Show proper error on argument parse when using api-cli

rhodecode/bin/rhodecode_api.py

@@ -1,232 +1,237 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.bin.backup_manager
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     Api CLI client for RhodeCode
 
     :created_on: Jun 3, 2012
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import with_statement
 import os
 import sys
 import random
 import urllib2
 import pprint
 import argparse
 
 try:
     from rhodecode.lib.ext_json import json
 except ImportError:
     try:
         import simplejson as json
     except ImportError:
         import json
 
 
 CONFIG_NAME = '.rhodecode'
 FORMAT_PRETTY = 'pretty'
 FORMAT_JSON = 'json'
 
 
 class RcConf(object):
     """
     RhodeCode config for API
 
     conf = RcConf()
     conf['key']
 
     """
 
     def __init__(self, autoload=True, autocreate=False, config=None):
         self._conf_name = CONFIG_NAME
         self._conf = {}
         if autocreate:
             self.make_config(config)
         if autoload:
             self._conf = self.load_config()
 
     def __getitem__(self, key):
         return self._conf[key]
 
     def __nonzero__(self):
         if self._conf:
             return True
         return False
 
     def __eq__(self):
         return self._conf.__eq__()
 
     def __repr__(self):
         return 'RcConf<%s>' % self._conf.__repr__()
 
     def make_config(self, config):
         """
         Saves given config as a JSON dump in the _conf_name location
 
         :param config:
         :type config:
         """
         with open(self._conf_name, 'wb') as f:
             json.dump(config, f, indent=4)
             sys.stdout.write('Updated conf\n')
 
     def update_config(self, new_config):
         """
         Reads the JSON config updates it's values with new_config and
         saves it back as JSON dump
 
         :param new_config:
         """
         config = {}
         try:
             with open(self._conf_name, 'rb') as conf:
                 config = json.load(conf)
         except IOError, e:
             sys.stderr.write(str(e) + '\n')
 
         config.update(new_config)
         self.make_config(config)
 
     def load_config(self):
         """
         Loads config from file and returns loaded JSON object
         """
         try:
             with open(self._conf_name, 'rb') as conf:
                 return  json.load(conf)
         except IOError, e:
             #sys.stderr.write(str(e) + '\n')
             pass
 
 
 def api_call(apikey, apihost, format, method=None, **kw):
     """
     Api_call wrapper for RhodeCode
 
     :param apikey:
     :param apihost:
     :param format: formatting, pretty means prints and pprint of json
      json returns unparsed json
     :param method:
     """
     def _build_data(random_id):
         """
         Builds API data with given random ID
 
         :param random_id:
         :type random_id:
         """
         return {
             "id": random_id,
             "api_key": apikey,
             "method": method,
             "args": kw
         }
 
     if not method:
         raise Exception('please specify method name !')
     id_ = random.randrange(1, 9999)
     req = urllib2.Request('%s/_admin/api' % apihost,
                       data=json.dumps(_build_data(id_)),
                       headers={'content-type': 'text/plain'})
     if format == FORMAT_PRETTY:
         sys.stdout.write('calling %s to %s \n' % (req.get_data(), apihost))
     ret = urllib2.urlopen(req)
     raw_json = ret.read()
     json_data = json.loads(raw_json)
     id_ret = json_data['id']
     _formatted_json = pprint.pformat(json_data)
     if id_ret == id_:
         if format == FORMAT_JSON:
             sys.stdout.write(str(raw_json))
         else:
             sys.stdout.write('rhodecode returned:\n%s\n' % (_formatted_json))
 
     else:
         raise Exception('something went wrong. '
                         'ID mismatch got %s, expected %s | %s' % (
                                             id_ret, id_, _formatted_json))
 
 
 def argparser(argv):
     usage = ("rhodecode_api [-h] [--format=FORMAT] [--apikey=APIKEY] [--apihost=APIHOST] "
              "_create_config or METHOD <key:val> <key2:val> ...")
 
     parser = argparse.ArgumentParser(description='RhodeCode API cli',
                                      usage=usage)
 
     ## config
     group = parser.add_argument_group('config')
     group.add_argument('--apikey', help='api access key')
     group.add_argument('--apihost', help='api host')
 
     group = parser.add_argument_group('API')
     group.add_argument('method', metavar='METHOD', type=str,
             help='API method name to call followed by key:value attributes',
     )
     group.add_argument('--format', dest='format', type=str,
             help='output format default: `pretty` can '
                  'be also `%s`' % FORMAT_JSON,
             default=FORMAT_PRETTY
     )
     args, other = parser.parse_known_args()
     return parser, args, other
 
 
 def main(argv=None):
     """
     Main execution function for cli
 
     :param argv:
     :type argv:
     """
     if argv is None:
         argv = sys.argv
 
     conf = None
     parser, args, other = argparser(argv)
 
     api_credentials_given = (args.apikey and args.apihost)
     if args.method == '_create_config':
         if not api_credentials_given:
             raise parser.error('_create_config requires --apikey and --apihost')
         conf = RcConf(autocreate=True, config={'apikey': args.apikey,
                                                'apihost': args.apihost})
         sys.stdout.write('Create new config in %s\n' % CONFIG_NAME)
 
     if not conf:
         conf = RcConf(autoload=True)
         if not conf:
             if not api_credentials_given:
                 parser.error('Could not find config file and missing '
                              '--apikey or --apihost in params')
 
     apikey = args.apikey or conf['apikey']
     host = args.apihost or conf['apihost']
     method = args.method
     if method == '_create_config':
         sys.exit()
-    margs = dict(map(lambda s: s.split(':', 1), other))
+
+    try:
+        margs = dict(map(lambda s: s.split(':', 1), other))
+    except:
+        sys.stderr.write('Error parsing arguments \n')
+        sys.exit()
 
     api_call(apikey, host, args.format, method, **margs)
     return 0
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))