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Remove redundant database locks for device list updates

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We can rely on the application-level per-user linearizer.
This commit is contained in:
Richard van der Hoff 2018-11-01 19:01:29 +00:00
parent c68aab1536
commit 50e328d1e7
1 changed files with 40 additions and 5 deletions
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45
synapse/storage/devices.py
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@ -239,7 +239,19 @@ class DeviceStore(SQLBaseStore):
def update_remote_device_list_cache_entry(self, user_id, device_id, content,
stream_id):
"""Updates a single user's device in the cache.
"""Updates a single device in the cache of a remote user's devicelist.
Note: assumes that we are the only thread that can be updating this user's
device list.
Args:
user_id (str): User to update device list for
device_id (str): ID of decivice being updated
content (dict): new data on this device
stream_id (int): the version of the device list
Returns:
Deferred[None]
"""
return self.runInteraction(
"update_remote_device_list_cache_entry",
@ -272,7 +284,11 @@ class DeviceStore(SQLBaseStore):
},
values={
"content": json.dumps(content),
}
},
# we don't need to lock, because we assume we are the only thread
# updating this user's devices.
lock=False,
)
txn.call_after(self._get_cached_user_device.invalidate, (user_id, device_id,))
@ -289,11 +305,26 @@ class DeviceStore(SQLBaseStore):
},
values={
"stream_id": stream_id,
}
},
# again, we can assume we are the only thread updating this user's
# extremity.
lock=False,
)
def update_remote_device_list_cache(self, user_id, devices, stream_id):
"""Replace the cache of the remote user's devices.
"""Replace the entire cache of the remote user's devices.
Note: assumes that we are the only thread that can be updating this user's
device list.
Args:
user_id (str): User to update device list for
devices (list[dict]): list of device objects supplied over federation
stream_id (int): the version of the device list
Returns:
Deferred[None]
"""
return self.runInteraction(
"update_remote_device_list_cache",
@ -338,7 +369,11 @@ class DeviceStore(SQLBaseStore):
},
values={
"stream_id": stream_id,
}
},
# we don't need to lock, because we can assume we are the only thread
# updating this user's extremity.
lock=False,
)
def get_devices_by_remote(self, destination, from_stream_id):