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-rw-r--r--README.rst7
-rwxr-xr-xsynapse/app/homeserver.py4
-rwxr-xr-xsynapse/app/synctl.py3
-rw-r--r--synapse/config/server.py6
-rw-r--r--synapse/handlers/federation.py24
-rw-r--r--synapse/rest/client/v1/directory.py6
-rw-r--r--synapse/storage/background_updates.py83
7 files changed, 96 insertions, 37 deletions
diff --git a/README.rst b/README.rst
index d090ad86a2..9503ef510a 100644
--- a/README.rst
+++ b/README.rst
@@ -354,8 +354,11 @@ ArchLinux
 ---------
 
 The quickest way to get up and running with ArchLinux is probably with the community package
-https://www.archlinux.org/packages/community/any/matrix-synapse/, which should pull in all
-the necessary dependencies.
+https://www.archlinux.org/packages/community/any/matrix-synapse/, which should pull in most of
+the necessary dependencies. If the default web client is to be served (enabled by default in
+the generated config),
+https://www.archlinux.org/packages/community/any/python2-matrix-angular-sdk/ will also need to
+be installed. 
 
 Alternatively, to install using pip a few changes may be needed as ArchLinux
 defaults to python 3, but synapse currently assumes python 2.7 by default:
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index 6f5924d2c7..3457402596 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -25,7 +25,7 @@ import synapse.config.logger
 from synapse.config._base import ConfigError
 
 from synapse.python_dependencies import (
-    check_requirements, DEPENDENCY_LINKS
+    check_requirements, CONDITIONAL_REQUIREMENTS
 )
 
 from synapse.rest import ClientRestResource
@@ -92,7 +92,7 @@ def build_resource_for_web_client(hs):
                 "\n"
                 "You can also disable hosting of the webclient via the\n"
                 "configuration option `web_client`\n"
-                % {"dep": DEPENDENCY_LINKS["matrix-angular-sdk"]}
+                % {"dep": CONDITIONAL_REQUIREMENTS["web_client"].keys()[0]}
             )
         syweb_path = os.path.dirname(syweb.__file__)
         webclient_path = os.path.join(syweb_path, "webclient")
diff --git a/synapse/app/synctl.py b/synapse/app/synctl.py
index 8223734845..3bd7ef7bba 100755
--- a/synapse/app/synctl.py
+++ b/synapse/app/synctl.py
@@ -234,6 +234,9 @@ def main():
 
     if action == "start" or action == "restart":
         if start_stop_synapse:
+            # Check if synapse is already running
+            if os.path.exists(pidfile) and pid_running(int(open(pidfile).read())):
+                abort("synapse.app.homeserver already running")
             start(configfile)
 
         for worker in workers:
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 1f9999d57a..25e6666238 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -144,6 +144,12 @@ class ServerConfig(Config):
         # Whether to serve a web client from the HTTP/HTTPS root resource.
         web_client: True
 
+        # The root directory to server for the above web client.
+        # If left undefined, synapse will serve the matrix-angular-sdk web client.
+        # Make sure matrix-angular-sdk is installed with pip if web_client is True
+        # and web_client_location is undefined
+        # web_client_location: "/path/to/web/root"
+
         # The public-facing base URL for the client API (not including _matrix/...)
         # public_baseurl: https://example.com:8448/
 
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 52be5a402d..ebbf844489 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -171,6 +171,12 @@ class FederationHandler(BaseHandler):
                         yield self._get_missing_events_for_pdu(
                             origin, pdu, prevs, min_depth
                         )
+                elif prevs - seen:
+                    logger.info(
+                        "Not fetching %d missing events for room %r,event %s: %r...",
+                        len(prevs - seen), pdu.room_id, pdu.event_id,
+                        list(prevs - seen)[:5],
+                    )
 
             prevs = {e_id for e_id, _ in pdu.prev_events}
             seen = set(have_seen.keys())
@@ -232,8 +238,8 @@ class FederationHandler(BaseHandler):
         latest |= seen
 
         logger.info(
-            "Missing %d events for room %r: %r...",
-            len(prevs - seen), pdu.room_id, list(prevs - seen)[:5]
+            "Missing %d events for room %r pdu %s: %r...",
+            len(prevs - seen), pdu.room_id, pdu.event_id, list(prevs - seen)[:5]
         )
 
         # XXX: we set timeout to 10s to help workaround
@@ -265,11 +271,17 @@ class FederationHandler(BaseHandler):
             timeout=10000,
         )
 
+        logger.info(
+            "Got %d events: %r...",
+            len(missing_events), [e.event_id for e in missing_events[:5]]
+        )
+
         # We want to sort these by depth so we process them and
         # tell clients about them in order.
         missing_events.sort(key=lambda x: x.depth)
 
         for e in missing_events:
+            logger.info("Handling found event %s", e.event_id)
             yield self.on_receive_pdu(
                 origin,
                 e,
@@ -279,6 +291,14 @@ class FederationHandler(BaseHandler):
         have_seen = yield self.store.have_events(
             [ev for ev, _ in pdu.prev_events]
         )
+        seen = set(have_seen.keys())
+        if prevs - seen:
+            logger.info(
+                "Still missing %d prev events for %s: %r...",
+                len(prevs - seen), pdu.event_id, list(prevs - seen)[:5]
+            )
+        else:
+            logger.info("Found all missing prev events for %s", pdu.event_id)
         defer.returnValue(have_seen)
 
     @log_function
diff --git a/synapse/rest/client/v1/directory.py b/synapse/rest/client/v1/directory.py
index 8930f1826f..f15aa5c13f 100644
--- a/synapse/rest/client/v1/directory.py
+++ b/synapse/rest/client/v1/directory.py
@@ -39,6 +39,7 @@ class ClientDirectoryServer(ClientV1RestServlet):
 
     def __init__(self, hs):
         super(ClientDirectoryServer, self).__init__(hs)
+        self.store = hs.get_datastore()
         self.handlers = hs.get_handlers()
 
     @defer.inlineCallbacks
@@ -70,7 +71,10 @@ class ClientDirectoryServer(ClientV1RestServlet):
         logger.debug("Got servers: %s", servers)
 
         # TODO(erikj): Check types.
-        # TODO(erikj): Check that room exists
+
+        room = yield self.store.get_room(room_id)
+        if room is None:
+            raise SynapseError(400, "Room does not exist")
 
         dir_handler = self.handlers.directory_handler
 
diff --git a/synapse/storage/background_updates.py b/synapse/storage/background_updates.py
index 813ad59e56..d4cf0fc59b 100644
--- a/synapse/storage/background_updates.py
+++ b/synapse/storage/background_updates.py
@@ -228,46 +228,69 @@ class BackgroundUpdateStore(SQLBaseStore):
             columns (list[str]): columns/expressions to include in index
         """
 
-        # if this is postgres, we add the indexes concurrently. Otherwise
-        # we fall back to doing it inline
-        if isinstance(self.database_engine, engines.PostgresEngine):
-            conc = True
-        else:
-            conc = False
-            # We don't use partial indices on SQLite as it wasn't introduced
-            # until 3.8, and wheezy has 3.7
-            where_clause = None
-
-        sql = (
-            "CREATE INDEX %(conc)s %(name)s ON %(table)s (%(columns)s)"
-            " %(where_clause)s"
-        ) % {
-            "conc": "CONCURRENTLY" if conc else "",
-            "name": index_name,
-            "table": table,
-            "columns": ", ".join(columns),
-            "where_clause": "WHERE " + where_clause if where_clause else ""
-        }
-
-        def create_index_concurrently(conn):
+        def create_index_psql(conn):
             conn.rollback()
             # postgres insists on autocommit for the index
             conn.set_session(autocommit=True)
-            c = conn.cursor()
-            c.execute(sql)
-            conn.set_session(autocommit=False)
 
-        def create_index(conn):
+            try:
+                c = conn.cursor()
+
+                # If a previous attempt to create the index was interrupted,
+                # we may already have a half-built index. Let's just drop it
+                # before trying to create it again.
+
+                sql = "DROP INDEX IF EXISTS %s" % (index_name,)
+                logger.debug("[SQL] %s", sql)
+                c.execute(sql)
+
+                sql = (
+                    "CREATE INDEX CONCURRENTLY %(name)s ON %(table)s"
+                    " (%(columns)s) %(where_clause)s"
+                ) % {
+                    "name": index_name,
+                    "table": table,
+                    "columns": ", ".join(columns),
+                    "where_clause": "WHERE " + where_clause if where_clause else ""
+                }
+                logger.debug("[SQL] %s", sql)
+                c.execute(sql)
+            finally:
+                conn.set_session(autocommit=False)
+
+        def create_index_sqlite(conn):
+            # Sqlite doesn't support concurrent creation of indexes.
+            #
+            # We don't use partial indices on SQLite as it wasn't introduced
+            # until 3.8, and wheezy has 3.7
+            #
+            # We assume that sqlite doesn't give us invalid indices; however
+            # we may still end up with the index existing but the
+            # background_updates not having been recorded if synapse got shut
+            # down at the wrong moment - hance we use IF NOT EXISTS. (SQLite
+            # has supported CREATE TABLE|INDEX IF NOT EXISTS since 3.3.0.)
+            sql = (
+                "CREATE INDEX IF NOT EXISTS %(name)s ON %(table)s"
+                " (%(columns)s)"
+            ) % {
+                "name": index_name,
+                "table": table,
+                "columns": ", ".join(columns),
+            }
+
             c = conn.cursor()
+            logger.debug("[SQL] %s", sql)
             c.execute(sql)
 
+        if isinstance(self.database_engine, engines.PostgresEngine):
+            runner = create_index_psql
+        else:
+            runner = create_index_sqlite
+
         @defer.inlineCallbacks
         def updater(progress, batch_size):
             logger.info("Adding index %s to %s", index_name, table)
-            if conc:
-                yield self.runWithConnection(create_index_concurrently)
-            else:
-                yield self.runWithConnection(create_index)
+            yield self.runWithConnection(runner)
             yield self._end_background_update(update_name)
             defer.returnValue(1)