django_example_ynh/scripts/restore

#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source ../settings/scripts/_common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading settings..."

final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
public_path=$(ynh_app_setting_get --app="$app" --key=public_path)
db_name=$(ynh_app_setting_get --app="$app" --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app="$app" --key=psqlpwd)

domain=$(ynh_app_setting_get --app="$app" --key=domain)
path_url=$(ynh_app_setting_get --app="$app" --key=path)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..."

test ! -d $final_path \
	|| ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..."

ynh_restore_file --origin_path="$final_path"
ynh_restore_file --origin_path="$public_path"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..."

# Create the dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path" --use_shell

#=================================================
# RESTORE USER RIGHTS
#=================================================

# Restore permissions on app files
chown -R "$app:www-data" "$public_path"
chown -R "$app:" "$final_path"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=20

ynh_exec_warn_less ynh_install_app_dependencies "$pkg_dependencies"

#=================================================
# PYTHON VIRTUALENV
# Maybe the backup contains a other Python version
#=================================================
ynh_script_progression --message="Recreate Python virtualenv..." --weight=5

# Always recreate everything fresh with current python version
ynh_secure_remove "${final_path}/venv"

# Skip pip because of: https://github.com/YunoHost/issues/issues/1960
python3 -m venv --without-pip "${final_path}/venv"
chown -R "$app:" "$final_path"

#=================================================
# PIP INSTALLATION
#=================================================
ynh_script_progression --message="Install project via pip..." --weight=45
#run source in a 'sub shell'
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset
	ynh_exec_as $app $final_path/venv/bin/python3 -m ensurepip
	ynh_exec_as $app $final_path/venv/bin/pip3 install --upgrade wheel pip setuptools
	ynh_exec_as $app $final_path/venv/bin/pip3 install --no-deps -r "$final_path/requirements.txt"
)

#=================================================
# RESTORE THE PostgreSQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=5

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user="$db_user" --db_name="$db_name" --db_pwd="$db_pwd"
ynh_psql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..."

ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
systemctl enable $app.service --quiet

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add $app --description="Web based management to catalog things" --log="${log_file}"

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================

mkdir -p "$log_path"
touch "${log_file}"
chown -R "$app:" "$log_path"
ynh_restore_file --origin_path="/etc/logrotate.d/$app"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R "$app:" "$log_path"
chown -R "$app:www-data" "$public_path"
chown -R "$app:" "$final_path"

chmod o-rwx "$log_path"
chmod o-rwx "$public_path"
chmod o-rwx "$final_path"

#=================================================
# GENERIC FINALIZATION
#=================================================
# START PYINVENTORY
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=5

ynh_systemd_action --service_name="$app" --action="start"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..."

ynh_systemd_action --service_name="nginx" --action="reload"

#=================================================
# END OF SCRIPT
#=================================================
ynh_script_progression --message="Restoration completed for $app" --last