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make use of _simple_select_one_onecol, improved comments
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@ -15,7 +15,7 @@
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from twisted.internet import defer
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from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
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from synapse.util.caches.descriptors import cached
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from ._base import SQLBaseStore
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@ -104,7 +104,7 @@ class MonthlyActiveUsersStore(SQLBaseStore):
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self._user_last_seen_monthly_active.invalidate((user_id,))
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self.get_monthly_active_count.invalidate(())
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@cachedInlineCallbacks(num_args=1)
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@cached(num_args=1)
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def _user_last_seen_monthly_active(self, user_id):
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"""
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Checks if a given user is part of the monthly active user group
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@ -114,18 +114,16 @@ class MonthlyActiveUsersStore(SQLBaseStore):
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int : timestamp since last seen, None if never seen
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"""
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result = yield self._simple_select_onecol(
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return(self._simple_select_one_onecol(
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table="monthly_active_users",
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keyvalues={
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"user_id": user_id,
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},
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retcol="timestamp",
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allow_none=True,
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desc="_user_last_seen_monthly_active",
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)
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timestamp = None
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if len(result) > 0:
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timestamp = result[0]
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defer.returnValue(timestamp)
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))
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@defer.inlineCallbacks
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def populate_monthly_active_users(self, user_id):
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@ -140,6 +138,11 @@ class MonthlyActiveUsersStore(SQLBaseStore):
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last_seen_timestamp = yield self._user_last_seen_monthly_active(user_id)
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now = self.hs.get_clock().time_msec()
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# We want to reduce to the total number of db writes, and are happy
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# to trade accuracy of timestamp in order to lighten load. This means
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# We always insert new users (where MAU threshold has not been reached),
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# but only update if we have not previously seen the user for
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# LAST_SEEN_GRANULARITY ms
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if last_seen_timestamp is None:
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count = yield self.get_monthly_active_count()
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if count < self.hs.config.max_mau_value:
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@ -16,6 +16,10 @@
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-- a table of monthly active users, for use where blocking based on mau limits
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CREATE TABLE monthly_active_users (
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user_id TEXT NOT NULL,
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-- Last time we saw the user. Not guaranteed to be accurate due to rate limiting
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-- on updates, Granularity of updates governed by
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-- syanpse.storage.monthly_active_users.LAST_SEEN_GRANULARITY
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-- Measured in ms since epoch.
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timestamp BIGINT NOT NULL
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);
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