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-rw-r--r--synapse/storage/__init__.py28
-rw-r--r--synapse/storage/client_ips.py23
-rw-r--r--synapse/storage/monthly_active_users.py124
-rw-r--r--synapse/storage/prepare_database.py2
-rw-r--r--synapse/storage/schema/delta/51/monthly_active_users.sql23
5 files changed, 172 insertions, 28 deletions
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index 134e4a80f1..23b4a8d76d 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -39,6 +39,7 @@ from .filtering import FilteringStore
 from .group_server import GroupServerStore
 from .keys import KeyStore
 from .media_repository import MediaRepositoryStore
+from .monthly_active_users import MonthlyActiveUsersStore
 from .openid import OpenIdStore
 from .presence import PresenceStore, UserPresenceState
 from .profile import ProfileStore
@@ -87,6 +88,7 @@ class DataStore(RoomMemberStore, RoomStore,
                 UserDirectoryStore,
                 GroupServerStore,
                 UserErasureStore,
+                MonthlyActiveUsersStore,
                 ):
 
     def __init__(self, db_conn, hs):
@@ -94,7 +96,6 @@ class DataStore(RoomMemberStore, RoomStore,
         self._clock = hs.get_clock()
         self.database_engine = hs.database_engine
 
-        self.db_conn = db_conn
         self._stream_id_gen = StreamIdGenerator(
             db_conn, "events", "stream_ordering",
             extra_tables=[("local_invites", "stream_id")]
@@ -267,31 +268,6 @@ class DataStore(RoomMemberStore, RoomStore,
 
         return self.runInteraction("count_users", _count_users)
 
-    def count_monthly_users(self):
-        """Counts the number of users who used this homeserver in the last 30 days
-
-        This method should be refactored with count_daily_users - the only
-        reason not to is waiting on definition of mau
-
-        Returns:
-            Defered[int]
-        """
-        def _count_monthly_users(txn):
-            thirty_days_ago = int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30)
-            sql = """
-                SELECT COALESCE(count(*), 0) FROM (
-                    SELECT user_id FROM user_ips
-                    WHERE last_seen > ?
-                    GROUP BY user_id
-                ) u
-            """
-
-            txn.execute(sql, (thirty_days_ago,))
-            count, = txn.fetchone()
-            return count
-
-        return self.runInteraction("count_monthly_users", _count_monthly_users)
-
     def count_r30_users(self):
         """
         Counts the number of 30 day retained users, defined as:-
diff --git a/synapse/storage/client_ips.py b/synapse/storage/client_ips.py
index b8cefd43d6..83d64d1563 100644
--- a/synapse/storage/client_ips.py
+++ b/synapse/storage/client_ips.py
@@ -35,6 +35,7 @@ LAST_SEEN_GRANULARITY = 120 * 1000
 
 class ClientIpStore(background_updates.BackgroundUpdateStore):
     def __init__(self, db_conn, hs):
+
         self.client_ip_last_seen = Cache(
             name="client_ip_last_seen",
             keylen=4,
@@ -74,6 +75,7 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
             "before", "shutdown", self._update_client_ips_batch
         )
 
+    @defer.inlineCallbacks
     def insert_client_ip(self, user_id, access_token, ip, user_agent, device_id,
                          now=None):
         if not now:
@@ -84,7 +86,7 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
             last_seen = self.client_ip_last_seen.get(key)
         except KeyError:
             last_seen = None
-
+        yield self._populate_monthly_active_users(user_id)
         # Rate-limited inserts
         if last_seen is not None and (now - last_seen) < LAST_SEEN_GRANULARITY:
             return
@@ -93,6 +95,25 @@ class ClientIpStore(background_updates.BackgroundUpdateStore):
 
         self._batch_row_update[key] = (user_agent, device_id, now)
 
+    @defer.inlineCallbacks
+    def _populate_monthly_active_users(self, user_id):
+        """Checks on the state of monthly active user limits and optionally
+        add the user to the monthly active tables
+
+        Args:
+            user_id(str): the user_id to query
+        """
+
+        store = self.hs.get_datastore()
+        if self.hs.config.limit_usage_by_mau:
+            is_user_monthly_active = yield store.is_user_monthly_active(user_id)
+            if is_user_monthly_active:
+                yield store.upsert_monthly_active_user(user_id)
+            else:
+                count = yield store.get_monthly_active_count()
+                if count < self.hs.config.max_mau_value:
+                    yield store.upsert_monthly_active_user(user_id)
+
     def _update_client_ips_batch(self):
         def update():
             to_update = self._batch_row_update
diff --git a/synapse/storage/monthly_active_users.py b/synapse/storage/monthly_active_users.py
new file mode 100644
index 0000000000..2872ba4cae
--- /dev/null
+++ b/synapse/storage/monthly_active_users.py
@@ -0,0 +1,124 @@
+from twisted.internet import defer
+from synapse.util.caches.descriptors import cachedInlineCallbacks
+from synapse.storage.engines import PostgresEngine, Sqlite3Engine
+
+from ._base import SQLBaseStore
+
+
+class MonthlyActiveUsersStore(SQLBaseStore):
+    def __init__(self, dbconn, hs):
+        super(MonthlyActiveUsersStore, self).__init__(None, hs)
+        self._clock = hs.get_clock()
+        self.max_mau_value = hs.config.max_mau_value
+
+    def reap_monthly_active_users(self):
+        """
+        Cleans out monthly active user table to ensure that no stale
+        entries exist.
+        Return:
+            Defered()
+        """
+        def _reap_users(txn):
+            thirty_days_ago = (
+                int(self._clock.time_msec()) - (1000 * 60 * 60 * 24 * 30)
+            )
+
+            if isinstance(self.database_engine, PostgresEngine):
+                sql = """
+                    DELETE FROM monthly_active_users
+                    WHERE timestamp < ?
+                    RETURNING user_id
+                    """
+                txn.execute(sql, (thirty_days_ago,))
+                res = txn.fetchall()
+                for r in res:
+                    self.is_user_monthly_active.invalidate(r)
+
+                sql = """
+                    DELETE FROM monthly_active_users
+                    ORDER BY timestamp desc
+                    LIMIT -1 OFFSET ?
+                    RETURNING user_id
+                    """
+                txn.execute(sql, (self.max_mau_value,))
+                res = txn.fetchall()
+                for r in res:
+                    self.is_user_monthly_active.invalidate(r)
+                    print r
+                self.get_monthly_active_count.invalidate()
+            elif isinstance(self.database_engine, Sqlite3Engine):
+                sql = "DELETE FROM monthly_active_users WHERE timestamp < ?"
+
+                txn.execute(sql, (thirty_days_ago,))
+                sql = """
+                    DELETE FROM monthly_active_users
+                    ORDER BY timestamp desc
+                    LIMIT -1 OFFSET ?
+                    """
+                txn.execute(sql, (self.max_mau_value,))
+
+                # It seems poor to invalidate the whole cache, but the alternative
+                # is to select then delete which has its own problems.
+                # It seems unlikely that anyone using this feature on large datasets
+                # would be using sqlite and if they are then there will be
+                # larger perf issues than this one to encourage an upgrade to postgres.
+
+                self.is_user_monthly_active.invalidate_all()
+                self.get_monthly_active_count.invalidate_all()
+
+        return self.runInteraction("reap_monthly_active_users", _reap_users)
+
+    @cachedInlineCallbacks(num_args=0)
+    def get_monthly_active_count(self):
+        """
+            Generates current count of monthly active users.abs
+            Return:
+                Defered(int): Number of current monthly active users
+        """
+        def _count_users(txn):
+            sql = "SELECT COALESCE(count(*), 0) FROM monthly_active_users"
+
+            txn.execute(sql)
+            count, = txn.fetchone()
+            return count
+        return self.runInteraction("count_users", _count_users)
+
+    def upsert_monthly_active_user(self, user_id):
+        """
+            Updates or inserts monthly active user member
+            Arguments:
+                user_id (str): user to add/update
+            Deferred(bool): True if a new entry was created, False if an
+                existing one was updated.
+        """
+        return self._simple_upsert(
+            desc="upsert_monthly_active_user",
+            table="monthly_active_users",
+            keyvalues={
+                "user_id": user_id,
+            },
+            values={
+                "timestamp": int(self._clock.time_msec()),
+            },
+            lock=False,
+        )
+
+    @cachedInlineCallbacks(num_args=1)
+    def is_user_monthly_active(self, user_id):
+        """
+            Checks if a given user is part of the monthly active user group
+            Arguments:
+                user_id (str): user to add/update
+            Return:
+                bool : True if user part of group, False otherwise
+        """
+        user_present = yield self._simple_select_onecol(
+            table="monthly_active_users",
+            keyvalues={
+                "user_id": user_id,
+            },
+            retcol="user_id",
+            desc="is_user_monthly_active",
+        )
+
+        defer.returnValue(bool(user_present))
diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py
index b290f834b3..b364719312 100644
--- a/synapse/storage/prepare_database.py
+++ b/synapse/storage/prepare_database.py
@@ -25,7 +25,7 @@ logger = logging.getLogger(__name__)
 
 # Remember to update this number every time a change is made to database
 # schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 50
+SCHEMA_VERSION = 51
 
 dir_path = os.path.abspath(os.path.dirname(__file__))
 
diff --git a/synapse/storage/schema/delta/51/monthly_active_users.sql b/synapse/storage/schema/delta/51/monthly_active_users.sql
new file mode 100644
index 0000000000..f2b6d3e31e
--- /dev/null
+++ b/synapse/storage/schema/delta/51/monthly_active_users.sql
@@ -0,0 +1,23 @@
+/* Copyright 2018 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+-- a table of monthly active users, for use where blocking based on mau limits
+CREATE TABLE monthly_active_users (
+    user_id TEXT NOT NULL,
+    timestamp BIGINT NOT NULL
+);
+
+CREATE UNIQUE INDEX monthly_active_users_users ON monthly_active_users(user_id);
+CREATE INDEX monthly_active_users_time_stamp ON monthly_active_users(timestamp);