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Enso-Bot/venv/Lib/site-packages/south/exceptions.py

161 lines
5.2 KiB
Python

from __future__ import print_function
from traceback import format_exception, format_exc
class SouthError(RuntimeError):
pass
class SouthWarning(RuntimeWarning):
pass
class BrokenMigration(SouthError):
def __init__(self, migration, exc_info):
self.migration = migration
self.exc_info = exc_info
if self.exc_info:
self.traceback = ''.join(format_exception(*self.exc_info))
else:
try:
self.traceback = format_exc()
except AttributeError: # Python3 when there is no previous exception
self.traceback = None
def __str__(self):
return ("While loading migration '%(migration)s':\n"
'%(traceback)s' % self.__dict__)
class UnknownMigration(BrokenMigration):
def __str__(self):
if not hasattr(self, "traceback"):
self.traceback = ""
return ("Migration '%(migration)s' probably doesn't exist.\n"
'%(traceback)s' % self.__dict__)
class InvalidMigrationModule(SouthError):
def __init__(self, application, module):
self.application = application
self.module = module
def __str__(self):
return ('The migration module specified for %(application)s, %(module)r, is invalid; the parent module does not exist.' % self.__dict__)
class NoMigrations(SouthError):
def __init__(self, application):
self.application = application
def __str__(self):
return "Application '%(application)s' has no migrations." % self.__dict__
class MultiplePrefixMatches(SouthError):
def __init__(self, prefix, matches):
self.prefix = prefix
self.matches = matches
def __str__(self):
self.matches_list = "\n ".join([str(m) for m in self.matches])
return ("Prefix '%(prefix)s' matches more than one migration:\n"
" %(matches_list)s") % self.__dict__
class GhostMigrations(SouthError):
def __init__(self, ghosts):
self.ghosts = ghosts
def __str__(self):
self.ghosts_list = "\n ".join([str(m) for m in self.ghosts])
return ("\n\n ! These migrations are in the database but not on disk:\n"
" %(ghosts_list)s\n"
" ! I'm not trusting myself; either fix this yourself by fiddling\n"
" ! with the south_migrationhistory table, or pass --delete-ghost-migrations\n"
" ! to South to have it delete ALL of these records (this may not be good).") % self.__dict__
class CircularDependency(SouthError):
def __init__(self, trace):
self.trace = trace
def __str__(self):
trace = " -> ".join([str(s) for s in self.trace])
return ("Found circular dependency:\n"
" %s") % trace
class InconsistentMigrationHistory(SouthError):
def __init__(self, problems):
self.problems = problems
def __str__(self):
return ('Inconsistent migration history\n'
'The following options are available:\n'
' --merge: will just attempt the migration ignoring any potential dependency conflicts.')
class DependsOnHigherMigration(SouthError):
def __init__(self, migration, depends_on):
self.migration = migration
self.depends_on = depends_on
def __str__(self):
return "Lower migration '%(migration)s' depends on a higher migration '%(depends_on)s' in the same app." % self.__dict__
class DependsOnUnknownMigration(SouthError):
def __init__(self, migration, depends_on):
self.migration = migration
self.depends_on = depends_on
def __str__(self):
print("Migration '%(migration)s' depends on unknown migration '%(depends_on)s'." % self.__dict__)
class DependsOnUnmigratedApplication(SouthError):
def __init__(self, migration, application):
self.migration = migration
self.application = application
def __str__(self):
return "Migration '%(migration)s' depends on unmigrated application '%(application)s'." % self.__dict__
class FailedDryRun(SouthError):
def __init__(self, migration, exc_info):
self.migration = migration
self.name = migration.name()
self.exc_info = exc_info
self.traceback = ''.join(format_exception(*self.exc_info))
def __str__(self):
return (" ! Error found during dry run of '%(name)s'! Aborting.\n"
"%(traceback)s") % self.__dict__
class ORMBaseNotIncluded(SouthError):
"""Raised when a frozen model has something in _ormbases which isn't frozen."""
pass
class UnfreezeMeLater(Exception):
"""An exception, which tells the ORM unfreezer to postpone this model."""
pass
class ImpossibleORMUnfreeze(SouthError):
"""Raised if the ORM can't manage to unfreeze all the models in a linear fashion."""
pass
class ConstraintDropped(SouthWarning):
def __init__(self, constraint, table, column=None):
self.table = table
if column:
self.column = ".%s" % column
else:
self.column = ""
self.constraint = constraint
def __str__(self):
return "Constraint %(constraint)s was dropped from %(table)s%(column)s -- was this intended?" % self.__dict__