Started work on storage backend

backend/storage.py

@@ -0,0 +1,28 @@
+# storage.py - storage backend for TeraHz
+# Copyright Kristjan Komloši 2019
+# This code is licensed under the 3-clause BSD license
+
+import file
+import json
+import pandas as pd
+
+class measurementStorage():
+    def __init__(self, directory):
+        self.storageDirectory = directory
+
+    def storeJSON(self, JSON):
+        # JSON sanity check, shouldn't be needed, but just in case...
+        if 'metadata' not in JSON or 'timestamp' not in JSON['metadata']:
+            raise Exception('Invalid JSON passed to storage backend: no timestamp')
+
+        if 'spectral' not in JSON or [x for x in 'ABCDEFGHIJKLMNOPQR'] not in JSON['spectral']:
+            raise Exception('Invalid JSON passed to storage backend: no spectral data')
+
+        if 'uv' not in JSON or ['a', 'b', 'i'] not in JSON['uv']:
+            raise Exception('Invalid JSON passed to storage backend: no UVA/B/I data')
+
+        if 'lux' not in JSON:
+            raise Exception('Invalid JSON passed to storage backend: no illuminance data')
+
+        filename = JSON['metadata']['timestamp'] + '.thz'
+        with file.open()