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Close the database connection we create during startup (#8131)

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... otherwise it gets leaked.
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Richard van der Hoff 2020-08-19 20:41:53 +01:00 committed by GitHub
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commit 12aebdfa5a
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2 changed files with 11 additions and 1 deletions
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changelog.d/8131.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug which could cause a leaked postgres connection if synapse was set to daemonize.

11
synapse/storage/databases/__init__.py
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@ -87,12 +87,21 @@ class Databases(object):
logger.info("Database %r prepared", db_name) logger.info("Database %r prepared", db_name)
# Closing the context manager doesn't close the connection.
# psycopg will close the connection when the object gets GCed, but *only*
# if the PID is the same as when the connection was opened [1], and
# it may not be if we fork in the meantime.
#
# [1]: https://github.com/psycopg/psycopg2/blob/2_8_5/psycopg/connection_type.c#L1378
db_conn.close()
# Sanity check that we have actually configured all the required stores. # Sanity check that we have actually configured all the required stores.
if not main: if not main:
raise Exception("No 'main' data store configured") raise Exception("No 'main' data store configured")
if not state: if not state:
raise Exception("No 'main' data store configured") raise Exception("No 'state' data store configured")
# We use local variables here to ensure that the databases do not have # We use local variables here to ensure that the databases do not have
# optional types. # optional types.