Alpine Builder Error to Email

builder-error-to-mail.py

import json
import smtplib
import subprocess
import sys
import time
from email.message import EmailMessage

import toml

TO = "[email protected]"
FROM = "[email protected]"
SERVER = "localhost"
PKGS = {
    "x",
    "y",
}


def send_mail(subject, message, to=TO, server=SERVER, from_=FROM):
    msg = EmailMessage()
    msg["Subject"] = subject
    msg["From"] = from_
    msg["To"] = to
    msg.set_content(message)
    server = smtplib.SMTP(server)
    server.send_message(msg)
    server.quit()


def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)


def read():
    proc = subprocess.Popen(
        ["mosquitto_sub", "-h", "msg.alpinelinux.org", "-t", "build/+/errors"],
        stdout=subprocess.PIPE,
    )
    stdout = proc.stdout
    eprint(f"started mosquitto_sub: {proc.pid}")
    try:
        while True:
            line = stdout.readline()
            eprint(f"got message: {line}")
            try:
                msg = json.loads(line)
                if msg["pkgname"] in PKGS:
                    send_mail("alpine build error", toml.dumps(msg))
                    eprint("sent mail")
            except json.JSONDecodeError:
                eprint("Could not parse")
    finally:
        if proc.poll() is None:
            eprint("terminate mosquitto_sub")
            proc.terminate()
            time.sleep(2)
            if proc.poll() is None:
                eprint("kill mosquitto_sub")
                proc.kill()


if __name__ == "__main__":
    read()