208 lines
5.0 KiB
Python
208 lines
5.0 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2015 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Exceptions for generated client libraries."""
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class Error(Exception):
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"""Base class for all exceptions."""
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class TypecheckError(Error, TypeError):
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"""An object of an incorrect type is provided."""
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class NotFoundError(Error):
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"""A specified resource could not be found."""
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class UserError(Error):
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"""Base class for errors related to user input."""
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class InvalidDataError(Error):
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"""Base class for any invalid data error."""
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class CommunicationError(Error):
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"""Any communication error talking to an API server."""
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class HttpError(CommunicationError):
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"""Error making a request. Soon to be HttpError."""
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def __init__(self, response, content, url,
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method_config=None, request=None):
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error_message = HttpError._build_message(response, content, url)
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super(HttpError, self).__init__(error_message)
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self.response = response
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self.content = content
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self.url = url
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self.method_config = method_config
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self.request = request
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def __str__(self):
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return HttpError._build_message(self.response, self.content, self.url)
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@staticmethod
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def _build_message(response, content, url):
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if isinstance(content, bytes):
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content = content.decode('ascii', 'replace')
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return 'HttpError accessing <%s>: response: <%s>, content <%s>' % (
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url, response, content)
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@property
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def status_code(self):
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# TODO(user): Turn this into something better than a
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# KeyError if there is no status.
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return int(self.response['status'])
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@classmethod
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def FromResponse(cls, http_response, **kwargs):
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try:
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status_code = int(http_response.info.get('status'))
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error_cls = _HTTP_ERRORS.get(status_code, cls)
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except ValueError:
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error_cls = cls
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return error_cls(http_response.info, http_response.content,
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http_response.request_url, **kwargs)
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class HttpBadRequestError(HttpError):
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"""HTTP 400 Bad Request."""
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class HttpUnauthorizedError(HttpError):
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"""HTTP 401 Unauthorized."""
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class HttpForbiddenError(HttpError):
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"""HTTP 403 Forbidden."""
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class HttpNotFoundError(HttpError):
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"""HTTP 404 Not Found."""
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class HttpConflictError(HttpError):
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"""HTTP 409 Conflict."""
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_HTTP_ERRORS = {
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400: HttpBadRequestError,
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401: HttpUnauthorizedError,
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403: HttpForbiddenError,
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404: HttpNotFoundError,
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409: HttpConflictError,
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}
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class InvalidUserInputError(InvalidDataError):
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"""User-provided input is invalid."""
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class InvalidDataFromServerError(InvalidDataError, CommunicationError):
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"""Data received from the server is malformed."""
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class BatchError(Error):
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"""Error generated while constructing a batch request."""
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class ConfigurationError(Error):
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"""Base class for configuration errors."""
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class GeneratedClientError(Error):
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"""The generated client configuration is invalid."""
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class ConfigurationValueError(UserError):
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"""Some part of the user-specified client configuration is invalid."""
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class ResourceUnavailableError(Error):
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"""User requested an unavailable resource."""
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class CredentialsError(Error):
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"""Errors related to invalid credentials."""
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class TransferError(CommunicationError):
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"""Errors related to transfers."""
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class TransferRetryError(TransferError):
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"""Retryable errors related to transfers."""
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class TransferInvalidError(TransferError):
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"""The given transfer is invalid."""
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class RequestError(CommunicationError):
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"""The request was not successful."""
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class RetryAfterError(HttpError):
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"""The response contained a retry-after header."""
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def __init__(self, response, content, url, retry_after, **kwargs):
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super(RetryAfterError, self).__init__(response, content, url, **kwargs)
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self.retry_after = int(retry_after)
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@classmethod
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def FromResponse(cls, http_response, **kwargs):
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return cls(http_response.info, http_response.content,
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http_response.request_url, http_response.retry_after,
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**kwargs)
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class BadStatusCodeError(HttpError):
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"""The request completed but returned a bad status code."""
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class NotYetImplementedError(GeneratedClientError):
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"""This functionality is not yet implemented."""
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class StreamExhausted(Error):
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"""Attempted to read more bytes from a stream than were available."""
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