Run a jar file before insert or before update

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1

hi guys,
i am need to run a jar file before insert or before update.
i want change documents before insert or update.
how do I do it?
thank you.

2

You can have a look at ingest feature may be?

Hard to say if it will work for you as I don't understand what you are exactly trying to solve.

3

i use msgpack for faster and smaller transfer. " http://msgpack.org/index.html "
documents sent in the form of hex by client,
and i need to unpack documents before insert or update.

4

Do you have any issue by using JSON?
Did you try CBOR?