/** * 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.storm.hbase.bolt; import backtype.storm.topology.OutputFieldsDeclarer; import backtype.storm.tuple.Tuple; import org.apache.hadoop.hbase.client.Durability; import org.apache.hadoop.hbase.client.Mutation; import org.apache.storm.hbase.bolt.mapper.HBaseMapper; import org.apache.storm.hbase.common.ColumnList; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.List; /** * Basic bolt for writing to HBase. * * Note: Each HBaseBolt defined in a topology is tied to a specific table. * */ public class HBaseBolt extends AbstractHBaseBolt { private static final Logger LOG = LoggerFactory.getLogger(HBaseBolt.class); boolean writeToWAL = true; public HBaseBolt(String tableName, HBaseMapper mapper) { super(tableName, mapper); } public HBaseBolt writeToWAL(boolean writeToWAL) { this.writeToWAL = writeToWAL; return this; } public HBaseBolt withConfigKey(String configKey) { this.configKey = configKey; return this; } @Override public void execute(Tuple tuple) { byte[] rowKey = this.mapper.rowKey(tuple); ColumnList cols = this.mapper.columns(tuple); List<Mutation> mutations = hBaseClient.constructMutationReq(rowKey, cols, writeToWAL? Durability.SYNC_WAL : Durability.SKIP_WAL); try { this.hBaseClient.batchMutate(mutations); } catch(Exception e){ LOG.warn("Failing tuple. Error writing rowKey " + rowKey, e); this.collector.fail(tuple); return; } this.collector.ack(tuple); } @Override public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) { } }