From 3400624d70127a3f5857c7c1015de877eb10aa9a Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Fri, 5 Oct 2018 11:48:32 +0800
Subject: [PATCH] Log pid of launcher script when logging.

---
 config/unicorn_launcher | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/config/unicorn_launcher b/config/unicorn_launcher
index 8ad112065c2..481be1d6a76 100755
--- a/config/unicorn_launcher
+++ b/config/unicorn_launcher
@@ -5,39 +5,44 @@
 
 LOCAL_WEB="http://127.0.0.1:3000/"
 
+function log()
+{
+  echo "($$) $1"
+}
+
 function on_exit()
 {
   kill $UNICORN_PID
-  echo "exiting"
+  log "exiting"
 }
 
 function on_reload()
 {
-  echo "Reloading unicorn"
+  log "Reloading unicorn"
   kill -s USR2 $UNICORN_PID
   unset NEW_UNICORN_PID
 
   while [ -z "$NEW_UNICORN_PID" ]; do
     NEW_UNICORN_PID=`ps -f --ppid $UNICORN_PID | grep 'unicorn master' | grep -v old | grep -v worker | awk '{ print $2 }'`
-    echo "Waiting for new unicorn master pid... $NEW_UNICORN_PID"
+    log "Waiting for new unicorn master pid... $NEW_UNICORN_PID"
     sleep 1
   done
 
   while [ -z `ps -f --ppid $NEW_UNICORN_PID | grep worker | head -1 | awk '{ print $2 }'` ]; do
-    echo "Waiting for new unicorn workers to start up..."
+    log "Waiting for new unicorn workers under $NEW_UNICORN_PID to start up..."
     sleep 1
   done
 
   curl $LOCAL_WEB &> /dev/null
   kill -s QUIT $UNICORN_PID
-  echo "Old pid is: $UNICORN_PID New pid is: $NEW_UNICORN_PID"
+  log "Old pid is: $UNICORN_PID New pid is: $NEW_UNICORN_PID"
   UNICORN_PID=$NEW_UNICORN_PID
 }
 
 function on_reopenlogs()
 {
 
-  echo "Reopening logs"
+  log "Reopening logs"
   kill -s USR1 $UNICORN_PID
 }