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