mirror of
https://github.com/YunoHost-Apps/lstu_ynh.git
synced 2024-09-03 19:36:12 +02:00
234 lines
No EOL
8.3 KiB
Bash
234 lines
No EOL
8.3 KiB
Bash
#!/bin/bash
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# Start (or other actions) a service, print a log in case of failure and optionnaly wait until the service is completely started
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#
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# usage: ynh_systemd_action [-n service_name] [-a action] [ [-l "line to match"] [-p log_path] [-t timeout] [-e length] ]
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# | arg: -n, --service_name= - Name of the service to reload. Default : $app
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# | arg: -a, --action= - Action to perform with systemctl. Default: start
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# | arg: -l, --line_match= - Line to match - The line to find in the log to attest the service have finished to boot.
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# If not defined it don't wait until the service is completely started.
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# WARNING: When using --line_match, you should always add `ynh_clean_check_starting` into your
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# `ynh_clean_setup` at the beginning of the script. Otherwise, tail will not stop in case of failure
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# of the script. The script will then hang forever.
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# | arg: -p, --log_path= - Log file - Path to the log file. Default : /var/log/$app/$app.log
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# | arg: -t, --timeout= - Timeout - The maximum time to wait before ending the watching. Default : 300 seconds.
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# | arg: -e, --length= - Length of the error log : Default : 20
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ynh_systemd_action() {
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# Declare an array to define the options of this helper.
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declare -Ar args_array=( [n]=service_name= [a]=action= [l]=line_match= [p]=log_path= [t]=timeout= [e]=length= )
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local service_name
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local action
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local line_match
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local length
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local log_path
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local timeout
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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local service_name="${service_name:-$app}"
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local action=${action:-start}
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local log_path="${log_path:-/var/log/$service_name/$service_name.log}"
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local length=${length:-20}
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local timeout=${timeout:-300}
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# Start to read the log
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if [[ -n "${line_match:-}" ]]
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then
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local templog="$(mktemp)"
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# Following the starting of the app in its log
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if [ "$log_path" == "systemd" ] ; then
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# Read the systemd journal
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journalctl --unit=$service_name --follow --since=-0 --quiet > "$templog" &
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# Get the PID of the journalctl command
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local pid_tail=$!
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else
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# Read the specified log file
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tail -F -n0 "$log_path" > "$templog" &
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# Get the PID of the tail command
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local pid_tail=$!
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fi
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fi
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echo "${action^} the service $service_name" >&2
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systemctl $action $service_name \
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|| ( journalctl --no-pager --lines=$length -u $service_name >&2 \
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; test -e "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2 \
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; false )
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# Start the timeout and try to find line_match
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if [[ -n "${line_match:-}" ]]
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then
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local i=0
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for i in $(seq 1 $timeout)
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do
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# Read the log until the sentence is found, that means the app finished to start. Or run until the timeout
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if grep --quiet "$line_match" "$templog"
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then
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echo "The service $service_name has correctly started." >&2
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break
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fi
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echo -n "." >&2
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sleep 1
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done
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if [ $i -eq $timeout ]
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then
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echo "The service $service_name didn't fully started before the timeout." >&2
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echo "Please find here an extract of the end of the log of the service $service_name:"
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journalctl --no-pager --lines=$length -u $service_name >&2
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test -e "$log_path" && echo "--" && tail --lines=$length "$log_path" >&2
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fi
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echo ""
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ynh_clean_check_starting
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fi
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}
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# Clean temporary process and file used by ynh_check_starting
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# (usually used in ynh_clean_setup scripts)
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#
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# usage: ynh_clean_check_starting
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ynh_clean_check_starting () {
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# Stop the execution of tail.
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kill -s 15 $pid_tail 2>&1
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ynh_secure_remove "$templog" 2>&1
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}
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#=================================================
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# EXPERIMENTAL HELPERS
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#=================================================
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# Send an email to inform the administrator
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#
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# usage: ynh_send_readme_to_admin --app_message=app_message [--recipients=recipients] [--type=type]
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# | arg: -m --app_message= - The file with the content to send to the administrator.
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# | arg: -r, --recipients= - The recipients of this email. Use spaces to separate multiples recipients. - default: root
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# example: "root admin@domain"
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# If you give the name of a YunoHost user, ynh_send_readme_to_admin will find its email adress for you
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# example: "root admin@domain user1 user2"
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# | arg: -t, --type= - Type of mail, could be 'backup', 'change_url', 'install', 'remove', 'restore', 'upgrade'
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ynh_send_readme_to_admin() {
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# Declare an array to define the options of this helper.
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declare -Ar args_array=( [m]=app_message= [r]=recipients= [t]=type= )
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local app_message
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local recipients
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local type
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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app_message="${app_message:-}"
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recipients="${recipients:-root}"
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type="${type:-install}"
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# Get the value of admin_mail_html
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admin_mail_html=$(ynh_app_setting_get $app admin_mail_html)
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admin_mail_html="${admin_mail_html:-0}"
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# Retrieve the email of users
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find_mails () {
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local list_mails="$1"
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local mail
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local recipients=" "
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# Read each mail in argument
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for mail in $list_mails
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do
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# Keep root or a real email address as it is
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if [ "$mail" = "root" ] || echo "$mail" | grep --quiet "@"
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then
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recipients="$recipients $mail"
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else
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# But replace an user name without a domain after by its email
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if mail=$(ynh_user_get_info "$mail" "mail" 2> /dev/null)
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then
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recipients="$recipients $mail"
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fi
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fi
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done
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echo "$recipients"
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}
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recipients=$(find_mails "$recipients")
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# Subject base
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local mail_subject="☁️🆈🅽🅷☁️: \`$app\`"
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# Adapt the subject according to the type of mail required.
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if [ "$type" = "backup" ]; then
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mail_subject="$mail_subject has just been backup."
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elif [ "$type" = "change_url" ]; then
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mail_subject="$mail_subject has just been moved to a new URL!"
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elif [ "$type" = "remove" ]; then
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mail_subject="$mail_subject has just been removed!"
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elif [ "$type" = "restore" ]; then
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mail_subject="$mail_subject has just been restored!"
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elif [ "$type" = "upgrade" ]; then
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mail_subject="$mail_subject has just been upgraded!"
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else # install
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mail_subject="$mail_subject has just been installed!"
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fi
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local mail_message="This is an automated message from your beloved YunoHost server.
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Specific information for the application $app.
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$(if [ -n "$app_message" ]
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then
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cat "$app_message"
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else
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echo "...No specific information..."
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fi)
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---
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Automatic diagnosis data from YunoHost
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__PRE_TAG1__$(yunohost tools diagnosis | grep -B 100 "services:" | sed '/services:/d')__PRE_TAG2__"
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# Store the message into a file for further modifications.
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echo "$mail_message" > mail_to_send
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# If a html email is required. Apply html tags to the message.
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if [ "$admin_mail_html" -eq 1 ]
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then
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# Insert 'br' tags at each ending of lines.
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ynh_replace_string "$" "<br>" mail_to_send
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# Insert starting HTML tags
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sed --in-place '1s@^@<!DOCTYPE html>\n<html>\n<head></head>\n<body>\n@' mail_to_send
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# Keep tabulations
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ynh_replace_string " " "\ \ " mail_to_send
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ynh_replace_string "\t" "\ \ " mail_to_send
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# Insert url links tags
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ynh_replace_string "__URL_TAG1__\(.*\)__URL_TAG2__\(.*\)__URL_TAG3__" "<a href=\"\2\">\1</a>" mail_to_send
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# Insert pre tags
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ynh_replace_string "__PRE_TAG1__" "<pre>" mail_to_send
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ynh_replace_string "__PRE_TAG2__" "<\pre>" mail_to_send
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# Insert finishing HTML tags
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echo -e "\n</body>\n</html>" >> mail_to_send
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# Otherwise, remove tags to keep a plain text.
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else
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# Remove URL tags
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ynh_replace_string "__URL_TAG[1,3]__" "" mail_to_send
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ynh_replace_string "__URL_TAG2__" ": " mail_to_send
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# Remove PRE tags
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ynh_replace_string "__PRE_TAG[1-2]__" "" mail_to_send
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fi
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# Define binary to use for mail command
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if [ -e /usr/bin/bsd-mailx ]
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then
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local mail_bin=/usr/bin/bsd-mailx
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else
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local mail_bin=/usr/bin/mail.mailutils
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fi
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if [ "$admin_mail_html" -eq 1 ]
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then
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content_type="text/html"
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else
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content_type="text/plain"
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fi
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# Send the email to the recipients
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cat mail_to_send | $mail_bin -a "Content-Type: $content_type; charset=UTF-8" -s "$mail_subject" "$recipients"
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} |