bare batch load functionality

al2/batch.py

@@ -0,0 +1,38 @@
+import json
+import pathlib as pl
+
+def load(batch_file):
+    batch_file = pl.Path(batch_file).resolve()
+
+    with open(batch_file, "r") as bfile:
+        batch_obj = json.loads(bfile.read())
+    
+    batch_obj["base_path"] = batch_file.parent
+
+    return __load_batch_obj(batch_obj)
+
+
+def __load_batch_obj(batch_obj):
+    paths = []
+
+    instance_dir = None
+
+    if "dir" in batch_obj:
+        instance_dir = pl.Path(batch_obj["dir"])
+
+        if not instance_dir.is_absolute():
+            instance_dir = pl.Path(batch_obj["base_path"], instance_dir)
+    else:
+        instance_dir = batch_obj["base_path"]
+
+    if "instances" in batch_obj:
+        for instance in batch_obj["instances"]:
+            paths.append(pl.Path(instance_dir, instance))
+
+    if "batches" in batch_obj:
+        for batch in batch_obj["batches"]:
+            batch["base_path"] = instance_dir
+
+            paths.extend(__load_batch_obj(batch))
+
+    return paths