1 files changed, 13 insertions, 1 deletions
diff --git a/synapse/util/__init__.py b/synapse/util/__init__.py
index a90f08dd4c..7be9d5f113 100644
--- a/synapse/util/__init__.py
+++ b/synapse/util/__init__.py
@@ -15,7 +15,7 @@
import json
import logging
import typing
-from typing import Any, Callable, Dict, Generator, Optional
+from typing import Any, Callable, Dict, Generator, Optional, Sequence
import attr
from frozendict import frozendict
@@ -193,3 +193,15 @@ def log_failure(
# Version string with git info. Computed here once so that we don't invoke git multiple
# times.
SYNAPSE_VERSION = get_distribution_version_string("matrix-synapse", __file__)
+
+
+class ExceptionBundle(Exception):
+ # A poor stand-in for something like Python 3.11's ExceptionGroup.
+ # (A backport called `exceptiongroup` exists but seems overkill: we just want a
+ # container type here.)
+ def __init__(self, message: str, exceptions: Sequence[Exception]):
+ parts = [message]
+ for e in exceptions:
+ parts.append(str(e))
+ super().__init__("\n - ".join(parts))
+ self.exceptions = exceptions
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