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from __future__ import absolute_import
from __future__ import unicode_literals
VERSION_EXPLANATION = (
'You might be seeing this error because you\'re using the wrong Compose file version. '
'Either specify a supported version (e.g "2.2" or "3.3") and place '
'your service definitions under the `services` key, or omit the `version` key '
'and place your service definitions at the root of the file to use '
'version 1.\nFor more on the Compose file format versions, see '
'https://docs.docker.com/compose/compose-file/')
class ConfigurationError(Exception):
def __init__(self, msg):
self.msg = msg
def __str__(self):
return self.msg
class EnvFileNotFound(ConfigurationError):
pass
class DependencyError(ConfigurationError):
pass
class CircularReference(ConfigurationError):
def __init__(self, trail):
self.trail = trail
@property
def msg(self):
lines = [
"{} in {}".format(service_name, filename)
for (filename, service_name) in self.trail
]
return "Circular reference:\n {}".format("\n extends ".join(lines))
class ComposeFileNotFound(ConfigurationError):
def __init__(self, supported_filenames):
super(ComposeFileNotFound, self).__init__("""
Can't find a suitable configuration file in this directory or any
parent. Are you in the right directory?
Supported filenames: %s
""" % ", ".join(supported_filenames))
class DuplicateOverrideFileFound(ConfigurationError):
def __init__(self, override_filenames):
self.override_filenames = override_filenames
super(DuplicateOverrideFileFound, self).__init__(
"Multiple override files found: {}. You may only use a single "
"override file.".format(", ".join(override_filenames))
)
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