From 30003279e35e5931fc85d7e6211ea4de6f9554d7 Mon Sep 17 00:00:00 2001
From: Michael Schmoock <michael@schmoock.net>
Date: Fri, 10 Feb 2023 15:24:44 +0100
Subject: [PATCH] summary: check and dismiss old datastores

---
 summary/summary.py | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/summary/summary.py b/summary/summary.py
index a1429f2..4fa5d10 100755
--- a/summary/summary.py
+++ b/summary/summary.py
@@ -246,12 +246,25 @@ def summary(plugin, exclude='', sortkey=None):
     return reply
 
 
+def new_datastore():
+    return {'p': {}, 'r': 0, 'v': 1}  # see summary_avail.py for structure
+
+
+def check_datastore(obj):
+    if 'v' in obj and type(obj['v']) is int and obj['v'] == 1:
+        return True
+    return False
+
+
 def load_datastore(plugin):
     entries = plugin.rpc.listdatastore(key=datastore_key)['datastore']
     if len(entries) == 0:
         plugin.log(f"Creating a new datastore '{datastore_key}'", 'debug')
-        return {'p': {}, 'r': 0, 'v': 1}  # see summary_avail.py for structure
+        return new_datastore()
     persist = pickle.loads(bytearray.fromhex(entries[0]["hex"]))
+    if not check_datastore(persist):
+        plugin.log(f"Dismissing old datastore '{datastore_key}'", 'debug')
+        return new_datastore()
     plugin.log(f"Reopened datastore '{datastore_key}' with {persist['r']} "
                f"runs and {len(persist['p'])} entries", 'debug')
     return persist