HBaseDataSink.java

/***********************************************************************************************************************
 * Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
 *
 * Licensed 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 eu.stratosphere.addons.hbase;

import java.util.Random;

import eu.stratosphere.api.java.record.operators.GenericDataSink;
import eu.stratosphere.api.common.operators.Operator;

/**
 * A sink for writing to HBase
 */
public class HBaseDataSink extends GenericDataSink {
	
	private static final int IDENTIFYIER_LEN = 16;
	
	public HBaseDataSink(GenericTableOutputFormat f, Operator input, String name) {
		super(f, input, name);
		
		// generate a random unique identifier string
		final Random rnd = new Random();
		final StringBuilder bld = new StringBuilder();
		for (int i = 0; i < IDENTIFYIER_LEN; i++) {
			bld.append((char) (rnd.nextInt(26) + 'a'));
		}
		
		setParameter(GenericTableOutputFormat.JT_ID_KEY, bld.toString());
		setParameter(GenericTableOutputFormat.JOB_ID_KEY, rnd.nextInt());
	}
}