ansible-inventories/arocom#1603 Improve update script

tasks/users/gitscript.yml

@@ -26,7 +26,7 @@
 
   - name: "Create Update Script"
     template:
-      src='scripts/update/gitscript'
+      src='scripts/update/gitscript.jinja2'
       dest='{{ webRoot }}/.update'
       owner='root'
       group='root'

templates/scripts/update/gitscript → templates/scripts/update/gitscript.jinja2

@@ -6,6 +6,20 @@ date
 {% set path=[webRoot, drupal.src.git.target2|default(drupal.src.git.target)]|join('') %}
 cd {{ path }}
 
+echo '> check for changes'
+OUTPUT=$(git remote show origin)
+if [[ $OUTPUT == *"master pushes to master (up to date)"* ]]; then
+  echo "> unchanged, cancel"
+  exit
+fi
+
+LOCKFILE={{ webRoot }}/.update.lock
+if [ -f '$LOCKFILE' ]; then
+echo '> locked'
+exit
+fi
+touch '$LOCKFILE'
+
 echo '> chown/chmod'
 chown -R {{ apacheUser }}:{{ apacheUser }} {{ path }}
 chmod -R g+w {{ path }}
@@ -39,4 +53,7 @@ if [ -f 'post-update.sh' ]; then
   ./post-update.sh
 fi
 
+rm '$LOCKFILE'
+
+echo '> done'
 echo;