104 lines
3.0 KiB
Python
104 lines
3.0 KiB
Python
# Copyright 2006 Google LLC. All Rights Reserved.
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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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"""Errors used in the YAML API, which is used by app developers."""
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class Error(Exception):
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"""Base datastore yaml error type."""
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class ProtocolBufferParseError(Error):
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"""Error in protocol buffer parsing"""
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class EmptyConfigurationFile(Error):
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"""Tried to load empty configuration file."""
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class MultipleConfigurationFile(Error):
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"""Tried to load configuration file with multiple objects."""
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class AmbiguousConfigurationFiles(Error):
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"""Both YAML and XML files exist for the same configuration information."""
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class UnexpectedAttribute(Error):
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"""Raised when an unexpected attribute is encounted."""
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class DuplicateAttribute(Error):
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"""Generated when an attribute is assigned to twice."""
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class ListenerConfigurationError(Error):
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"""Generated when there is a parsing problem due to configuration."""
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class IllegalEvent(Error):
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"""Raised when an unexpected event type is received by listener."""
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class InternalError(Error):
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"""Raised when an internal implementation error is detected."""
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class EventListenerError(Error):
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"""Top level exception raised by YAML listener.
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Any exception raised within the process of parsing a YAML file via an
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EventListener is caught and wrapped in an EventListenerError. The causing
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exception is maintained, but additional useful information is saved which
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can be used for reporting useful information to users.
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Attributes:
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cause: The original exception which caused the EventListenerError.
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"""
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def __init__(self, cause):
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"""Initialize event-listener error."""
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if hasattr(cause, 'args') and cause.args:
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Error.__init__(self, *cause.args)
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else:
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# If exception has no args, create message by turning cause
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# in to a string.
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Error.__init__(self, str(cause))
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self.cause = cause
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def __str__(self):
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return str(self.cause)
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class EventListenerYAMLError(EventListenerError):
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"""Generated specifically for yaml.error.YAMLError."""
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class EventError(EventListenerError):
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"""Generated specifically when an error occurs in event handler.
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Attributes:
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cause: The original exception which caused the EventListenerError.
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event: Event being handled when exception occured.
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"""
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def __init__(self, cause, event):
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"""Initialize event-listener error."""
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EventListenerError.__init__(self, cause)
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self.event = event
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def __str__(self):
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return '%s\n%s' % (self.cause, self.event.start_mark)
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