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#!/usr/bin/env python3
import multiprocessing
import os
import sys
import time
import apt_pkg
from apt_listchanges.ALCConfig import ALCConfig
from apt_listchanges.ALCLog import set_debug, debug
from apt_listchanges.ALCSeenDb import SeenDb
from apt_listchanges.DebianFiles import (
ControlParser,
ControlStanza,
InstalledPackage,
)
from apt_listchanges.apt_listchanges import Filterer
CHECKPOINT_EVERY = 10
MAX_LOAD_AVG = multiprocessing.cpu_count()
def main() -> int:
apt_pkg.init()
config = ALCConfig()
config.setup(require_debs=False)
set_debug(config.debug)
if not config.save_seen:
return 0
seen_db = SeenDb(config.save_seen)
filterer = Filterer(
config, seen_db, show_all=False, since=False, latest=10)
last_checkpoint = time.time()
status = get_status_db()
for stanza in status.stanzas:
if not process_package(config, filterer, stanza):
continue
if time.time() - last_checkpoint >= CHECKPOINT_EVERY:
debug('Checkpointing')
seen_db.apply_changes()
loadavg = os.getloadavg()[0]
while loadavg > MAX_LOAD_AVG:
debug(f'Load average {loadavg:.2f} > {MAX_LOAD_AVG}, '
f'sleeping for {CHECKPOINT_EVERY} seconds')
time.sleep(CHECKPOINT_EVERY)
loadavg = os.getloadavg()[0]
last_checkpoint = time.time()
seen_db.apply_changes()
return 0
def get_status_db() -> ControlParser:
dpkg_status = apt_pkg.config.find_file('Dir::State::status')
status = ControlParser()
status.readfile(dpkg_status)
return status
def process_package(config: ALCConfig, filterer: Filterer,
stanza: ControlStanza) -> bool:
if not stanza.installed:
return False
pkg = InstalledPackage(stanza, filterer)
seen_db = filterer.seen_db
if seen_db.has_package(pkg.binary):
return False
seen_db.add_package(pkg.binary)
(news, changelog) = pkg.extract_changes_via_installed('both')
if not (config.no_network or news or changelog or
pkg.filterer.filtered):
changelog = pkg.extract_changes_via_apt()
if changelog:
debug(f'Fetched changelog for {pkg.binary} from network')
else:
debug(f'No network changelog available for {pkg.binary}')
return True
if __name__ == '__main__':
sys.exit(main())
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