001/* 002 * Copyright (c) 2007-2017 Xplenty, 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 021package cascading.tap.hadoop.util; 022 023import java.io.IOException; 024 025import cascading.flow.FlowProcess; 026import org.apache.hadoop.mapred.RecordReader; 027 028/** 029 * 030 */ 031public class MeasuredRecordReader implements RecordReader 032 { 033 private final FlowProcess flowProcess; 034 private final Enum counter; 035 036 private RecordReader recordReader; 037 038 public MeasuredRecordReader( FlowProcess flowProcess, Enum counter ) 039 { 040 this.flowProcess = flowProcess; 041 this.counter = counter; 042 } 043 044 public RecordReader getRecordReader() 045 { 046 return recordReader; 047 } 048 049 public void setRecordReader( RecordReader recordReader ) 050 { 051 this.recordReader = recordReader; 052 } 053 054 @Override 055 public boolean next( Object key, Object value ) throws IOException 056 { 057 long start = System.currentTimeMillis(); 058 059 try 060 { 061 return recordReader.next( key, value ); 062 } 063 finally 064 { 065 flowProcess.increment( counter, System.currentTimeMillis() - start ); 066 } 067 } 068 069 @Override 070 public Object createKey() 071 { 072 long start = System.currentTimeMillis(); 073 074 try 075 { 076 return recordReader.createKey(); 077 } 078 finally 079 { 080 flowProcess.increment( counter, System.currentTimeMillis() - start ); 081 } 082 } 083 084 @Override 085 public Object createValue() 086 { 087 long start = System.currentTimeMillis(); 088 089 try 090 { 091 return recordReader.createValue(); 092 } 093 finally 094 { 095 flowProcess.increment( counter, System.currentTimeMillis() - start ); 096 } 097 } 098 099 @Override 100 public long getPos() throws IOException 101 { 102 return recordReader.getPos(); 103 } 104 105 @Override 106 public void close() throws IOException 107 { 108 long start = System.currentTimeMillis(); 109 110 try 111 { 112 recordReader.close(); 113 } 114 finally 115 { 116 flowProcess.increment( counter, System.currentTimeMillis() - start ); 117 } 118 } 119 120 @Override 121 public float getProgress() throws IOException 122 { 123 long start = System.currentTimeMillis(); 124 125 try 126 { 127 return recordReader.getProgress(); 128 } 129 finally 130 { 131 flowProcess.increment( counter, System.currentTimeMillis() - start ); 132 } 133 } 134 }