| /* |
| * 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.util; |
| |
| import java.nio.charset.Charset; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| public class AdaptorNamingUtils { |
| |
| public static String synthesizeAdaptorID(String adaptorClassName, String dataType, |
| String params) throws NoSuchAlgorithmException { |
| MessageDigest md; |
| md = MessageDigest.getInstance("MD5"); |
| |
| md.update(adaptorClassName.getBytes(Charset.forName("UTF-8"))); |
| md.update(dataType.getBytes(Charset.forName("UTF-8"))); |
| md.update(params.getBytes(Charset.forName("UTF-8"))); |
| StringBuilder sb = new StringBuilder(); |
| sb.append("adaptor_"); |
| byte[] bytes = md.digest(); |
| for(int i=0; i < bytes.length; ++i) { |
| if( (bytes[i] & 0xF0) == 0) |
| sb.append('0'); |
| sb.append( Integer.toHexString(0xFF & bytes[i]) ); |
| } |
| return sb.toString(); |
| |
| } |
| |
| } |