Houdini: Ability to properly duplicate ROP

openpype/hosts/houdini/api/plugin.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 """Houdini specific Avalon/Pyblish plugin definitions."""
 import sys
+from uuid import uuid4
 from abc import (
  ABCMeta
 )
@@ -118,15 +119,27 @@ def cache_subsets(shared_data):
  if shared_data.get("houdini_cached_subsets") is None:
  cache = dict()
  cache_legacy = dict()
+ instance_id_list = []
 
  for node in lsattr("id", "pyblish.avalon.instance"):
 
  creator_identifier_parm = node.parm("creator_identifier")
+ instance_id_parm = node.parm("instance_id")
  if creator_identifier_parm:
  # creator instance
  creator_id = creator_identifier_parm.eval()
+ instance_id = instance_id_parm.eval()
+ # Regenerating instance in case of identical values between nodes
+ if instance_id in instance_id_list or node.path() != node.parm("instance_node").eval():
+ new_data = {
+ "instance_node": node.path(),
+ "instance_id": str(uuid4()),
+ "subset": node.name()
+ }
+ # Refreshing node values
+ imprint(hou.node(node.path()), new_data, update=True)
  cache.setdefault(creator_id, []).append(node)
-
+ instance_id_list.append(instance_id)
  else:
  # legacy instance
  family_parm = node.parm("family")