How to identify trigger is called from the node where row is created

Hi,

I have a cluster of three nodes A, B, C and I'm using postgres bdr for
replication.

I have some code to execute after a value change in the table, for this I
have added a trigger.

When I call POST REST API from any one of the nodes it will execute the
code, and on all other nodes the trigger will execute the code. The issue
is the trigger will execute the code on the same node as well where POST
call is happening.

Ex. POST REST API on node B. Directly execute a+b. save a and b in DB.
response

Trigger activates on all nodes. And it will execute a+b on all nodes. (but
I don't want to execute it again on node B)

Thanks,
Satish