| /* |
| * 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.hbase; |
| |
| |
| import java.util.HashMap; |
| import org.apache.log4j.Logger; |
| |
| public class ProcessorFactory { |
| static Logger log = Logger.getLogger(ProcessorFactory.class); |
| |
| private static HashMap<String, AbstractProcessor> processors = new HashMap<String, AbstractProcessor>(); // registry |
| |
| public ProcessorFactory() { |
| } |
| |
| public static AbstractProcessor getProcessor(String parserClass) |
| throws UnknownRecordTypeException { |
| if (processors.containsKey(parserClass)) { |
| return processors.get(parserClass); |
| } else { |
| AbstractProcessor processor = null; |
| try { |
| processor = (AbstractProcessor) Class.forName(parserClass).getConstructor() |
| .newInstance(); |
| } catch (ClassNotFoundException e) { |
| throw new UnknownRecordTypeException("Unknown parserClass:" |
| + parserClass, e); |
| } catch (Exception e) { |
| throw new UnknownRecordTypeException("error constructing processor", e); |
| } |
| |
| // TODO using a ThreadSafe/reuse flag to actually decide if we want |
| // to reuse the same processor again and again |
| processors.put(parserClass, processor); |
| return processor; |
| } |
| } |
| } |