From 074b9c67f8c0e10fc1ba42918e407f5b303c2ba7 Mon Sep 17 00:00:00 2001
From: Richard Bowman <richard.bowman@cantab.net>
Date: Thu, 11 Jan 2024 15:58:42 +0000
Subject: [PATCH] Serialise microscope ID to string

UUID objects don't serialise with `json.dumps` and thus cause
errors when we try to embed `thing_state` into images.
---
 src/openflexure_microscope_server/things/settings_manager.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/openflexure_microscope_server/things/settings_manager.py b/src/openflexure_microscope_server/things/settings_manager.py
index d69ece9d..bd05d08a 100644
--- a/src/openflexure_microscope_server/things/settings_manager.py
+++ b/src/openflexure_microscope_server/things/settings_manager.py
@@ -111,7 +111,7 @@ class SettingsManager(Thing):
     def thing_state(self) -> Mapping:
         state = {
             "hostname": gethostname(),
-            "microscope-uuid": self.microscope_id,
+            "microscope-uuid": str(self.microscope_id),
         }
         metadata = self.external_metadata
         for k in self.external_metadata_in_state: