| /* |
| * 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 samza.examples.wikipedia.model; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import samza.examples.wikipedia.system.WikipediaFeed; |
| |
| |
| public class WikipediaParser { |
| public static Map<String, Object> parseEvent(WikipediaFeed.WikipediaFeedEvent wikipediaFeedEvent) { |
| Map<String, Object> parsedJsonObject = null; |
| try { |
| parsedJsonObject = WikipediaParser.parseLine(wikipediaFeedEvent.getRawEvent()); |
| |
| parsedJsonObject.put("channel", wikipediaFeedEvent.getChannel()); |
| parsedJsonObject.put("source", wikipediaFeedEvent.getSource()); |
| parsedJsonObject.put("time", wikipediaFeedEvent.getTime()); |
| } catch (Exception e) { |
| System.err.println("Unable to parse line: " + wikipediaFeedEvent); |
| } |
| return parsedJsonObject; |
| } |
| |
| public static Map<String, Object> parseLine(String line) { |
| Pattern p = Pattern.compile("\\[\\[(.*)\\]\\]\\s(.*)\\s(.*)\\s\\*\\s(.*)\\s\\*\\s\\(\\+?(.\\d*)\\)\\s(.*)"); |
| Matcher m = p.matcher(line); |
| |
| if (m.find() && m.groupCount() == 6) { |
| String title = m.group(1); |
| String flags = m.group(2); |
| String diffUrl = m.group(3); |
| String user = m.group(4); |
| int byteDiff = Integer.parseInt(m.group(5)); |
| String summary = m.group(6); |
| |
| Map<String, Boolean> flagMap = new HashMap<String, Boolean>(); |
| |
| flagMap.put("is-minor", flags.contains("M")); |
| flagMap.put("is-new", flags.contains("N")); |
| flagMap.put("is-unpatrolled", flags.contains("!")); |
| flagMap.put("is-bot-edit", flags.contains("B")); |
| flagMap.put("is-special", title.startsWith("Special:")); |
| flagMap.put("is-talk", title.startsWith("Talk:")); |
| |
| Map<String, Object> root = new HashMap<String, Object>(); |
| |
| root.put("title", title); |
| root.put("user", user); |
| root.put("unparsed-flags", flags); |
| root.put("diff-bytes", byteDiff); |
| root.put("diff-url", diffUrl); |
| root.put("summary", summary); |
| root.put("flags", flagMap); |
| |
| return root; |
| } else { |
| throw new IllegalArgumentException(); |
| } |
| } |
| } |