Merge pull request #174 from flashbots/listener-lag-fix

Fix listener first startup

listener

@@ -23,6 +23,7 @@ case "$1" in
   stop)
         echo -n "Stopping daemon: "$NAME
 	start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
+    rm $PIDFILE
         echo "."
 	;;
   tail)
@@ -31,6 +32,7 @@ case "$1" in
   restart)
         echo -n "Restarting daemon: "$NAME
 	start-stop-daemon --stop --quiet --oknodo --retry 30 --pidfile $PIDFILE
+    rm $PIDFILE
 	start-stop-daemon \
         --background \
         --chdir /app \

listener.py

@@ -65,14 +65,10 @@ async def inspect_next_block(
 
     if last_written_block is None:
         # maintain lag if no blocks written yet
-        last_written_block = latest_block_number - 1
+        last_written_block = latest_block_number - BLOCK_NUMBER_LAG - 1
 
     if last_written_block < (latest_block_number - BLOCK_NUMBER_LAG):
-        block_number = (
-            latest_block_number
-            if last_written_block is None
-            else last_written_block + 1
-        )
+        block_number = last_written_block + 1
 
         logger.info(f"Writing block: {block_number}")