Trigger States

A trigger state lets Idem define a dictionary of key-value (K-V) pairs. Keys are user-defined and values can be output of any other state or any other value a user wishes to define.

Behavior of a trigger state:

• Check the value in the old_state dictionary and compare with the current_state.

• If there’s a difference between old_state and new_state, result[changes] is populated with the difference.

A trigger state can be seen as a helper state. It can be used in conjunction with other states.

Example

always-changes-and-succeeds:
      test.succeed_with_changes:
        - name: foo

    always-changes-trigger:
        trigger.build:
            - triggers:
                 - last_run_id: {{ range(1, 51) | random }}
                 - comment: ${test:always-changes-and-succeeds:testing}

    watch_changes:
      test.nop:
        - onchanges:
          - trigger: always-changes-trigger

In the above example , always-changes-trigger is a trigger state with a dictionary of K-V pairs. watch_changes is watching for changes of always-changes-trigger. Iff there are changes in the trigger state , state watch_changes will execute.