RedisCacheFactory.java

/*
 * Copyright 2013-2014 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.cloud.aws.cache.redis;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.cache.Cache;
import org.springframework.cloud.aws.cache.AbstractCacheFactory;
import org.springframework.data.redis.cache.RedisCache;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.ClassUtils;

/**
 * @author Agim Emruli
 */
public class RedisCacheFactory extends AbstractCacheFactory<RedisConnectionFactory> {

    private static final boolean JEDIS_AVAILABLE = ClassUtils.isPresent("redis.clients.jedis.Jedis", ClassUtils.getDefaultClassLoader());
    private static final boolean LETTUCE_AVAILABLE = ClassUtils.isPresent("com.lambdaworks.redis.RedisClient", ClassUtils.getDefaultClassLoader());

    @Override
    public boolean isSupportingCacheArchitecture(String architecture) {
        return "redis".equalsIgnoreCase(architecture);
    }

    @Override
    public Cache createCache(String cacheName, String host, int port) throws Exception {
        return new RedisCache(cacheName, null, getRedisTemplate(getConnectionFactory(host, port)), getExpiryTime(cacheName));
    }

    @Override
    protected void destroyConnectionClient(RedisConnectionFactory connectionClient) throws Exception {
        if (connectionClient instanceof DisposableBean) {
            ((DisposableBean) connectionClient).destroy();
        }
    }

    @Override
    protected RedisConnectionFactory createConnectionClient(String hostName, int port) {
        if (JEDIS_AVAILABLE) {
            JedisConnectionFactory connectionFactory = new JedisConnectionFactory();
            connectionFactory.setHostName(hostName);
            connectionFactory.setPort(port);
            return connectionFactory;
        } else if (LETTUCE_AVAILABLE) {
            LettuceConnectionFactory lettuceConnectionFactory = new LettuceConnectionFactory();
            lettuceConnectionFactory.setHostName(hostName);
            lettuceConnectionFactory.setPort(port);
            return lettuceConnectionFactory;
        } else {
            throw new IllegalArgumentException("No Jedis, Jredis, SRP or lettuce redis client on classpath. " +
                    "Please add one of the implementation to your classpath");
        }
    }

    protected RedisTemplate<?, ?> getRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<?, ?> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
}