# 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 Senlin clustering API.
"""
from __future__ import print_function
import argparse
import logging
import six
import sys
from oslo_utils import encodeutils
from oslo_utils import importutils
import senlinclient
from senlinclient import cliargs
from senlinclient import client
from senlinclient.common import exc
from senlinclient.common.i18n import _
from senlinclient.common import sdk
from senlinclient.common import utils
osprofiler_profiler = importutils.try_import("osprofiler.profiler")
LOG = logging.getLogger(__name__)
class HelpFormatter(argparse.HelpFormatter):
def start_section(self, heading):
# Title-case the headings
heading = '%s%s' % (heading[0].upper(), heading[1:])
super(HelpFormatter, self).start_section(heading)
class SenlinShell(object):
def _setup_logging(self, debug):
log_lvl = logging.DEBUG if debug else logging.WARNING
logging.basicConfig(format="%(levelname)s (%(module)s) %(message)s",
level=log_lvl)
logging.getLogger('iso8601').setLevel(logging.WARNING)
logging.getLogger('urllib3.connectionpool').setLevel(logging.WARNING)
def _setup_verbose(self, verbose):
if verbose:
exc.verbose = 1
def _find_actions(self, subparsers, actions_module):
for attr in (a for a in dir(actions_module) if a.startswith('do_')):
command = attr[3:].replace('_', '-')
callback = getattr(actions_module, attr)
# get callback documentation string
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=HelpFormatter)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS)
self.subcommands[command] = subparser
for (args, kwargs) in arguments:
subparser.add_argument(*args, **kwargs)
subparser.set_defaults(func=callback)
def do_bash_completion(self, args):
'''Prints all of the commands and options to stdout.
The senlin.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))
def add_profiler_args(self, parser):
if osprofiler_profiler:
parser.add_argument(
'--profile', metavar='HMAC_KEY',
help=_('HMAC key to use for encrypting context data for '
'performance profiling of operation. This key should '
'be the value of HMAC key configured in osprofiler '
'middleware in senlin, it is specified in the paste '
'deploy configuration (/etc/senlin/api-paste.ini). '
'Without the key, profiling will not be triggered '
'even if osprofiler is enabled on server side.'))
def _add_bash_completion_subparser(self, subparsers):
subparser = subparsers.add_parser('bash_completion',
add_help=False,
formatter_class=HelpFormatter)
self.subcommands['bash_completion'] = subparser
subparser.set_defaults(func=self.do_bash_completion)
def get_subcommand_parser(self, base_parser, version):
parser = base_parser
self.subcommands = {}
subparsers = parser.add_subparsers(metavar='<subcommand>')
submodule = utils.import_versioned_module(version, 'shell')
self._find_actions(subparsers, submodule)
self._find_actions(subparsers, self)
self._add_bash_completion_subparser(subparsers)
return parser
@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()
def _check_identity_arguments(self, args):
# project name or ID is needed to make keystoneclient
# retrieve a service catalog, it's not required if
# os_no_client_auth is specified, neither is the auth URL
if not (args.project_id or args.project_name):
msg = _('You must provide a project ID via either '
'--os-project-id (or env[OS_PROJECT_ID]) or a project '
'name via --os-project-name (or env[OS_PROJECT_NAME])')
raise exc.CommandError(msg)
if not args.auth_url:
msg = _('You must provide an auth url via --os-auth-url (or '
' env[OS_AUTH_URL])')
raise exc.CommandError(msg)
def _setup_senlin_client(self, api_ver, args):
'''Create senlin client using given args.'''
kwargs = {
'auth_plugin': args.auth_plugin,
'auth_url': args.auth_url,
'project_name': args.project_name,
'domain_name': args.domain_name,
'project_domain_name': args.project_domain_name,
'user_domain_name': args.user_domain_name,
'user_name': args.username,
'password': args.password,
'verify': args.verify,
'token': args.token,
}
conn = sdk.connection.Connection(preference=args.user_preferences,
**kwargs)
return client.Client('1', conn.session)
def main(self, argv):
# Parse args once to find version
parser = argparse.ArgumentParser(
prog='senlin',
description=__doc__.strip(),
epilog=_('Type "senlin help <COMMAND>" for help on a specific '
'command.'),
add_help=False,
formatter_class=HelpFormatter,
)
cliargs.add_global_args(parser, version=senlinclient.__version__)
cliargs.add_global_identity_args(parser)
self.add_profiler_args(parser)
base_parser = parser
(options, args) = base_parser.parse_known_args(argv)
self._setup_logging(options.debug)
self._setup_verbose(options.verbose)
# build available subcommands based on version
api_ver = options.senlin_api_version
LOG.info(api_ver)
subcommand_parser = self.get_subcommand_parser(base_parser, api_ver)
self.parser = subcommand_parser
# Handle top-level --help/-h before attempting to parse
# a command off the command line
if not args and options.help or not argv:
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
# Check if identity information are sufficient
self._check_identity_arguments(args)
# Setup Senlin client connection
sc = self._setup_senlin_client(api_ver, args)
profile = osprofiler_profiler and options.profile
if profile:
osprofiler_profiler.init(options.profile)
args.func(sc, args)
if profile:
trace_id = osprofiler_profiler.get().get_base_id()
print(_("Trace ID: %s") % trace_id)
print(_("To display trace use next command:\n"
"osprofiler trace show --html %s ") % trace_id)
def main(args=None):
try:
if args is None:
args = sys.argv[1:]
SenlinShell().main(args)
except KeyboardInterrupt:
print(_("... terminating senlin client"), file=sys.stderr)
sys.exit(130)
except Exception as e:
if '--debug' in args or '-d' in args:
raise
else:
print(encodeutils.safe_encode(six.text_type(e)), file=sys.stderr)
sys.exit(1)
if __name__ == "__main__":
main()