Publish user defined attributes option.

openpype/hosts/maya/plugins/create/create_pointcache.py

@@ -33,6 +33,7 @@ class CreatePointCache(plugin.Creator):
         self.data["refresh"] = False       # Default to suspend refresh.
 
         # Add options for custom attributes
+        self.data["includeUserDefinedAttributes"] = True
         self.data["attr"] = ""
         self.data["attrPrefix"] = ""
 

openpype/hosts/maya/plugins/publish/collect_pointcache.py

@@ -42,3 +42,21 @@ class CollectPointcache(pyblish.api.InstancePlugin):
         if proxy_set:
             instance.remove(proxy_set)
             instance.data["setMembers"].remove(proxy_set)
+
+        # Collect user defined attributes.
+        if not instance.data.get("includeUserDefinedAttributes", False):
+            return
+
+        all_nodes = (
+            instance.data["setMembers"] + instance.data.get("proxy", [])
+        )
+        user_defined_attributes = set()
+        for node in all_nodes:
+            attrs = cmds.listAttr(node, userDefined=True) or list()
+            shapes = cmds.listRelatives(node, shapes=True) or list()
+            for shape in shapes:
+                attrs.extend(cmds.listAttr(shape, userDefined=True) or list())
+
+            user_defined_attributes.update(attrs)
+
+        instance.data["userDefinedAttributes"] = list(user_defined_attributes)

openpype/hosts/maya/plugins/publish/extract_pointcache.py

@@ -39,8 +39,7 @@ class ExtractAlembic(publish.Extractor):
         start = float(instance.data.get("frameStartHandle", 1))
         end = float(instance.data.get("frameEndHandle", 1))
 
-        attrs = instance.data.get("attr", "").split(";")
+        attrs = instance.data.get("userDefinedAttributes", [])
-        attrs = [value for value in attrs if value.strip()]
         attrs += ["cbId"]
 
         attr_prefixes = instance.data.get("attrPrefix", "").split(";")