ca27736810
I suppose that methods get_resource_manager_extra_kwargs and add_resource_manager_extra_kwargs_hook were designed in those days when Nova API had extensions. Nowdays, Nova API has strict schema validation of requests, so no additional arguments are allowed and these methods look redundant. The fact that get_resource_manager_extra_kwargs lists of the objects added by add_resource_manager_extra_kwargs_hook whereas add_resource_manager_extra_kwargs_hook is not called anywhere doesn't add chances for leaving these methods in our code. Compatibility: both methods are designed for CLI and the CLI behaviour will not change after removing them, so we can do a cleanup without following standard deprecation cycle. Change-Id: Id61457c3db8a17e2294dc579b2519873927fec48
432 lines
12 KiB
Python
432 lines
12 KiB
Python
#
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# 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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import contextlib
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import json
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import os
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import re
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import textwrap
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import time
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import uuid
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from oslo_serialization import jsonutils
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from oslo_utils import encodeutils
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import prettytable
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import six
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from six.moves.urllib import parse
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from novaclient import exceptions
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from novaclient.i18n import _
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VALID_KEY_REGEX = re.compile(r"[\w\.\- :]+$", re.UNICODE)
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def env(*args, **kwargs):
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"""Returns the first environment variable set.
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If all are empty, defaults to '' or keyword arg `default`.
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"""
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for arg in args:
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value = os.environ.get(arg)
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if value:
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return value
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return kwargs.get('default', '')
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def get_service_type(f):
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"""Retrieves service type from function."""
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return getattr(f, 'service_type', None)
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def unauthenticated(func):
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"""Adds 'unauthenticated' attribute to decorated function.
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Usage:
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>>> @unauthenticated
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... def mymethod(f):
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... pass
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"""
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func.unauthenticated = True
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return func
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def isunauthenticated(func):
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"""Checks if the function does not require authentication.
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Mark such functions with the `@unauthenticated` decorator.
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:returns: bool
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"""
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return getattr(func, 'unauthenticated', False)
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def arg(*args, **kwargs):
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"""Decorator for CLI args.
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Example:
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>>> @arg("name", help="Name of the new entity")
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... def entity_create(args):
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... pass
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"""
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def _decorator(func):
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add_arg(func, *args, **kwargs)
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return func
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return _decorator
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def add_arg(func, *args, **kwargs):
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"""Bind CLI arguments to a shell.py `do_foo` function."""
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if not hasattr(func, 'arguments'):
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func.arguments = []
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# NOTE(sirp): avoid dups that can occur when the module is shared across
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# tests.
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if (args, kwargs) not in func.arguments:
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# Because of the semantics of decorator composition if we just append
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# to the options list positional options will appear to be backwards.
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func.arguments.insert(0, (args, kwargs))
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def service_type(stype):
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"""Adds 'service_type' attribute to decorated function.
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Usage:
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.. code-block:: python
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@service_type('volume')
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def mymethod(f):
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...
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"""
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def inner(f):
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f.service_type = stype
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return f
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return inner
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def pretty_choice_list(l):
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return ', '.join("'%s'" % i for i in l)
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def pretty_choice_dict(d):
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"""Returns a formatted dict as 'key=value'."""
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return pretty_choice_list(['%s=%s' % (k, d[k]) for k in sorted(d.keys())])
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def print_list(objs, fields, formatters={}, sortby_index=None):
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if sortby_index is None:
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sortby = None
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else:
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sortby = fields[sortby_index]
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mixed_case_fields = ['serverId']
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pt = prettytable.PrettyTable([f for f in fields], caching=False)
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pt.align = 'l'
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for o in objs:
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row = []
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for field in fields:
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if field in formatters:
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row.append(formatters[field](o))
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else:
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if field in mixed_case_fields:
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field_name = field.replace(' ', '_')
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else:
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field_name = field.lower().replace(' ', '_')
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data = getattr(o, field_name, '')
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if data is None:
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data = '-'
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# '\r' would break the table, so remove it.
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data = six.text_type(data).replace("\r", "")
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row.append(data)
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pt.add_row(row)
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if sortby is not None:
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result = encodeutils.safe_encode(pt.get_string(sortby=sortby))
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else:
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result = encodeutils.safe_encode(pt.get_string())
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if six.PY3:
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result = result.decode()
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print(result)
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def _flatten(data, prefix=None):
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"""Flatten a dict, using name as a prefix for the keys of dict.
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>>> _flatten('cpu_info', {'arch':'x86_64'})
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[('cpu_info_arch': 'x86_64')]
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"""
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if isinstance(data, dict):
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for key, value in data.items():
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new_key = '%s_%s' % (prefix, key) if prefix else key
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if isinstance(value, (dict, list)) and value:
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for item in _flatten(value, new_key):
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yield item
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else:
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yield new_key, value
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else:
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yield prefix, data
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def flatten_dict(data):
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"""Return a new dict whose sub-dicts have been merged into the
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original. Each of the parents keys are prepended to the child's
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to prevent collisions. Any string elements will be JSON parsed
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before flattening.
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>>> flatten_dict({'service': {'host':'cloud9@compute-068', 'id': 143}})
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{'service_host': colud9@compute-068', 'service_id': 143}
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"""
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data = data.copy()
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# Try and decode any nested JSON structures.
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for key, value in data.items():
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if isinstance(value, six.string_types):
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try:
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data[key] = json.loads(value)
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except ValueError:
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pass
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return dict(_flatten(data))
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def print_dict(d, dict_property="Property", dict_value="Value", wrap=0):
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pt = prettytable.PrettyTable([dict_property, dict_value], caching=False)
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pt.align = 'l'
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for k, v in sorted(d.items()):
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# convert dict to str to check length
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if isinstance(v, (dict, list)):
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v = jsonutils.dumps(v, ensure_ascii=False)
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if wrap > 0:
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v = textwrap.fill(six.text_type(v), wrap)
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# if value has a newline, add in multiple rows
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# e.g. fault with stacktrace
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if v and isinstance(v, six.string_types) and (r'\n' in v or '\r' in v):
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# '\r' would break the table, so remove it.
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if '\r' in v:
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v = v.replace('\r', '')
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lines = v.strip().split(r'\n')
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col1 = k
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for line in lines:
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pt.add_row([col1, line])
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col1 = ''
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else:
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if v is None:
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v = '-'
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pt.add_row([k, v])
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result = encodeutils.safe_encode(pt.get_string())
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if six.PY3:
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result = result.decode()
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print(result)
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def find_resource(manager, name_or_id, wrap_exception=True, **find_args):
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"""Helper for the _find_* methods."""
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# for str id which is not uuid (for Flavor, Keypair and hypervsior in cells
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# environments search currently)
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if getattr(manager, 'is_alphanum_id_allowed', False):
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try:
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return manager.get(name_or_id)
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except exceptions.NotFound:
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pass
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# first try to get entity as uuid
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try:
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tmp_id = encodeutils.safe_encode(name_or_id)
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if six.PY3:
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tmp_id = tmp_id.decode()
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uuid.UUID(tmp_id)
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return manager.get(tmp_id)
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except (TypeError, ValueError, exceptions.NotFound):
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pass
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# then try to get entity as name
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try:
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try:
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resource = getattr(manager, 'resource_class', None)
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name_attr = resource.NAME_ATTR if resource else 'name'
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kwargs = {name_attr: name_or_id}
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kwargs.update(find_args)
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return manager.find(**kwargs)
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except exceptions.NotFound:
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pass
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# then try to find entity by human_id
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try:
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return manager.find(human_id=name_or_id, **find_args)
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except exceptions.NotFound:
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pass
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except exceptions.NoUniqueMatch:
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msg = (_("Multiple %(class)s matches found for '%(name)s', use an ID "
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"to be more specific.") %
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{'class': manager.resource_class.__name__.lower(),
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'name': name_or_id})
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if wrap_exception:
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raise exceptions.CommandError(msg)
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raise exceptions.NoUniqueMatch(msg)
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# finally try to get entity as integer id
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try:
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return manager.get(int(name_or_id))
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except (TypeError, ValueError, exceptions.NotFound):
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msg = (_("No %(class)s with a name or ID of '%(name)s' exists.") %
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{'class': manager.resource_class.__name__.lower(),
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'name': name_or_id})
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if wrap_exception:
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raise exceptions.CommandError(msg)
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raise exceptions.NotFound(404, msg)
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def format_servers_list_networks(server):
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output = []
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for (network, addresses) in server.networks.items():
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if len(addresses) == 0:
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continue
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addresses_csv = ', '.join(addresses)
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group = "%s=%s" % (network, addresses_csv)
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output.append(group)
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return '; '.join(output)
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def format_security_groups(groups):
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return ', '.join(group['name'] for group in groups)
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def _format_field_name(attr):
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"""Format an object attribute in a human-friendly way."""
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# Split at ':' and leave the extension name as-is.
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parts = attr.rsplit(':', 1)
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name = parts[-1].replace('_', ' ')
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# Don't title() on mixed case
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if name.isupper() or name.islower():
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name = name.title()
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parts[-1] = name
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return ': '.join(parts)
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def make_field_formatter(attr, filters=None):
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"""
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Given an object attribute, return a formatted field name and a
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formatter suitable for passing to print_list.
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Optionally pass a dict mapping attribute names to a function. The function
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will be passed the value of the attribute and should return the string to
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display.
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"""
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filter_ = None
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if filters:
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filter_ = filters.get(attr)
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def get_field(obj):
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field = getattr(obj, attr, '')
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if field and filter_:
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field = filter_(field)
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return field
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name = _format_field_name(attr)
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formatter = get_field
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return name, formatter
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def safe_issubclass(*args):
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"""Like issubclass, but will just return False if not a class."""
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try:
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if issubclass(*args):
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return True
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except TypeError:
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pass
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return False
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def do_action_on_many(action, resources, success_msg, error_msg):
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"""Helper to run an action on many resources."""
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failure_flag = False
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for resource in resources:
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try:
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action(resource)
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print(success_msg % resource)
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except Exception as e:
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failure_flag = True
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print(encodeutils.safe_encode(six.text_type(e)))
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if failure_flag:
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raise exceptions.CommandError(error_msg)
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def is_integer_like(val):
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"""Returns validation of a value as an integer."""
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try:
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int(val)
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return True
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except (TypeError, ValueError, AttributeError):
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return False
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def validate_flavor_metadata_keys(keys):
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for key in keys:
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valid_name = VALID_KEY_REGEX.match(key)
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if not valid_name:
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msg = _('Invalid key: "%s". Keys may only contain letters, '
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'numbers, spaces, underscores, periods, colons and '
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'hyphens.')
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raise exceptions.CommandError(msg % key)
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@contextlib.contextmanager
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def record_time(times, enabled, *args):
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"""Record the time of a specific action.
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:param times: A list of tuples holds time data.
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:param enabled: Whether timing is enabled.
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:param args: Other data to be stored besides time data, these args
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will be joined to a string.
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"""
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if not enabled:
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yield
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else:
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start = time.time()
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yield
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end = time.time()
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times.append((' '.join(args), start, end))
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def prepare_query_string(params):
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"""Convert dict params to query string"""
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# Transform the dict to a sequence of two-element tuples in fixed
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# order, then the encoded string will be consistent in Python 2&3.
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if not params:
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return ''
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params = sorted(params.items(), key=lambda x: x[0])
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return '?%s' % parse.urlencode(params) if params else ''
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def get_url_with_filter(url, filters):
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query_string = prepare_query_string(filters)
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url = "%s%s" % (url, query_string)
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return url
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