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 org.apache.kafka.tools.consumer.group;
  
  import org.apache.kafka.server.util.CommandDefaultOptions;
  import org.apache.kafka.server.util.CommandLineUtils;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Arrays;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  import java.util.stream.Collectors;
  
  import joptsimple.OptionSpec;
  
  import static org.apache.kafka.tools.ToolsUtils.minus;
  
  public class ShareGroupCommandOptions extends CommandDefaultOptions {
      private static final Logger LOGGER = LoggerFactory.getLogger(ShareGroupCommandOptions.class);
  
      private static final String BOOTSTRAP_SERVER_DOC = "REQUIRED: The server(s) to connect to.";
      private static final String GROUP_DOC = "The share group we wish to act on.";
      private static final String TOPIC_DOC = "The topic whose offset information should be deleted or included in the reset offset process. " +
          "When resetting offsets, partitions can be specified using this format: 'topic1:0,1,2', where 0,1,2 are the partitions to be included.";
      private static final String ALL_TOPICS_DOC = "Consider all topics assigned to a share group in the 'reset-offsets' process.";
      private static final String LIST_DOC = "List all share groups.";
      private static final String DESCRIBE_DOC = "Describe share group, members and offset information.";
      private static final String ALL_GROUPS_DOC = "Apply to all share groups.";
      private static final String NL = System.lineSeparator();
      private static final String DELETE_DOC = "Delete share group.";
      private static final String TIMEOUT_MS_DOC = "The timeout that can be set for some use cases. For example, it can be used when describing the group " +
          "to specify the maximum amount of time in milliseconds to wait before the group stabilizes.";
      private static final String COMMAND_CONFIG_DOC = "Property file containing configs to be passed to Admin Client.";
      private static final String RESET_OFFSETS_DOC = "Reset offsets of share group. Supports one share group at the time, and instances must be inactive." + NL +
          "Has 2 execution options: --dry-run (the default) to plan which offsets to reset, and --execute to reset the offsets. " + NL +
          "You must choose one of the following reset specifications: --to-datetime, --to-earliest, --to-latest." + NL +
          "To define the scope use --all-topics or --topic.";
      private static final String DRY_RUN_DOC = "Only show results without executing changes on share groups. Supported operations: reset-offsets.";
      private static final String EXECUTE_DOC = "Execute operation. Supported operations: reset-offsets.";
      private static final String RESET_TO_DATETIME_DOC = "Reset offsets to offset from datetime. Format: 'YYYY-MM-DDThh:mm:ss.sss'";
      private static final String RESET_TO_EARLIEST_DOC = "Reset offsets to earliest offset.";
      private static final String RESET_TO_LATEST_DOC = "Reset offsets to latest offset.";
      private static final String MEMBERS_DOC = "Describe members of the group. This option may be used with the '--describe' option only.";
      private static final String OFFSETS_DOC = "Describe the group and list all topic partitions in the group along with their offset information. " +
          "This is the default sub-action and may be used with the '--describe' option only.";
      private static final String STATE_DOC = "When specified with '--describe', includes the state of the group." + NL +
          "When specified with '--list', it displays the state of all groups. It can also be used to list groups with specific states. " +
          "Valid values are Empty, Stable and Dead.";
      private static final String VERBOSE_DOC = "Provide additional information, if any, when describing the group. This option may be used " +
          "with the '--describe' option only.";
      private static final String DELETE_OFFSETS_DOC = "Delete offsets of share group. Supports one share group at the time, and multiple topics.";
  
      final OptionSpec<String> bootstrapServerOpt;
      final OptionSpec<String> groupOpt;
      final OptionSpec<String> topicOpt;
      final OptionSpec<Void> allTopicsOpt;
      final OptionSpec<Void> listOpt;
      final OptionSpec<Void> describeOpt;
      final OptionSpec<Void> allGroupsOpt;
      final OptionSpec<Void> deleteOpt;
      final OptionSpec<Long> timeoutMsOpt;
      final OptionSpec<String> commandConfigOpt;
      final OptionSpec<Void> resetOffsetsOpt;
      final OptionSpec<Void> deleteOffsetsOpt;
      final OptionSpec<Void> dryRunOpt;
      final OptionSpec<Void> executeOpt;
      final OptionSpec<String> resetToDatetimeOpt;
      final OptionSpec<Void> resetToEarliestOpt;
      final OptionSpec<Void> resetToLatestOpt;
      final OptionSpec<Void> membersOpt;
      final OptionSpec<Void> offsetsOpt;
      final OptionSpec<String> stateOpt;
      final OptionSpec<Void> verboseOpt;
  
      final Set<OptionSpec<?>> allGroupSelectionScopeOpts;
      final Set<OptionSpec<?>> allShareGroupLevelOpts;
      final Set<OptionSpec<?>> allResetOffsetScenarioOpts;
      final Set<OptionSpec<?>> allDeleteOffsetsOpts;
  
      public ShareGroupCommandOptions(String[] args) {
          super(args);
  
          bootstrapServerOpt = parser.accepts("bootstrap-server", BOOTSTRAP_SERVER_DOC)
              .withRequiredArg()
              .describedAs("server to connect to")
              .ofType(String.class);
          groupOpt = parser.accepts("group", GROUP_DOC)
              .withRequiredArg()
              .describedAs("share group")
              .ofType(String.class);
          topicOpt = parser.accepts("topic", TOPIC_DOC)
              .withRequiredArg()
              .describedAs("topic")
              .ofType(String.class);
          allTopicsOpt = parser.accepts("all-topics", ALL_TOPICS_DOC);
          listOpt = parser.accepts("list", LIST_DOC);
          describeOpt = parser.accepts("describe", DESCRIBE_DOC);
          allGroupsOpt = parser.accepts("all-groups", ALL_GROUPS_DOC);
          deleteOpt = parser.accepts("delete", DELETE_DOC);
          timeoutMsOpt = parser.accepts("timeout", TIMEOUT_MS_DOC)
              .withRequiredArg()
              .describedAs("timeout (ms)")
              .ofType(Long.class)
              .defaultsTo(30000L);
          commandConfigOpt = parser.accepts("command-config", COMMAND_CONFIG_DOC)
              .withRequiredArg()
              .describedAs("command config property file")
              .ofType(String.class);
          resetOffsetsOpt = parser.accepts("reset-offsets", RESET_OFFSETS_DOC);
          deleteOffsetsOpt = parser.accepts("delete-offsets", DELETE_OFFSETS_DOC);
          dryRunOpt = parser.accepts("dry-run", DRY_RUN_DOC);
          executeOpt = parser.accepts("execute", EXECUTE_DOC);
          resetToDatetimeOpt = parser.accepts("to-datetime", RESET_TO_DATETIME_DOC)
              .withRequiredArg()
              .describedAs("datetime")
              .ofType(String.class);
          resetToEarliestOpt = parser.accepts("to-earliest", RESET_TO_EARLIEST_DOC);
          resetToLatestOpt = parser.accepts("to-latest", RESET_TO_LATEST_DOC);
          membersOpt = parser.accepts("members", MEMBERS_DOC)
              .availableIf(describeOpt);
          offsetsOpt = parser.accepts("offsets", OFFSETS_DOC)
              .availableIf(describeOpt);
          stateOpt = parser.accepts("state", STATE_DOC)
              .availableIf(describeOpt, listOpt)
              .withOptionalArg()
              .ofType(String.class);
          verboseOpt = parser.accepts("verbose", VERBOSE_DOC)
              .availableIf(describeOpt);
  
          allGroupSelectionScopeOpts = new HashSet<>(Arrays.asList(groupOpt, allGroupsOpt));
          allShareGroupLevelOpts = new HashSet<>(Arrays.asList(listOpt, describeOpt, deleteOpt, resetOffsetsOpt));
          allResetOffsetScenarioOpts = new HashSet<>(Arrays.asList(resetToDatetimeOpt, resetToEarliestOpt, resetToLatestOpt));
          allDeleteOffsetsOpts = new HashSet<>(Arrays.asList(groupOpt, topicOpt));
  
          options = parser.parse(args);
      }
  
      @SuppressWarnings({"CyclomaticComplexity", "NPathComplexity"})
      public void checkArgs() {
          CommandLineUtils.maybePrintHelpOrVersion(this, "This tool helps to list, describe, reset and delete share groups.");
  
          CommandLineUtils.checkRequiredArgs(parser, options, bootstrapServerOpt);
  
          if (options.has(describeOpt)) {
              if (!options.has(groupOpt) && !options.has(allGroupsOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + describeOpt + " takes one of these options: " + allGroupSelectionScopeOpts.stream().map(Object::toString).collect(Collectors.joining(", ")));
              List<OptionSpec<?>> mutuallyExclusiveOpts = Arrays.asList(membersOpt, offsetsOpt, stateOpt);
              if (mutuallyExclusiveOpts.stream().mapToInt(o -> options.has(o) ? 1 : 0).sum() > 1) {
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + describeOpt + " takes at most one of these options: " + mutuallyExclusiveOpts.stream().map(Object::toString).collect(Collectors.joining(", ")));
              }
              if (options.has(stateOpt) && options.valueOf(stateOpt) != null)
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + describeOpt + " does not take a value for " + stateOpt);
          }
  
          if (options.has(deleteOpt)) {
              if (!options.has(groupOpt) && !options.has(allGroupsOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      String.format("Option %s takes the options %s or %s", deleteOpt, groupOpt, allGroupsOpt));
              if (options.has(allGroupsOpt) && options.has(groupOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      String.format("Option %s takes either %s or %s, not both.", deleteOpt, groupOpt, allGroupsOpt));
              if (options.has(topicOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + deleteOpt + " does not take the option: " + topicOpt);
          }
  
          if (options.has(deleteOffsetsOpt)) {
              if (!options.has(groupOpt) || !options.has(topicOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + deleteOffsetsOpt + " takes the following options: " + allDeleteOffsetsOpts.stream().map(Object::toString).collect(Collectors.joining(", ")));
          }
  
          if (options.has(resetOffsetsOpt)) {
              if (options.has(dryRunOpt) && options.has(executeOpt))
                  CommandLineUtils.printUsageAndExit(parser, "Option " + resetOffsetsOpt + " only accepts one of " + executeOpt + " and " + dryRunOpt);
  
              if (!options.has(dryRunOpt) && !options.has(executeOpt)) {
                  CommandLineUtils.printUsageAndExit(parser, "Option " + resetOffsetsOpt + " takes the option: " + executeOpt + " or " + dryRunOpt);
              }
  
              if (!options.has(groupOpt))
                  CommandLineUtils.printUsageAndExit(parser,
                      "Option " + resetOffsetsOpt + " takes the option: " + groupOpt);
  
              CommandLineUtils.checkInvalidArgs(parser, options, resetToDatetimeOpt, minus(allResetOffsetScenarioOpts, resetToDatetimeOpt));
              CommandLineUtils.checkInvalidArgs(parser, options, resetToEarliestOpt, minus(allResetOffsetScenarioOpts, resetToEarliestOpt));
              CommandLineUtils.checkInvalidArgs(parser, options, resetToLatestOpt, minus(allResetOffsetScenarioOpts, resetToLatestOpt));
          }
  
          CommandLineUtils.checkInvalidArgs(parser, options, groupOpt, minus(allGroupSelectionScopeOpts, groupOpt));
          CommandLineUtils.checkInvalidArgs(parser, options, groupOpt, minus(allShareGroupLevelOpts, describeOpt, deleteOpt, resetOffsetsOpt));
          CommandLineUtils.checkInvalidArgs(parser, options, topicOpt, minus(allShareGroupLevelOpts, deleteOpt, resetOffsetsOpt));
      }
  }
  