Package org.apache.helix.taskexecution

Source Code of org.apache.helix.taskexecution.RedisTaskResultStore

package org.apache.helix.taskexecution;

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you 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.
*/

import java.util.List;
import java.util.Map;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class RedisTaskResultStore implements TaskResultStore {
  private JedisPool _jedisPool;

  public RedisTaskResultStore(String redisServer, int redisPort, int timeout) {
    _jedisPool = new JedisPool(new JedisPoolConfig(), redisServer,
        redisPort, timeout);
  }

  @Override
  public boolean exists(String key) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      return jedis.exists(key);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public void rpush(String key, String value) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      jedis.rpush(key, value);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public List<String> lrange(String key, long start, long end)
      throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      return jedis.lrange(key, start, end);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public void ltrim(String key, long start, long end) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      jedis.ltrim(key, start, end);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public long llen(String key) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      return jedis.llen(key);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public Long hincrBy(String key, String field, long value) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      return jedis.hincrBy(key, field, value);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }

  @Override
  public Map<String, String> hgetAll(String key) throws Exception {
    Jedis jedis = _jedisPool.getResource();
    try {
      return jedis.hgetAll(key);
    } finally {
      _jedisPool.returnResource(jedis);
    }
  }
}
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