From 3de9c73b0b066e5e15978a15c2903d10e398ed0a Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Fri, 5 Nov 2021 14:11:05 -0400
Subject: [PATCH] preserve the type when renewing HashedLeaseInfo

does this mean immutable lease renewal is untested?  maybe
---
 src/allmydata/storage/lease.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/allmydata/storage/lease.py b/src/allmydata/storage/lease.py
index 9ddbc9c68..1a5416d6a 100644
--- a/src/allmydata/storage/lease.py
+++ b/src/allmydata/storage/lease.py
@@ -287,6 +287,13 @@ class HashedLeaseInfo(proxyForInterface(ILeaseInfo, "_lease_info")): # type: ign
     _lease_info = attr.ib()
     _hash = attr.ib()
 
+    def renew(self, new_expire_time):
+        # Preserve the HashedLeaseInfo wrapper around the renewed LeaseInfo.
+        return attr.assoc(
+            self,
+            _lease_info=super(HashedLeaseInfo, self).renew(new_expire_time),
+        )
+
     def is_renew_secret(self, candidate_secret):
         # type: (bytes) -> bool
         """