/**
* 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.trident.mapper;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Tuple;
import org.apache.storm.hbase.bolt.mapper.HBaseMapper;
import org.apache.storm.hbase.common.ColumnList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import storm.trident.tuple.TridentTuple;
import static org.apache.storm.hbase.common.Utils.toBytes;
import static org.apache.storm.hbase.common.Utils.toLong;
/**
*
*/
public class SimpleTridentHBaseMapper implements TridentHBaseMapper {
private static final Logger LOG = LoggerFactory.getLogger(SimpleTridentHBaseMapper.class);
private String rowKeyField;
private byte[] columnFamily;
private Fields columnFields;
private Fields counterFields;
public SimpleTridentHBaseMapper(){
}
public SimpleTridentHBaseMapper withRowKeyField(String rowKeyField){
this.rowKeyField = rowKeyField;
return this;
}
public SimpleTridentHBaseMapper withColumnFields(Fields columnFields){
this.columnFields = columnFields;
return this;
}
public SimpleTridentHBaseMapper withCounterFields(Fields counterFields){
this.counterFields = counterFields;
return this;
}
public SimpleTridentHBaseMapper withColumnFamily(String columnFamily){
this.columnFamily = columnFamily.getBytes();
return this;
}
@Override
public byte[] rowKey(TridentTuple tuple) {
Object objVal = tuple.getValueByField(this.rowKeyField);
return toBytes(objVal);
}
@Override
public ColumnList columns(TridentTuple tuple) {
ColumnList cols = new ColumnList();
if(this.columnFields != null){
// TODO timestamps
for(String field : this.columnFields){
cols.addColumn(this.columnFamily, field.getBytes(), toBytes(tuple.getValueByField(field)));
}
}
if(this.counterFields != null){
for(String field : this.counterFields){
cols.addCounter(this.columnFamily, field.getBytes(), toLong(tuple.getValueByField(field)));
}
}
return cols;
}
}