From 44bd0a8c1a8cdb4ac03b7d394c30d8a76ecc2603 Mon Sep 17 00:00:00 2001
From: Alexander Sulfrian <alexander@sulfrian.net>
Date: Tue, 5 May 2009 04:30:07 +0200
Subject: feature: selfupdating

---
 mysql/mysql_backup.sh | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'mysql/mysql_backup.sh')

diff --git a/mysql/mysql_backup.sh b/mysql/mysql_backup.sh
index 43e997b..48f41a7 100755
--- a/mysql/mysql_backup.sh
+++ b/mysql/mysql_backup.sh
@@ -26,11 +26,12 @@ TMP_DIRECTORY="/tmp"
 # backup name
 BACKUP_PREFIX="$(hostname -f)_${MYSQL_SERVER}_$(date +%F)"
 
-# logging
+# logging (0 = enabled, all other = disabled)
 LOGGING="0"
 
 ## end of configuration
 
+# only output something if logging is enabled
 log() {
     if [ $LOGGING -eq 0 ]; then
 	if [ -n "$1" ]; then
@@ -41,8 +42,26 @@ log() {
     fi 
 }
 
+# selfupdate magic
+_self_update() {
+    pushd $(dirname $0) &>/dev/null
+
+    git fetch origin 2>/dev/null
+    if [[ -n "$(git whatchanged HEAD..origin/master)" ]]; then
+	echo "Selfupdating backupscript..." | log
+	git merge origin/master | log
+	echo "Selfupdating done." | log
+	echo | log
+
+	popd &>/dev/null
+	exec $0
+    fi
+
+    popd &>/dev/null
+}
+
 # check for tools
-for prog in mysqlshow mysqldump ncftpput
+for prog in git mysqlshow mysqldump ncftpput
 do 
     if ! hash $prog 2>/dev/null ; then
 	echo "Error: This script needs: $prog. Exiting..." >&2
@@ -50,6 +69,8 @@ do
     fi
 done
 
+_self_update()
+
 echo "Started backup of mysql databases ($(date +%c)):" | log
 echo | log
 
-- 
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