From 6fa91c2530f96b9736c4130c78761cc72603dbfd Mon Sep 17 00:00:00 2001
From: Ryan Faircloth <35384120+rfaircloth-splunk@users.noreply.github.com>
Date: Tue, 23 Jun 2020 11:04:40 -0400
Subject: [PATCH] Address race condition where shell can write new file before
 read of old is complete (#541)

Fixes #539
---
 package/sbin/entrypoint.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/package/sbin/entrypoint.sh b/package/sbin/entrypoint.sh
index 803c5af..b4aa338 100755
--- a/package/sbin/entrypoint.sh
+++ b/package/sbin/entrypoint.sh
@@ -46,7 +46,9 @@ if [ -f /opt/syslog-ng/etc/conf.d/local/context/splunk_index.csv ]; then
     LEGACY_SPLUNK_INDEX_FILE=/opt/syslog-ng/etc/conf.d/local/context/splunk_index.csv
 fi
 # Add new entries
-awk '{print $0}' ${LEGACY_SPLUNK_INDEX_FILE} /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv /opt/syslog-ng/etc/context_templates/splunk_metadata.csv.example | grep -v '^#' | sort -b -t ',' -k1,2 -u  > /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv
+temp_file=$(mktemp)
+awk '{print $0}' ${LEGACY_SPLUNK_INDEX_FILE} /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv /opt/syslog-ng/etc/context_templates/splunk_metadata.csv.example | grep -v '^#' | sort -b -t ',' -k1,2 -u  > $temp_file
+cp -f $temp_file /opt/syslog-ng/etc/conf.d/local/context/splunk_metadata.csv
 # We don't need this file any longer
 rm -f /opt/syslog-ng/etc/conf.d/local/context/splunk_index.csv.example || true 
 if [ -f /opt/syslog-ng/etc/conf.d/local/context/splunk_index.csv ]; then