From a0e3715dbb00e45d75c45ed903cbffdecb2dfe5c Mon Sep 17 00:00:00 2001
From: Jean Paul Galea <jeanpaul@yubico.com>
Date: Tue, 18 Aug 2015 12:09:27 +0200
Subject: [PATCH] Modify ykval-queue daemon.

- don't run ykval-queue for single node configurations.
---
 ykval-queue | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/ykval-queue b/ykval-queue
index 529f001..d7ab1e5 100755
--- a/ykval-queue
+++ b/ykval-queue
@@ -34,16 +34,20 @@ require_once 'ykval-synclib.php';
 require_once 'ykval-config.php';
 require_once 'ykval-log.php';
 
-// FIXME
-// if sync pool is empty && db queue is empty:
-//	exit
-
 // FIXME
 // don't die if db connection goes away
 //	(e.g. during mysql restart or upgrade).
 
 $sl = new SyncLib('ykval-queue:synclib');
 
+if ($sl->getNumberOfServers() === 0 && $sl->getQueueLength() === 0)
+{
+	$sl->log(LOG_NOTICE, 'server sync pool is empty and sync queue is also empty.');
+	$sl->log(LOG_NOTICE, 'configuration looks like a single node setup.');
+	$sl->log(LOG_NOTICE, 'ykval-queue daemon terminating.');
+	exit(0);
+}
+
 # Loop forever and resync
 do {
   $sl->reSync($baseParams['__YKVAL_SYNC_OLD_LIMIT__'],