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# Copyright (c) 2006,2007 Mitch Garnaat http://garnaat.org/
#
# 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
"""
from boto import handler
from boto.resultset import ResultSet
import xml.sax
class BotoClientError(StandardError):
"""
General Boto Client error (error accessing AWS)
"""
def __init__(self, reason):
self.reason = reason
def __repr__(self):
return 'S3Error: %s' % self.reason
def __str__(self):
return 'S3Error: %s' % self.reason
class SDBPersistenceError(StandardError):
pass
class S3PermissionsError(BotoClientError):
"""
Permissions error when accessing a bucket or key on S3.
"""
pass
class BotoServerError(StandardError):
def __init__(self, status, reason, body=None):
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
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 S3CreateError(BotoServerError):
"""
Error creating a bucket or key on S3.
"""
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 S3CopyError(BotoServerError):
"""
Error copying a key on S3.
"""
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):
self.reason = reason
self.message = message
def __repr__(self):
return 'SQSDecodeError: %s' % self.reason
def __str__(self):
return 'SQSDecodeError: %s' % self.reason
class S3ResponseError(BotoServerError):
"""
Error in response from S3.
"""
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 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 _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 respones from SDB.
"""
pass
class AWSConnectionError(BotoClientError):
"""
General error connecting to Amazon Web Services.
"""
pass
class S3DataError(BotoClientError):
"""
Error receiving data from S3.
"""
pass
class FPSResponseError(BotoServerError):
pass
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