cloud-cli/cloudtool/__init__.py

# 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,
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# specific language governing permissions and limitations
# under the License.



'''
Created on Aug 2, 2010

'''

import sys
import cloudapis as apis
import cloudtool.utils as utils


def main(argv=None):

    #import ipdb; ipdb.set_trace()
    if argv == None:
       argv = sys.argv

    prelim_args = [ x for x in argv[0:] if not x.startswith('-') ]
    parser = utils.get_parser()

    api = __import__("cloudapis")
    apis = getattr(api, "implementor")
    if len(prelim_args) == 1:
        commandlist = utils.get_command_list(apis)
        parser.error("you need to specify a command name as the first argument\n\nCommands supported by the %s API:\n"%prelim_args[0] + "\n".join(commandlist))

    command = utils.lookup_command_in_api(apis,prelim_args[1])
    if not command: parser.error("command %r not supported by the %s API"%(prelim_args[1],prelim_args[0]))

    argv = argv[1:]
    if len(argv) == 1:
	argv.append("--help")

    parser = utils.get_parser(apis.__init__,command)
    opts,args,api_optionsdict,cmd_optionsdict = parser.parse_args(argv)


    try:
        api = apis(**api_optionsdict)
    except utils.OptParseError as e:
        parser.error(str(e))

    command = utils.lookup_command_in_api(api,args[0])

    # we now discard the first two arguments as those necessarily are the api and command names
    args = args[2:]

    try: return command(*args,**cmd_optionsdict)
    except TypeError as e: parser.error(str(e))


if __name__ == '__main__':
    main(argv)