437 lines
16 KiB
Python
437 lines
16 KiB
Python
# Copyright 2012-2013 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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"""Command-line interface to the OpenStack APIs"""
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import argparse
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import getpass
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import logging
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import os
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import sys
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import traceback
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from cliff import app
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from cliff import command
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from cliff import help
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import openstackclient
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from openstackclient.common import clientmanager
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from openstackclient.common import commandmanager
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from openstackclient.common import exceptions as exc
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from openstackclient.common import openstackkeyring
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from openstackclient.common import restapi
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from openstackclient.common import utils
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from openstackclient.identity import client as identity_client
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KEYRING_SERVICE = 'openstack'
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DEFAULT_DOMAIN = 'default'
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def env(*vars, **kwargs):
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"""Search for the first defined of possibly many env vars
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Returns the first environment variable defined in vars, or
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returns the default defined in kwargs.
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"""
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for v in vars:
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value = os.environ.get(v, None)
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if value:
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return value
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return kwargs.get('default', '')
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class OpenStackShell(app.App):
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CONSOLE_MESSAGE_FORMAT = '%(levelname)s: %(name)s %(message)s'
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log = logging.getLogger(__name__)
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def __init__(self):
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# Patch command.Command to add a default auth_required = True
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command.Command.auth_required = True
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# But not help
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help.HelpCommand.auth_required = False
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super(OpenStackShell, self).__init__(
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description=__doc__.strip(),
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version=openstackclient.__version__,
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command_manager=commandmanager.CommandManager('openstack.cli'))
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# Until we have command line arguments parsed, dump any stack traces
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self.dump_stack_trace = True
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# This is instantiated in initialize_app() only when using
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# password flow auth
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self.auth_client = None
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# Assume TLS host certificate verification is enabled
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self.verify = True
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# Get list of extension modules
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self.ext_modules = clientmanager.get_extension_modules(
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'openstack.cli.extension',
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)
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# Loop through extensions to get parser additions
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for mod in self.ext_modules:
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self.parser = mod.build_option_parser(self.parser)
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# NOTE(dtroyer): This hack changes the help action that Cliff
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# automatically adds to the parser so we can defer
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# its execution until after the api-versioned commands
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# have been loaded. There doesn't seem to be a
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# way to edit/remove anything from an existing parser.
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# Replace the cliff-added help.HelpAction to defer its execution
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self.DeferredHelpAction = None
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for a in self.parser._actions:
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if type(a) == help.HelpAction:
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# Found it, save and replace it
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self.DeferredHelpAction = a
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# These steps are argparse-implementation-dependent
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self.parser._actions.remove(a)
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if self.parser._option_string_actions['-h']:
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del self.parser._option_string_actions['-h']
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if self.parser._option_string_actions['--help']:
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del self.parser._option_string_actions['--help']
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# Make a new help option to just set a flag
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self.parser.add_argument(
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'-h', '--help',
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action='store_true',
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dest='deferred_help',
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default=False,
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help="show this help message and exit",
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)
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def run(self, argv):
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try:
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return super(OpenStackShell, self).run(argv)
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except Exception as e:
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if not logging.getLogger('').handlers:
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logging.basicConfig()
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if self.dump_stack_trace:
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self.log.error(traceback.format_exc(e))
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else:
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self.log.error('Exception raised: ' + str(e))
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return 1
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def build_option_parser(self, description, version):
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parser = super(OpenStackShell, self).build_option_parser(
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description,
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version)
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# Global arguments
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parser.add_argument(
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'--os-auth-url',
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metavar='<auth-url>',
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default=env('OS_AUTH_URL'),
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help='Authentication URL (Env: OS_AUTH_URL)')
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parser.add_argument(
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'--os-project-name',
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metavar='<auth-project-name>',
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default=env('OS_PROJECT_NAME', default=env('OS_TENANT_NAME')),
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help='Authentication project name (Env: OS_PROJECT_NAME)',
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)
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parser.add_argument(
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'--os-tenant-name',
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metavar='<auth-tenant-name>',
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dest='os_project_name',
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help=argparse.SUPPRESS,
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)
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parser.add_argument(
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'--os-project-id',
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metavar='<auth-project-id>',
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default=env('OS_PROJECT_ID', default=env('OS_TENANT_ID')),
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help='Authentication project ID (Env: OS_PROJECT_ID)',
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)
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parser.add_argument(
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'--os-tenant-id',
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metavar='<auth-tenant-id>',
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dest='os_project_id',
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help=argparse.SUPPRESS,
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)
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parser.add_argument(
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'--os-username',
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metavar='<auth-username>',
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default=utils.env('OS_USERNAME'),
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help='Authentication username (Env: OS_USERNAME)')
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parser.add_argument(
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'--os-password',
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metavar='<auth-password>',
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default=utils.env('OS_PASSWORD'),
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help='Authentication password (Env: OS_PASSWORD)')
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parser.add_argument(
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'--os-region-name',
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metavar='<auth-region-name>',
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default=env('OS_REGION_NAME'),
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help='Authentication region name (Env: OS_REGION_NAME)')
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parser.add_argument(
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'--os-cacert',
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metavar='<ca-bundle-file>',
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default=env('OS_CACERT'),
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help='CA certificate bundle file (Env: OS_CACERT)')
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verify_group = parser.add_mutually_exclusive_group()
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verify_group.add_argument(
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'--verify',
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action='store_true',
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help='Verify server certificate (default)',
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)
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verify_group.add_argument(
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'--insecure',
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action='store_true',
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help='Disable server certificate verification',
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)
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parser.add_argument(
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'--os-default-domain',
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metavar='<auth-domain>',
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default=env(
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'OS_DEFAULT_DOMAIN',
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default=DEFAULT_DOMAIN),
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help='Default domain ID, default=' +
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DEFAULT_DOMAIN +
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' (Env: OS_DEFAULT_DOMAIN)')
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parser.add_argument(
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'--os-token',
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metavar='<token>',
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default=env('OS_TOKEN'),
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help='Defaults to env[OS_TOKEN]')
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parser.add_argument(
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'--os-url',
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metavar='<url>',
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default=env('OS_URL'),
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help='Defaults to env[OS_URL]')
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env_os_keyring = env('OS_USE_KEYRING', default=False)
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if type(env_os_keyring) == str:
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if env_os_keyring.lower() in ['true', '1']:
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env_os_keyring = True
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else:
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env_os_keyring = False
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parser.add_argument('--os-use-keyring',
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default=env_os_keyring,
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action='store_true',
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help='Use keyring to store password, '
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'default=False (Env: OS_USE_KEYRING)')
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parser.add_argument(
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'--os-identity-api-version',
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metavar='<identity-api-version>',
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default=env(
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'OS_IDENTITY_API_VERSION',
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default=identity_client.DEFAULT_IDENTITY_API_VERSION),
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help='Identity API version, default=' +
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identity_client.DEFAULT_IDENTITY_API_VERSION +
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' (Env: OS_IDENTITY_API_VERSION)')
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return parser
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def authenticate_user(self):
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"""Make sure the user has provided all of the authentication
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info we need.
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"""
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self.log.debug('validating authentication options')
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if self.options.os_token or self.options.os_url:
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# Token flow auth takes priority
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if not self.options.os_token:
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raise exc.CommandError(
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"You must provide a token via"
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" either --os-token or env[OS_TOKEN]")
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if not self.options.os_url:
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raise exc.CommandError(
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"You must provide a service URL via"
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" either --os-url or env[OS_URL]")
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else:
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# Validate password flow auth
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if not self.options.os_username:
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raise exc.CommandError(
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"You must provide a username via"
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" either --os-username or env[OS_USERNAME]")
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self.get_password_from_keyring()
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if not self.options.os_password:
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# No password, if we've got a tty, try prompting for it
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if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty():
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# Check for Ctl-D
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try:
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self.options.os_password = getpass.getpass()
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self.set_password_in_keyring()
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except EOFError:
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pass
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# No password because we did't have a tty or the
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# user Ctl-D when prompted?
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if not self.options.os_password:
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raise exc.CommandError(
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"You must provide a password via"
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" either --os-password, or env[OS_PASSWORD], "
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" or prompted response")
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if not (self.options.os_project_id
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or self.options.os_project_name):
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raise exc.CommandError(
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"You must provide a project id via"
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" either --os-project-id or via env[OS_PROJECT_ID]")
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if not self.options.os_auth_url:
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raise exc.CommandError(
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"You must provide an auth url via"
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" either --os-auth-url or via env[OS_AUTH_URL]")
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self.client_manager = clientmanager.ClientManager(
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token=self.options.os_token,
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url=self.options.os_url,
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auth_url=self.options.os_auth_url,
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project_name=self.options.os_project_name,
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project_id=self.options.os_project_id,
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username=self.options.os_username,
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password=self.options.os_password,
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region_name=self.options.os_region_name,
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verify=self.verify,
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api_version=self.api_version,
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)
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return
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def init_keyring_backend(self):
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"""Initialize openstack backend to use for keyring"""
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return openstackkeyring.os_keyring()
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def get_password_from_keyring(self):
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"""Get password from keyring, if it's set"""
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if self.options.os_use_keyring:
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service = KEYRING_SERVICE
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backend = self.init_keyring_backend()
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if not self.options.os_password:
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password = backend.get_password(service,
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self.options.os_username)
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self.options.os_password = password
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def set_password_in_keyring(self):
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"""Set password in keyring for this user"""
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if self.options.os_use_keyring:
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service = KEYRING_SERVICE
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backend = self.init_keyring_backend()
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if self.options.os_password:
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password = backend.get_password(service,
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self.options.os_username)
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# either password is not set in keyring, or it is different
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if password != self.options.os_password:
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backend.set_password(service,
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self.options.os_username,
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self.options.os_password)
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def initialize_app(self, argv):
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"""Global app init bits:
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* set up API versions
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* validate authentication info
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* authenticate against Identity if requested
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"""
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super(OpenStackShell, self).initialize_app(argv)
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# Set requests logging to a useful level
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requests_log = logging.getLogger("requests")
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if self.options.debug:
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requests_log.setLevel(logging.DEBUG)
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self.dump_stack_trace = True
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else:
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requests_log.setLevel(logging.WARNING)
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self.dump_stack_trace = False
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# Save default domain
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self.default_domain = self.options.os_default_domain
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# Stash selected API versions for later
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self.api_version = {
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'identity': self.options.os_identity_api_version,
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}
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# Loop through extensions to get API versions
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for mod in self.ext_modules:
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ver = getattr(self.options, mod.API_VERSION_OPTION, None)
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if ver:
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self.api_version[mod.API_NAME] = ver
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self.log.debug('%s API version %s' % (mod.API_NAME, ver))
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# Add the API version-specific commands
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for api in self.api_version.keys():
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version = '.v' + self.api_version[api].replace('.', '_')
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cmd_group = 'openstack.' + api.replace('-', '_') + version
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self.log.debug('command group %s' % cmd_group)
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self.command_manager.add_command_group(cmd_group)
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# Commands that span multiple APIs
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self.command_manager.add_command_group(
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'openstack.common')
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# This is the naive extension implementation referred to in
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# blueprint 'client-extensions'
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# Extension modules can register their commands in an
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# 'openstack.extension' entry point group:
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# entry_points={
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# 'openstack.extension': [
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# 'list_repo=qaz.github.repo:ListRepo',
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# 'show_repo=qaz.github.repo:ShowRepo',
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# ],
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# }
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self.command_manager.add_command_group(
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'openstack.extension')
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# call InitializeXxx() here
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# set up additional clients to stuff in to client_manager??
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# Handle deferred help and exit
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if self.options.deferred_help:
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self.DeferredHelpAction(self.parser, self.parser, None, None)
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# Set up common client session
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if self.options.os_cacert:
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self.verify = self.options.os_cacert
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else:
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self.verify = not self.options.insecure
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self.restapi = restapi.RESTApi(verify=self.verify)
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def prepare_to_run_command(self, cmd):
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"""Set up auth and API versions"""
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self.log.debug('prepare_to_run_command %s', cmd.__class__.__name__)
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if cmd.auth_required:
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self.authenticate_user()
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self.restapi.set_auth(self.client_manager.identity.auth_token)
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return
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def clean_up(self, cmd, result, err):
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self.log.debug('clean_up %s', cmd.__class__.__name__)
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if err:
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self.log.debug('got an error: %s', err)
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def interact(self):
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# NOTE(dtroyer): Maintain the old behaviour for interactive use as
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# this path does not call prepare_to_run_command()
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self.authenticate_user()
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self.restapi.set_auth(self.client_manager.identity.auth_token)
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super(OpenStackShell, self).interact()
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def main(argv=sys.argv[1:]):
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return OpenStackShell().run(argv)
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if __name__ == "__main__":
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sys.exit(main(sys.argv[1:]))
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