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Merge pull request #3530 from matrix-org/erikj/stream_cache

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Don't return unknown entities in get_entities_changed
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Amber Brown 2018-07-17 13:44:46 +10:00 committed by GitHub
commit 3fe0938b76
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3 changed files with 4 additions and 11 deletions
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0
changelog.d/3530.misc Normal file
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9
synapse/util/caches/stream_change_cache.py
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@ -74,19 +74,12 @@ class StreamChangeCache(object):
assert type(stream_pos) is int
if stream_pos >= self._earliest_known_stream_pos:
changed_entities = {
result = {
self._cache[k] for k in self._cache.islice(
start=self._cache.bisect_right(stream_pos),
)
}
# we need to include entities which we don't know about, as well as
# those which are known to have changed since the stream pos.
result = {
e for e in entities
if e in changed_entities or e not in self._entity_to_key
}
self.metrics.inc_hits()
else:
result = set(entities)

6
tests/util/test_stream_change_cache.py
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@ -141,8 +141,8 @@ class StreamChangeCacheTests(unittest.TestCase):
)
# Query all the entries mid-way through the stream, but include one
# that doesn't exist in it. We should get back the one that doesn't
# exist, too.
# that doesn't exist in it. We shouldn't get back the one that doesn't
# exist.
self.assertEqual(
cache.get_entities_changed(
[
@ -153,7 +153,7 @@ class StreamChangeCacheTests(unittest.TestCase):
],
stream_pos=2,
),
set(["bar@baz.net", "user@elsewhere.org", "not@here.website"]),
set(["bar@baz.net", "user@elsewhere.org"]),
)
# Query all the entries, but before the first known point. We will get