Permalink
Fetching contributors…
Cannot retrieve contributors at this time
132 lines (109 sloc) 4.03 KB
# -*- coding: utf-8 -*-
## Amazon S3 manager - Exceptions library
## Author: Michal Ludvig <michal@logix.cz>
## http://www.logix.cz/michal
## License: GPL Version 2
## Copyright: TGRMN Software and contributors
from Utils import getTreeFromXml, unicodise, deunicodise
from logging import debug, error
import ExitCodes
try:
from xml.etree.ElementTree import ParseError as XmlParseError
except ImportError:
# ParseError was only added in python2.7, before ET was raising ExpatError
from xml.parsers.expat import ExpatError as XmlParseError
class S3Exception(Exception):
def __init__(self, message = ""):
self.message = unicodise(message)
def __str__(self):
## Call unicode(self) instead of self.message because
## __unicode__() method could be overridden in subclasses!
return deunicodise(unicode(self))
def __unicode__(self):
return self.message
## (Base)Exception.message has been deprecated in Python 2.6
def _get_message(self):
return self._message
def _set_message(self, message):
self._message = message
message = property(_get_message, _set_message)
class S3Error (S3Exception):
def __init__(self, response):
self.status = response["status"]
self.reason = response["reason"]
self.info = {
"Code" : "",
"Message" : "",
"Resource" : ""
}
debug("S3Error: %s (%s)" % (self.status, self.reason))
if response.has_key("headers"):
for header in response["headers"]:
debug("HttpHeader: %s: %s" % (header, response["headers"][header]))
if response.has_key("data") and response["data"]:
try:
tree = getTreeFromXml(response["data"])
except XmlParseError:
debug("Not an XML response")
else:
try:
self.info.update(self.parse_error_xml(tree))
except Exception, e:
error("Error parsing xml: %s. ErrorXML: %s" % (e, response["data"]))
self.code = self.info["Code"]
self.message = self.info["Message"]
self.resource = self.info["Resource"]
def __unicode__(self):
retval = u"%d " % (self.status)
retval += (u"(%s)" % (self.info.has_key("Code") and self.info["Code"] or self.reason))
if self.info.has_key("Message"):
retval += (u": %s" % self.info["Message"])
return retval
def get_error_code(self):
if self.status in [301, 307]:
return ExitCodes.EX_SERVERMOVED
elif self.status in [400, 405, 411, 416, 501, 504]:
return ExitCodes.EX_SERVERERROR
elif self.status == 403:
return ExitCodes.EX_ACCESSDENIED
elif self.status == 404:
return ExitCodes.EX_NOTFOUND
elif self.status == 409:
return ExitCodes.EX_CONFLICT
elif self.status == 412:
return ExitCodes.EX_PRECONDITION
elif self.status == 500:
return ExitCodes.EX_SOFTWARE
elif self.status == 503:
return ExitCodes.EX_SERVICE
else:
return ExitCodes.EX_SOFTWARE
@staticmethod
def parse_error_xml(tree):
info = {}
error_node = tree
if not error_node.tag == "Error":
error_node = tree.find(".//Error")
if error_node is not None:
for child in error_node.getchildren():
if child.text != "":
debug("ErrorXML: " + child.tag + ": " + repr(child.text))
info[child.tag] = child.text
else:
raise S3ResponseError("Malformed error XML returned from remote server.")
return info
class CloudFrontError(S3Error):
pass
class S3UploadError(S3Exception):
pass
class S3DownloadError(S3Exception):
pass
class S3RequestError(S3Exception):
pass
class S3ResponseError(S3Exception):
pass
class InvalidFileError(S3Exception):
pass
class ParameterError(S3Exception):
pass
# vim:et:ts=4:sts=4:ai