From 0f007fe009dde43a3a85aacee12cd51cd603bd1c Mon Sep 17 00:00:00 2001 From: Hillery Shay Date: Tue, 28 Sep 2021 09:13:23 -0700 Subject: [PATCH] Update utility code to handle C implementations of frozendict (#10902) * update _handle_frozendict to work with c implementations of frozen dict * add changelog * add clarifying comment to _handle_frozendict --- changelog.d/10902.misc | 1 + synapse/util/__init__.py | 8 +++++++- 2 files changed, 8 insertions(+), 1 deletion(-) create mode 100644 changelog.d/10902.misc diff --git a/changelog.d/10902.misc b/changelog.d/10902.misc new file mode 100644 index 000000000..2cd79887f --- /dev/null +++ b/changelog.d/10902.misc @@ -0,0 +1 @@ +Update utility code to handle C implementations of frozendict. \ No newline at end of file diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py index bd234549b..64daff59d 100644 --- a/synapse/util/__init__.py +++ b/synapse/util/__init__.py @@ -50,7 +50,13 @@ def _handle_frozendict(obj: Any) -> Dict[Any, Any]: if type(obj) is frozendict: # fishing the protected dict out of the object is a bit nasty, # but we don't really want the overhead of copying the dict. - return obj._dict + try: + return obj._dict + except AttributeError: + # When the C implementation of frozendict is used, + # there isn't a `_dict` attribute with a dict + # so we resort to making a copy of the frozendict + return dict(obj) raise TypeError( "Object of type %s is not JSON serializable" % obj.__class__.__name__ )