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##
# This file is part of GNU Taler
# (C) 2017,2021 Taler Systems S.A.
#
# GNU Taler is free software; you can redistribute it and/or
# modify it under the terms of the GNU Affero General Public
# License as published by the Free Software Foundation; either
# version 3, or (at your option) any later version.
#
# GNU Taler is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with GNU Taler; see the file COPYING. If not,
# see <http://www.gnu.org/licenses/>
#
# @author Florian Dold
# @file Standalone script to run the blog.
import click
import logging
import argparse
import sys
import os
import site
from .util.talerconfig import TalerConfig, ConfigurationError
LOGGER = logging.getLogger(__name__)
# No perfect match to our logging format, but good enough ...
UWSGI_LOGFMT = "%(ltime) %(proto) %(method) %(uri) %(proto) => %(status)"
arg_venvpath = ["-H", sys.prefix]
# Argument to tell uWSGI to load the python plugin.
# This hack is required, because on systems where the plugin is statically linked,
# loading it causes an error.
arg_load_python = "--if-not-plugin python --plugins python --endif".split(" ")
##
# This function interprets the 'serve-uwsgi' subcommand.
# The effect is to launch the blog UWSGI service. This
# type of service is usually used when the HTTP blog interface
# is accessed via a reverse proxy (like Nginx, for example).
#
# @param command line options.
def handle_serve_uwsgi(config, which_shop):
serve_uwsgi = config[which_shop]["uwsgi_serve"].value_string(required=True).lower()
params = [
"uwsgi",
"uwsgi",
*arg_venvpath,
*arg_load_python,
"--master",
"--die-on-term",
"--log-format",
UWSGI_LOGFMT,
"--module",
"talermerchantdemos.{}:app".format(which_shop),
"--need-app",
"--set-ph", "backend_url={}".format(
config["frontends"]["backend"].value_string(required=True)
),
"--set-ph", "currency={}".format(
config["taler"]["currency"].value_string(required=True)
),
"--set-ph", "apikey={}".format(
config["frontends"]["backend_apikey"].value_string(required=True)
),
"--module",
"--cache2",
"name=paid_articles,items=500"
]
if serve_uwsgi == "tcp":
port = config[which_shop]["uwsgi_port"].value_int(required=True)
spec = ":%d" % (port,)
params.extend(["--socket", spec])
elif serve_uwsgi == "unix":
spec = config[which_shop]["uwsgi_unixpath"].value_filename(required=True)
mode = config[which_shop]["uwsgi_unixpath_mode"].value_filename(required=True)
params.extend(["--socket", spec])
params.extend(["--chmod-socket=" + mode])
os.makedirs(os.path.dirname(spec), exist_ok=True)
logging.info("launching uwsgi with argv %s", params[1:])
try:
os.execlp(*params)
except:
sys.stderr.write(
"Failed to start uwsgi. Please make sure to install uwsgi for Python3."
)
sys.exit(1)
##
# This function interprets the 'serve-http' subcommand.
# The effect it to launch the blog HTTP service.
#
# @param args command line options.
def handle_serve_http(config, which_shop, port=None):
params = [
"uwsgi",
"uwsgi",
*arg_venvpath,
*arg_load_python,
"--master",
"--die-on-term",
"--log-format",
UWSGI_LOGFMT,
"--set-ph", "backend_url={}".format(
config["frontends"]["backend"].value_string(required=True)
),
"--set-ph", "currency={}".format(
config["taler"]["currency"].value_string(required=True)
),
"--set-ph", "apikey={}".format(
config["frontends"]["backend_apikey"].value_string(required=True)
),
"--module",
"talermerchantdemos.{}:app".format(which_shop),
]
# Takes precedence.
if port:
http_serve = "tcp"
else:
http_serve = config[which_shop]["http_serve"].value_string(
required=False,
default="tcp"
).lower()
if http_serve == "tcp":
port_launch = config[which_shop]["http_port"].value_int(required=False) if not port else port
if not port_launch:
sys.stderr.write("Port number wasn't found in config and in arguments.")
exit(1)
params.extend(["--http", f":{port_launch}"])
if http_serve == "unix":
path = config[which_shop]["http_unixpath"].value_filename(required=True)
mode = config[which_shop]["http_unixpath_mode"].value_filename(required=True)
params.extend(["--http-socket", path])
params.extend(["--chmod-socket=" + mode])
os.makedirs(os.path.dirname(path), exist_ok=True)
try:
os.execlp(*params)
except:
sys.stderr.write("Failed to start uwsgi. Please make sure to install uwsgi for Python3.")
sys.exit(1)
def handle_serve_from_config(config_obj, which_shop):
try:
if (
config_obj.value_string(which_shop, "serve", required=True).lower()
== "http"
):
return handle_serve_http(config_obj, which_shop)
handle_serve_uwsgi(config_obj, which_shop)
except ConfigurationError as ce:
print(ce)
exit(1)
@click.command("Global shop launcher")
@click.option("-c", "--config", help="Configuration file", required=False)
@click.option(
"--http-port",
help="HTTP port to serve (if not given, serving comes from config)",
required=False,
type=int,
)
@click.argument("which-shop")
def demos(config, http_port, which_shop):
"""WHICH_SHOP is one of: blog, donations or landing."""
if which_shop not in ["blog", "donations", "landing"]:
print("Please use a valid shop name: blog, donations, landing.")
sys.exit(1)
config_obj = TalerConfig.from_file(config)
if http_port:
return handle_serve_http(config_obj, which_shop, http_port)
handle_serve_from_config(config_obj, which_shop)
demos()
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