How to use Java api UpdateRequest for conditional write with optimistic locking control in place

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Hi,

My scenario is

  • upsert the whole document with optimistic locking control (seqno/ primary term)
  • I also want to do some conditional update meaning I want to update only when current doc's updatedAt is earlier than what I am providing. I also want to see if I can use external version for this purpose which might have a conflict with seqno/primary term conceptually?

Initially what I was thinking is that

  • using UpdateRequest ( but not using partial update)
  • using Script to apply conditional write
  • providing a whole doc to enable Upsert

Can we do these using UpdateRequest? or should I do this as a separated steps? checking updatedAt and then try to update?

Thank you.
(I am using es 7.17.0)

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