text: # 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.
  
  import binascii
  
  from kafka.tools.protocol.requests import BaseRequest, ArgumentError
  from kafka.tools.protocol.responses.join_group_v0 import JoinGroupV0Response
  
  
  def _parse_group_protocol(protocol):
      pparts = protocol.split(',')
      if len(pparts) != 2:
          raise ArgumentError("Expected group_protocol_name,group_protocol_metadata")
      if pparts[1] == '':
          return {'protocol_name': pparts[0], 'protocol_metadata': None}
      else:
          try:
              return {'protocol_name': pparts[0], 'protocol_metadata': binascii.unhexlify(pparts[1])}
          except (binascii.Error, TypeError):
              raise ArgumentError("group_protocol_metadata must be empty or a hex string")
  
  
  class JoinGroupV0Request(BaseRequest):
      api_key = 11
      api_version = 0
      cmd = "JoinGroup"
      response = JoinGroupV0Response
  
      supports_cli = True
      help_string = ("Request:     {0}V{1}\n".format(cmd, api_version) +
                     "Format:      {0}V{1} group_id session_timeout member_id protocol_type ".format(cmd, api_version) +
                     "(group_protocol_name,group_protocol_metadata ...)\n" +
                     "Description: Join or create a consumer group\n")
  
      schema = [
          {'name': 'group_id', 'type': 'string'},
          {'name': 'session_timeout', 'type': 'int32'},
          {'name': 'member_id', 'type': 'string'},
          {'name': 'protocol_type', 'type': 'string'},
          {'name': 'group_protocols',
           'type': 'array',
           'item_type': [
               {'name': 'protocol_name', 'type': 'string'},
               {'name': 'protocol_metadata', 'type': 'bytes'},
           ]},
      ]
  
      @classmethod
      def process_arguments(cls, cmd_args):
          if len(cmd_args) < 5:
              raise ArgumentError("JoinGroupV0 requires at least 5 arguments")
  
          try:
              values = {'group_id': cmd_args[0],
                        'session_timeout': int(cmd_args[1]),
                        'member_id': cmd_args[2],
                        'protocol_type': cmd_args[3],
                        'group_protocols': []}
          except ValueError:
              raise ArgumentError("The session_timeout must be an integer")
  
          for protocol in cmd_args[4:]:
              values['group_protocols'].append(_parse_group_protocol(protocol))
  
          return values
  