Add templates for systemd unit+socket

[Unit]

Description=FJA web frontend

[Service]

Type=simple

WorkingDirectory={{workdir | default("/var/lib/fjaweb")}}

Environment=PYTHONPATH={{workdir | default("/var/lib/fjaweb")}}

ExecStart={{uwsgi | default("/usr/bin/uwsgi")}} \

            -s {{socket | default("/run/uwsgi/fjaweb.socket")}} \

            --manage-script-name --plugin python3 \

            --mount '/=evalweb:create_app()'

User={{user | default("fjaweb")}}

Group={{group | default("nginx")}}

Restart=always

RestartSec=2

TimeoutStopSec=300

{% if quota | default(True) %}

CPUAccounting=true

MemoryAccounting=true

Nice=10

# quota for one CPU

CPUQuota={{quota_cpu | default("10%")}}

MemoryHigh={{quota_mem_high | default("800M")}}

MemoryMax={{quota_mem_max | default("1G")}}

{% endif %}

[Unit]

StartLimitBurst=0

StartLimitIntervalSec=0

# vim: ft=systemd

[Unit]

Description=Socket for FJA web frontend

[Socket]

ListenStream={{socket | default("/run/uwsgi/fjaweb.socket")}}

SocketUser={{user | default("fjaweb")}}

SocketGroup={{group | default("nginx")}}

SocketMode=0660

[Install]

WantedBy=sockets.target

# vim: ft=systemd

#!/usr/bin/env bash

# vim: ft=bash

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

if [[ "$1" = "--help" ]]; then

	echo -e "usage: $0 [--workdir WORKDIR]  [--uwsgi UWSGI_BINARY_PATH]\n" \

	        "          [--user USENAME] [--group GROUPNAME]\n" \

	        "          [--[no-]quota] [--quota-cpu CPU_QUOTA]\n" \

	        "          [--quota-mem-high MEM_QUOTA] [--quota-mem-max MEM_QUOTA]\n"

	exit 1

fi

for i in "socket" "service"; do

	$DIR/../utils/render-template $DIR/fjaweb.$i.j2 /etc/systemd/system/fjaweb.$i "$@"

done

#!/usr/bin/env python3

import jinja2

import sys

from typing import Dict, Union

def die(msg: str) -> None:

    print("ERROR: ", msg, file=sys.stderr)

    sys.exit(1)

if __name__ == "__main__":

    in_file = sys.argv[1]

    out_file = sys.argv[2]

    args: Dict[str, Union[str, bool]] = {}

    i = 3

    while i < len(sys.argv):

        arg = sys.argv[i]

        if not arg.startswith("--"):

            die("argument {arg} does not start with --")

        key = arg[2:]

        if i != len(sys.argv) - 1 and not sys.argv[i + 1].startswith("--"):

            args[key.replace("-", "_")] = sys.argv[i + 1]

            i += 2

        else:

            bval = True

            if key.startswith("no-"):

                bval = False

                key = key[3:]

            args[key.replace("-", "_")] = bval

            i += 1

    template = jinja2.Template(open(in_file, "r").read())

    out = open(out_file, "w")

    out.write(template.render(**args))

# vim: ft=python