Add EnableRedisHttpSession

Fixes gh-42

spring-session/src/main/java/org/springframework/session/data/redis/config/annotation/web/http/EnableRedisHttpSession.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2002-2014 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.session.data.redis.config.annotation.web.http;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+
+/**
+ * Add this annotation to an {@code @Configuration} class to expose the
+ * SessionRepositoryFilter as a bean named "springSessionRepositoryFilter" and
+ * backed by Redis. In order to leverage the annotation, a single {@link RedisConnectionFactory}
+ * must be provided. For example:
+ *
+ * <code>
+ * &#064;Configuration
+ * &#064;EnableRedisHttpSession
+ * public class RedisHttpSessionConfig {
+ *
+ *     @Bean
+ *     public JedisConnectionFactory connectionFactory() throws Exception {
+ *         return new JedisConnectionFactory();
+ *     }
+ *
+ * }
+ * </code>
+ *
+ * More advanced configurations can extend {@link RedisHttpSessionConfiguration} instead.
+ *
+ * @author Rob Winch
+ * @since 1.0
+ */
+@Retention(value=java.lang.annotation.RetentionPolicy.RUNTIME)
+@Target(value={java.lang.annotation.ElementType.TYPE})
+@Documented
+@Import(RedisHttpSessionConfiguration.class)
+@Configuration
+public @interface EnableRedisHttpSession {}

spring-session/src/main/java/org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfiguration.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2002-2014 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.session.data.redis.config.annotation.web.http;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+import org.springframework.session.ExpiringSession;
+import org.springframework.session.SessionRepository;
+import org.springframework.session.data.redis.RedisOperationsSessionRepository;
+import org.springframework.session.web.http.SessionRepositoryFilter;
+
+/**
+ * Exposes the {@link SessionRepositoryFilter} as a bean named
+ * "springSessionRepositoryFilter". In order to use this a single
+ * {@link RedisConnectionFactory} must be exposed as a Bean.
+ *
+ * @author Rob Winch
+ * @since 1.0
+ *
+ * @see EnableRedisHttpSession
+ */
+@Configuration
+public class RedisHttpSessionConfiguration {
+
+    @Bean
+    public RedisTemplate<String,ExpiringSession> redisTemplate(RedisConnectionFactory connectionFactory) {
+        RedisTemplate<String, ExpiringSession> template = new RedisTemplate<String, ExpiringSession>();
+        template.setKeySerializer(new StringRedisSerializer());
+        template.setHashKeySerializer(new StringRedisSerializer());
+        template.setConnectionFactory(connectionFactory);
+        return template;
+    }
+
+    @Bean
+    public RedisOperationsSessionRepository sessionRepository(RedisTemplate<String, ExpiringSession> redisTemplate) {
+        return new RedisOperationsSessionRepository(redisTemplate);
+    }
+
+    @Bean
+    public <S extends ExpiringSession> SessionRepositoryFilter<? extends ExpiringSession> springSessionRepositoryFilter(SessionRepository<S> sessionRepository) {
+        return new SessionRepositoryFilter<S>(sessionRepository);
+    }
+}