| /* |
| * 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. |
| */ |
| package org.apache.flink.streaming.connectors.redis.common.container; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import redis.clients.jedis.Jedis; |
| import redis.clients.jedis.JedisPool; |
| import redis.clients.jedis.JedisSentinelPool; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.Objects; |
| |
| /** |
| * Redis command container if we want to connect to a single Redis server or to Redis sentinels |
| * If want to connect to a single Redis server, please use the first constructor {@link #RedisContainer(JedisPool)}. |
| * If want to connect to a Redis sentinels, please use the second constructor {@link #RedisContainer(JedisSentinelPool)} |
| */ |
| public class RedisContainer implements RedisCommandsContainer, Closeable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final Logger LOG = LoggerFactory.getLogger(RedisContainer.class); |
| |
| private transient JedisPool jedisPool; |
| private transient JedisSentinelPool jedisSentinelPool; |
| |
| /** |
| * Use this constructor if to connect with single Redis server. |
| * |
| * @param jedisPool JedisPool which actually manages Jedis instances |
| */ |
| public RedisContainer(JedisPool jedisPool) { |
| Objects.requireNonNull(jedisPool, "Jedis Pool can not be null"); |
| this.jedisPool = jedisPool; |
| this.jedisSentinelPool = null; |
| } |
| |
| /** |
| * Use this constructor if Redis environment is clustered with sentinels. |
| * |
| * @param sentinelPool SentinelPool which actually manages Jedis instances |
| */ |
| public RedisContainer(final JedisSentinelPool sentinelPool) { |
| Objects.requireNonNull(sentinelPool, "Jedis Sentinel Pool can not be null"); |
| this.jedisPool = null; |
| this.jedisSentinelPool = sentinelPool; |
| } |
| |
| /** |
| * Closes the Jedis instances. |
| */ |
| @Override |
| public void close() throws IOException { |
| if (this.jedisPool != null) { |
| this.jedisPool.close(); |
| } |
| if (this.jedisSentinelPool != null) { |
| this.jedisSentinelPool.close(); |
| } |
| } |
| |
| @Override |
| public void open() throws Exception { |
| |
| // echo() tries to open a connection and echos back the |
| // message passed as argument. Here we use it to monitor |
| // if we can communicate with the cluster. |
| |
| getInstance().echo("Test"); |
| } |
| |
| @Override |
| public void hset(final String key, final String hashField, final String value, final Integer ttl) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.hset(key, hashField, value); |
| if (ttl != null) { |
| jedis.expire(key, ttl); |
| } |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command HSET to key {} and hashField {} error message {}", |
| key, hashField, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void rpush(final String listName, final String value) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.rpush(listName, value); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command RPUSH to list {} error message {}", |
| listName, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void lpush(String listName, String value) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.lpush(listName, value); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command LUSH to list {} error message {}", |
| listName, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void sadd(final String setName, final String value) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.sadd(setName, value); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command RPUSH to set {} error message {}", |
| setName, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void publish(final String channelName, final String message) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.publish(channelName, message); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command PUBLISH to channel {} error message {}", |
| channelName, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void set(final String key, final String value) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.set(key, value); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command SET to key {} error message {}", |
| key, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void setex(final String key, final String value, final Integer ttl) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.setex(key, ttl, value); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command SETEX to key {} error message {}", |
| key, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void pfadd(final String key, final String element) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.pfadd(key, element); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command PFADD to key {} error message {}", |
| key, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void zadd(final String key, final String score, final String element) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.zadd(key, Double.valueOf(score), element); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command ZADD to set {} error message {}", |
| key, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| @Override |
| public void zrem(final String key, final String element) { |
| Jedis jedis = null; |
| try { |
| jedis = getInstance(); |
| jedis.zrem(key, element); |
| } catch (Exception e) { |
| if (LOG.isErrorEnabled()) { |
| LOG.error("Cannot send Redis message with command ZREM to set {} error message {}", |
| key, e.getMessage()); |
| } |
| throw e; |
| } finally { |
| releaseInstance(jedis); |
| } |
| } |
| |
| /** |
| * Returns Jedis instance from the pool. |
| * |
| * @return the Jedis instance |
| */ |
| private Jedis getInstance() { |
| if (jedisSentinelPool != null) { |
| return jedisSentinelPool.getResource(); |
| } else { |
| return jedisPool.getResource(); |
| } |
| } |
| |
| /** |
| * Closes the jedis instance after finishing the command. |
| * |
| * @param jedis The jedis instance |
| */ |
| private void releaseInstance(final Jedis jedis) { |
| if (jedis == null) { |
| return; |
| } |
| try { |
| jedis.close(); |
| } catch (Exception e) { |
| LOG.error("Failed to close (return) instance to pool", e); |
| } |
| } |
| } |