implemented basic collector

pype/plugins/tvpaint/publish/collect_instances.py

@@ -0,0 +1,38 @@
+import json
+
+import pyblish.api
+import avalon.io
+from avalon.tvpaint import pipeline
+
+
+class CollectInstances(pyblish.api.ContextPlugin):
+    label = "Collect Instances"
+    order = pyblish.api.CollectorOrder
+    hosts = ["tvpaint"]
+
+    def process(self, context):
+        self.log.info("Collecting instance data from workfile")
+        instances_data = pipeline.list_instances()
+        self.log.debug("Collected ({}) instances: {}".format(
+            len(instances_data), instances_data
+        ))
+
+        # TODO add validations of existing instances
+        # - layer id exists
+        for instance_data in instances_data:
+            asset_name = instance_data["asset"]
+            subset_name = instance_data["subset"]
+            family = instance_data["family"]
+            name = instance_data.get("name", subset_name)
+            active = instance_data.get("active", True)
+
+            instance = context.create_instance(
+                name=name,
+                family=family,
+                families=[family],
+                subset=subset_name,
+                asset=asset_name,
+                active=active,
+                publish=active,
+            )
+            self.log.debug(instance)