From c2898998a7c28e4c6cff2f21acb4846638a810fb Mon Sep 17 00:00:00 2001 From: Abhishek Kekane Date: Thu, 3 Nov 2016 17:23:41 +0530 Subject: Move old oslo-incubator code out of openstack/common As part of the first community-wide goal, teams were asked to remove the openstack/common package of their projects if one existed. This was a byproduct of the old oslo-incubator form of syncing common functionality. Package openstack/common/apiclient is moved to glanceclient/v1 package as it is used by v1 api only. NOTE: Removed glanceclient/common/base.py as it is deprecated and not used anywhere. Closes-Bug: #1639487 Change-Id: Ib3ac09743ce761ab0186e99e1c9de02517f89510 --- glanceclient/v1/apiclient/__init__.py | 0 glanceclient/v1/apiclient/base.py | 529 ++++++++++++++++++++++++++++++++ glanceclient/v1/apiclient/exceptions.py | 477 ++++++++++++++++++++++++++++ glanceclient/v1/apiclient/utils.py | 98 ++++++ 4 files changed, 1104 insertions(+) create mode 100644 glanceclient/v1/apiclient/__init__.py create mode 100644 glanceclient/v1/apiclient/base.py create mode 100644 glanceclient/v1/apiclient/exceptions.py create mode 100644 glanceclient/v1/apiclient/utils.py (limited to 'glanceclient/v1/apiclient') diff --git a/glanceclient/v1/apiclient/__init__.py b/glanceclient/v1/apiclient/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/glanceclient/v1/apiclient/base.py b/glanceclient/v1/apiclient/base.py new file mode 100644 index 0000000..cb48096 --- /dev/null +++ b/glanceclient/v1/apiclient/base.py @@ -0,0 +1,529 @@ +# Copyright 2010 Jacob Kaplan-Moss +# Copyright 2011 OpenStack Foundation +# Copyright 2012 Grid Dynamics +# Copyright 2013 OpenStack Foundation +# All Rights Reserved. +# +# 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. + +""" +Base utilities to build API operation managers and objects on top of. +""" + +######################################################################## +# +# THIS MODULE IS DEPRECATED +# +# Please refer to +# https://etherpad.openstack.org/p/kilo-glanceclient-library-proposals for +# the discussion leading to this deprecation. +# +# We recommend checking out the python-openstacksdk project +# (https://launchpad.net/python-openstacksdk) instead. +# +######################################################################## + + +# E1102: %s is not callable +# pylint: disable=E1102 + +import abc +import copy + +from oslo_utils import strutils +import six +from six.moves.urllib import parse + +from glanceclient._i18n import _ +from glanceclient.v1.apiclient import exceptions + + +def getid(obj): + """Return id if argument is a Resource. + + Abstracts the common pattern of allowing both an object or an object's ID + (UUID) as a parameter when dealing with relationships. + """ + try: + if obj.uuid: + return obj.uuid + except AttributeError: + pass + try: + return obj.id + except AttributeError: + return obj + + +# TODO(aababilov): call run_hooks() in HookableMixin's child classes +class HookableMixin(object): + """Mixin so classes can register and run hooks.""" + _hooks_map = {} + + @classmethod + def add_hook(cls, hook_type, hook_func): + """Add a new hook of specified type. + + :param cls: class that registers hooks + :param hook_type: hook type, e.g., '__pre_parse_args__' + :param hook_func: hook function + """ + if hook_type not in cls._hooks_map: + cls._hooks_map[hook_type] = [] + + cls._hooks_map[hook_type].append(hook_func) + + @classmethod + def run_hooks(cls, hook_type, *args, **kwargs): + """Run all hooks of specified type. + + :param cls: class that registers hooks + :param hook_type: hook type, e.g., '__pre_parse_args__' + :param args: args to be passed to every hook function + :param kwargs: kwargs to be passed to every hook function + """ + hook_funcs = cls._hooks_map.get(hook_type) or [] + for hook_func in hook_funcs: + hook_func(*args, **kwargs) + + +class BaseManager(HookableMixin): + """Basic manager type providing common operations. + + Managers interact with a particular type of API (servers, flavors, images, + etc.) and provide CRUD operations for them. + """ + resource_class = None + + def __init__(self, client): + """Initializes BaseManager with `client`. + + :param client: instance of BaseClient descendant for HTTP requests + """ + super(BaseManager, self).__init__() + self.client = client + + def _list(self, url, response_key=None, obj_class=None, json=None): + """List the collection. + + :param url: a partial URL, e.g., '/servers' + :param response_key: the key to be looked up in response dictionary, + e.g., 'servers'. If response_key is None - all response body + will be used. + :param obj_class: class for constructing the returned objects + (self.resource_class will be used by default) + :param json: data that will be encoded as JSON and passed in POST + request (GET will be sent by default) + """ + if json: + body = self.client.post(url, json=json).json() + else: + body = self.client.get(url).json() + + if obj_class is None: + obj_class = self.resource_class + + data = body[response_key] if response_key is not None else body + # NOTE(ja): keystone returns values as list as {'values': [ ... ]} + # unlike other services which just return the list... + try: + data = data['values'] + except (KeyError, TypeError): + pass + + return [obj_class(self, res, loaded=True) for res in data if res] + + def _get(self, url, response_key=None): + """Get an object from collection. + + :param url: a partial URL, e.g., '/servers' + :param response_key: the key to be looked up in response dictionary, + e.g., 'server'. If response_key is None - all response body + will be used. + """ + body = self.client.get(url).json() + data = body[response_key] if response_key is not None else body + return self.resource_class(self, data, loaded=True) + + def _head(self, url): + """Retrieve request headers for an object. + + :param url: a partial URL, e.g., '/servers' + """ + resp = self.client.head(url) + return resp.status_code == 204 + + def _post(self, url, json, response_key=None, return_raw=False): + """Create an object. + + :param url: a partial URL, e.g., '/servers' + :param json: data that will be encoded as JSON and passed in POST + request (GET will be sent by default) + :param response_key: the key to be looked up in response dictionary, + e.g., 'server'. If response_key is None - all response body + will be used. + :param return_raw: flag to force returning raw JSON instead of + Python object of self.resource_class + """ + body = self.client.post(url, json=json).json() + data = body[response_key] if response_key is not None else body + if return_raw: + return data + return self.resource_class(self, data) + + def _put(self, url, json=None, response_key=None): + """Update an object with PUT method. + + :param url: a partial URL, e.g., '/servers' + :param json: data that will be encoded as JSON and passed in POST + request (GET will be sent by default) + :param response_key: the key to be looked up in response dictionary, + e.g., 'servers'. If response_key is None - all response body + will be used. + """ + resp = self.client.put(url, json=json) + # PUT requests may not return a body + if resp.content: + body = resp.json() + if response_key is not None: + return self.resource_class(self, body[response_key]) + else: + return self.resource_class(self, body) + + def _patch(self, url, json=None, response_key=None): + """Update an object with PATCH method. + + :param url: a partial URL, e.g., '/servers' + :param json: data that will be encoded as JSON and passed in POST + request (GET will be sent by default) + :param response_key: the key to be looked up in response dictionary, + e.g., 'servers'. If response_key is None - all response body + will be used. + """ + body = self.client.patch(url, json=json).json() + if response_key is not None: + return self.resource_class(self, body[response_key]) + else: + return self.resource_class(self, body) + + def _delete(self, url): + """Delete an object. + + :param url: a partial URL, e.g., '/servers/my-server' + """ + return self.client.delete(url) + + +@six.add_metaclass(abc.ABCMeta) +class ManagerWithFind(BaseManager): + """Manager with additional `find()`/`findall()` methods.""" + + @abc.abstractmethod + def list(self): + pass + + def find(self, **kwargs): + """Find a single item with attributes matching ``**kwargs``. + + This isn't very efficient: it loads the entire list then filters on + the Python side. + """ + matches = self.findall(**kwargs) + num_matches = len(matches) + if num_matches == 0: + msg = _("No %(name)s matching %(args)s.") % { + 'name': self.resource_class.__name__, + 'args': kwargs + } + raise exceptions.NotFound(msg) + elif num_matches > 1: + raise exceptions.NoUniqueMatch() + else: + return matches[0] + + def findall(self, **kwargs): + """Find all items with attributes matching ``**kwargs``. + + This isn't very efficient: it loads the entire list then filters on + the Python side. + """ + found = [] + searches = kwargs.items() + + for obj in self.list(): + try: + if all(getattr(obj, attr) == value + for (attr, value) in searches): + found.append(obj) + except AttributeError: + continue + + return found + + +class CrudManager(BaseManager): + """Base manager class for manipulating entities. + + Children of this class are expected to define a `collection_key` and `key`. + + - `collection_key`: Usually a plural noun by convention (e.g. `entities`); + used to refer collections in both URL's (e.g. `/v3/entities`) and JSON + objects containing a list of member resources (e.g. `{'entities': [{}, + {}, {}]}`). + - `key`: Usually a singular noun by convention (e.g. `entity`); used to + refer to an individual member of the collection. + + """ + collection_key = None + key = None + + def build_url(self, base_url=None, **kwargs): + """Builds a resource URL for the given kwargs. + + Given an example collection where `collection_key = 'entities'` and + `key = 'entity'`, the following URL's could be generated. + + By default, the URL will represent a collection of entities, e.g.:: + + /entities + + If kwargs contains an `entity_id`, then the URL will represent a + specific member, e.g.:: + + /entities/{entity_id} + + :param base_url: if provided, the generated URL will be appended to it + """ + url = base_url if base_url is not None else '' + + url += '/%s' % self.collection_key + + # do we have a specific entity? + entity_id = kwargs.get('%s_id' % self.key) + if entity_id is not None: + url += '/%s' % entity_id + + return url + + def _filter_kwargs(self, kwargs): + """Drop null values and handle ids.""" + for key, ref in six.iteritems(kwargs.copy()): + if ref is None: + kwargs.pop(key) + else: + if isinstance(ref, Resource): + kwargs.pop(key) + kwargs['%s_id' % key] = getid(ref) + return kwargs + + def create(self, **kwargs): + kwargs = self._filter_kwargs(kwargs) + return self._post( + self.build_url(**kwargs), + {self.key: kwargs}, + self.key) + + def get(self, **kwargs): + kwargs = self._filter_kwargs(kwargs) + return self._get( + self.build_url(**kwargs), + self.key) + + def head(self, **kwargs): + kwargs = self._filter_kwargs(kwargs) + return self._head(self.build_url(**kwargs)) + + def list(self, base_url=None, **kwargs): + """List the collection. + + :param base_url: if provided, the generated URL will be appended to it + """ + kwargs = self._filter_kwargs(kwargs) + + return self._list( + '%(base_url)s%(query)s' % { + 'base_url': self.build_url(base_url=base_url, **kwargs), + 'query': '?%s' % parse.urlencode(kwargs) if kwargs else '', + }, + self.collection_key) + + def put(self, base_url=None, **kwargs): + """Update an element. + + :param base_url: if provided, the generated URL will be appended to it + """ + kwargs = self._filter_kwargs(kwargs) + + return self._put(self.build_url(base_url=base_url, **kwargs)) + + def update(self, **kwargs): + kwargs = self._filter_kwargs(kwargs) + params = kwargs.copy() + params.pop('%s_id' % self.key) + + return self._patch( + self.build_url(**kwargs), + {self.key: params}, + self.key) + + def delete(self, **kwargs): + kwargs = self._filter_kwargs(kwargs) + + return self._delete( + self.build_url(**kwargs)) + + def find(self, base_url=None, **kwargs): + """Find a single item with attributes matching ``**kwargs``. + + :param base_url: if provided, the generated URL will be appended to it + """ + kwargs = self._filter_kwargs(kwargs) + + rl = self._list( + '%(base_url)s%(query)s' % { + 'base_url': self.build_url(base_url=base_url, **kwargs), + 'query': '?%s' % parse.urlencode(kwargs) if kwargs else '', + }, + self.collection_key) + num = len(rl) + + if num == 0: + msg = _("No %(name)s matching %(args)s.") % { + 'name': self.resource_class.__name__, + 'args': kwargs + } + raise exceptions.NotFound(msg) + elif num > 1: + raise exceptions.NoUniqueMatch + else: + return rl[0] + + +class Extension(HookableMixin): + """Extension descriptor.""" + + SUPPORTED_HOOKS = ('__pre_parse_args__', '__post_parse_args__') + manager_class = None + + def __init__(self, name, module): + super(Extension, self).__init__() + self.name = name + self.module = module + self._parse_extension_module() + + def _parse_extension_module(self): + self.manager_class = None + for attr_name, attr_value in self.module.__dict__.items(): + if attr_name in self.SUPPORTED_HOOKS: + self.add_hook(attr_name, attr_value) + else: + try: + if issubclass(attr_value, BaseManager): + self.manager_class = attr_value + except TypeError: + pass + + def __repr__(self): + return "" % self.name + + +class Resource(object): + """Base class for OpenStack resources (tenant, user, etc.). + + This is pretty much just a bag for attributes. + """ + + HUMAN_ID = False + NAME_ATTR = 'name' + + def __init__(self, manager, info, loaded=False): + """Populate and bind to a manager. + + :param manager: BaseManager object + :param info: dictionary representing resource attributes + :param loaded: prevent lazy-loading if set to True + """ + self.manager = manager + self._info = info + self._add_details(info) + self._loaded = loaded + + def __repr__(self): + reprkeys = sorted(k + for k in self.__dict__.keys() + if k[0] != '_' and k != 'manager') + info = ", ".join("%s=%s" % (k, getattr(self, k)) for k in reprkeys) + return "<%s %s>" % (self.__class__.__name__, info) + + @property + def human_id(self): + """Human-readable ID which can be used for bash completion.""" + if self.HUMAN_ID: + name = getattr(self, self.NAME_ATTR, None) + if name is not None: + return strutils.to_slug(name) + return None + + def _add_details(self, info): + for (k, v) in six.iteritems(info): + try: + setattr(self, k, v) + self._info[k] = v + except AttributeError: + # In this case we already defined the attribute on the class + pass + + def __getattr__(self, k): + if k not in self.__dict__: + # NOTE(bcwaldon): disallow lazy-loading if already loaded once + if not self.is_loaded(): + self.get() + return self.__getattr__(k) + + raise AttributeError(k) + else: + return self.__dict__[k] + + def get(self): + """Support for lazy loading details. + + Some clients, such as novaclient have the option to lazy load the + details, details which can be loaded with this function. + """ + # set_loaded() first ... so if we have to bail, we know we tried. + self.set_loaded(True) + if not hasattr(self.manager, 'get'): + return + + new = self.manager.get(self.id) + if new: + self._add_details(new._info) + self._add_details( + {'x_request_id': self.manager.client.last_request_id}) + + def __eq__(self, other): + if not isinstance(other, Resource): + return NotImplemented + # two resources of different types are not equal + if not isinstance(other, self.__class__): + return False + return self._info == other._info + + def is_loaded(self): + return self._loaded + + def set_loaded(self, val): + self._loaded = val + + def to_dict(self): + return copy.deepcopy(self._info) diff --git a/glanceclient/v1/apiclient/exceptions.py b/glanceclient/v1/apiclient/exceptions.py new file mode 100644 index 0000000..5bda5f0 --- /dev/null +++ b/glanceclient/v1/apiclient/exceptions.py @@ -0,0 +1,477 @@ +# Copyright 2010 Jacob Kaplan-Moss +# Copyright 2011 Nebula, Inc. +# Copyright 2013 Alessio Ababilov +# Copyright 2013 OpenStack Foundation +# All Rights Reserved. +# +# 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. + +""" +Exception definitions. +""" + +######################################################################## +# +# THIS MODULE IS DEPRECATED +# +# Please refer to +# https://etherpad.openstack.org/p/kilo-glanceclient-library-proposals for +# the discussion leading to this deprecation. +# +# We recommend checking out the python-openstacksdk project +# (https://launchpad.net/python-openstacksdk) instead. +# +######################################################################## + +import inspect +import sys + +import six + +from glanceclient._i18n import _ + + +class ClientException(Exception): + """The base exception class for all exceptions this library raises.""" + pass + + +class ValidationError(ClientException): + """Error in validation on API client side.""" + pass + + +class UnsupportedVersion(ClientException): + """User is trying to use an unsupported version of the API.""" + pass + + +class CommandError(ClientException): + """Error in CLI tool.""" + pass + + +class AuthorizationFailure(ClientException): + """Cannot authorize API client.""" + pass + + +class ConnectionError(ClientException): + """Cannot connect to API service.""" + pass + + +class ConnectionRefused(ConnectionError): + """Connection refused while trying to connect to API service.""" + pass + + +class AuthPluginOptionsMissing(AuthorizationFailure): + """Auth plugin misses some options.""" + def __init__(self, opt_names): + super(AuthPluginOptionsMissing, self).__init__( + _("Authentication failed. Missing options: %s") % + ", ".join(opt_names)) + self.opt_names = opt_names + + +class AuthSystemNotFound(AuthorizationFailure): + """User has specified an AuthSystem that is not installed.""" + def __init__(self, auth_system): + super(AuthSystemNotFound, self).__init__( + _("AuthSystemNotFound: %r") % auth_system) + self.auth_system = auth_system + + +class NoUniqueMatch(ClientException): + """Multiple entities found instead of one.""" + pass + + +class EndpointException(ClientException): + """Something is rotten in Service Catalog.""" + pass + + +class EndpointNotFound(EndpointException): + """Could not find requested endpoint in Service Catalog.""" + pass + + +class AmbiguousEndpoints(EndpointException): + """Found more than one matching endpoint in Service Catalog.""" + def __init__(self, endpoints=None): + super(AmbiguousEndpoints, self).__init__( + _("AmbiguousEndpoints: %r") % endpoints) + self.endpoints = endpoints + + +class HttpError(ClientException): + """The base exception class for all HTTP exceptions.""" + http_status = 0 + message = _("HTTP Error") + + def __init__(self, message=None, details=None, + response=None, request_id=None, + url=None, method=None, http_status=None): + self.http_status = http_status or self.http_status + self.message = message or self.message + self.details = details + self.request_id = request_id + self.response = response + self.url = url + self.method = method + formatted_string = "%s (HTTP %s)" % (self.message, self.http_status) + if request_id: + formatted_string += " (Request-ID: %s)" % request_id + super(HttpError, self).__init__(formatted_string) + + +class HTTPRedirection(HttpError): + """HTTP Redirection.""" + message = _("HTTP Redirection") + + +class HTTPClientError(HttpError): + """Client-side HTTP error. + + Exception for cases in which the client seems to have erred. + """ + message = _("HTTP Client Error") + + +class HttpServerError(HttpError): + """Server-side HTTP error. + + Exception for cases in which the server is aware that it has + erred or is incapable of performing the request. + """ + message = _("HTTP Server Error") + + +class MultipleChoices(HTTPRedirection): + """HTTP 300 - Multiple Choices. + + Indicates multiple options for the resource that the client may follow. + """ + + http_status = 300 + message = _("Multiple Choices") + + +class BadRequest(HTTPClientError): + """HTTP 400 - Bad Request. + + The request cannot be fulfilled due to bad syntax. + """ + http_status = 400 + message = _("Bad Request") + + +class Unauthorized(HTTPClientError): + """HTTP 401 - Unauthorized. + + Similar to 403 Forbidden, but specifically for use when authentication + is required and has failed or has not yet been provided. + """ + http_status = 401 + message = _("Unauthorized") + + +class PaymentRequired(HTTPClientError): + """HTTP 402 - Payment Required. + + Reserved for future use. + """ + http_status = 402 + message = _("Payment Required") + + +class Forbidden(HTTPClientError): + """HTTP 403 - Forbidden. + + The request was a valid request, but the server is refusing to respond + to it. + """ + http_status = 403 + message = _("Forbidden") + + +class NotFound(HTTPClientError): + """HTTP 404 - Not Found. + + The requested resource could not be found but may be available again + in the future. + """ + http_status = 404 + message = _("Not Found") + + +class MethodNotAllowed(HTTPClientError): + """HTTP 405 - Method Not Allowed. + + A request was made of a resource using a request method not supported + by that resource. + """ + http_status = 405 + message = _("Method Not Allowed") + + +class NotAcceptable(HTTPClientError): + """HTTP 406 - Not Acceptable. + + The requested resource is only capable of generating content not + acceptable according to the Accept headers sent in the request. + """ + http_status = 406 + message = _("Not Acceptable") + + +class ProxyAuthenticationRequired(HTTPClientError): + """HTTP 407 - Proxy Authentication Required. + + The client must first authenticate itself with the proxy. + """ + http_status = 407 + message = _("Proxy Authentication Required") + + +class RequestTimeout(HTTPClientError): + """HTTP 408 - Request Timeout. + + The server timed out waiting for the request. + """ + http_status = 408 + message = _("Request Timeout") + + +class Conflict(HTTPClientError): + """HTTP 409 - Conflict. + + Indicates that the request could not be processed because of conflict + in the request, such as an edit conflict. + """ + http_status = 409 + message = _("Conflict") + + +class Gone(HTTPClientError): + """HTTP 410 - Gone. + + Indicates that the resource requested is no longer available and will + not be available again. + """ + http_status = 410 + message = _("Gone") + + +class LengthRequired(HTTPClientError): + """HTTP 411 - Length Required. + + The request did not specify the length of its content, which is + required by the requested resource. + """ + http_status = 411 + message = _("Length Required") + + +class PreconditionFailed(HTTPClientError): + """HTTP 412 - Precondition Failed. + + The server does not meet one of the preconditions that the requester + put on the request. + """ + http_status = 412 + message = _("Precondition Failed") + + +class RequestEntityTooLarge(HTTPClientError): + """HTTP 413 - Request Entity Too Large. + + The request is larger than the server is willing or able to process. + """ + http_status = 413 + message = _("Request Entity Too Large") + + def __init__(self, *args, **kwargs): + try: + self.retry_after = int(kwargs.pop('retry_after')) + except (KeyError, ValueError): + self.retry_after = 0 + + super(RequestEntityTooLarge, self).__init__(*args, **kwargs) + + +class RequestUriTooLong(HTTPClientError): + """HTTP 414 - Request-URI Too Long. + + The URI provided was too long for the server to process. + """ + http_status = 414 + message = _("Request-URI Too Long") + + +class UnsupportedMediaType(HTTPClientError): + """HTTP 415 - Unsupported Media Type. + + The request entity has a media type which the server or resource does + not support. + """ + http_status = 415 + message = _("Unsupported Media Type") + + +class RequestedRangeNotSatisfiable(HTTPClientError): + """HTTP 416 - Requested Range Not Satisfiable. + + The client has asked for a portion of the file, but the server cannot + supply that portion. + """ + http_status = 416 + message = _("Requested Range Not Satisfiable") + + +class ExpectationFailed(HTTPClientError): + """HTTP 417 - Expectation Failed. + + The server cannot meet the requirements of the Expect request-header field. + """ + http_status = 417 + message = _("Expectation Failed") + + +class UnprocessableEntity(HTTPClientError): + """HTTP 422 - Unprocessable Entity. + + The request was well-formed but was unable to be followed due to semantic + errors. + """ + http_status = 422 + message = _("Unprocessable Entity") + + +class InternalServerError(HttpServerError): + """HTTP 500 - Internal Server Error. + + A generic error message, given when no more specific message is suitable. + """ + http_status = 500 + message = _("Internal Server Error") + + +# NotImplemented is a python keyword. +class HttpNotImplemented(HttpServerError): + """HTTP 501 - Not Implemented. + + The server either does not recognize the request method, or it lacks + the ability to fulfill the request. + """ + http_status = 501 + message = _("Not Implemented") + + +class BadGateway(HttpServerError): + """HTTP 502 - Bad Gateway. + + The server was acting as a gateway or proxy and received an invalid + response from the upstream server. + """ + http_status = 502 + message = _("Bad Gateway") + + +class ServiceUnavailable(HttpServerError): + """HTTP 503 - Service Unavailable. + + The server is currently unavailable. + """ + http_status = 503 + message = _("Service Unavailable") + + +class GatewayTimeout(HttpServerError): + """HTTP 504 - Gateway Timeout. + + The server was acting as a gateway or proxy and did not receive a timely + response from the upstream server. + """ + http_status = 504 + message = _("Gateway Timeout") + + +class HttpVersionNotSupported(HttpServerError): + """HTTP 505 - HttpVersion Not Supported. + + The server does not support the HTTP protocol version used in the request. + """ + http_status = 505 + message = _("HTTP Version Not Supported") + + +# _code_map contains all the classes that have http_status attribute. +_code_map = dict( + (getattr(obj, 'http_status', None), obj) + for name, obj in six.iteritems(vars(sys.modules[__name__])) + if inspect.isclass(obj) and getattr(obj, 'http_status', False) +) + + +def from_response(response, method, url): + """Returns an instance of :class:`HttpError` or subclass based on response. + + :param response: instance of `requests.Response` class + :param method: HTTP method used for request + :param url: URL used for request + """ + + req_id = response.headers.get("x-openstack-request-id") + # NOTE(hdd) true for older versions of nova and cinder + if not req_id: + req_id = response.headers.get("x-compute-request-id") + kwargs = { + "http_status": response.status_code, + "response": response, + "method": method, + "url": url, + "request_id": req_id, + } + if "retry-after" in response.headers: + kwargs["retry_after"] = response.headers["retry-after"] + + content_type = response.headers.get("Content-Type", "") + if content_type.startswith("application/json"): + try: + body = response.json() + except ValueError: + pass + else: + if isinstance(body, dict): + error = body.get(list(body)[0]) + if isinstance(error, dict): + kwargs["message"] = (error.get("message") or + error.get("faultstring")) + kwargs["details"] = (error.get("details") or + six.text_type(body)) + elif content_type.startswith("text/"): + kwargs["details"] = getattr(response, 'text', '') + + try: + cls = _code_map[response.status_code] + except KeyError: + if 500 <= response.status_code < 600: + cls = HttpServerError + elif 400 <= response.status_code < 500: + cls = HTTPClientError + else: + cls = HttpError + return cls(**kwargs) diff --git a/glanceclient/v1/apiclient/utils.py b/glanceclient/v1/apiclient/utils.py new file mode 100644 index 0000000..814a37b --- /dev/null +++ b/glanceclient/v1/apiclient/utils.py @@ -0,0 +1,98 @@ +# +# 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 MODULE IS DEPRECATED +# +# Please refer to +# https://etherpad.openstack.org/p/kilo-glanceclient-library-proposals for +# the discussion leading to this deprecation. +# +# We recommend checking out the python-openstacksdk project +# (https://launchpad.net/python-openstacksdk) instead. +# +######################################################################## + +from oslo_utils import encodeutils +from oslo_utils import uuidutils +import six + +from glanceclient._i18n import _ +from glanceclient.v1.apiclient import exceptions + + +def find_resource(manager, name_or_id, **find_args): + """Look for resource in a given manager. + + Used as a helper for the _find_* methods. + Example: + + .. code-block:: python + + def _find_hypervisor(cs, hypervisor): + #Get a hypervisor by name or ID. + return cliutils.find_resource(cs.hypervisors, hypervisor) + """ + # first try to get entity as integer id + try: + return manager.get(int(name_or_id)) + except (TypeError, ValueError, exceptions.NotFound): + pass + + # now try to get entity as uuid + try: + if six.PY2: + tmp_id = encodeutils.safe_encode(name_or_id) + else: + tmp_id = encodeutils.safe_decode(name_or_id) + + if uuidutils.is_uuid_like(tmp_id): + return manager.get(tmp_id) + except (TypeError, ValueError, exceptions.NotFound): + pass + + # for str id which is not uuid + if getattr(manager, 'is_alphanum_id_allowed', False): + try: + return manager.get(name_or_id) + except exceptions.NotFound: + pass + + try: + try: + return manager.find(human_id=name_or_id, **find_args) + except exceptions.NotFound: + pass + + # finally try to find entity by name + try: + resource = getattr(manager, 'resource_class', None) + name_attr = resource.NAME_ATTR if resource else 'name' + kwargs = {name_attr: name_or_id} + kwargs.update(find_args) + return manager.find(**kwargs) + except exceptions.NotFound: + msg = _("No %(name)s with a name or " + "ID of '%(name_or_id)s' exists.") % { + "name": manager.resource_class.__name__.lower(), + "name_or_id": name_or_id + } + raise exceptions.CommandError(msg) + except exceptions.NoUniqueMatch: + msg = _("Multiple %(name)s matches found for " + "'%(name_or_id)s', use an ID to be more specific.") % { + "name": manager.resource_class.__name__.lower(), + "name_or_id": name_or_id + } + raise exceptions.CommandError(msg) -- cgit v1.2.1