Files
python-keystoneclient/keystoneclient/shell.py
Brant Knudson 29c84cdf8b Deprecate keystone CLI
The keystone CLI is now deprecated. Every time you run it it's
going to print out an annoying message saying how deprecated it
is.

bp deprecate-cli

Change-Id: Ife7ad2025f515dc716efe2b2dd275663c21402da
2015-03-18 20:06:09 -05:00

479 lines
19 KiB
Python

# Copyright 2010 Jacob Kaplan-Moss
# Copyright 2011 OpenStack Foundation
# All Rights Reserved.
#
# Licensed 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.
"""Command-line interface to the OpenStack Identity API."""
from __future__ import print_function
import argparse
import getpass
import logging
import os
import sys
import warnings
from oslo_utils import encodeutils
import six
import keystoneclient
from keystoneclient import access
from keystoneclient.contrib.bootstrap import shell as shell_bootstrap
from keystoneclient import exceptions as exc
from keystoneclient.generic import shell as shell_generic
from keystoneclient import session
from keystoneclient import utils
from keystoneclient.v2_0 import shell as shell_v2_0
def env(*vars, **kwargs):
"""Search for the first defined of possibly many env vars
Returns the first environment variable defined in vars, or
returns the default defined in kwargs.
"""
for v in vars:
value = os.environ.get(v)
if value:
return value
return kwargs.get('default', '')
class OpenStackIdentityShell(object):
def __init__(self, parser_class=argparse.ArgumentParser):
# Since Python 2.7, DeprecationWarning is ignored by default, enable
# it so that the deprecation message is displayed.
warnings.simplefilter('once', category=DeprecationWarning)
warnings.warn(
'The keystone CLI is deprecated in favor of '
'python-openstackclient. For a Python library, continue using '
'python-keystoneclient.', DeprecationWarning)
# And back to normal!
warnings.resetwarnings()
self.parser_class = parser_class
def get_base_parser(self):
parser = self.parser_class(
prog='keystone',
description=__doc__.strip(),
epilog='See "keystone help COMMAND" '
'for help on a specific command.',
add_help=False,
formatter_class=OpenStackHelpFormatter,
)
# Global arguments
parser.add_argument('-h',
'--help',
action='store_true',
help=argparse.SUPPRESS)
parser.add_argument('--version',
action='version',
version=keystoneclient.__version__,
help="Shows the client version and exits.")
parser.add_argument('--debug',
default=False,
action='store_true',
help="Prints debugging output onto the console, "
"this includes the curl request and response "
"calls. Helpful for debugging and "
"understanding the API calls.")
parser.add_argument('--os-username',
metavar='<auth-user-name>',
default=env('OS_USERNAME'),
help='Name used for authentication with the '
'OpenStack Identity service. '
'Defaults to env[OS_USERNAME].')
parser.add_argument('--os_username',
help=argparse.SUPPRESS)
parser.add_argument('--os-password',
metavar='<auth-password>',
default=env('OS_PASSWORD'),
help='Password used for authentication with the '
'OpenStack Identity service. '
'Defaults to env[OS_PASSWORD].')
parser.add_argument('--os_password',
help=argparse.SUPPRESS)
parser.add_argument('--os-tenant-name',
metavar='<auth-tenant-name>',
default=env('OS_TENANT_NAME'),
help='Tenant to request authorization on. '
'Defaults to env[OS_TENANT_NAME].')
parser.add_argument('--os_tenant_name',
help=argparse.SUPPRESS)
parser.add_argument('--os-tenant-id',
metavar='<tenant-id>',
default=env('OS_TENANT_ID'),
help='Tenant to request authorization on. '
'Defaults to env[OS_TENANT_ID].')
parser.add_argument('--os_tenant_id',
help=argparse.SUPPRESS)
parser.add_argument('--os-auth-url',
metavar='<auth-url>',
default=env('OS_AUTH_URL'),
help='Specify the Identity endpoint to use for '
'authentication. '
'Defaults to env[OS_AUTH_URL].')
parser.add_argument('--os_auth_url',
help=argparse.SUPPRESS)
parser.add_argument('--os-region-name',
metavar='<region-name>',
default=env('OS_REGION_NAME'),
help='Specify the region to use. '
'Defaults to env[OS_REGION_NAME].')
parser.add_argument('--os_region_name',
help=argparse.SUPPRESS)
parser.add_argument('--os-identity-api-version',
metavar='<identity-api-version>',
default=env('OS_IDENTITY_API_VERSION',
'KEYSTONE_VERSION'),
help='Specify Identity API version to use. '
'Defaults to env[OS_IDENTITY_API_VERSION]'
' or 2.0.')
parser.add_argument('--os_identity_api_version',
help=argparse.SUPPRESS)
parser.add_argument('--os-token',
metavar='<service-token>',
default=env('OS_SERVICE_TOKEN'),
help='Specify an existing token to use instead of '
'retrieving one via authentication (e.g. '
'with username & password). '
'Defaults to env[OS_SERVICE_TOKEN].')
parser.add_argument('--os-endpoint',
metavar='<service-endpoint>',
default=env('OS_SERVICE_ENDPOINT'),
help='Specify an endpoint to use instead of '
'retrieving one from the service catalog '
'(via authentication). '
'Defaults to env[OS_SERVICE_ENDPOINT].')
parser.add_argument('--os-cache',
default=env('OS_CACHE', default=False),
action='store_true',
help='Use the auth token cache. '
'Defaults to env[OS_CACHE].')
parser.add_argument('--os_cache',
help=argparse.SUPPRESS)
parser.add_argument('--force-new-token',
default=False,
action="store_true",
dest='force_new_token',
help="If the keyring is available and in use, "
"token will always be stored and fetched "
"from the keyring until the token has "
"expired. Use this option to request a "
"new token and replace the existing one "
"in the keyring.")
parser.add_argument('--stale-duration',
metavar='<seconds>',
default=access.STALE_TOKEN_DURATION,
dest='stale_duration',
help="Stale duration (in seconds) used to "
"determine whether a token has expired "
"when retrieving it from keyring. This "
"is useful in mitigating process or "
"network delays. Default is %s seconds." %
access.STALE_TOKEN_DURATION)
session.Session.register_cli_options(parser)
parser.add_argument('--os_cacert', help=argparse.SUPPRESS)
parser.add_argument('--os_key', help=argparse.SUPPRESS)
parser.add_argument('--os_cert', help=argparse.SUPPRESS)
return parser
def get_subcommand_parser(self, version):
parser = self.get_base_parser()
self.subcommands = {}
subparsers = parser.add_subparsers(metavar='<subcommand>')
try:
actions_module = {
'2.0': shell_v2_0,
}[version]
except KeyError:
actions_module = shell_v2_0
self._find_actions(subparsers, actions_module)
self._find_actions(subparsers, shell_generic)
self._find_actions(subparsers, shell_bootstrap)
self._find_actions(subparsers, self)
self._add_bash_completion_subparser(subparsers)
return parser
def _add_bash_completion_subparser(self, subparsers):
subparser = subparsers.add_parser(
'bash_completion',
add_help=False,
formatter_class=OpenStackHelpFormatter
)
self.subcommands['bash_completion'] = subparser
subparser.set_defaults(func=self.do_bash_completion)
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
# I prefer to be hyphen-separated instead of underscores.
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
desc = callback.__doc__ or ''
help = desc.strip().split('\n')[0]
arguments = getattr(callback, 'arguments', [])
subparser = subparsers.add_parser(
command,
help=help,
description=desc,
add_help=False,
formatter_class=OpenStackHelpFormatter)
subparser.add_argument('-h', '--help', action='help',
help=argparse.SUPPRESS)
self.subcommands[command] = subparser
group = subparser.add_argument_group(title='Arguments')
for (args, kwargs) in arguments:
group.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def auth_check(self, args):
if args.os_token or args.os_endpoint:
if not args.os_token:
raise exc.CommandError(
'Expecting a token provided via either --os-token or '
'env[OS_SERVICE_TOKEN]')
if not args.os_endpoint:
raise exc.CommandError(
'Expecting an endpoint provided via either '
'--os-endpoint or env[OS_SERVICE_ENDPOINT]')
# user supplied a token and endpoint and at least one other cred
if args.os_username or args.os_password or args.os_auth_url:
msg = ('WARNING: Bypassing authentication using a token & '
'endpoint (authentication credentials are being '
'ignored).')
print(msg)
else:
if not args.os_auth_url:
raise exc.CommandError(
'Expecting an auth URL via either --os-auth-url or '
'env[OS_AUTH_URL]')
if args.os_username or args.os_password:
if not args.os_username:
raise exc.CommandError(
'Expecting a username provided via either '
'--os-username or env[OS_USERNAME]')
if not args.os_password:
# No password, If we've got a tty, try prompting for it
if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty():
# Check for Ctl-D
try:
args.os_password = getpass.getpass('OS Password: ')
except EOFError:
pass
# No password because we didn't have a tty or the
# user Ctl-D when prompted?
if not args.os_password:
raise exc.CommandError(
'Expecting a password provided via either '
'--os-password, env[OS_PASSWORD], or '
'prompted response')
else:
raise exc.CommandError('Expecting authentication method via'
'\n either a service token, '
'--os-token or env[OS_SERVICE_TOKEN], '
'\n credentials, '
'--os-username or env[OS_USERNAME]')
def main(self, argv):
# Parse args once to find version
parser = self.get_base_parser()
(options, args) = parser.parse_known_args(argv)
# build available subcommands based on version
api_version = options.os_identity_api_version
subcommand_parser = self.get_subcommand_parser(api_version)
self.parser = subcommand_parser
# Handle top-level --help/-h before attempting to parse
# a command off the command line
if not argv or options.help:
self.do_help(options)
return 0
# Parse args again and call whatever callback was selected
args = subcommand_parser.parse_args(argv)
# Short-circuit and deal with help command right away.
if args.func == self.do_help:
self.do_help(args)
return 0
elif args.func == self.do_bash_completion:
self.do_bash_completion(args)
return 0
if args.debug:
logging_level = logging.DEBUG
iso_logger = logging.getLogger('iso8601')
iso_logger.setLevel('WARN')
else:
logging_level = logging.WARNING
logging.basicConfig(level=logging_level)
# TODO(heckj): supporting backwards compatibility with environment
# variables. To be removed after DEVSTACK is updated, ideally in
# the Grizzly release cycle.
args.os_token = args.os_token or env('SERVICE_TOKEN')
args.os_endpoint = args.os_endpoint or env('SERVICE_ENDPOINT')
if utils.isunauthenticated(args.func):
self.cs = shell_generic.CLIENT_CLASS(endpoint=args.os_auth_url,
cacert=args.os_cacert,
key=args.os_key,
cert=args.os_cert,
insecure=args.insecure,
timeout=args.timeout)
else:
self.auth_check(args)
token = None
if args.os_token and args.os_endpoint:
token = args.os_token
api_version = options.os_identity_api_version
self.cs = self.get_api_class(api_version)(
username=args.os_username,
tenant_name=args.os_tenant_name,
tenant_id=args.os_tenant_id,
token=token,
endpoint=args.os_endpoint,
password=args.os_password,
auth_url=args.os_auth_url,
region_name=args.os_region_name,
cacert=args.os_cacert,
key=args.os_key,
cert=args.os_cert,
insecure=args.insecure,
debug=args.debug,
use_keyring=args.os_cache,
force_new_token=args.force_new_token,
stale_duration=args.stale_duration,
timeout=args.timeout)
try:
args.func(self.cs, args)
except exc.Unauthorized:
raise exc.CommandError("Invalid OpenStack Identity credentials.")
except exc.AuthorizationFailure:
raise exc.CommandError("Unable to authorize user")
def get_api_class(self, version):
try:
return {
"2.0": shell_v2_0.CLIENT_CLASS,
}[version]
except KeyError:
if version:
msg = ('WARNING: unsupported identity-api-version %s, '
'falling back to 2.0' % version)
print(msg)
return shell_v2_0.CLIENT_CLASS
def do_bash_completion(self, args):
"""Prints all of the commands and options to stdout.
The keystone.bash_completion script doesn't have to hard code them.
"""
commands = set()
options = set()
for sc_str, sc in self.subcommands.items():
commands.add(sc_str)
for option in list(sc._optionals._option_string_actions):
options.add(option)
commands.remove('bash-completion')
commands.remove('bash_completion')
print(' '.join(commands | options))
@utils.arg('command', metavar='<subcommand>', nargs='?',
help='Display help for <subcommand>.')
def do_help(self, args):
"""Display help about this program or one of its subcommands."""
if getattr(args, 'command', None):
if args.command in self.subcommands:
self.subcommands[args.command].print_help()
else:
raise exc.CommandError("'%s' is not a valid subcommand" %
args.command)
else:
self.parser.print_help()
# I'm picky about my shell help.
class OpenStackHelpFormatter(argparse.HelpFormatter):
INDENT_BEFORE_ARGUMENTS = 6
MAX_WIDTH_ARGUMENTS = 32
def add_arguments(self, actions):
for action in filter(lambda x: not x.option_strings, actions):
if not action.choices:
continue
for choice in action.choices:
length = len(choice) + self.INDENT_BEFORE_ARGUMENTS
if(length > self._max_help_position and
length <= self.MAX_WIDTH_ARGUMENTS):
self._max_help_position = length
super(OpenStackHelpFormatter, self).add_arguments(actions)
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(OpenStackHelpFormatter, self).start_section(heading)
def main():
try:
OpenStackIdentityShell().main(sys.argv[1:])
except KeyboardInterrupt:
print("... terminating keystone client", file=sys.stderr)
sys.exit(130)
except Exception as e:
print(encodeutils.safe_encode(six.text_type(e)), file=sys.stderr)
sys.exit(1)
if __name__ == "__main__":
sys.exit(main())