Reimplemented serialising LST

openflexure_microscope/utilities.py

@@ -4,6 +4,7 @@ import operator
 import base64
 from uuid import UUID
 import numpy as np
+import logging
 from collections import abc
 from functools import reduce
 from contextlib import contextmanager
@@ -21,6 +22,27 @@ def serialise_array_b64(npy_arr):
     return b64_string, dtype, shape
 
 
+def ndarray_to_json(arr: np.ndarray):
+    b64_string, dtype, shape = serialise_array_b64(arr)
+    return {
+        "@type": "ndarray",
+        "dtype": dtype,
+        "shape": shape,
+        "base64": b64_string
+    }
+
+
+def json_to_ndarray(json_dict: dict):
+    if not json_dict.get("@type") != "ndarray":
+        logging.warning("No valid @type attribute found. Conversion may fail.")
+    for required_param in ("dtype", "shape", "base64"):
+        if not json_dict.get(required_param):
+            raise KeyError(f"Missing required key {required_param}")
+    
+    return deserialise_array_b64(json_dict.get("base64"), json_dict.get("dtype"), json_dict.get("shape"))
+
+
+
 @contextmanager
 def set_properties(obj, **kwargs):
     """A context manager to set, then reset, certain properties of an object.