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gogs_ynh/scripts/experimental_helper.sh
2018-02-11 00:40:56 +01:00

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# Delete a file checksum from the app settings
#
# $app should be defined when calling this helper
#
# usage: ynh_remove_file_checksum file
# | arg: file - The file for which the checksum will be deleted
ynh_delete_file_checksum () {
local checksum_setting_name=checksum_${1//[\/ ]/_} # Replace all '/' and ' ' by '_'
ynh_app_setting_delete $app $checksum_setting_name
}
# Start or restart a service and follow its booting
#
# usage: ynh_check_starting "Line to match" [Log file] [Timeout] [Service name]
#
# | arg: Line to match - The line to find in the log to attest the service have finished to boot.
# | arg: Log file - The log file to watch
# | arg: Service name
# /var/log/$app/$app.log will be used if no other log is defined.
# | arg: Timeout - The maximum time to wait before ending the watching. Defaut 300 seconds.
ynh_check_starting () {
local line_to_match="$1"
local service_name="${4:-$app}"
local app_log="${2:-/var/log/$service_name/$service_name.log}"
local timeout=${3:-300}
ynh_clean_check_starting () {
# Stop the execution of tail.
kill -s 15 $pid_tail 2>&1
ynh_secure_remove "$templog" 2>&1
}
echo "Starting of $service_name" >&2
systemctl stop $service_name
local templog="$(mktemp)"
# Following the starting of the app in its log
tail -F -n0 "$app_log" > "$templog" &
# Get the PID of the tail command
local pid_tail=$!
systemctl start $service_name
local i=0
for i in `seq 1 $timeout`
do
# Read the log until the sentence is found, that means the app finished to start. Or run until the timeout
if grep --quiet "$line_to_match" "$templog"
then
echo "The service $service_name has correctly started." >&2
break
fi
echo -n "." >&2
sleep 1
done
if [ $i -eq $timeout ]
then
echo "The service $service_name didn't fully started before the timeout." >&2
fi
echo ""
ynh_clean_check_starting
}