shep/shep/error.py

41 lines
837 B
Python

class StateExists(Exception):
"""Attempt to add state that already exists.
"""
pass
class StateInvalid(Exception):
"""Attempt to operate on or move to a state that does not exist.
"""
pass
class StateItemExists(Exception):
"""A content key attempted added that already exists.
"""
pass
class StateItemNotFound(Exception):
"""A content key attempted read that does not exist.
"""
pass
class StateCorruptionError(RuntimeError):
"""An irrecoverable discrepancy between persisted state and memory state has occurred.
"""
pass
class StateTransitionInvalid(Exception):
"""Raised if state transition verification fails
"""
pass
class StateLockedKey(Exception):
"""Attempt to write to a state key that is being written to by another client
"""
pass