From 245d53d32a6a98081ba8bf7f7214c8f869e353db Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Wed, 20 Jun 2018 15:33:14 +0100
Subject: [PATCH] Write a clear restart indicator in logs

I'm fed up with never being able to find the point a server restarted in the
logs.
---
 synapse/app/homeserver.py |  7 +------
 synapse/config/logger.py  | 24 ++++++++++++++++++------
 2 files changed, 19 insertions(+), 12 deletions(-)

diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py
index f855925fc8..ae5fc751d5 100755
--- a/synapse/app/homeserver.py
+++ b/synapse/app/homeserver.py
@@ -318,11 +318,6 @@ def setup(config_options):
     # check any extra requirements we have now we have a config
     check_requirements(config)
 
-    version_string = "Synapse/" + get_version_string(synapse)
-
-    logger.info("Server hostname: %s", config.server_name)
-    logger.info("Server version: %s", version_string)
-
     events.USE_FROZEN_DICTS = config.use_frozen_dicts
 
     tls_server_context_factory = context_factory.ServerContextFactory(config)
@@ -335,7 +330,7 @@ def setup(config_options):
         db_config=config.database_config,
         tls_server_context_factory=tls_server_context_factory,
         config=config,
-        version_string=version_string,
+        version_string="Synapse/" + get_version_string(synapse),
         database_engine=database_engine,
     )
 
diff --git a/synapse/config/logger.py b/synapse/config/logger.py
index 6a7228dc2f..557c270fbe 100644
--- a/synapse/config/logger.py
+++ b/synapse/config/logger.py
@@ -12,17 +12,20 @@
 # 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 ._base import Config
-from synapse.util.logcontext import LoggingContextFilter
-from twisted.logger import globalLogBeginner, STDLibLogObserver
 import logging
 import logging.config
-import yaml
-from string import Template
 import os
 import signal
+from string import Template
+import sys
 
+from twisted.logger import STDLibLogObserver, globalLogBeginner
+import yaml
+
+import synapse
+from synapse.util.logcontext import LoggingContextFilter
+from synapse.util.versionstring import get_version_string
+from ._base import Config
 
 DEFAULT_LOG_CONFIG = Template("""
 version: 1
@@ -202,6 +205,15 @@ def setup_logging(config, use_worker_options=False):
     if getattr(signal, "SIGHUP"):
         signal.signal(signal.SIGHUP, sighup)
 
+    # make sure that the first thing we log is a thing we can grep backwards
+    # for
+    logging.warn("***** STARTING SERVER *****")
+    logging.warn(
+        "Server %s version %s",
+        sys.argv[0], get_version_string(synapse),
+    )
+    logging.info("Server hostname: %s", config.server_name)
+
     # It's critical to point twisted's internal logging somewhere, otherwise it
     # stacks up and leaks kup to 64K object;
     # see: https://twistedmatrix.com/trac/ticket/8164