| /* |
| * 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.seatunnel.connectors.seatunnel.redis.source; |
| |
| import org.apache.seatunnel.api.serialization.DeserializationSchema; |
| import org.apache.seatunnel.api.source.Collector; |
| import org.apache.seatunnel.api.table.type.SeaTunnelRow; |
| import org.apache.seatunnel.connectors.seatunnel.common.source.AbstractSingleSplitReader; |
| import org.apache.seatunnel.connectors.seatunnel.common.source.SingleSplitReaderContext; |
| import org.apache.seatunnel.connectors.seatunnel.redis.config.RedisDataType; |
| import org.apache.seatunnel.connectors.seatunnel.redis.config.RedisParameters; |
| |
| import redis.clients.jedis.Jedis; |
| |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| public class RedisSourceReader extends AbstractSingleSplitReader<SeaTunnelRow> { |
| private final RedisParameters redisParameters; |
| private final SingleSplitReaderContext context; |
| private final DeserializationSchema<SeaTunnelRow> deserializationSchema; |
| private Jedis jedis; |
| |
| public RedisSourceReader(RedisParameters redisParameters, SingleSplitReaderContext context, DeserializationSchema<SeaTunnelRow> deserializationSchema) { |
| this.redisParameters = redisParameters; |
| this.context = context; |
| this.deserializationSchema = deserializationSchema; |
| } |
| |
| @Override |
| public void open() throws Exception { |
| this.jedis = redisParameters.buildJedis(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if (Objects.nonNull(jedis)) { |
| jedis.close(); |
| } |
| } |
| |
| @Override |
| public void pollNext(Collector<SeaTunnelRow> output) throws Exception { |
| Set<String> keys = jedis.keys(redisParameters.getKeysPattern()); |
| RedisDataType redisDataType = redisParameters.getRedisDataType(); |
| for (String key : keys) { |
| List<String> values = redisDataType.get(jedis, key); |
| for (String value : values) { |
| if (deserializationSchema == null) { |
| output.collect(new SeaTunnelRow(new Object[]{value})); |
| } else { |
| deserializationSchema.deserialize(value.getBytes(), output); |
| } |
| } |
| } |
| context.signalNoMoreElement(); |
| } |
| } |