python-gyanclient/gyanclient/shell.py
bharath 20a6274d58 Correct the comments
Change-Id: I24353beb8e9291184e1e866f3f2ca156549a399b
2018-10-07 21:16:14 +05:30

702 lines
27 KiB
Python

# 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.
###
# This code is taken from python-zunclient. Goal is minimal modification.
###
"""
Command-line interface to the OpenStack Gyan API.
"""
from __future__ import print_function
import argparse
import getpass
import logging
import os
import sys
from oslo_utils import encodeutils
from oslo_utils import importutils
from oslo_utils import strutils
import six
profiler = importutils.try_import("osprofiler.profiler")
HAS_KEYRING = False
all_errors = ValueError
try:
import keyring
HAS_KEYRING = True
try:
if isinstance(keyring.get_keyring(), keyring.backend.GnomeKeyring):
import gnomekeyring
all_errors = (ValueError,
gnomekeyring.IOError,
gnomekeyring.NoKeyringDaemonError)
except Exception:
pass
except ImportError:
pass
from gyanclient import api_versions
from gyanclient import client as base_client
from gyanclient.common.apiclient import auth
from gyanclient.common import cliutils
from gyanclient import exceptions as exc
from gyanclient.i18n import _
from gyanclient.v1 import shell as shell_v1
from gyanclient import version
DEFAULT_API_VERSION = api_versions.DEFAULT_API_VERSION
DEFAULT_ENDPOINT_TYPE = 'publicURL'
DEFAULT_SERVICE_TYPE = 'ml-infra'
logger = logging.getLogger(__name__)
def positive_non_zero_float(text):
if text is None:
return None
try:
value = float(text)
except ValueError:
msg = "%s must be a float" % text
raise argparse.ArgumentTypeError(msg)
if value <= 0:
msg = "%s must be greater than 0" % text
raise argparse.ArgumentTypeError(msg)
return value
class SecretsHelper(object):
def __init__(self, args, client):
self.args = args
self.client = client
self.key = None
def _validate_string(self, text):
if text is None or len(text) == 0:
return False
return True
def _make_key(self):
if self.key is not None:
return self.key
keys = [
self.client.auth_url,
self.client.projectid,
self.client.user,
self.client.region_name,
self.client.endpoint_type,
self.client.service_type,
self.client.service_name,
self.client.volume_service_name,
]
for (index, key) in enumerate(keys):
if key is None:
keys[index] = '?'
else:
keys[index] = str(keys[index])
self.key = "/".join(keys)
return self.key
def _prompt_password(self, verify=True):
pw = None
if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty():
# Check for Ctl-D
try:
while True:
pw1 = getpass.getpass('OS Password: ')
if verify:
pw2 = getpass.getpass('Please verify: ')
else:
pw2 = pw1
if pw1 == pw2 and self._validate_string(pw1):
pw = pw1
break
except EOFError:
pass
return pw
def save(self, auth_token, management_url, tenant_id):
if not HAS_KEYRING or not self.args.os_cache:
return
if (auth_token == self.auth_token and
management_url == self.management_url):
# Nothing changed....
return
if not all([management_url, auth_token, tenant_id]):
raise ValueError("Unable to save empty management url/auth token")
value = "|".join([str(auth_token),
str(management_url),
str(tenant_id)])
keyring.set_password("gyanclient_auth", self._make_key(), value)
@property
def password(self):
if self._validate_string(self.args.os_password):
return self.args.os_password
verify_pass = (
strutils.bool_from_string(cliutils.env("OS_VERIFY_PASSWORD"))
)
return self._prompt_password(verify_pass)
@property
def management_url(self):
if not HAS_KEYRING or not self.args.os_cache:
return None
management_url = None
try:
block = keyring.get_password('gyanclient_auth',
self._make_key())
if block:
_token, management_url, _tenant_id = block.split('|', 2)
except all_errors:
pass
return management_url
@property
def auth_token(self):
# Now is where it gets complicated since we
# want to look into the keyring module, if it
# exists and see if anything was provided in that
# file that we can use.
if not HAS_KEYRING or not self.args.os_cache:
return None
token = None
try:
block = keyring.get_password('gyanclient_auth',
self._make_key())
if block:
token, _management_url, _tenant_id = block.split('|', 2)
except all_errors:
pass
return token
@property
def tenant_id(self):
if not HAS_KEYRING or not self.args.os_cache:
return None
tenant_id = None
try:
block = keyring.get_password('gyanclient_auth',
self._make_key())
if block:
_token, _management_url, tenant_id = block.split('|', 2)
except all_errors:
pass
return tenant_id
class GyanClientArgumentParser(argparse.ArgumentParser):
def __init__(self, *args, **kwargs):
super(GyanClientArgumentParser, self).__init__(*args, **kwargs)
def error(self, message):
"""error(message: string)
Prints a usage message incorporating the message to stderr and
exits.
"""
self.print_usage(sys.stderr)
# FIXME(lzyeval): if changes occur in argparse.ArgParser._check_value
choose_from = ' (choose from'
progparts = self.prog.partition(' ')
self.exit(2, "error: %(errmsg)s\nTry '%(mainp)s help %(subp)s'"
" for more information.\n" %
{'errmsg': message.split(choose_from)[0],
'mainp': progparts[0],
'subp': progparts[2]})
class OpenStackGyanShell(object):
def get_base_parser(self):
parser = GyanClientArgumentParser(
prog='gyan',
description=__doc__.strip(),
epilog='See "gyan 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=version.version_info.version_string())
parser.add_argument('--debug',
default=False,
action='store_true',
help="Print debugging output.")
parser.add_argument('--os-cache',
default=strutils.bool_from_string(
cliutils.env('OS_CACHE', default=False)),
action='store_true',
help="Use the auth token cache. Defaults to False "
"if env[OS_CACHE] is not set.")
parser.add_argument('--os-region-name',
metavar='<region-name>',
default=os.environ.get('OS_REGION_NAME'),
help='Region name. Default=env[OS_REGION_NAME].')
# TODO(mattf) - add get_timings support to Client
# parser.add_argument('--timings',
# default=False,
# action='store_true',
# help="Print call timing info")
# TODO(mattf) - use timeout
# parser.add_argument('--timeout',
# default=600,
# metavar='<seconds>',
# type=positive_non_zero_float,
# help="Set HTTP call timeout (in seconds)")
parser.add_argument('--os-project-id',
metavar='<auth-project-id>',
default=cliutils.env('OS_PROJECT_ID',
default=None),
help='Defaults to env[OS_PROJECT_ID].')
parser.add_argument('--os-project-name',
metavar='<auth-project-name>',
default=cliutils.env('OS_PROJECT_NAME',
default=None),
help='Defaults to env[OS_PROJECT_NAME].')
parser.add_argument('--os-user-domain-id',
metavar='<auth-user-domain-id>',
default=cliutils.env('OS_USER_DOMAIN_ID'),
help='Defaults to env[OS_USER_DOMAIN_ID].')
parser.add_argument('--os-user-domain-name',
metavar='<auth-user-domain-name>',
default=cliutils.env('OS_USER_DOMAIN_NAME'),
help='Defaults to env[OS_USER_DOMAIN_NAME].')
parser.add_argument('--os-project-domain-id',
metavar='<auth-project-domain-id>',
default=cliutils.env('OS_PROJECT_DOMAIN_ID'),
help='Defaults to env[OS_PROJECT_DOMAIN_ID].')
parser.add_argument('--os-project-domain-name',
metavar='<auth-project-domain-name>',
default=cliutils.env('OS_PROJECT_DOMAIN_NAME'),
help='Defaults to env[OS_PROJECT_DOMAIN_NAME].')
parser.add_argument('--service-type',
metavar='<service-type>',
help='Defaults to ml for all '
'actions.')
parser.add_argument('--service_type',
help=argparse.SUPPRESS)
parser.add_argument('--endpoint-type',
metavar='<endpoint-type>',
default=cliutils.env(
'OS_ENDPOINT_TYPE',
default=DEFAULT_ENDPOINT_TYPE),
help='Defaults to env[OS_ENDPOINT_TYPE] or '
+ DEFAULT_ENDPOINT_TYPE + '.')
parser.add_argument('--gyan-api-version',
metavar='<gyan-api-ver>',
default=cliutils.env(
'GYAN_API_VERSION',
default=DEFAULT_API_VERSION),
help='Accepts X, X.Y (where X is major, Y is minor'
' part), defaults to env[GYAN_API_VERSION].')
parser.add_argument('--gyan_api_version',
help=argparse.SUPPRESS)
parser.add_argument('--os-cacert',
metavar='<ca-certificate>',
default=cliutils.env('OS_CACERT', default=None),
help='Specify a CA bundle file to use in '
'verifying a TLS (https) server certificate. '
'Defaults to env[OS_CACERT].')
parser.add_argument('--bypass-url',
metavar='<bypass-url>',
default=cliutils.env('BYPASS_URL', default=None),
dest='bypass_url',
help="Use this API endpoint instead of the "
"Service Catalog.")
parser.add_argument('--bypass_url',
help=argparse.SUPPRESS)
parser.add_argument('--insecure',
default=cliutils.env('GYANCLIENT_INSECURE',
default=False),
action='store_true',
help="Do not verify https connections")
if profiler:
parser.add_argument('--profile',
metavar='HMAC_KEY',
default=cliutils.env('OS_PROFILE',
default=None),
help='HMAC key to use for encrypting context '
'data for performance profiling of '
'operation. This key should be the '
'value of the HMAC key configured for '
'the OSprofiler middleware in gyan; it '
'is specified in the Gyan configuration '
'file at "/etc/gyan/gyan.conf". Without '
'the key, profiling functions will not '
'be triggered even if OSprofiler is '
'enabled on the server side.')
# The auth-system-plugins might require some extra options
auth.load_auth_system_opts(parser)
return parser
def get_subcommand_parser(self, version, do_help=False):
parser = self.get_base_parser()
self.subcommands = {}
subparsers = parser.add_subparsers(metavar='<subcommand>')
actions_modules = shell_v1.COMMAND_MODULES
for action_modules in actions_modules:
self._find_actions(subparsers, action_modules, version, do_help)
self._find_actions(subparsers, self, version, do_help)
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, version, do_help):
msg = _(" (Supported by API versions '%(start)s' - '%(end)s')")
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 ''
if hasattr(callback, "versioned"):
subs = api_versions.get_substitutions(callback)
if do_help:
desc += msg % {'start': subs[0].start_version.get_string(),
'end': subs[-1].end_version.get_string()}
else:
for versioned_method in subs:
if version.matches(versioned_method.start_version,
versioned_method.end_version):
callback = versioned_method.func
break
else:
continue
action_help = desc.strip()
exclusive_args = getattr(callback, 'exclusive_args', {})
arguments = getattr(callback, 'arguments', [])
subparser = (
subparsers.add_parser(command,
help=action_help,
description=desc,
add_help=False,
formatter_class=OpenStackHelpFormatter)
)
subparser.add_argument('-h', '--help',
action='help',
help=argparse.SUPPRESS,)
self.subcommands[command] = subparser
self._add_subparser_args(subparser, arguments, version, do_help,
msg)
self._add_subparser_exclusive_args(subparser, exclusive_args,
version, do_help, msg)
subparser.set_defaults(func=callback)
def _add_subparser_exclusive_args(self, subparser, exclusive_args,
version, do_help, msg):
for group_name, arguments in exclusive_args.items():
if group_name == '__required__':
continue
required = exclusive_args['__required__'][group_name]
exclusive_group = subparser.add_mutually_exclusive_group(
required=required)
self._add_subparser_args(exclusive_group, arguments,
version, do_help, msg)
def _add_subparser_args(self, subparser, arguments, version, do_help, msg):
for (args, kwargs) in arguments:
start_version = kwargs.get("start_version", None)
if start_version:
start_version = api_versions.APIVersion(start_version)
end_version = kwargs.get("end_version", None)
if end_version:
end_version = api_versions.APIVersion(end_version)
else:
end_version = api_versions.APIVersion(
"%s.latest" % start_version.ver_major)
if do_help:
kwargs["help"] = kwargs.get("help", "") + (msg % {
"start": start_version.get_string(),
"end": end_version.get_string()})
else:
if not version.matches(start_version, end_version):
continue
kw = kwargs.copy()
kw.pop("start_version", None)
kw.pop("end_version", None)
subparser.add_argument(*args, **kwargs)
def setup_debugging(self, debug):
if debug:
streamformat = "%(levelname)s (%(module)s:%(lineno)d) %(message)s"
# Set up the root logger to debug so that the submodules can
# print debug messages
logging.basicConfig(level=logging.DEBUG,
format=streamformat)
else:
streamformat = "%(levelname)s %(message)s"
logging.basicConfig(level=logging.CRITICAL,
format=streamformat)
def main(self, argv):
argv = list(argv)
# Parse args once to find version and debug settings
parser = self.get_base_parser()
(options, args) = parser.parse_known_args(argv)
self.setup_debugging(options.debug)
api_version = api_versions.get_api_version(options.gyan_api_version)
if '--endpoint_type' in argv:
spot = argv.index('--endpoint_type')
argv[spot] = '--endpoint-type'
subcommand_parser = self.get_subcommand_parser(
api_version, do_help=("help" in args))
self.parser = subcommand_parser
if options.help or not argv:
subcommand_parser.print_help()
return 0
args = subcommand_parser.parse_args(argv)
# Short-circuit and deal with help right away.
if not hasattr(args, 'func') or 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
(os_username, os_project_name, os_project_id,
os_user_domain_id, os_user_domain_name,
os_project_domain_id, os_project_domain_name,
os_auth_url, os_auth_system, endpoint_type,
service_type, bypass_url, insecure, os_cacert) = (
(args.os_username, args.os_project_name, args.os_project_id,
args.os_user_domain_id, args.os_user_domain_name,
args.os_project_domain_id, args.os_project_domain_name,
args.os_auth_url, args.os_auth_system, args.endpoint_type,
args.service_type, args.bypass_url, args.insecure,
args.os_cacert)
)
if os_auth_system and os_auth_system != "keystone":
auth_plugin = auth.load_plugin(os_auth_system)
else:
auth_plugin = None
# Fetched and set later as needed
os_password = None
if not endpoint_type:
endpoint_type = DEFAULT_ENDPOINT_TYPE
if not service_type:
service_type = DEFAULT_SERVICE_TYPE
# NA - there is only one service this CLI accesses
# service_type = utils.get_service_type(args.func) or service_type
# FIXME(usrleon): Here should be restrict for project id same as
# for os_username or os_password but for compatibility it is not.
if not cliutils.isunauthenticated(args.func):
if auth_plugin:
auth_plugin.parse_opts(args)
if not auth_plugin or not auth_plugin.opts:
if not os_username:
raise exc.CommandError("You must provide a username "
"via either --os-username or "
"env[OS_USERNAME]")
if not os_project_name and not os_project_id:
raise exc.CommandError("You must provide a project name "
"or project id via --os-project-name, "
"--os-project-id, env[OS_PROJECT_NAME] "
"or env[OS_PROJECT_ID]")
if not os_auth_url:
if os_auth_system and os_auth_system != 'keystone':
os_auth_url = auth_plugin.get_auth_url()
if not os_auth_url:
raise exc.CommandError("You must provide an auth url "
"via either --os-auth-url or "
"env[OS_AUTH_URL] or specify an "
"auth_system which defines a "
"default url with --os-auth-system "
"or env[OS_AUTH_SYSTEM]")
# Now check for the password/token of which pieces of the
# identifying keyring key can come from the underlying client
if not cliutils.isunauthenticated(args.func):
# NA - Client can't be used with SecretsHelper
if (auth_plugin and auth_plugin.opts and
"os_password" not in auth_plugin.opts):
use_pw = False
else:
use_pw = True
if use_pw:
# Auth using token must have failed or not happened
# at all, so now switch to password mode and save
# the token when its gotten... using our keyring
# saver
os_password = args.os_password
if not os_password:
raise exc.CommandError(
'Expecting a password provided via either '
'--os-password, env[OS_PASSWORD], or '
'prompted response')
client = base_client
kwargs = {}
if profiler:
kwargs["profile"] = args.profile
self.cs = client.Client(version=api_version,
username=os_username,
password=os_password,
project_id=os_project_id,
project_name=os_project_name,
user_domain_id=os_user_domain_id,
user_domain_name=os_user_domain_name,
project_domain_id=os_project_domain_id,
project_domain_name=os_project_domain_name,
auth_url=os_auth_url,
service_type=service_type,
region_name=args.os_region_name,
endpoint_override=bypass_url,
interface=endpoint_type,
insecure=insecure,
cacert=os_cacert,
**kwargs)
args.func(self.cs, args)
if profiler and args.profile:
trace_id = profiler.get().get_base_id()
print("To display trace use the command:\n\n"
" osprofiler trace show --html %s " % trace_id)
def _dump_timings(self, timings):
class Tyme(object):
def __init__(self, url, seconds):
self.url = url
self.seconds = seconds
results = [Tyme(url, end - start) for url, start, end in timings]
total = 0.0
for tyme in results:
total += tyme.seconds
results.append(Tyme("Total", total))
cliutils.print_list(results, ["url", "seconds"], sortby_index=None)
def do_bash_completion(self, _args):
"""Prints arguments for bash-completion.
Prints all of the commands and options to stdout so that the
gyan.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 sc._optionals._option_string_actions.keys():
options.add(option)
commands.remove('bash-completion')
commands.remove('bash_completion')
print(' '.join(commands | options))
@cliutils.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."""
command = getattr(args, 'command', '')
if command:
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):
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:
return OpenStackGyanShell().main(
map(encodeutils.safe_decode, sys.argv[1:]))
except Exception as e:
logger.debug(e, exc_info=1)
print("ERROR: %s" % encodeutils.safe_encode(six.text_type(e)),
file=sys.stderr)
sys.exit(1)
if __name__ == "__main__":
sys.exit(main())