[enh] Use cron job for background tasks (close #406)

conf/owncloud.cron

@@ -0,0 +1 @@
+*/15  *  *  *  * #USER# /usr/bin/php -f #DESTDIR#/cron.php

scripts/backup

@@ -29,6 +29,7 @@ ynh_backup "$DATADIR" "data" 1
 mkdir ./conf
 ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "conf/nginx.conf"
 ynh_backup "/etc/php5/fpm/pool.d/${app}.conf" "conf/php-fpm.conf"
+ynh_backup "/etc/cron.d/${app}" "conf/cron"
 
 # Dump the database
 mysqldump -u "$dbuser" -p"$dbpass" --no-create-db "$dbname" > ./db.sql

scripts/install

@@ -163,3 +163,11 @@ ynh_app_setting_set "$app" skipped_regex \
 # Reload services
 sudo service php5-fpm restart || true
 sudo service nginx reload || true
+
+# Add cron job
+cron_path="/etc/cron.d/$app"
+sed -i "s@#USER#@${app}@g"        ../conf/owncloud.cron
+sed -i "s@#DESTDIR#@${DESTDIR}@g" ../conf/owncloud.cron
+sudo cp ../conf/owncloud.cron "$cron_path"
+sudo chmod 644 "$cron_path"
+_exec_occ background:cron

scripts/remove

@@ -13,6 +13,10 @@ dbuser=$app
 # Source app helpers
 . /usr/share/yunohost/helpers
 
+# Remove cron job
+# TODO: Ensure that cron job is not running
+sudo rm -f "/etc/cron.d/${app}"
+
 # Drop MySQL database and user
 ynh_mysql_drop_db "$dbname" 2>/dev/null || true
 ynh_mysql_drop_user "$dbuser" 2>/dev/null || true

scripts/restore

@@ -78,6 +78,9 @@ sudo chmod 755 /home/yunohost.app
 sudo cp -a ./conf/nginx.conf   "$nginx_conf"
 sudo cp -a ./conf/php-fpm.conf "$phpfpm_conf"
 
+# Restore cron job
+sudo cp -a ./config/cron "/etc/cron.d/${app}"
+
 # Reload services
 sudo service php5-fpm restart || true
 sudo service nginx reload || true

scripts/upgrade

@@ -154,6 +154,14 @@ ynh_app_setting_set "$app" skipped_regex \
 sudo service php5-fpm restart || true
 sudo service nginx reload || true
 
+# Add cron job
+cron_path="/etc/cron.d/$app"
+sed -i "s@#USER#@${app}@g"        ../conf/owncloud.cron
+sed -i "s@#DESTDIR#@${DESTDIR}@g" ../conf/owncloud.cron
+sudo cp ../conf/owncloud.cron "$cron_path"
+sudo chmod 644 "$cron_path"
+_exec_occ background:cron
+
 # Warn about possible disabled apps
 echo "Note that if you've installed some third-parties ownCloud applications, \
 they are probably disabled and you'll have to manually activate them again." >&2