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-rw-r--r--tests/storage/test_cleanup_extrems.py128
-rw-r--r--tests/storage/test_event_metrics.py97
2 files changed, 146 insertions, 79 deletions
diff --git a/tests/storage/test_cleanup_extrems.py b/tests/storage/test_cleanup_extrems.py
index 6aa8b8b3c6..f4c81ef77d 100644
--- a/tests/storage/test_cleanup_extrems.py
+++ b/tests/storage/test_cleanup_extrems.py
@@ -15,7 +15,6 @@
 
 import os.path
 
-from synapse.api.constants import EventTypes
 from synapse.storage import prepare_database
 from synapse.types import Requester, UserID
 
@@ -23,17 +22,12 @@ from tests.unittest import HomeserverTestCase
 
 
 class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
-    """Test the background update to clean forward extremities table.
     """
-    def make_homeserver(self, reactor, clock):
-        # Hack until we understand why test_forked_graph_cleanup fails with v4
-        config = self.default_config()
-        config['default_room_version'] = '1'
-        return self.setup_test_homeserver(config=config)
+    Test the background update to clean forward extremities table.
+    """
 
     def prepare(self, reactor, clock, homeserver):
         self.store = homeserver.get_datastore()
-        self.event_creator = homeserver.get_event_creation_handler()
         self.room_creator = homeserver.get_room_creation_handler()
 
         # Create a test user and room
@@ -42,56 +36,6 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
         info = self.get_success(self.room_creator.create_room(self.requester, {}))
         self.room_id = info["room_id"]
 
-    def create_and_send_event(self, soft_failed=False, prev_event_ids=None):
-        """Create and send an event.
-
-        Args:
-            soft_failed (bool): Whether to create a soft failed event or not
-            prev_event_ids (list[str]|None): Explicitly set the prev events,
-                or if None just use the default
-
-        Returns:
-            str: The new event's ID.
-        """
-        prev_events_and_hashes = None
-        if prev_event_ids:
-            prev_events_and_hashes = [[p, {}, 0] for p in prev_event_ids]
-
-        event, context = self.get_success(
-            self.event_creator.create_event(
-                self.requester,
-                {
-                    "type": EventTypes.Message,
-                    "room_id": self.room_id,
-                    "sender": self.user.to_string(),
-                    "content": {"body": "", "msgtype": "m.text"},
-                },
-                prev_events_and_hashes=prev_events_and_hashes,
-            )
-        )
-
-        if soft_failed:
-            event.internal_metadata.soft_failed = True
-
-        self.get_success(
-            self.event_creator.send_nonmember_event(self.requester, event, context)
-        )
-
-        return event.event_id
-
-    def add_extremity(self, event_id):
-        """Add the given event as an extremity to the room.
-        """
-        self.get_success(
-            self.store._simple_insert(
-                table="event_forward_extremities",
-                values={"room_id": self.room_id, "event_id": event_id},
-                desc="test_add_extremity",
-            )
-        )
-
-        self.store.get_latest_event_ids_in_room.invalidate((self.room_id,))
-
     def run_background_update(self):
         """Re run the background update to clean up the extremities.
         """
@@ -131,10 +75,16 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
         """
 
         # Create the room graph
-        event_id_1 = self.create_and_send_event()
-        event_id_2 = self.create_and_send_event(True, [event_id_1])
-        event_id_3 = self.create_and_send_event(True, [event_id_2])
-        event_id_4 = self.create_and_send_event(False, [event_id_3])
+        event_id_1 = self.create_and_send_event(self.room_id, self.user)
+        event_id_2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_1]
+        )
+        event_id_3 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_2]
+        )
+        event_id_4 = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_3]
+        )
 
         # Check the latest events are as expected
         latest_event_ids = self.get_success(
@@ -154,12 +104,16 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
         Where SF* are soft failed, and with extremities of A and B
         """
         # Create the room graph
-        event_id_a = self.create_and_send_event()
-        event_id_sf1 = self.create_and_send_event(True, [event_id_a])
-        event_id_b = self.create_and_send_event(False, [event_id_sf1])
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_b = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf1]
+        )
 
         # Add the new extremity and check the latest events are as expected
-        self.add_extremity(event_id_a)
+        self.add_extremity(self.room_id, event_id_a)
 
         latest_event_ids = self.get_success(
             self.store.get_latest_event_ids_in_room(self.room_id)
@@ -185,13 +139,19 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
         Where SF* are soft failed, and with extremities of A and B
         """
         # Create the room graph
-        event_id_a = self.create_and_send_event()
-        event_id_sf1 = self.create_and_send_event(True, [event_id_a])
-        event_id_sf2 = self.create_and_send_event(True, [event_id_sf1])
-        event_id_b = self.create_and_send_event(False, [event_id_sf2])
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_sf2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf1]
+        )
+        event_id_b = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf2]
+        )
 
         # Add the new extremity and check the latest events are as expected
-        self.add_extremity(event_id_a)
+        self.add_extremity(self.room_id, event_id_a)
 
         latest_event_ids = self.get_success(
             self.store.get_latest_event_ids_in_room(self.room_id)
@@ -227,16 +187,26 @@ class CleanupExtremBackgroundUpdateStoreTestCase(HomeserverTestCase):
         """
 
         # Create the room graph
-        event_id_a = self.create_and_send_event()
-        event_id_b = self.create_and_send_event()
-        event_id_sf1 = self.create_and_send_event(True, [event_id_a])
-        event_id_sf2 = self.create_and_send_event(True, [event_id_a, event_id_b])
-        event_id_sf3 = self.create_and_send_event(True, [event_id_sf1])
-        self.create_and_send_event(True, [event_id_sf2, event_id_sf3])  # SF4
-        event_id_c = self.create_and_send_event(False, [event_id_sf3])
+        event_id_a = self.create_and_send_event(self.room_id, self.user)
+        event_id_b = self.create_and_send_event(self.room_id, self.user)
+        event_id_sf1 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a]
+        )
+        event_id_sf2 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_a, event_id_b]
+        )
+        event_id_sf3 = self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf1]
+        )
+        self.create_and_send_event(
+            self.room_id, self.user, True, [event_id_sf2, event_id_sf3]
+        )  # SF4
+        event_id_c = self.create_and_send_event(
+            self.room_id, self.user, False, [event_id_sf3]
+        )
 
         # Add the new extremity and check the latest events are as expected
-        self.add_extremity(event_id_a)
+        self.add_extremity(self.room_id, event_id_a)
 
         latest_event_ids = self.get_success(
             self.store.get_latest_event_ids_in_room(self.room_id)
diff --git a/tests/storage/test_event_metrics.py b/tests/storage/test_event_metrics.py
new file mode 100644
index 0000000000..20a068f1fc
--- /dev/null
+++ b/tests/storage/test_event_metrics.py
@@ -0,0 +1,97 @@
+# -*- coding: utf-8 -*-
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# 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.
+
+from synapse.metrics import REGISTRY
+from synapse.types import Requester, UserID
+
+from tests.unittest import HomeserverTestCase
+
+
+class ExtremStatisticsTestCase(HomeserverTestCase):
+    def test_exposed_to_prometheus(self):
+        """
+        Forward extremity counts are exposed via Prometheus.
+        """
+        room_creator = self.hs.get_room_creation_handler()
+
+        user = UserID("alice", "test")
+        requester = Requester(user, None, False, None, None)
+
+        # Real events, forward extremities
+        events = [(3, 2), (6, 2), (4, 6)]
+
+        for event_count, extrems in events:
+            info = self.get_success(room_creator.create_room(requester, {}))
+            room_id = info["room_id"]
+
+            last_event = None
+
+            # Make a real event chain
+            for i in range(event_count):
+                ev = self.create_and_send_event(room_id, user, False, last_event)
+                last_event = [ev]
+
+            # Sprinkle in some extremities
+            for i in range(extrems):
+                ev = self.create_and_send_event(room_id, user, False, last_event)
+
+        # Let it run for a while, then pull out the statistics from the
+        # Prometheus client registry
+        self.reactor.advance(60 * 60 * 1000)
+        self.pump(1)
+
+        items = list(
+            filter(
+                lambda x: x.name == "synapse_forward_extremities",
+                list(REGISTRY.collect()),
+            )
+        )
+
+        # Check the values are what we want
+        buckets = {}
+        _count = 0
+        _sum = 0
+
+        for i in items[0].samples:
+            if i[0].endswith("_bucket"):
+                buckets[i[1]['le']] = i[2]
+            elif i[0].endswith("_count"):
+                _count = i[2]
+            elif i[0].endswith("_sum"):
+                _sum = i[2]
+
+        # 3 buckets, 2 with 2 extrems, 1 with 6 extrems (bucketed as 7), and
+        # +Inf which is all
+        self.assertEqual(
+            buckets,
+            {
+                1.0: 0,
+                2.0: 2,
+                3.0: 0,
+                5.0: 0,
+                7.0: 1,
+                10.0: 0,
+                15.0: 0,
+                20.0: 0,
+                50.0: 0,
+                100.0: 0,
+                200.0: 0,
+                500.0: 0,
+                "+Inf": 3,
+            },
+        )
+        # 3 rooms, with 10 total events
+        self.assertEqual(_count, 3)
+        self.assertEqual(_sum, 10)