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import six
class LXDAPIException(Exception):
"""A generic exception for representing unexpected LXD API responses.
LXD API responses are clearly documented, and are either a standard
return value, and background operation, or an error. This exception
is raised on an error case, or when the response status code is
not expected for the response.
This exception should *only* be raised in cases where the LXD REST
API has returned something unexpected.
"""
def __init__(self, response):
super(LXDAPIException, self).__init__()
self.response = response
def __str__(self):
if self.response.status_code == 200: # Operation failure
try:
return self.response.json()['metadata']['err']
except (ValueError, KeyError):
pass
try:
data = self.response.json()
return data['error']
except (ValueError, KeyError):
pass
return self.response.content.decode('utf-8')
class NotFound(LXDAPIException):
"""An exception raised when an object is not found."""
class LXDAPIExtensionNotAvailable(Exception):
"""An exception raised when requested LXD API Extension is not present
on current host."""
def __init__(self, name, *args, **kwargs):
"""Custom exception handling of the message is to convert the name into
a friendly error string.
:param name: the api_extension that was needed.
:type name: str
"""
super(LXDAPIExtensionNotAvailable, self).__init__(
"LXD API extension '{}' is not available".format(name),
*args, **kwargs)
class ClientConnectionFailed(Exception):
"""An exception raised when the Client connection fails."""
if six.PY2:
class NotADirectoryError(Exception):
""" An exception raised when not a directory for python2 """
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