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Implement proccess locking for plugin installer in order to prevent script from running on multiple instances at the same time

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This commit is contained in:
Aleksandar Puharic 2023-03-21 08:06:47 +01:00
parent 879df6c042
commit 47ba7873f1
Signed by: xZero707
GPG Key ID: 3CC53DCAA9C237BB
1 changed files with 19 additions and 2 deletions
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21
rootfs/etc/cont-init.d/20-install-plugins
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@ -5,6 +5,13 @@ trap scriptExitHandler EXIT
function scriptExitHandler() {
LAST_EXIT_CODE=$?
# START_PROCESS is set only if script has passed the lock check
# This should ensure that the lock is lifted in any case
if [ -n "${WP_PLUGINS_PATH}" ] && [ -n "${START_PROCESS}" ]; then
rm "${WP_PLUGINS_PATH}/.installer-lock" -f
fi
if [ "${LAST_EXIT_CODE}" = "0" ]; then
echo "> Script finished successfully"
exit "${LAST_EXIT_CODE}"
@ -56,9 +63,19 @@ function main() {
PLUGIN_STRICT_INSTALL="${WORDPRESS_PLUGIN_INSTALL_STRICT:-false}"
WP_CONTENT_PATH="/var/www/html/wp-content"
WP_PLUGINS_PATH="${WP_CONTENT_PATH}/plugins"
CONCURRENCY_LIMIT="${CONCURRENCY_LIMIT:-4}"
export WP_PLUGINS_PATH
# Process locking to prevent multiple instances of this script from running at the same time
if [ -f "${WP_PLUGINS_PATH}/.installer-lock" ]; then
echo "> Installer is locked by another process. Skipping installation."
return 0
fi
START_PROCESS="$(date +%s)"
export WP_PLUGINS_PATH START_PROCESS
touch "${WP_PLUGINS_PATH}/.installer-lock"
CONCURRENCY_LIMIT="${CONCURRENCY_LIMIT:-4}"
echo "> Automated WordPress Plugin Installer"
if [ -z "${PLUGIN_LIST}" ]; then