Source code for ironicclient.common.apiclient.exceptions

# 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
#    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.

from http import client as http_client
import inspect
import sys

from ironicclient.common.i18n import _

[docs]class ClientException(Exception): """The base exception class for all exceptions this library raises.""" pass
[docs]class ValidationError(ClientException): """Error in validation on API client side.""" pass
[docs]class UnsupportedVersion(ClientException): """User is trying to use an unsupported version of the API.""" pass
[docs]class CommandError(ClientException): """Error in CLI tool.""" pass
[docs]class AuthorizationFailure(ClientException): """Cannot authorize API client.""" pass
[docs]class ConnectionError(ClientException): """Cannot connect to API service.""" pass
[docs]class ConnectionRefused(ConnectionError): """Connection refused while trying to connect to API service.""" pass
[docs]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
[docs]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
[docs]class NoUniqueMatch(ClientException): """Multiple entities found instead of one.""" pass
[docs]class EndpointException(ClientException): """Something is rotten in Service Catalog.""" pass
[docs]class EndpointNotFound(EndpointException): """Could not find requested endpoint in Service Catalog.""" pass
[docs]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
[docs]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)
[docs]class HTTPRedirection(HttpError): """HTTP Redirection.""" message = _("HTTP Redirection")
[docs]class HTTPClientError(HttpError): """Client-side HTTP error. Exception for cases in which the client seems to have erred. """ message = _("HTTP Client Error")
[docs]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")
[docs]class MultipleChoices(HTTPRedirection): """HTTP 300 - Multiple Choices. Indicates multiple options for the resource that the client may follow. """ http_status = http_client.MULTIPLE_CHOICES message = _("Multiple Choices")
[docs]class BadRequest(HTTPClientError): """HTTP 400 - Bad Request. The request cannot be fulfilled due to bad syntax. """ http_status = http_client.BAD_REQUEST message = _("Bad Request")
[docs]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 = http_client.UNAUTHORIZED message = _("Unauthorized")
[docs]class PaymentRequired(HTTPClientError): """HTTP 402 - Payment Required. Reserved for future use. """ http_status = http_client.PAYMENT_REQUIRED message = _("Payment Required")
[docs]class Forbidden(HTTPClientError): """HTTP 403 - Forbidden. The request was a valid request, but the server is refusing to respond to it. """ http_status = http_client.FORBIDDEN message = _("Forbidden")
[docs]class NotFound(HTTPClientError): """HTTP 404 - Not Found. The requested resource could not be found but may be available again in the future. """ http_status = http_client.NOT_FOUND message = _("Not Found")
[docs]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 = http_client.METHOD_NOT_ALLOWED message = _("Method Not Allowed")
[docs]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 = http_client.NOT_ACCEPTABLE message = _("Not Acceptable")
[docs]class ProxyAuthenticationRequired(HTTPClientError): """HTTP 407 - Proxy Authentication Required. The client must first authenticate itself with the proxy. """ http_status = http_client.PROXY_AUTHENTICATION_REQUIRED message = _("Proxy Authentication Required")
[docs]class RequestTimeout(HTTPClientError): """HTTP 408 - Request Timeout. The server timed out waiting for the request. """ http_status = http_client.REQUEST_TIMEOUT message = _("Request Timeout")
[docs]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 = http_client.CONFLICT message = _("Conflict")
[docs]class Gone(HTTPClientError): """HTTP 410 - Gone. Indicates that the resource requested is no longer available and will not be available again. """ http_status = http_client.GONE message = _("Gone")
[docs]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 = http_client.LENGTH_REQUIRED message = _("Length Required")
[docs]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 = http_client.PRECONDITION_FAILED message = _("Precondition Failed")
[docs]class RequestEntityTooLarge(HTTPClientError): """HTTP 413 - Request Entity Too Large. The request is larger than the server is willing or able to process. """ http_status = http_client.REQUEST_ENTITY_TOO_LARGE 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)
[docs]class RequestUriTooLong(HTTPClientError): """HTTP 414 - Request-URI Too Long. The URI provided was too long for the server to process. """ http_status = http_client.REQUEST_URI_TOO_LONG message = _("Request-URI Too Long")
[docs]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 = http_client.UNSUPPORTED_MEDIA_TYPE message = _("Unsupported Media Type")
[docs]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 = http_client.REQUESTED_RANGE_NOT_SATISFIABLE message = _("Requested Range Not Satisfiable")
[docs]class ExpectationFailed(HTTPClientError): """HTTP 417 - Expectation Failed. The server cannot meet the requirements of the Expect request-header field. """ http_status = http_client.EXPECTATION_FAILED message = _("Expectation Failed")
[docs]class UnprocessableEntity(HTTPClientError): """HTTP 422 - Unprocessable Entity. The request was well-formed but was unable to be followed due to semantic errors. """ http_status = http_client.UNPROCESSABLE_ENTITY message = _("Unprocessable Entity")
[docs]class InternalServerError(HttpServerError): """HTTP 500 - Internal Server Error. A generic error message, given when no more specific message is suitable. """ http_status = http_client.INTERNAL_SERVER_ERROR message = _("Internal Server Error")
# NotImplemented is a python keyword.
[docs]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 = http_client.NOT_IMPLEMENTED message = _("Not Implemented")
[docs]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 = http_client.BAD_GATEWAY message = _("Bad Gateway")
[docs]class ServiceUnavailable(HttpServerError): """HTTP 503 - Service Unavailable. The server is currently unavailable. """ http_status = http_client.SERVICE_UNAVAILABLE message = _("Service Unavailable")
[docs]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 = http_client.GATEWAY_TIMEOUT message = _("Gateway Timeout")
[docs]class HttpVersionNotSupported(HttpServerError): """HTTP 505 - HttpVersion Not Supported. The server does not support the HTTP protocol version used in the request. """ http_status = http_client.HTTP_VERSION_NOT_SUPPORTED 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 vars(sys.modules[__name__]).items() if inspect.isclass(obj) and getattr(obj, 'http_status', False) )
[docs]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 str(body)) elif content_type.startswith("text/"): kwargs["details"] = getattr(response, 'text', '') try: cls = _code_map[response.status_code] except KeyError: # 5XX status codes are server errors if response.status_code >= http_client.INTERNAL_SERVER_ERROR: cls = HttpServerError # 4XX status codes are client request errors elif (http_client.BAD_REQUEST <= response.status_code < http_client.INTERNAL_SERVER_ERROR): cls = HTTPClientError else: cls = HttpError return cls(**kwargs)