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Merge pull request #226 from matrix-org/erikj/room_presence

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Add and use cached batched storage.get_state function.
This commit is contained in:
Erik Johnston 2015-08-18 10:43:50 +01:00
commit dc2a105fca
3 changed files with 122 additions and 15 deletions
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12
synapse/handlers/message.py
View File

@ -460,20 +460,14 @@ class MessageHandler(BaseHandler):
@defer.inlineCallbacks
def get_presence():
presence_defs = yield defer.DeferredList(
[
presence_handler.get_state(
target_user=UserID.from_string(m.user_id),
states = yield presence_handler.get_states(
target_users=[UserID.from_string(m.user_id) for m in room_members],
auth_user=auth_user,
as_event=True,
check_auth=False,
)
for m in room_members
],
consumeErrors=True,
)
defer.returnValue([p for success, p in presence_defs if success])
defer.returnValue(states.values())
receipts_handler = self.hs.get_handlers().receipts_handler

87
synapse/handlers/presence.py
View File

@ -192,6 +192,20 @@ class PresenceHandler(BaseHandler):
@defer.inlineCallbacks
def get_state(self, target_user, auth_user, as_event=False, check_auth=True):
"""Get the current presence state of the given user.
Args:
target_user (UserID): The user whose presence we want
auth_user (UserID): The user requesting the presence, used for
checking if said user is allowed to see the persence of the
`target_user`
as_event (bool): Format the return as an event or not?
check_auth (bool): Perform the auth checks or not?
Returns:
dict: The presence state of the `target_user`, whose format depends
on the `as_event` argument.
"""
if self.hs.is_mine(target_user):
if check_auth:
visible = yield self.is_presence_visible(
@ -232,6 +246,79 @@ class PresenceHandler(BaseHandler):
else:
defer.returnValue(state)
@defer.inlineCallbacks
def get_states(self, target_users, auth_user, as_event=False, check_auth=True):
"""A batched version of the `get_state` method that accepts a list of
`target_users`
Args:
target_users (list): The list of UserID's whose presence we want
auth_user (UserID): The user requesting the presence, used for
checking if said user is allowed to see the persence of the
`target_users`
as_event (bool): Format the return as an event or not?
check_auth (bool): Perform the auth checks or not?
Returns:
dict: A mapping from user -> presence_state
"""
local_users, remote_users = partitionbool(
target_users,
lambda u: self.hs.is_mine(u)
)
if check_auth:
for user in local_users:
visible = yield self.is_presence_visible(
observer_user=auth_user,
observed_user=user
)
if not visible:
raise SynapseError(404, "Presence information not visible")
results = {}
if local_users:
for user in local_users:
if user in self._user_cachemap:
results[user] = self._user_cachemap[user].get_state()
local_to_user = {u.localpart: u for u in local_users}
states = yield self.store.get_presence_states(
[u.localpart for u in local_users if u not in results]
)
for local_part, state in states.items():
res = {"presence": state["state"]}
if "status_msg" in state and state["status_msg"]:
res["status_msg"] = state["status_msg"]
results[local_to_user[local_part]] = res
for user in remote_users:
# TODO(paul): Have remote server send us permissions set
results[user] = self._get_or_offline_usercache(user).get_state()
for state in results.values():
if "last_active" in state:
state["last_active_ago"] = int(
self.clock.time_msec() - state.pop("last_active")
)
if as_event:
for user, state in results.items():
content = state
content["user_id"] = user.to_string()
if "last_active" in content:
content["last_active_ago"] = int(
self._clock.time_msec() - content.pop("last_active")
)
results[user] = {"type": "m.presence", "content": content}
defer.returnValue(results)
@defer.inlineCallbacks
@log_function
def set_state(self, target_user, auth_user, state):

32
synapse/storage/presence.py
View File

@ -14,19 +14,22 @@
# limitations under the License.
from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cached
from synapse.util.caches.descriptors import cached, cachedList
from twisted.internet import defer
class PresenceStore(SQLBaseStore):
def create_presence(self, user_localpart):
return self._simple_insert(
res = self._simple_insert(
table="presence",
values={"user_id": user_localpart},
desc="create_presence",
)
self.get_presence_state.invalidate((user_localpart,))
return res
def has_presence_state(self, user_localpart):
return self._simple_select_one(
table="presence",
@ -36,6 +39,7 @@ class PresenceStore(SQLBaseStore):
desc="has_presence_state",
)
@cached()
def get_presence_state(self, user_localpart):
return self._simple_select_one(
table="presence",
@ -44,8 +48,27 @@ class PresenceStore(SQLBaseStore):
desc="get_presence_state",
)
@cachedList(get_presence_state.cache, list_name="user_localparts")
def get_presence_states(self, user_localparts):
def f(txn):
results = {}
for user_localpart in user_localparts:
res = self._simple_select_one_txn(
txn,
table="presence",
keyvalues={"user_id": user_localpart},
retcols=["state", "status_msg", "mtime"],
allow_none=True,
)
if res:
results[user_localpart] = res
return results
return self.runInteraction("get_presence_states", f)
def set_presence_state(self, user_localpart, new_state):
return self._simple_update_one(
res = self._simple_update_one(
table="presence",
keyvalues={"user_id": user_localpart},
updatevalues={"state": new_state["state"],
@ -54,6 +77,9 @@ class PresenceStore(SQLBaseStore):
desc="set_presence_state",
)
self.get_presence_state.invalidate((user_localpart,))
return res
def allow_presence_visible(self, observed_localpart, observer_userid):
return self._simple_insert(
table="presence_allow_inbound",