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ffsync_ynh/scripts/experimental_helper.sh
2019-11-01 22:04:39 +01:00

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# Check if system wide templates are available and correcly configured
#
# usage: ynh_check_global_uwsgi_config
ynh_check_global_uwsgi_config () {
uwsgi --version || ynh_die --message "You need to add uwsgi (and appropriate plugin) as a dependency"
cat > /etc/systemd/system/uwsgi-app@.service <<EOF
[Unit]
Description=%i uWSGI app
After=syslog.target
[Service]
RuntimeDirectory=%i
ExecStart=/usr/bin/uwsgi \
--ini /etc/uwsgi/apps-available/%i.ini \
--socket /var/run/%i/app.socket \
--logto /var/log/uwsgi/%i/%i.log
User=%i
Group=www-data
Restart=on-failure
KillSignal=SIGQUIT
Type=notify
StandardError=syslog
NotifyAccess=all
[Install]
WantedBy=multi-user.target
EOF
systemctl daemon-reload
}
# Create a dedicated uwsgi ini file to use with generic uwsgi service
#
# This will use a template in ../conf/uwsgi.ini
# and will replace the following keywords with
# global variables that should be defined before calling
# this helper :
#
# __APP__ by $app
# __PATH__ by $path_url
# __FINALPATH__ by $final_path
#
# And dynamic variables (from the last example) :
# __PATH_2__ by $path_2
# __PORT_2__ by $port_2
#
# To be able to customise the settings of the systemd unit you can override the rules with the file "conf/uwsgi-app@override.service".
# This file will be automatically placed on the good place
#
# usage: ynh_add_uwsgi_service
#
# to interact with your service: `systemctl <action> uwsgi-app@app`
ynh_add_uwsgi_service () {
ynh_check_global_uwsgi_config
local others_var=${1:-}
local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
# www-data group is needed since it is this nginx who will start the service
usermod --append --groups www-data "$app" || ynh_die --message "It wasn't possible to add user $app to group www-data"
ynh_backup_if_checksum_is_different --file "$finaluwsgiini"
cp ../conf/uwsgi.ini "$finaluwsgiini"
# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
# Substitute in a nginx config file only if the variable is not empty
if test -n "${final_path:-}"; then
ynh_replace_string --match_string __FINALPATH__ --replace_string "$final_path" --target_file "$finaluwsgiini"
fi
if test -n "${path_url:-}"; then
ynh_replace_string --match_string __PATH__ --replace_string "$path_url" --target_file "$finaluwsgiini"
fi
if test -n "${app:-}"; then
ynh_replace_string --match_string __APP__ --replace_string "$app" --target_file "$finaluwsgiini"
fi
# Replace all other variable given as arguments
for var_to_replace in $others_var
do
# ${var_to_replace^^} make the content of the variable on upper-cases
# ${!var_to_replace} get the content of the variable named $var_to_replace
ynh_replace_string "__${var_to_replace^^}__" "${!var_to_replace}" "$finaluwsgiini"
done
ynh_store_file_checksum --file "$finaluwsgiini"
chown $app:root "$finaluwsgiini"
# make sure the folder for logs exists and set authorizations
mkdir -p /var/log/uwsgi/$app
chown $app:root /var/log/uwsgi/$app
chmod -R u=rwX,g=rX,o= /var/log/uwsgi/$app
# Setup specific Systemd rules if necessary
test -e ../conf/uwsgi-app@override.service && \
mkdir /etc/systemd/system/uwsgi-app@$app.service.d && \
cp ../conf/uwsgi-app@override.service /etc/systemd/system/uwsgi-app@$app.service.d/override.conf
systemctl daemon-reload
systemctl stop "uwsgi-app@$app.service" || true
systemctl enable "uwsgi-app@$app.service"
systemctl start "uwsgi-app@$app.service"
# Add as a service
yunohost service add "uwsgi-app@$app" --log "/var/log/uwsgi/$app/$app.log"
}
# Remove the dedicated uwsgi ini file
#
# usage: ynh_remove_uwsgi_service
ynh_remove_uwsgi_service () {
local finaluwsgiini="/etc/uwsgi/apps-available/$app.ini"
if [ -e "$finaluwsgiini" ]; then
systemctl stop "uwsgi-app@$app.service"
systemctl disable "uwsgi-app@$app.service"
yunohost service remove "uwsgi-app@$app"
ynh_secure_remove --file="$finaluwsgiini"
ynh_secure_remove --file="/var/log/uwsgi/$app"
ynh_secure_remove --file="/etc/systemd/system/uwsgi-app@$app.service.d"
fi
}