text: # 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, *args):
          StandardError.__init__(self, reason, *args)
          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, *args):
          StandardError.__init__(self, status, reason, body, *args)
          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 (TypeError, xml.sax.SAXParseException), pe:
                  # Remove unparsable message body so we don't include garbage
                  # in exception. But first, save self.body in self.error_message
                  # because occasionally we get error messages from Eucalyptus
                  # that are just text strings that we want to preserve.
                  self.error_message = self.body
                  self.body = None
  
      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, message)
          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 DynamoDBResponseError(BotoServerError):
      """
      This exception expects the fully parsed and decoded JSON response
      body to be passed as the body parameter.
  
      :ivar status: The HTTP status code.
      :ivar reason: The HTTP reason message.
      :ivar body: The Python dict that represents the decoded JSON
          response body.
      :ivar error_message: The full description of the AWS error encountered.
      :ivar error_code: A short string that identifies the AWS error
          (e.g. ConditionalCheckFailedException)
      """
  
      def __init__(self, status, reason, body=None, *args):
          self.status = status
          self.reason = reason
          self.body = body
          if self.body:
              self.error_message = self.body.get('message', None)
              self.error_code = self.body.get('__type', None)
              if self.error_code:
                  self.error_code = self.error_code.split('#')[-1]
  
  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, message)
          self.message = message
  
  class InvalidAclError(Exception):
      """Exception raised when ACL XML is invalid."""
  
      def __init__(self, message):
          Exception.__init__(self, message)
          self.message = message
  
  class InvalidCorsError(Exception):
      """Exception raised when CORS XML is invalid."""
  
      def __init__(self, message):
          Exception.__init__(self, message)
          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 within the current process.
      WAIT_BEFORE_RETRY = 'WAIT_BEFORE_RETRY'
  
      # ABORT_CUR_PROCESS means the resumable transfer failed and that
      # delaying/retrying within the current process will not help. If
      # resumable transfer included a state tracker file the upload can be
      # retried again later, in another process (e.g., a later run of gsutil).
      ABORT_CUR_PROCESS = 'ABORT_CUR_PROCESS'
  
      # ABORT means the resumable transfer failed in a way that it does not
      # make sense to continue in the current process, and further that the 
      # current tracker ID should not be preserved (in a tracker file if one
      # was specified at resumable upload start time). If the user tries again
      # later (e.g., a separate run of gsutil) it will get a new resumable
      # upload ID.
      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, message, disposition)
          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, message, disposition)
          self.message = message
          self.disposition = disposition
  
      def __repr__(self):
          return 'ResumableDownloadException("%s", %s)' % (
              self.message, self.disposition)
  