def run(self, interval):
self.log.info('Starting updater service')
last_update = 0
while True:
now = time.time()
sleep = interval + last_update - now
if sleep > 0:
self.log.info('Sleeping for %s', human_readable_duration(sleep))
time.sleep(sleep)
try:
with TrapErrors():
scanner.run(logger=self.log)
feeds.run(logger=self.log, force=False)
except TrapError, exc:
self.log.error('Processing Error', exc_info=exc.args)
last_update = now
def handle_noargs(self, keep_days=KEEP_DAYS, keep_links=KEEP_LINKS, **kwargs):
now = datetime.now()
cutoff = now - timedelta(days=keep_days)
published_links = Link.objects.filter(state='published').order_by('-created')
keep1 = published_links[:keep_links]
keep2 = published_links.filter(created__gte=cutoff)
keep_ids = {link.id for qs in [keep1, keep2] for link in qs}
archive = published_links.exclude(id__in=keep_ids)
archive_count = archive.count()
print 'Number of published items to retain: %d' % len(keep_ids)
print 'Number of published items to archive: %d' % archive_count
# get some verification first, this is destructive as hell.
if archive_count and get_yesno('\nContinue (y/N)? ', default=False):
# make unique directory inside the archive root
base, fmt = ['memebot', 'archive', now.strftime('%Y%m%d')], '%%0%dd' % len(str(MAX_UNIQUE_DIRS - 1))
if not os.path.exists(settings.ARCHIVE_DIR):
os.makedirs(settings.ARCHIVE_DIR)
for i in xrange(MAX_UNIQUE_DIRS):
archive_dir = os.path.join(settings.ARCHIVE_DIR, '.'.join(base + [fmt % i]))
try:
os.mkdir(archive_dir)
break
except OSError, exc:
if exc.errno != errno.EEXIST:
raise
else:
raise OSError(errno.EEXIST, os.strerror(errno.EEXIST, archive_dir))
# rudimentary meter
def update(desc, i):
sys.stderr.write('\r%s ... %d / %d' % (desc, i + 1, archive_count))
sys.stderr.flush()
print '\nBeginning dump ...'
start = time.time()
try:
# dump the contents of the fields we're about to nuke
for i, link in enumerate(archive.only('id', *FIELDS).values('id', *FIELDS)):
id = link.pop('id')
pickle_file = os.path.join(archive_dir, 'link-%08d.pkl' % id)
with open(pickle_file, 'wb') as fp:
pickle.dump(link, fp)
update('Dumping', i)
print
# nuke 'em
for i, link in enumerate(archive.only('id')):
link.state = 'archived'
for field in FIELDS:
setattr(link, field, None)
link.save()
update('Cleaning Content', i)
# compress archive dir
tar_file = archive_dir + '.tar'
if os.path.exists(tar_file):
os.remove(tar_file)
print '\nCreating %s ...' % os.path.basename(tar_file)
with tarfile.open(tar_file, 'w') as tar:
for basedir, subdirs, filenames in os.walk(archive_dir):
for filename in filenames:
file = os.path.join(basedir, filename)
arcname = os.path.relpath(file, settings.ARCHIVE_DIR)
tar.add(file, arcname)
shutil.rmtree(archive_dir)
bz2_file = tar_file + '.bz2'
print 'Creating %s ...' % os.path.basename(bz2_file)
with bz2.BZ2File(bz2_file, 'w', 0, 9) as out_fp:
with open(tar_file, 'rb') as in_fp:
shutil.copyfileobj(in_fp, out_fp)
os.remove(tar_file)
print 'Archive is: ' + os.path.relpath(bz2_file, os.curdir)
finally:
print '\nFinished in ' + human_readable_duration(time.time() - start)
def format_date(date):
return '%s (%s ago)' % (date.strftime('%Y-%m-%d %H:%M:%S'),
human_readable_duration(date, precision=2))
def format_date(date):
return '%s (%s ago)' % (date.strftime('%Y-%m-%d %H:%M:%S'), human_readable_duration(date, precision=2))
