openSUSE-release-tools/factory-package-news/announcer.py

#!/usr/bin/python

import httplib
import re
from urlparse import urlparse, urljoin
import smtplib
from email.mime.text import MIMEText
import os
import sys
import email.utils
import argparse
import logging
import yaml
from xdg.BaseDirectory import save_data_path
from collections import namedtuple

logger = logging.getLogger()

# map of default config entries
config_defaults = {
    'sender': 'noreply@opensuse.org',
    'to': 'opensuse-factory@opensuse.org',
    'relay': 'relay.suse.de',
    'url' : "http://download.opensuse.org/tumbleweed/iso/",
    'iso' : "openSUSE-Tumbleweed-DVD-x86_64-Current.iso",
    'name' : 'factory-announcer',
    'subject' : 'New Tumbleweed snapshot {version} released!',
    'changesfile' : "Changes.{version}.txt",
    'bodytemplate' : """
Please note that this mail was generated by a script.
The described changes are computed based on the x86_64 DVD.
The full online repo contains too many changes to be listed here.

Please check the known defects of this snapshot before upgrading:
https://openqa.opensuse.org/tests/overview?distri=opensuse&groupid=1&version=Tumbleweed&build={version}

Please do not reply to this email to report issues, rather file a bug
on bugzilla.opensuse.org. For more information on filing bugs please
see https://en.opensuse.org/openSUSE:Submitting_bug_reports

{text}
""",

}

def _load_config(handle = None):
    d = config_defaults
    y = yaml.safe_load(handle) if handle is not None else {}
    return namedtuple('Config', sorted(d.keys()))(*[ y.get(p, d[p]) for p in sorted(d.keys()) ])

parser = argparse.ArgumentParser(description="Announce new snapshots")
parser.add_argument("--dry", action="store_true", help="dry run")
parser.add_argument("--debug", action="store_true", help="debug output")
parser.add_argument("--verbose", action="store_true", help="verbose")
parser.add_argument("--from", dest='sender', metavar="EMAIL", help="sender email address")
parser.add_argument("--to", metavar="EMAIL", help="recepient email address")
parser.add_argument("--relay", metavar="RELAY", help="SMTP relay server address")
parser.add_argument("--version", metavar="VERSION", help="announce specific version")
parser.add_argument("--config", metavar="FILE", type=argparse.FileType(), help="YAML config file to override defaults")
parser.add_argument("--dump-config", action="store_true", help="dump built in YAML config")

options = parser.parse_args()

# Set logging configuration
logging.basicConfig(level=logging.DEBUG if options.debug
                    else logging.INFO,
                    format='%(asctime)s - %(module)s:%(lineno)d - %(levelname)s - %(message)s')

if options.dump_config:
    print(yaml.dump(config_defaults, default_flow_style=False))
    sys.exit(0)

config = _load_config(options.config)

if not options.sender:
    options.sender = config.sender
if not options.to:
    options.to = config.to
if not options.relay:
    options.relay = config.relay

if not options.sender or not options.to or not options.relay:
    logger.error("need to specify --from and --to and --relay")
    sys.exit(1)

datadir = save_data_path('opensuse.org', config.name)

current_fn = os.path.join(datadir, "announcer-current-version")

if not options.version:
    u = urlparse(urljoin(config.url, config.iso))
    conn = httplib.HTTPConnection(u.hostname, 80)
    conn.request('HEAD', u.path)
    res = conn.getresponse()
    if res.status != 302:
        raise Exception("http fail: %s %s" % (res.status, res.reason))

    loc = res.getheader('location')
    if loc is None:
        raise Exception("empty location!")

    m = re.search(r'(?:Snapshot|Build)([\d.]+)-Media', loc)
    if m is None:
        raise Exception("failed to parse %s"%loc)

    version = m.group(1)
    logger.debug("found version %s", version)
else:
    version = options.version

if os.path.lexists(current_fn):
    prev = os.readlink(current_fn)
    if prev == version:
        logger.debug("version unchanged, exit")
        sys.exit(0)

u = urlparse(urljoin(config.url, config.changesfile.format(version=version)))
conn = httplib.HTTPConnection(u.hostname, 80)
conn.request('HEAD', u.path)
res = conn.getresponse()
if res.status == 302:

    loc = res.getheader('location')
    if loc is None:
        raise Exception("empty location!")
    u = urlparse(loc)

conn = httplib.HTTPConnection(u.hostname, 80)
conn.request('GET', u.path)
res = conn.getresponse()
if res.status != 200:
    raise Exception("http fail: %s %s" % (res.status, res.reason))

txt = res.read()
if "====" not in txt:
    logger.error("no changes or file corrupt? not sending anything")
    sys.exit(1)

msg = MIMEText(config.bodytemplate.format(version=version, text=txt))
msg['Subject'] = config.subject.format(version=version)
msg['From'] = options.sender
msg['To'] = options.to
msg['Mail-Followup-To'] = options.to
msg['Date'] = email.utils.formatdate(localtime=1)
msg['Message-ID'] = email.utils.make_msgid()

if options.dry:
    print("sending ...")
    print(msg.as_string())
else:
    logger.info("announcing version {}".format(version))
    s = smtplib.SMTP(options.relay)
    s.sendmail(options.sender, [msg['To']], msg.as_string())
    s.quit()

    tmpfn = os.path.join(datadir, ".announcer-current-version")
    os.symlink(version, tmpfn)
    os.rename(tmpfn, current_fn)