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      1 #!/usr/bin/env python
      2 #
      3 # Copyright 2017 - The Android Open Source Project
      4 #
      5 # Licensed under the Apache License, Version 2.0 (the "License");
      6 # you may not use this file except in compliance with the License.
      7 # You may obtain a copy of the License at
      8 #
      9 #     http://www.apache.org/licenses/LICENSE-2.0
     10 #
     11 # Unless required by applicable law or agreed to in writing, software
     12 # distributed under the License is distributed on an "AS IS" BASIS,
     13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 # See the License for the specific language governing permissions and
     15 # limitations under the License.
     16 
     17 """gsi_util command-line utility."""
     18 
     19 import argparse
     20 import logging
     21 import sys
     22 
     23 
     24 class GsiUtil(object):
     25   """Object for gsi_util command line tool."""
     26 
     27   _GSI_UTIL_VERSION = '1.0'
     28 
     29   # Adds gsi_util COMMAND here.
     30   # TODO(bowgotsai): auto collect from gsi_util/commands/*.py
     31   _COMMANDS = ['flash_gsi', 'pull', 'dump', 'check_compat']
     32 
     33   _LOGGING_FORMAT = '%(message)s'
     34   _LOGGING_LEVEL = logging.WARNING
     35 
     36   @staticmethod
     37   def _get_module_name(command):
     38     return 'gsi_util.commands.' + command
     39 
     40   def run(self, argv):
     41     """Command-line processor."""
     42 
     43     # Sets up default logging.
     44     logging.basicConfig(format=self._LOGGING_FORMAT, level=self._LOGGING_LEVEL)
     45 
     46     # Adds top-level --version/--debug argument.
     47     parser = argparse.ArgumentParser()
     48     parser.add_argument('-v', '--version', action='version',
     49                         version='%(prog)s {}'.format(self._GSI_UTIL_VERSION))
     50     parser.add_argument(
     51         '-d', '--debug', help='debug mode.', action='store_true')
     52 
     53     # Adds subparsers for each COMMAND.
     54     subparsers = parser.add_subparsers(title='COMMAND')
     55     for command in self._COMMANDS:
     56       module_name = self._get_module_name(command)
     57       mod = __import__(module_name, globals(), locals(), ['setup_command_args'])
     58       mod.setup_command_args(subparsers)
     59 
     60     args = parser.parse_args(argv[1:])
     61     if args.debug:
     62       logging.getLogger().setLevel(logging.DEBUG)
     63 
     64     try:
     65       args.func(args)
     66     except Exception as e:
     67       logging.error('%s: %s', argv[0], e.message)
     68       if args.debug:
     69         logging.exception(e)
     70       sys.exit(1)
     71 
     72 
     73 if __name__ == '__main__':
     74   tool = GsiUtil()
     75   tool.run(sys.argv)
     76