| /* |
| * 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.nutch.net; |
| |
| import java.net.MalformedURLException; |
| |
| import org.apache.hadoop.util.ToolRunner; |
| |
| import org.apache.nutch.util.AbstractChecker; |
| import org.apache.nutch.util.NutchConfiguration; |
| |
| /** |
| * Checks one given normalizer or all normalizers. |
| */ |
| public class URLNormalizerChecker extends AbstractChecker { |
| |
| private String scope = URLNormalizers.SCOPE_DEFAULT; |
| URLNormalizers normalizers; |
| |
| public int run(String[] args) throws Exception { |
| usage = "Usage: URLNormalizerChecker [-Dproperty=value]... [-normalizer <normalizerName>] [-scope <scope>] (-stdin | -listen <port> [-keepClientCnxOpen])\n" |
| + "\n -normalizer\tURL normalizer plugin (eg. urlnormalizer-basic) to check," |
| + "\n \t(if not given all configured URL normalizers are applied)" |
| + "\n -scope \tone of: default,partition,generate_host_count,fetcher,crawldb,linkdb,inject,outlink" |
| + "\n -stdin \ttool reads a list of URLs from stdin, one URL per line" |
| + "\n -listen <port>\trun tool as Telnet server listening on <port>" |
| + "\n\nAn empty line is added to the output if a URL fails to normalize (MalformedURLException or null returned).\n"; |
| |
| // Print help when no args given |
| if (args.length < 1) { |
| System.err.println(usage); |
| System.exit(-1); |
| } |
| |
| int numConsumed; |
| for (int i = 0; i < args.length; i++) { |
| if (args[i].equals("-normalizer")) { |
| getConf().set("plugin.includes", args[++i]); |
| } else if (args[i].equals("-scope")) { |
| scope = args[++i]; |
| } else if ((numConsumed = super.parseArgs(args, i)) > 0) { |
| i += numConsumed - 1; |
| } else { |
| System.err.println("ERROR: Not a recognized argument: " + args[i]); |
| System.err.println(usage); |
| System.exit(-1); |
| } |
| } |
| |
| // Print active normalizer list |
| normalizers = new URLNormalizers(getConf(), scope); |
| System.out.print("Checking combination of these URLNormalizers: "); |
| for (URLNormalizer normalizer : normalizers.getURLNormalizers(scope)) { |
| System.out.print(normalizer.getClass().getSimpleName() + " "); |
| } |
| System.out.println(""); |
| |
| // Start listening |
| return super.run(); |
| } |
| |
| protected int process(String line, StringBuilder output) throws Exception { |
| try { |
| String norm = normalizers.normalize(line, scope); |
| if (norm == null) { |
| output.append(""); |
| } else { |
| output.append(norm); |
| } |
| } catch (MalformedURLException e) { |
| output.append(""); |
| } |
| return 0; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| final int res = ToolRunner.run(NutchConfiguration.create(), |
| new URLNormalizerChecker(), args); |
| System.exit(res); |
| } |
| } |