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Use run_in_background in preference to preserve_fn

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While I was going through uses of preserve_fn for other PRs, I converted places
which only use the wrapped function once to use run_in_background, to avoid
creating the function object.
This commit is contained in:
Richard van der Hoff 2018-04-27 11:29:27 +01:00
parent 0ced8b5b47
commit 2a13af23bc
22 changed files with 97 additions and 71 deletions
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5
synapse/rest/media/v1/preview_url_resource.py
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@ -35,7 +35,7 @@ from ._base import FileInfo
from synapse.api.errors import (
SynapseError, Codes,
)
from synapse.util.logcontext import preserve_fn, make_deferred_yieldable
from synapse.util.logcontext import make_deferred_yieldable, run_in_background
from synapse.util.stringutils import random_string
from synapse.util.caches.expiringcache import ExpiringCache
from synapse.http.client import SpiderHttpClient
@ -144,7 +144,8 @@ class PreviewUrlResource(Resource):
observable = self._cache.get(url)
if not observable:
download = preserve_fn(self._do_preview)(
download = run_in_background(
self._do_preview,
url, requester.user, ts,
)
observable = ObservableDeferred(