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"""Error classes and wrappers for VarlinkError."""
from varlink import VarlinkError
class VarlinkErrorProxy(VarlinkError):
"""Class to Proxy VarlinkError methods."""
def __init__(self, message, namespaced=False):
"""Construct proxy from Exception."""
super().__init__(message.as_dict(), namespaced)
self._message = message
self.__module__ = 'libpod'
def __getattr__(self, method):
"""Return attribute from proxied Exception."""
if hasattr(self._message, method):
return getattr(self._message, method)
try:
return self._message.parameters()[method]
except KeyError:
raise AttributeError('No such attribute: {}'.format(method))
class ContainerNotFound(VarlinkErrorProxy):
"""Raised when Client can not find requested container."""
pass
class ImageNotFound(VarlinkErrorProxy):
"""Raised when Client can not find requested image."""
pass
class ErrorOccurred(VarlinkErrorProxy):
"""Raised when an error occurs during the execution.
See error() to see actual error text.
"""
pass
class RuntimeError(VarlinkErrorProxy):
"""Raised when Client fails to connect to runtime."""
pass
error_map = {
'io.projectatomic.podman.ContainerNotFound': ContainerNotFound,
'io.projectatomic.podman.ErrorOccurred': ErrorOccurred,
'io.projectatomic.podman.ImageNotFound': ImageNotFound,
'io.projectatomic.podman.RuntimeError': RuntimeError,
}
def error_factory(exception):
"""Map Exceptions to a discrete type."""
try:
return error_map[exception.error()](exception)
except KeyError:
return exception
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