add export validator

openpype/hosts/houdini/plugins/publish/validate_fbx_export_node.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+"""Validator plugin for Export node in filmbox instance."""
+import pyblish.api
+from openpype.pipeline import PublishValidationError
+
+
+class ValidateNoExportPath(pyblish.api.InstancePlugin):
+    """Validate if Export node in filmboxfbx instance exists."""
+
+    order = pyblish.api.ValidatorOrder
+    families = ["filmboxfbx"]
+    label = "Validate Filmbox Export Node"
+
+    def process(self, instance):
+
+        invalid = self.get_invalid(instance)
+        if invalid:
+            raise PublishValidationError(
+                "Export node is incorrect",
+                title="Invalid Export Node"
+            )
+
+    @classmethod
+    def get_invalid(cls, instance):
+
+        import hou
+
+        fbx_rop = hou.node(instance.data.get("instance_node"))
+        export_node = fbx_rop.parm("startnode").evalAsNode()
+
+        if not export_node:
+            cls.log.error(
+                ("Empty Export ('Export' parameter) found in "
+                 "the filmbox instance - {}".format(fbx_rop.path()))
+            )
+            return [fbx_rop]
+
+        if not isinstance(export_node, hou.SopNode):
+            cls.log.error(
+                "Export node '{}' is not pointing to valid SOP"
+                " node".format(export_node.path())
+            )
+            return [export_node]