SonataFlow Operator should emit deploy and undeploy events when Data Index is available in a given namespace

[ricardozanini]

Description

Data Index supports events for marking a workflow as deployed and undeployed. Since the operator controls this behavior cluster-wide, it makes sense for it to push events directly to DI once such events occur.

The event will be pushed to the Data Index in the SonataFlowPlatform definition. That can be either cluster-wide or namespace.

For reference, this is the ProcessEventDefinition.

Implementation ideas

Every time a new workflow is deployed a new Deploy event will be emitted. We will add a finalizer to handle Undeploy events to a given Data Index.

[ricardozanini]

@nmirasch @wmedvede @fjtirado do we have the issues to Data Index to enable listening to these events?

[fjtirado]

@ricardozanini We need following issues for this epic:

• Operator to emit deploy and undeploy event following existing ProcessEventDefinition (I guess this can be one issue)
• Runtime to remove current event publishing when the operator is there (we need to dicuss what happend when data index is embedded and there is not operator)
• Data index to consume undeploy event (the current code for deploy event does not need to be touched)