org.apache.flink.streaming.connectors.redis.common.hanlder.RedisMapperHandler Maven / Gradle / Ivy
/*
* 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.hanlder;
import org.apache.flink.streaming.connectors.redis.common.mapper.RedisMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Constructor;
import java.util.Map;
import static org.apache.flink.streaming.connectors.redis.descriptor.RedisValidator.REDIS_KEY_TTL;
/**
* handler for create redis mapper.
*/
public interface RedisMapperHandler extends RedisHandler {
Logger LOGGER = LoggerFactory.getLogger(RedisMapperHandler.class);
/**
* create a correct redis mapper use properties.
* @param properties to create redis mapper.
* @return redis mapper.
*/
default RedisMapper createRedisMapper(Map properties) {
String ttl = properties.get(REDIS_KEY_TTL);
try {
Class redisMapper = Class.forName(this.getClass().getCanonicalName());
if (ttl == null) {
return (RedisMapper) redisMapper.newInstance();
}
Constructor c = redisMapper.getConstructor(Integer.class);
return (RedisMapper) c.newInstance(Integer.parseInt(ttl));
} catch (Exception e) {
LOGGER.error("create redis mapper failed", e);
throw new RuntimeException(e);
}
}
}