| /* |
| * 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.hadoop.chukwa.extraction.demux.processor.mapper; |
| |
| |
| import java.nio.charset.Charset; |
| import java.util.Calendar; |
| |
| import org.apache.hadoop.chukwa.ChukwaArchiveKey; |
| import org.apache.hadoop.chukwa.Chunk; |
| import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord; |
| import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey; |
| import org.apache.hadoop.chukwa.extraction.engine.Record; |
| import org.apache.hadoop.chukwa.util.RecordConstants; |
| import org.apache.hadoop.mapred.OutputCollector; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.log4j.Logger; |
| |
| public abstract class AbstractProcessor implements MapProcessor { |
| static Logger log = Logger.getLogger(AbstractProcessor.class); |
| |
| Calendar calendar = Calendar.getInstance(); |
| byte[] bytes; |
| int[] recordOffsets; |
| protected int currentPos = 0; |
| protected int startOffset = 0; |
| |
| protected ChukwaArchiveKey archiveKey = null; |
| protected ChukwaRecordKey key = new ChukwaRecordKey(); |
| protected Chunk chunk = null; |
| |
| boolean chunkInErrorSaved = false; |
| OutputCollector<ChukwaRecordKey, ChukwaRecord> output = null; |
| Reporter reporter = null; |
| |
| public AbstractProcessor() { |
| } |
| |
| protected abstract void parse(String recordEntry, |
| OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter) |
| throws Throwable; |
| |
| protected void saveChunkInError(Throwable throwable) { |
| if (chunkInErrorSaved == false) { |
| try { |
| ChunkSaver.saveChunk(chunk, throwable, output, reporter); |
| chunkInErrorSaved = true; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| } |
| |
| public void process(ChukwaArchiveKey archiveKey, Chunk chunk, |
| OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter) { |
| chunkInErrorSaved = false; |
| |
| this.archiveKey = archiveKey; |
| this.output = output; |
| this.reporter = reporter; |
| |
| reset(chunk); |
| |
| while (hasNext()) { |
| try { |
| parse(nextLine(), output, reporter); |
| } catch (Throwable e) { |
| saveChunkInError(e); |
| } |
| } |
| } |
| |
| protected void buildGenericRecord(ChukwaRecord record, String body, |
| long timestamp, String dataSource) { |
| calendar.setTimeInMillis(timestamp); |
| calendar.set(Calendar.MINUTE, 0); |
| calendar.set(Calendar.SECOND, 0); |
| calendar.set(Calendar.MILLISECOND, 0); |
| |
| key.setKey("" + calendar.getTimeInMillis() + "/" + chunk.getSource() + "/" |
| + timestamp); |
| key.setReduceType(dataSource); |
| |
| if (body != null) { |
| record.add(Record.bodyField, body); |
| } |
| record.setTime(timestamp); |
| |
| record.add(Record.tagsField, chunk.getTags()); |
| record.add(Record.sourceField, chunk.getSource()); |
| record.add(Record.applicationField, chunk.getStreamName()); |
| |
| } |
| |
| protected void reset(Chunk chunk) { |
| this.chunk = chunk; |
| this.bytes = chunk.getData(); |
| this.recordOffsets = chunk.getRecordOffsets(); |
| currentPos = 0; |
| startOffset = 0; |
| } |
| |
| protected boolean hasNext() { |
| return (currentPos < recordOffsets.length); |
| } |
| |
| protected String nextLine() { |
| String log = new String(bytes, startOffset, (recordOffsets[currentPos] |
| - startOffset + 1), Charset.forName("UTF-8")); |
| startOffset = recordOffsets[currentPos] + 1; |
| currentPos++; |
| return RecordConstants.recoverRecordSeparators("\n", log); |
| } |
| |
| public int getCurrentPos() { |
| return currentPos; |
| } |
| |
| public void setCurrentPos(int currentPos) { |
| this.currentPos = currentPos; |
| } |
| |
| public int getStartOffset() { |
| return startOffset; |
| } |
| |
| public void setStartOffset(int startOffset) { |
| this.startOffset = startOffset; |
| } |
| } |