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-rw-r--r--changelog.d/5378.misc1
-rw-r--r--changelog.d/5390.bugfix1
-rw-r--r--changelog.d/5458.feature1
-rw-r--r--synapse/handlers/deactivate_account.py4
-rw-r--r--synapse/http/client.py13
-rw-r--r--synapse/metrics/__init__.py2
-rw-r--r--synapse/rest/media/v1/media_repository.py6
-rw-r--r--synapse/storage/registration.py114
-rw-r--r--synapse/storage/schema/delta/55/users_alter_deactivated.sql19
-rw-r--r--tests/rest/client/v2_alpha/test_account.py45
-rw-r--r--tests/storage/test_event_metrics.py61
11 files changed, 222 insertions, 45 deletions
diff --git a/changelog.d/5378.misc b/changelog.d/5378.misc
new file mode 100644
index 0000000000..365e49d634
--- /dev/null
+++ b/changelog.d/5378.misc
@@ -0,0 +1 @@
+Track deactivated accounts in the database.
diff --git a/changelog.d/5390.bugfix b/changelog.d/5390.bugfix
new file mode 100644
index 0000000000..e7b7483cf2
--- /dev/null
+++ b/changelog.d/5390.bugfix
@@ -0,0 +1 @@
+Fix handling of failures fetching remote content to not log failures as exceptions.
diff --git a/changelog.d/5458.feature b/changelog.d/5458.feature
new file mode 100644
index 0000000000..9497f521c8
--- /dev/null
+++ b/changelog.d/5458.feature
@@ -0,0 +1 @@
+Statistics on forward extremities per room are now exposed via Prometheus.
diff --git a/synapse/handlers/deactivate_account.py b/synapse/handlers/deactivate_account.py
index 6a91f7698e..b29089d82c 100644
--- a/synapse/handlers/deactivate_account.py
+++ b/synapse/handlers/deactivate_account.py
@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Copyright 2017, 2018 New Vector Ltd
+# 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.
@@ -114,6 +115,9 @@ class DeactivateAccountHandler(BaseHandler):
         # parts users from rooms (if it isn't already running)
         self._start_user_parting()
 
+        # Mark the user as deactivated.
+        yield self.store.set_user_deactivated_status(user_id, True)
+
         defer.returnValue(identity_server_supports_unbinding)
 
     def _start_user_parting(self):
diff --git a/synapse/http/client.py b/synapse/http/client.py
index 77fe68818b..5c073fff07 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -17,7 +17,7 @@
 import logging
 from io import BytesIO
 
-from six import text_type
+from six import raise_from, text_type
 from six.moves import urllib
 
 import treq
@@ -542,10 +542,15 @@ class SimpleHttpClient(object):
             length = yield make_deferred_yieldable(
                 _readBodyToFile(response, output_stream, max_size)
             )
+        except SynapseError:
+            # This can happen e.g. because the body is too large.
+            raise
         except Exception as e:
-            logger.exception("Failed to download body")
-            raise SynapseError(
-                502, ("Failed to download remote body: %s" % e), Codes.UNKNOWN
+            raise_from(
+                SynapseError(
+                    502, ("Failed to download remote body: %s" % e),
+                ),
+                e
             )
 
         defer.returnValue(
diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index 539c353528..0d3ae1a43d 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -227,7 +227,7 @@ class BucketCollector(object):
                     break
 
         for i in self.buckets:
-            res.append([i, buckets.get(i, 0)])
+            res.append([str(i), buckets.get(i, 0)])
 
         res.append(["+Inf", sum(data.values())])
 
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index 8569677355..a4929dd5db 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -386,8 +386,10 @@ class MediaRepository(object):
                 raise SynapseError(502, "Failed to fetch remote media")
 
             except SynapseError:
-                logger.exception("Failed to fetch remote media %s/%s",
-                                 server_name, media_id)
+                logger.warn(
+                    "Failed to fetch remote media %s/%s",
+                    server_name, media_id,
+                )
                 raise
             except NotRetryingDestination:
                 logger.warn("Not retrying destination %r", server_name)
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 1dd1182e82..4c5751b57f 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
 import re
 
 from six import iterkeys
@@ -31,6 +32,8 @@ from synapse.util.caches.descriptors import cached, cachedInlineCallbacks
 
 THIRTY_MINUTES_IN_MS = 30 * 60 * 1000
 
+logger = logging.getLogger(__name__)
+
 
 class RegistrationWorkerStore(SQLBaseStore):
     def __init__(self, db_conn, hs):
@@ -598,12 +601,76 @@ class RegistrationStore(
             "user_threepids_grandfather", self._bg_user_threepids_grandfather,
         )
 
+        self.register_background_update_handler(
+            "users_set_deactivated_flag", self._backgroud_update_set_deactivated_flag,
+        )
+
         # Create a background job for culling expired 3PID validity tokens
         hs.get_clock().looping_call(
             self.cull_expired_threepid_validation_tokens, THIRTY_MINUTES_IN_MS,
         )
 
     @defer.inlineCallbacks
+    def _backgroud_update_set_deactivated_flag(self, progress, batch_size):
+        """Retrieves a list of all deactivated users and sets the 'deactivated' flag to 1
+        for each of them.
+        """
+
+        last_user = progress.get("user_id", "")
+
+        def _backgroud_update_set_deactivated_flag_txn(txn):
+            txn.execute(
+                """
+                SELECT
+                    users.name,
+                    COUNT(access_tokens.token) AS count_tokens,
+                    COUNT(user_threepids.address) AS count_threepids
+                FROM users
+                    LEFT JOIN access_tokens ON (access_tokens.user_id = users.name)
+                    LEFT JOIN user_threepids ON (user_threepids.user_id = users.name)
+                WHERE password_hash IS NULL OR password_hash = ''
+                AND users.name > ?
+                GROUP BY users.name
+                ORDER BY users.name ASC
+                LIMIT ?;
+                """,
+                (last_user, batch_size),
+            )
+
+            rows = self.cursor_to_dict(txn)
+
+            if not rows:
+                return True
+
+            rows_processed_nb = 0
+
+            for user in rows:
+                if not user["count_tokens"] and not user["count_threepids"]:
+                    self.set_user_deactivated_status_txn(txn, user["user_id"], True)
+                    rows_processed_nb += 1
+
+            logger.info("Marked %d rows as deactivated", rows_processed_nb)
+
+            self._background_update_progress_txn(
+                txn, "users_set_deactivated_flag", {"user_id": rows[-1]["user_id"]}
+            )
+
+            if batch_size > len(rows):
+                return True
+            else:
+                return False
+
+        end = yield self.runInteraction(
+            "users_set_deactivated_flag",
+            _backgroud_update_set_deactivated_flag_txn,
+        )
+
+        if end:
+            yield self._end_background_update("users_set_deactivated_flag")
+
+        defer.returnValue(batch_size)
+
+    @defer.inlineCallbacks
     def add_access_token_to_user(self, user_id, token, device_id=None):
         """Adds an access token for the given user.
 
@@ -1268,3 +1335,50 @@ class RegistrationStore(
             "delete_threepid_session",
             delete_threepid_session_txn,
         )
+
+    def set_user_deactivated_status_txn(self, txn, user_id, deactivated):
+        self._simple_update_one_txn(
+            txn=txn,
+            table="users",
+            keyvalues={"name": user_id},
+            updatevalues={"deactivated": 1 if deactivated else 0},
+        )
+        self._invalidate_cache_and_stream(
+            txn, self.get_user_deactivated_status, (user_id,),
+        )
+
+    @defer.inlineCallbacks
+    def set_user_deactivated_status(self, user_id, deactivated):
+        """Set the `deactivated` property for the provided user to the provided value.
+
+        Args:
+            user_id (str): The ID of the user to set the status for.
+            deactivated (bool): The value to set for `deactivated`.
+        """
+
+        yield self.runInteraction(
+            "set_user_deactivated_status",
+            self.set_user_deactivated_status_txn,
+            user_id, deactivated,
+        )
+
+    @cachedInlineCallbacks()
+    def get_user_deactivated_status(self, user_id):
+        """Retrieve the value for the `deactivated` property for the provided user.
+
+        Args:
+            user_id (str): The ID of the user to retrieve the status for.
+
+        Returns:
+            defer.Deferred(bool): The requested value.
+        """
+
+        res = yield self._simple_select_one_onecol(
+            table="users",
+            keyvalues={"name": user_id},
+            retcol="deactivated",
+            desc="get_user_deactivated_status",
+        )
+
+        # Convert the integer into a boolean.
+        defer.returnValue(res == 1)
diff --git a/synapse/storage/schema/delta/55/users_alter_deactivated.sql b/synapse/storage/schema/delta/55/users_alter_deactivated.sql
new file mode 100644
index 0000000000..dabdde489b
--- /dev/null
+++ b/synapse/storage/schema/delta/55/users_alter_deactivated.sql
@@ -0,0 +1,19 @@
+/* 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.
+ */
+
+ALTER TABLE users ADD deactivated SMALLINT DEFAULT 0 NOT NULL;
+
+INSERT INTO background_updates (update_name, progress_json) VALUES
+  ('users_set_deactivated_flag', '{}');
diff --git a/tests/rest/client/v2_alpha/test_account.py b/tests/rest/client/v2_alpha/test_account.py
index 0d1c0868ce..a60a4a3b87 100644
--- a/tests/rest/client/v2_alpha/test_account.py
+++ b/tests/rest/client/v2_alpha/test_account.py
@@ -15,6 +15,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import json
 import os
 import re
 from email.parser import Parser
@@ -239,3 +240,47 @@ class PasswordResetTestCase(unittest.HomeserverTestCase):
         )
         self.render(request)
         self.assertEquals(expected_code, channel.code, channel.result)
+
+
+class DeactivateTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets_for_client_rest_resource,
+        login.register_servlets,
+        account.register_servlets,
+    ]
+
+    def make_homeserver(self, reactor, clock):
+        hs = self.setup_test_homeserver()
+        return hs
+
+    def test_deactivate_account(self):
+        user_id = self.register_user("kermit", "test")
+        tok = self.login("kermit", "test")
+
+        request_data = json.dumps({
+            "auth": {
+                "type": "m.login.password",
+                "user": user_id,
+                "password": "test",
+            },
+            "erase": False,
+        })
+        request, channel = self.make_request(
+            "POST",
+            "account/deactivate",
+            request_data,
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEqual(request.code, 200)
+
+        store = self.hs.get_datastore()
+
+        # Check that the user has been marked as deactivated.
+        self.assertTrue(self.get_success(store.get_user_deactivated_status(user_id)))
+
+        # Check that this access token has been invalidated.
+        request, channel = self.make_request("GET", "account/whoami")
+        self.render(request)
+        self.assertEqual(request.code, 401)
diff --git a/tests/storage/test_event_metrics.py b/tests/storage/test_event_metrics.py
index 20a068f1fc..1655fcdafc 100644
--- a/tests/storage/test_event_metrics.py
+++ b/tests/storage/test_event_metrics.py
@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from prometheus_client.exposition import generate_latest
+
 from synapse.metrics import REGISTRY
 from synapse.types import Requester, UserID
 
@@ -52,46 +54,29 @@ class ExtremStatisticsTestCase(HomeserverTestCase):
         self.reactor.advance(60 * 60 * 1000)
         self.pump(1)
 
-        items = list(
+        items = set(
             filter(
-                lambda x: x.name == "synapse_forward_extremities",
-                list(REGISTRY.collect()),
+                lambda x: b"synapse_forward_extremities_" in x,
+                generate_latest(REGISTRY).split(b"\n"),
             )
         )
 
-        # 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]
+        expected = set([
+            b'synapse_forward_extremities_bucket{le="1.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="2.0"} 2.0',
+            b'synapse_forward_extremities_bucket{le="3.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="5.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="7.0"} 1.0',
+            b'synapse_forward_extremities_bucket{le="10.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="15.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="20.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="50.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="100.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="200.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="500.0"} 0.0',
+            b'synapse_forward_extremities_bucket{le="+Inf"} 3.0',
+            b'synapse_forward_extremities_count 3.0',
+            b'synapse_forward_extremities_sum 10.0',
+        ])
 
-        # 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)
+        self.assertEqual(items, expected)