Add Cycle Instruction to workflows

Current Situation

• Orders for workflows can use a single start time or cyclic start times, e.g. repeating every 5 minutes for a period of hours during the day.
• For each cycle an individual order is created. The GUI displays orders from a cycle as a single order. The order history keeps track of individual orders of a cycle.

Desired Behavior

• Cycles should be managed by the JS7 Controller and Agent for workflows.
  • This saves the overhead of creating individual orders for a cycle and to manage larger numbers of orders.
  • A single history entry is created for a cyclic workflow.
• The Cycle instruction in a workflow
  • can be used to span individual instructions/jobs and to span any number of instructions/jobs included with the workflow.
  • can be nested with other Cycle instructions and with other instructions.
  • performs cyclic execution of the workflow for a period of 24 hours starting from the point in time that the order was scheduled for.
  • specifies start times for cyclic execution
    • by a list of minutes for which the cycle executes during each hour. Applicable hours can be specified.
    • by the begin (hh:MM:ss) and duration of a period for which the cycle executes in a fixed interval.
• Error handling considers
  • to fail an order in case that any instruction in a cycle fails. The failed order remains with the offending instruction in a failed state and requires user intervention. No further cycles are considered for orders in a failed state.
  • to end the cycle immediately and to make the order move to the begin of the cycle and wait for the next start time (automated error handling).