| /* |
| * 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.engine.datasource.record; |
| |
| |
| import java.io.IOException; |
| import java.util.Date; |
| import java.util.LinkedList; |
| import java.util.List; |
| 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.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.io.SequenceFile; |
| |
| public class ChukwaSequenceFileParser { |
| |
| public static List<Record> readData(String cluster, String dataSource, |
| int maxRows, long t1, long t0, long maxOffset, String filter, |
| String fileName, FileSystem fs, Configuration conf) |
| throws MalformedFileFormat { |
| |
| // String source = "NameNode." + fileName; |
| List<Record> records = new LinkedList<Record>(); |
| SequenceFile.Reader r = null; |
| |
| int lineCount = 0; |
| if (filter != null) { |
| filter = filter.toLowerCase(); |
| } |
| |
| try { |
| |
| if (!fs.exists(new Path(fileName))) { |
| System.out.println("fileName not there!"); |
| return records; |
| } |
| System.out.println("NameNodeParser Open [" + fileName + "]"); |
| |
| r = new SequenceFile.Reader(fs, new Path(fileName), conf); |
| System.out.println("NameNodeParser Open2 [" + fileName + "]"); |
| |
| long timestamp = 0; |
| int listSize = 0; |
| |
| long offset = 0; |
| |
| // HdfsWriter.HdfsWriterKey key = new HdfsWriter.HdfsWriterKey(); |
| ChukwaRecordKey key = new ChukwaRecordKey(); |
| ChukwaRecord record = new ChukwaRecord(); |
| |
| while (r.next(key, record)) { |
| lineCount++; |
| |
| System.out.println("NameNodeParser Line [" |
| + record.getValue(Record.bodyField) + "]"); |
| |
| if (record != null) { |
| timestamp = record.getTime(); |
| if (timestamp < t0) { |
| System.out.println("Line not in range. Skipping: " |
| + record.getValue(Record.bodyField)); |
| System.out.println("Search for: " + new Date(t0) + " is :" |
| + new Date(timestamp)); |
| continue; |
| } else if ((timestamp < t1) && (offset < maxOffset)) // JB (epochTS < |
| // maxDate) |
| { |
| |
| System.out |
| .println("In Range: " + record.getValue(Record.bodyField)); |
| boolean valid = false; |
| |
| if ((filter == null || filter.equals(""))) { |
| valid = true; |
| } else if (isValid(record, filter)) { |
| valid = true; |
| } |
| |
| if (valid) { |
| records.add(record); |
| record = new ChukwaRecord(); |
| listSize = records.size(); |
| if (listSize > maxRows) { |
| records.remove(0); |
| System.out.println("==========>>>>>REMOVING: " |
| + record.getValue(Record.bodyField)); |
| } |
| } else { |
| System.out |
| .println("In Range ==================>>>>>>>>> OUT Regex: " |
| + record.getValue(Record.bodyField)); |
| } |
| |
| } else { |
| System.out.println("Line out of range. Stopping now: " |
| + record.getValue(Record.bodyField)); |
| break; |
| } |
| } |
| |
| } |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } finally { |
| System.out.println("File: " + fileName + " Line count: " + lineCount); |
| if (r != null) { |
| try { |
| r.close(); |
| } catch (IOException e) { |
| } |
| } |
| |
| } |
| return records; |
| } |
| |
| protected static boolean isValid(ChukwaRecord record, String filter) { |
| String[] fields = record.getFields(); |
| for (String field : fields) { |
| if (record.getValue(field).toLowerCase().indexOf(filter) >= 0) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |