication}.
+ * 
+ * @author Dave Syer
+ */
+public class SampleRedisApplicationTests {
+
+	@Rule
+	public OutputCapture outputCapture = new OutputCapture();
+
+	@Test
+	public void testDefaultSettings() throws Exception {
+		try {
+			SampleRedisApplication.main(new String[0]);
+		}
+		catch (IllegalStateException ex) {
+			if (serverNotRunning(ex)) {
+				return;
+			}
+		}
+		String output = this.outputCapture.toString();
+		assertTrue("Wrong output: " + output,
+				output.contains("Found key spring.boot.redis.test"));
+	}
+
+	private boolean serverNotRunning(IllegalStateException e) {
+		@SuppressWarnings("serial")
+		NestedCheckedException nested = new NestedCheckedException("failed", e) {
+		};
+		if (nested.contains(IOException.class)) {
+			Throwable root = nested.getRootCause();
+			if (root.getMessage().contains("couldn't connect to [localhost")) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+}