| /* |
| * 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.ranger.usergroupsync; |
| |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.apache.ranger.unixusersync.config.UserGroupSyncConfig; |
| |
| public class RegEx extends AbstractMapper { |
| private UserGroupSyncConfig config = UserGroupSyncConfig.getInstance(); |
| private LinkedHashMap<String, String> replacementPattern; |
| |
| public LinkedHashMap<String, String> getReplacementPattern() { |
| return replacementPattern; |
| } |
| |
| @Override |
| public void init (String baseProperty) { |
| logger.info("Initializing for " + baseProperty); |
| try { |
| List<String> regexPatterns = config.getAllRegexPatterns(baseProperty); |
| populateReplacementPatterns(baseProperty, regexPatterns); |
| } catch (Throwable t) { |
| logger.error("Failed to initialize " + baseProperty, t.fillInStackTrace()); |
| } |
| } |
| |
| protected void populateReplacementPatterns(String baseProperty, List<String> regexPatterns) throws Throwable{ |
| replacementPattern = new LinkedHashMap<String, String>(); |
| Pattern p = Pattern.compile("s/([^/]*)/([^/]*)/(g)?"); |
| for (String regexPattern : regexPatterns) { |
| Matcher m = p.matcher(regexPattern); |
| if (!m.matches()) { |
| logger.warn("Invalid RegEx " + regexPattern + " and hence skipping this regex property"); |
| } |
| m = m.reset(); |
| while (m.find()) { |
| String matchPattern = m.group(1); |
| String replacement = m.group(2); |
| if (matchPattern != null && !matchPattern.isEmpty() && replacement != null) { |
| replacementPattern.put(matchPattern, replacement); |
| if (logger.isDebugEnabled()) { |
| logger.debug(baseProperty + " match pattern = " + matchPattern + " and replacement string = " + replacement); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public String transform (String attrValue) { |
| String result = attrValue; |
| try { |
| if (replacementPattern != null && !replacementPattern.isEmpty()) { |
| for (String matchPattern : replacementPattern.keySet()) { |
| Pattern p = Pattern.compile(matchPattern); |
| Matcher m = p.matcher(result); |
| if (m.find()) { |
| String replacement = replacementPattern.get(matchPattern); |
| if (replacement != null) { |
| result = m.replaceAll(replacement); |
| } |
| } |
| } |
| } |
| } catch (Throwable t) { |
| logger.error("Failed to transform " + attrValue, t.fillInStackTrace()); |
| } |
| return result; |
| } |
| } |