303 lines
11 KiB
Python
303 lines
11 KiB
Python
# 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 Telemetry API.
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"""
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from __future__ import print_function
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import argparse
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import logging
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import sys
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from oslo.utils import encodeutils
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import six
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import ceilometerclient
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from ceilometerclient import client as ceiloclient
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from ceilometerclient.common import utils
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from ceilometerclient import exc
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from ceilometerclient.openstack.common import cliutils
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def _positive_non_zero_int(argument_value):
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if argument_value is None:
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return None
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try:
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value = int(argument_value)
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except ValueError:
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msg = "%s must be an integer" % argument_value
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raise argparse.ArgumentTypeError(msg)
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if value <= 0:
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msg = "%s must be greater than 0" % argument_value
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raise argparse.ArgumentTypeError(msg)
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return value
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class CeilometerShell(object):
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def get_base_parser(self):
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parser = argparse.ArgumentParser(
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prog='ceilometer',
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description=__doc__.strip(),
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epilog='See "ceilometer help COMMAND" '
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'for help on a specific command.',
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add_help=False,
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formatter_class=HelpFormatter,
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)
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# Global arguments
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parser.add_argument('-h', '--help',
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action='store_true',
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help=argparse.SUPPRESS,
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)
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parser.add_argument('--version',
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action='version',
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version=ceilometerclient.__version__)
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parser.add_argument('-d', '--debug',
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default=bool(cliutils.env('CEILOMETERCLIENT_DEBUG')
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),
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action='store_true',
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help='Defaults to env[CEILOMETERCLIENT_DEBUG].')
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parser.add_argument('-v', '--verbose',
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default=False, action="store_true",
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help="Print more verbose output.")
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parser.add_argument('--timeout',
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default=600,
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type=_positive_non_zero_int,
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help='Number of seconds to wait for a response.')
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parser.add_argument('--ceilometer-url',
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default=cliutils.env('CEILOMETER_URL'),
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help='Defaults to env[CEILOMETER_URL].')
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parser.add_argument('--ceilometer_url',
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help=argparse.SUPPRESS)
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parser.add_argument('--ceilometer-api-version',
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default=cliutils.env(
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'CEILOMETER_API_VERSION', default='2'),
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help='Defaults to env[CEILOMETER_API_VERSION] '
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'or 2.')
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parser.add_argument('--ceilometer_api_version',
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help=argparse.SUPPRESS)
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self.auth_plugin.add_opts(parser)
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self.auth_plugin.add_common_opts(parser)
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return parser
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def get_subcommand_parser(self, version):
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parser = self.get_base_parser()
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self.subcommands = {}
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subparsers = parser.add_subparsers(metavar='<subcommand>')
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submodule = utils.import_versioned_module(version, 'shell')
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self._find_actions(subparsers, submodule)
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self._find_actions(subparsers, self)
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self._add_bash_completion_subparser(subparsers)
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return parser
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def _add_bash_completion_subparser(self, subparsers):
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subparser = subparsers.add_parser(
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'bash_completion',
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add_help=False,
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formatter_class=HelpFormatter
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)
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self.subcommands['bash_completion'] = subparser
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subparser.set_defaults(func=self.do_bash_completion)
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def _find_actions(self, subparsers, actions_module):
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for attr in (a for a in dir(actions_module) if a.startswith('do_')):
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# I prefer to be hypen-separated instead of underscores.
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command = attr[3:].replace('_', '-')
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callback = getattr(actions_module, attr)
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desc = callback.__doc__ or ''
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help = desc.strip().split('\n')[0]
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arguments = getattr(callback, 'arguments', [])
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subparser = subparsers.add_parser(command, help=help,
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description=desc,
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add_help=False,
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formatter_class=HelpFormatter)
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subparser.add_argument('-h', '--help', action='help',
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help=argparse.SUPPRESS)
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self.subcommands[command] = subparser
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for (args, kwargs) in arguments:
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subparser.add_argument(*args, **kwargs)
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subparser.set_defaults(func=callback)
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@staticmethod
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def _setup_logging(debug):
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format = '%(levelname)s (%(module)s) %(message)s'
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if debug:
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logging.basicConfig(format=format, level=logging.DEBUG)
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else:
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logging.basicConfig(format=format, level=logging.WARN)
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logging.getLogger('iso8601').setLevel(logging.WARNING)
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logging.getLogger('urllib3.connectionpool').setLevel(logging.WARNING)
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def parse_args(self, argv):
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# Parse args once to find version
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self.auth_plugin = ceiloclient.AuthPlugin(argv)
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parser = self.get_base_parser()
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(options, args) = parser.parse_known_args(argv)
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self.auth_plugin.parse_opts(options)
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self._setup_logging(options.debug)
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# build available subcommands based on version
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api_version = options.ceilometer_api_version
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subcommand_parser = self.get_subcommand_parser(api_version)
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self.parser = subcommand_parser
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# Handle top-level --help/-h before attempting to parse
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# a command off the command line
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if options.help or not argv:
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self.do_help(options)
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return 0
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# Return parsed args
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return api_version, subcommand_parser.parse_args(argv)
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@staticmethod
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def no_project_and_domain_set(args):
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if not (args.os_project_id or (args.os_project_name and
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(args.os_user_domain_name or args.os_user_domain_id)) or
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(args.os_tenant_id or args.os_tenant_name)):
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return True
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else:
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return False
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def main(self, argv):
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parsed = self.parse_args(argv)
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if parsed == 0:
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return 0
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api_version, args = parsed
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# Short-circuit and deal with help command right away.
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if args.func == self.do_help:
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self.do_help(args)
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return 0
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elif args.func == self.do_bash_completion:
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self.do_bash_completion(args)
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return 0
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if not (self.auth_plugin.opts['auth_token'] and args.ceilometer_url):
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if not self.auth_plugin.opts['username']:
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raise exc.CommandError("You must provide a username via "
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"either --os-username or via "
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"env[OS_USERNAME]")
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if not self.auth_plugin.opts['password']:
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raise exc.CommandError("You must provide a password via "
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"either --os-password or via "
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"env[OS_PASSWORD]")
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if self.no_project_and_domain_set(args):
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# steer users towards Keystone V3 API
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raise exc.CommandError("You must provide a project_id via "
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"either --os-project-id or via "
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"env[OS_PROJECT_ID] and "
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"a domain_name via either "
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"--os-user-domain-name or via "
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"env[OS_USER_DOMAIN_NAME] or "
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"a domain_id via either "
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"--os-user-domain-id or via "
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"env[OS_USER_DOMAIN_ID]")
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if not (self.auth_plugin.opts['tenant_id']
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or self.auth_plugin.opts['tenant_name']):
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raise exc.CommandError("You must provide a tenant_id via "
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"either --os-tenant-id or via "
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"env[OS_TENANT_ID]")
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if not self.auth_plugin.opts['auth_url']:
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raise exc.CommandError("You must provide an auth url via "
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"either --os-auth-url or via "
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"env[OS_AUTH_URL]")
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client_kwargs = vars(args)
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client_kwargs.update(self.auth_plugin.opts)
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client_kwargs['auth_plugin'] = self.auth_plugin
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client = ceiloclient.Client(api_version, **client_kwargs)
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# call whatever callback was selected
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try:
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args.func(client, args)
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except exc.HTTPUnauthorized:
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raise exc.CommandError("Invalid OpenStack Identity credentials.")
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def do_bash_completion(self, args):
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"""Prints all of the commands and options to stdout.
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The ceilometer.bash_completion script doesn't have to hard code them.
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"""
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commands = set()
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options = set()
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for sc_str, sc in self.subcommands.items():
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commands.add(sc_str)
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for option in list(sc._optionals._option_string_actions):
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options.add(option)
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commands.remove('bash-completion')
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commands.remove('bash_completion')
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print(' '.join(commands | options))
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@utils.arg('command', metavar='<subcommand>', nargs='?',
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help='Display help for <subcommand>')
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def do_help(self, args):
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"""Display help about this program or one of its subcommands."""
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if getattr(args, 'command', None):
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if args.command in self.subcommands:
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self.subcommands[args.command].print_help()
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else:
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raise exc.CommandError("'%s' is not a valid subcommand" %
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args.command)
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else:
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self.parser.print_help()
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class HelpFormatter(argparse.HelpFormatter):
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def __init__(self, prog, indent_increment=2, max_help_position=32,
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width=None):
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super(HelpFormatter, self).__init__(prog, indent_increment,
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max_help_position, width)
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def start_section(self, heading):
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# Title-case the headings
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heading = '%s%s' % (heading[0].upper(), heading[1:])
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super(HelpFormatter, self).start_section(heading)
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def main(args=None):
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try:
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if args is None:
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args = sys.argv[1:]
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CeilometerShell().main(args)
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except Exception as e:
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if '--debug' in args or '-d' in args:
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raise
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else:
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print(encodeutils.safe_encode(six.text_type(e)), file=sys.stderr)
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sys.exit(1)
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if __name__ == "__main__":
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main()
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