RonBarabash opened a new pull request #131: Add the ability to update event by 
item id
URL: https://github.com/apache/unomi/pull/131
 
 
   Hey,
   As we understand from the Unomi docs, events are an immutable list of 
objects the can only be appended too.
   As more and more event driven system are being based on tools such as Kafka, 
we want to have the ability to guard ourselves from receiving duplicate events 
as consumers usually operates in "at least once" semantics.
   We thought that having the ability to pass in the itemId as a parameter to 
the context servlet would help us in achieving that goal without breaking the 
current behaviour.
   We also want to add the ability to ignore duplicate events in some rules we 
define, hence we added the `raiseEventOnlyOnce` parameter to the rule creation.
   I know that this is modifying `Event`, which is a Unomi core entity.
   We were wondering if this is something u might want to consider adding to 
the core functionality.
   If not, is there a way for us to achieve such behaviour only by extending or 
creating a plugin for Unomi?
   Your help and thoughts would be kindly appreciated,
   Cheers,
   Ron
   
   

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