validate_node_ids

class ValidateNodeIDs(plugin.MayaInstancePlugin):
    """Validate nodes have a Colorbleed Id.

    When IDs are missing from nodes *save your scene* and they should be
    automatically generated because IDs are created on non-referenced nodes
    in Maya upon scene save.

    """

    order = ValidatePipelineOrder
    label = 'Instance Nodes Have ID'
    families = ["model",
                "look",
                "rig",
                "pointcache",
                "animation",
                "yetiRig",
                "assembly"]

    actions = [ayon_maya.api.action.SelectInvalidAction,
               ayon_maya.api.action.GenerateUUIDsOnInvalidAction]

    @classmethod
    def apply_settings(cls, project_settings):
        # Disable plug-in if cbId workflow is disabled
        if not project_settings["maya"].get("use_cbid_workflow", True):
            cls.enabled = False
            return

    def process(self, instance):
        """Process all meshes"""

        # Ensure all nodes have a cbId
        invalid = self.get_invalid(instance)
        if invalid:
            names = "\n".join(
                "- {}".format(node) for node in sorted(invalid)
            )
            raise PublishXmlValidationError(
                plugin=self,
                message="Nodes found without IDs:\n{}".format(names)
            )

    @classmethod
    def get_invalid(cls, instance):
        """Return the member nodes that are invalid"""

        # We do want to check the referenced nodes as it might be
        # part of the end product.
        id_nodes = lib.get_id_required_nodes(referenced_nodes=True,
                                             nodes=instance[:],
                                             # Exclude those with already
                                             # existing ids
                                             existing_ids=False)
        return list(id_nodes)