mirror of
https://github.com/YunoHost-Apps/jupyterlab_ynh.git
synced 2024-09-03 19:26:35 +02:00
89 lines
No EOL
3.3 KiB
Bash
89 lines
No EOL
3.3 KiB
Bash
#!/bin/bash
|
|
|
|
# Start (or other actions) a service, print a log in case of failure and optionnaly wait until the service is completely started
|
|
#
|
|
# usage: ynh_systemd_action [-n service_name] [-a action] [ [-l "line to match"] [-p log_path] [-t timeout] [-e length] ]
|
|
# | arg: -n, --service_name= - Name of the service to reload. Default : $app
|
|
# | arg: -a, --action= - Action to perform with systemctl. Default: start
|
|
# | arg: -l, --line_match= - Line to match - The line to find in the log to attest the service have finished to boot.
|
|
# If not defined it don't wait until the service is completely started.
|
|
# | arg: -p, --log_path= - Log file - Path to the log file. Default : /var/log/$app/$app.log
|
|
# | arg: -t, --timeout= - Timeout - The maximum time to wait before ending the watching. Default : 300 seconds.
|
|
# | arg: -e, --length= - Length of the error log : Default : 20
|
|
ynh_systemd_action() {
|
|
# Declare an array to define the options of this helper.
|
|
declare -Ar args_array=( [n]=service_name= [a]=action= [l]=line_match= [p]=log_path= [t]=timeout= [e]=length= )
|
|
local service_name
|
|
local action
|
|
local line_match
|
|
local length
|
|
local log_path
|
|
local timeout
|
|
|
|
# Manage arguments with getopts
|
|
ynh_handle_getopts_args "$@"
|
|
|
|
local service_name="${service_name:-$app}"
|
|
local action=${action:-start}
|
|
local log_path="${log_path:-/var/log/$service_name/$service_name.log}"
|
|
local length=${length:-20}
|
|
local timeout=${timeout:-300}
|
|
|
|
# Start to read the log
|
|
if [[ -n "${line_match:-}" ]]
|
|
then
|
|
local templog="$(mktemp)"
|
|
# Following the starting of the app in its log
|
|
if [ "$log_path" == "systemd" ] ; then
|
|
# Read the systemd journal
|
|
journalctl -u $service_name -f --since=-45 > "$templog" &
|
|
else
|
|
# Read the specified log file
|
|
tail -F -n0 "$log_path" > "$templog" &
|
|
fi
|
|
# Get the PID of the tail command
|
|
local pid_tail=$!
|
|
fi
|
|
|
|
echo "${action^} the service $service_name" >&2
|
|
systemctl $action $service_name \
|
|
|| ( journalctl --lines=$length -u $service_name >&2 \
|
|
; test -n "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2 \
|
|
; false )
|
|
|
|
# Start the timeout and try to find line_match
|
|
if [[ -n "${line_match:-}" ]]
|
|
then
|
|
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_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 $service_name didn't fully started before the timeout." >&2
|
|
journalctl --lines=$length -u $service_name >&2
|
|
test -n "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2
|
|
fi
|
|
|
|
echo ""
|
|
ynh_clean_check_starting
|
|
fi
|
|
}
|
|
|
|
# Clean temporary process and file used by ynh_check_starting
|
|
# (usually used in ynh_clean_setup scripts)
|
|
#
|
|
# usage: ynh_clean_check_starting
|
|
ynh_clean_check_starting () {
|
|
# Stop the execution of tail.
|
|
kill -s 15 $pid_tail 2>&1
|
|
ynh_secure_remove "$templog" 2>&1
|
|
} |