content: /**
   * 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 backtype.storm.command;
  
  import backtype.storm.GenericOptionsParser;
  import backtype.storm.StormSubmitter;
  import backtype.storm.utils.NimbusClient;
  import backtype.storm.utils.Utils;
  import org.apache.commons.cli.*;
  
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * update a topology dynamically
   *
   * @author xiaojian.fxj
   * @since 2.1.0
   */
  public class update_topology {
  
      public static void usage() {
          System.out.println("update topology config, please do as following:");
          System.out.println("update_topology topologyName -conf configFile");
  
          System.out.println("update topology jar, please do as following:");
          System.out.println("update_topology topologyName -jar jarFile");
  
          System.out.println("update topology jar and conf, please do as following:");
          System.out.println("update_topology topologyName -jar jarFile -conf configFile");
      }
  
      private static Options buildGeneralOptions(Options opts) {
          Options r = new Options();
  
          for (Object o : opts.getOptions())
              r.addOption((Option) o);
  
          Option jar = OptionBuilder.withArgName("path").hasArg()
                  .withDescription("topology jar of the submitted topology").create("jar");
          r.addOption(jar);
  
          Option conf = OptionBuilder.withArgName("configuration file").hasArg()
                  .withDescription("an application configuration file").create("conf");
  
          r.addOption(conf);
  
          return r;
      }
  
      private static void updateTopology(String topologyName, String pathJar, String pathConf) {
          NimbusClient client;
          Map loadMap;
          if (pathConf != null) {
              loadMap = Utils.loadConf(pathConf);
          } else {
              loadMap = new HashMap();
          }
  
          Map conf = Utils.readStormConfig();
  
          conf.putAll(loadMap);
          client = NimbusClient.getConfiguredClient(conf);
          try {
              // update jar
              String uploadLocation;
              String path = client.getClient().beginFileUpload();
              if (pathJar != null) {
                  System.out.println("Jar has not been submitted to master yet. Submitting jar of " + pathJar);
                  String[] pathCache = path.split("/");
                  uploadLocation = path + "/stormjar-" + pathCache[pathCache.length - 1] + ".jar";
                  List<String> lib = (List<String>) conf.get(GenericOptionsParser.TOPOLOGY_LIB_NAME);
                  Map<String, String> libPath = (Map<String, String>) conf.get(GenericOptionsParser.TOPOLOGY_LIB_PATH);
                  if (lib != null && lib.size() != 0) {
                      for (String libName : lib) {
                          String jarPath = path + "/lib/" + libName;
                          client.getClient().beginLibUpload(jarPath);
                          StormSubmitter.submitJar(conf, libPath.get(libName), jarPath, client);
                      }
  
                  }
                  StormSubmitter.submitJar(conf, pathJar, uploadLocation, client);
              }
  
              // update topology
              String jsonConf = Utils.to_json(loadMap);
              System.out.println("New configuration:\n" + jsonConf);
  
              client.getClient().updateTopology(topologyName, path, jsonConf);
  
              System.out.println("Successfully submit command update " + topologyName);
  
          } catch (Exception e) {
              e.printStackTrace();
              throw new RuntimeException(e);
          } finally {
              if (client != null) {
                  client.close();
              }
          }
      }
  
      public static void main(String[] args) {
          if (args == null || args.length < 3) {
              System.out.println("Invalid parameter");
              usage();
              return;
          }
          String topologyName = args[0];
          try {
              String[] str2 = Arrays.copyOfRange(args, 1, args.length);
              CommandLineParser parser = new GnuParser();
              Options r = buildGeneralOptions(new Options());
              CommandLine commandLine = parser.parse(r, str2, true);
  
              String pathConf = null;
              String pathJar = null;
              if (commandLine.hasOption("conf")) {
                  pathConf = (commandLine.getOptionValues("conf"))[0];
              }
              if (commandLine.hasOption("jar")) {
                  pathJar = (commandLine.getOptionValues("jar"))[0];
              }
              if (pathConf != null || pathJar != null)
                  updateTopology(topologyName, pathJar, pathConf);
          } catch (Exception e) {
              e.printStackTrace();
          }
      }
  }
  