+ def validate_lock
+ # If the Container is already locked by someone other than the
+ # current api_client_auth, disallow all changes -- except
+ # priority, which needs to change to reflect max(priority) of
+ # relevant ContainerRequests.
+ if locked_by_uuid_was
+ if locked_by_uuid_was != Thread.current[:api_client_authorization].uuid
+ check_update_whitelist [:priority]
+ end
+ end
+
+ if [Locked, Running].include? self.state
+ # If the Container was already locked, locked_by_uuid must not
+ # changes. Otherwise, the current auth gets the lock.
+ need_lock = locked_by_uuid_was || Thread.current[:api_client_authorization].uuid
+ else
+ need_lock = nil
+ end
+
+ # The caller can provide a new value for locked_by_uuid, but only
+ # if it's exactly what we expect. This allows a caller to perform
+ # an update like {"state":"Unlocked","locked_by_uuid":null}.
+ if self.locked_by_uuid_changed?
+ if self.locked_by_uuid != need_lock
+ return errors.add :locked_by_uuid, "can only change to #{need_lock}"
+ end
+ end
+ self.locked_by_uuid = need_lock
+ end
+
+ def assign_auth
+ if self.auth_uuid_changed?
+ return errors.add :auth_uuid, 'is readonly'
+ end
+ if not [Locked, Running].include? self.state
+ # don't need one
+ self.auth.andand.update_attributes(expires_at: db_current_time)
+ self.auth = nil
+ return
+ elsif self.auth
+ # already have one
+ return
+ end
+ cr = ContainerRequest.
+ where('container_uuid=? and priority>0', self.uuid).
+ order('priority desc').
+ first
+ if !cr
+ return errors.add :auth_uuid, "cannot be assigned because priority <= 0"
+ end
+ self.auth = ApiClientAuthorization.
+ create!(user_id: User.find_by_uuid(cr.modified_by_user_uuid).id,
+ api_client_id: 0)
+ end
+
+ def handle_completed