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# Copyright (c) 2006-2010 Mitch Garnaat http://garnaat.org/
# Copyright (c) 2010, Eucalyptus Systems, Inc.
# All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
"""
Exception classes - Subclassing allows you to check for specific errors
"""
import base64
import xml.sax
from boto import handler
from boto.resultset import ResultSet
class BotoClientError(StandardError):
"""
General Boto Client error (error accessing AWS)
"""
def __init__(self, reason):
StandardError.__init__(self)
self.reason = reason
def __repr__(self):
return 'BotoClientError: %s' % self.reason
def __str__(self):
return 'BotoClientError: %s' % self.reason
class SDBPersistenceError(StandardError):
pass
class StoragePermissionsError(BotoClientError):
"""
Permissions error when accessing a bucket or key on a storage service.
"""
pass
class S3PermissionsError(StoragePermissionsError):
"""
Permissions error when accessing a bucket or key on S3.
"""
pass
class GSPermissionsError(StoragePermissionsError):
"""
Permissions error when accessing a bucket or key on GS.
"""
pass
class BotoServerError(StandardError):
def __init__(self, status, reason, body=None):
StandardError.__init__(self)
self.status = status
self.reason = reason
self.body = body or ''
self.request_id = None
self.error_code = None
self.error_message = None
self.box_usage = None
# Attempt to parse the error response. If body isn't present,
# then just ignore the error response.
if self.body:
try:
h = handler.XmlHandler(self, self)
xml.sax.parseString(self.body, h)
except xml.sax.SAXParseException, pe:
# Go ahead and clean up anything that may have
# managed to get into the error data so we
# don't get partial garbage.
print "Warning: failed to parse error message from AWS: %s" % pe
self._cleanupParsedProperties()
def __getattr__(self, name):
if name == 'message':
return self.error_message
if name == 'code':
return self.error_code
raise AttributeError
def __repr__(self):
return '%s: %s %s\n%s' % (self.__class__.__name__,
self.status, self.reason, self.body)
def __str__(self):
return '%s: %s %s\n%s' % (self.__class__.__name__,
self.status, self.reason, self.body)
def startElement(self, name, attrs, connection):
pass
def endElement(self, name, value, connection):
if name in ('RequestId', 'RequestID'):
self.request_id = value
elif name == 'Code':
self.error_code = value
elif name == 'Message':
self.error_message = value
elif name == 'BoxUsage':
self.box_usage = value
return None
def _cleanupParsedProperties(self):
self.request_id = None
self.error_code = None
self.error_message = None
self.box_usage = None
class ConsoleOutput:
def __init__(self, parent=None):
self.parent = parent
self.instance_id = None
self.timestamp = None
self.comment = None
self.output = None
def startElement(self, name, attrs, connection):
return None
def endElement(self, name, value, connection):
if name == 'instanceId':
self.instance_id = value
elif name == 'output':
self.output = base64.b64decode(value)
else:
setattr(self, name, value)
class StorageCreateError(BotoServerError):
"""
Error creating a bucket or key on a storage service.
"""
def __init__(self, status, reason, body=None):
self.bucket = None
BotoServerError.__init__(self, status, reason, body)
def endElement(self, name, value, connection):
if name == 'BucketName':
self.bucket = value
else:
return BotoServerError.endElement(self, name, value, connection)
class S3CreateError(StorageCreateError):
"""
Error creating a bucket or key on S3.
"""
pass
class GSCreateError(StorageCreateError):
"""
Error creating a bucket or key on GS.
"""
pass
class StorageCopyError(BotoServerError):
"""
Error copying a key on a storage service.
"""
pass
class S3CopyError(StorageCopyError):
"""
Error copying a key on S3.
"""
pass
class GSCopyError(StorageCopyError):
"""
Error copying a key on GS.
"""
pass
class SQSError(BotoServerError):
"""
General Error on Simple Queue Service.
"""
def __init__(self, status, reason, body=None):
self.detail = None
self.type = None
BotoServerError.__init__(self, status, reason, body)
def startElement(self, name, attrs, connection):
return BotoServerError.startElement(self, name, attrs, connection)
def endElement(self, name, value, connection):
if name == 'Detail':
self.detail = value
elif name == 'Type':
self.type = value
else:
return BotoServerError.endElement(self, name, value, connection)
def _cleanupParsedProperties(self):
BotoServerError._cleanupParsedProperties(self)
for p in ('detail', 'type'):
setattr(self, p, None)
class SQSDecodeError(BotoClientError):
"""
Error when decoding an SQS message.
"""
def __init__(self, reason, message):
BotoClientError.__init__(self, reason)
self.message = message
def __repr__(self):
return 'SQSDecodeError: %s' % self.reason
def __str__(self):
return 'SQSDecodeError: %s' % self.reason
class StorageResponseError(BotoServerError):
"""
Error in response from a storage service.
"""
def __init__(self, status, reason, body=None):
self.resource = None
BotoServerError.__init__(self, status, reason, body)
def startElement(self, name, attrs, connection):
return BotoServerError.startElement(self, name, attrs, connection)
def endElement(self, name, value, connection):
if name == 'Resource':
self.resource = value
else:
return BotoServerError.endElement(self, name, value, connection)
def _cleanupParsedProperties(self):
BotoServerError._cleanupParsedProperties(self)
for p in ('resource'):
setattr(self, p, None)
class S3ResponseError(StorageResponseError):
"""
Error in response from S3.
"""
pass
class GSResponseError(StorageResponseError):
"""
Error in response from GS.
"""
pass
class EC2ResponseError(BotoServerError):
"""
Error in response from EC2.
"""
def __init__(self, status, reason, body=None):
self.errors = None
self._errorResultSet = []
BotoServerError.__init__(self, status, reason, body)
self.errors = [ (e.error_code, e.error_message) \
for e in self._errorResultSet ]
if len(self.errors):
self.error_code, self.error_message = self.errors[0]
def startElement(self, name, attrs, connection):
if name == 'Errors':
self._errorResultSet = ResultSet([('Error', _EC2Error)])
return self._errorResultSet
else:
return None
def endElement(self, name, value, connection):
if name == 'RequestID':
self.request_id = value
else:
return None # don't call subclass here
def _cleanupParsedProperties(self):
BotoServerError._cleanupParsedProperties(self)
self._errorResultSet = []
for p in ('errors'):
setattr(self, p, None)
class EmrResponseError(BotoServerError):
"""
Error in response from EMR
"""
pass
class _EC2Error:
def __init__(self, connection=None):
self.connection = connection
self.error_code = None
self.error_message = None
def startElement(self, name, attrs, connection):
return None
def endElement(self, name, value, connection):
if name == 'Code':
self.error_code = value
elif name == 'Message':
self.error_message = value
else:
return None
class SDBResponseError(BotoServerError):
"""
Error in responses from SDB.
"""
pass
class AWSConnectionError(BotoClientError):
"""
General error connecting to Amazon Web Services.
"""
pass
class StorageDataError(BotoClientError):
"""
Error receiving data from a storage service.
"""
pass
class S3DataError(StorageDataError):
"""
Error receiving data from S3.
"""
pass
class GSDataError(StorageDataError):
"""
Error receiving data from GS.
"""
pass
class FPSResponseError(BotoServerError):
pass
class InvalidUriError(Exception):
"""Exception raised when URI is invalid."""
def __init__(self, message):
Exception.__init__(self)
self.message = message
class InvalidAclError(Exception):
"""Exception raised when ACL XML is invalid."""
def __init__(self, message):
Exception.__init__(self)
self.message = message
class NoAuthHandlerFound(Exception):
"""Is raised when no auth handlers were found ready to authenticate."""
pass
class TooManyAuthHandlerReadyToAuthenticate(Exception):
"""Is raised when there are more than one auth handler ready.
In normal situation there should only be one auth handler that is ready to
authenticate. In case where more than one auth handler is ready to
authenticate, we raise this exception, to prevent unpredictable behavior
when multiple auth handlers can handle a particular case and the one chosen
depends on the order they were checked.
"""
pass
# Enum class for resumable upload failure disposition.
class ResumableTransferDisposition(object):
# START_OVER means an attempt to resume an existing transfer failed,
# and a new resumable upload should be attempted (without delay).
START_OVER = 'START_OVER'
# WAIT_BEFORE_RETRY means the resumable transfer failed but that it can
# be retried after a time delay.
WAIT_BEFORE_RETRY = 'WAIT_BEFORE_RETRY'
# ABORT means the resumable transfer failed and that delaying/retrying
# within the current process will not help.
ABORT = 'ABORT'
class ResumableUploadException(Exception):
"""
Exception raised for various resumable upload problems.
self.disposition is of type ResumableTransferDisposition.
"""
def __init__(self, message, disposition):
Exception.__init__(self)
self.message = message
self.disposition = disposition
def __repr__(self):
return 'ResumableUploadException("%s", %s)' % (
self.message, self.disposition)
class ResumableDownloadException(Exception):
"""
Exception raised for various resumable download problems.
self.disposition is of type ResumableTransferDisposition.
"""
def __init__(self, message, disposition):
Exception.__init__(self)
self.message = message
self.disposition = disposition
def __repr__(self):
return 'ResumableDownloadException("%s", %s)' % (
self.message, self.disposition)
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