state is a package to ease the state management of services running in MSA. States include the following:

• pending
  • This is the initial state.
  • Previous state does not exist.
  • Approved state is active.
  • Canceled state is canceled.
• modify_pending
  • This is a state when changing an existing entity(that is in active state) in a transaction.
  • Previous state is active.
  • Approved state is active.
  • Canceled state is active.
• remove_pending
  • This is a state when you try to remove an active entity.
  • Previous state is active.
  • Approved state is removed.
  • Canceled state is active.
• inactive_pending
  • This is a state when you try to inactivate an active entity.
  • Previous state is active.
  • Approved state is inactive.
  • Canceled state is active.
• active_pending
  • This is a state when you try to activate an inactive entity.
  • Previous state is inactive.
  • Approved state is active.
  • Canceled state is inactive.
• active
  • This is one of the final state when the transaction is successfully approved or canceled.
  • Previous states could be pending, modify_pending, remove_pending, inactive_pending or active_pending.
  • An error is returned when trying to approve or cancel an entity in this state.
• canceled
  • This is a state after a transaction has been canceled or rolled back.
  • Previous state is pending.
  • An error is returned when trying to approve or cancel an entity in this state.
• removed
  • This is a state indicating that an entity has been removed.
  • Previous state is remove_pending.
  • An error is returned when trying to approve or cancel an entity in this state.
• inactive
  • This is a state indicating that an entity has been inactivated.
  • Previous state is inactive_pending or active_pending.
  • An error is returned when trying to approve or cancel an entity in this state.