Implemented extraction of renders

openpype/hosts/unreal/plugins/publish/extract_render.py

@@ -0,0 +1,46 @@
+from pathlib import Path
+import openpype.api
+from avalon import io
+import unreal
+
+
+class ExtractRender(openpype.api.Extractor):
+    """Extract render."""
+
+    label = "Extract Render"
+    hosts = ["unreal"]
+    families = ["render"]
+    optional = True
+
+    def process(self, instance):
+        # Define extract output file path
+        stagingdir = self.staging_dir(instance)
+
+        # Perform extraction
+        self.log.info("Performing extraction..")
+
+        # Get the render output directory
+        project_dir = unreal.Paths.project_dir()
+        render_dir = f"{project_dir}/Saved/MovieRenders/{instance.data['subset']}"
+
+        assert unreal.Paths.directory_exists(render_dir), \
+            "Render directory does not exist"
+
+        render_path = Path(render_dir)
+
+        frames = []
+
+        for x in render_path.iterdir():
+            if x.is_file() and x.suffix == '.png':
+                frames.append(str(x))
+
+        if "representations" not in instance.data:
+            instance.data["representations"] = []
+
+        render_representation = {
+            'name': 'png',
+            'ext': 'png',
+            'files': frames,
+            "stagingDir": stagingdir,
+        }
+        instance.data["representations"].append(render_representation)