Page History

...

• The implementation architecture explainsdescribes:
  • the components used,
  • embedding of components and
  • component communication.
• Clustering is explained withdescribed as:
  
  • JS7 - Agent Cluster
  • JS7 - Controller Cluster
  • JS7 - JOC Cockpit Cluster

...

• Workflow configurations are deployed from the JOC Cockpit to a Controller that forwards them to the connected Agents:
  • Agents execute instructions and jobs from a workflow.
  • Agents report back execution results and the job log output by returning events.
• Orders are managed by the JOC Cockpit and are submitted to Controllers that forward them to the connected Agents:
  • Agents start workflows based on the order's scheduled start time.
  • User interventions include canceling, suspending and resuming orders. Such operations are sent by JOC Cockpit to the Controller that forwards them to connected Agents.

...

• A Controller Cluster provides automated fail-over between Active and Standby Controller instances.
• Controllers hold a journal for restart capabilities that includes workflow configurations and order state events:
  • The JOC Cockpit History Service subscribes to such events to maintain the History and to forward events to the GUI.
  • Events are released from by a Controller and the journal shrinks once the History has been persistently stored in the database.
• Controllers and Agents store messages in their journal and pass them asynchronously. This mechanism recovers communication in case of longer outages lasting hours or days.

...