001 /* 002 * Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021 package cascading.tap.hadoop.util; 022 023 import java.io.Closeable; 024 import java.io.IOException; 025 026 import cascading.flow.FlowProcess; 027 import org.apache.hadoop.mapred.OutputCollector; 028 029 /** 030 * 031 */ 032 public class MeasuredOutputCollector implements OutputCollector, Closeable 033 { 034 private final FlowProcess flowProcess; 035 private final Enum counter; 036 037 private OutputCollector outputCollector; 038 039 public MeasuredOutputCollector( FlowProcess flowProcess, Enum counter ) 040 { 041 this.flowProcess = flowProcess; 042 this.counter = counter; 043 } 044 045 public MeasuredOutputCollector( FlowProcess flowProcess, Enum counter, OutputCollector outputCollector ) 046 { 047 this.flowProcess = flowProcess; 048 this.counter = counter; 049 this.outputCollector = outputCollector; 050 } 051 052 public OutputCollector getOutputCollector() 053 { 054 return outputCollector; 055 } 056 057 public void setOutputCollector( OutputCollector outputCollector ) 058 { 059 this.outputCollector = outputCollector; 060 } 061 062 @Override 063 public void collect( Object key, Object value ) throws IOException 064 { 065 long start = System.currentTimeMillis(); 066 067 try 068 { 069 outputCollector.collect( key, value ); 070 } 071 finally 072 { 073 flowProcess.increment( counter, System.currentTimeMillis() - start ); 074 } 075 } 076 077 @Override 078 public void close() throws IOException 079 { 080 if( outputCollector instanceof Closeable ) 081 ( (Closeable) outputCollector ).close(); 082 } 083 }