def handle(self, *args, **options):
super(Command, self).handle(*args, **options)
if options["sweep"] is False:
# Only allow one script at a time per court combination.
# Note that multiple scripts on multiple machines could still be
# run.
court_str = "-".join(sorted(options["courts"]))
with open(f"/tmp/rss-scraper-{court_str}.pid", "w") as fp:
try:
fcntl.lockf(fp, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
print("Another instance of this program is running with "
"this combination of courts. Only one instance "
"can crawl these courts at a time: '%s'" % court_str)
sys.exit(1)
# Loop over the PACER sites that have RSS feeds and see if they're
# ready to do.
courts = Court.federal_courts.district_pacer_courts().filter(
pacer_has_rss_feed=True, )
if options["courts"] != ["all"]:
courts = courts.filter(pk__in=options["courts"])
iterations_completed = 0
last_trim_date = None
while (options["iterations"] == 0
or iterations_completed < options["iterations"]):
for court in courts:
# Check the last time we successfully got the feed
try:
feed_status = RssFeedStatus.objects.filter(
court=court,
is_sweep=options["sweep"],
status__in=[
RssFeedStatus.PROCESSING_SUCCESSFUL,
RssFeedStatus.UNCHANGED,
RssFeedStatus.PROCESSING_IN_PROGRESS,
],
).latest("date_created")
except RssFeedStatus.DoesNotExist:
# First time running it or status items have been nuked by
# an admin. Make a dummy object, but no need to actually
# save it to the DB. Make it old.
lincolns_birthday = make_aware(datetime(1809, 2, 12))
feed_status = RssFeedStatus(
date_created=lincolns_birthday,
date_last_build=lincolns_birthday,
is_sweep=options["sweep"],
)
if options["courts"] == ["all"] and options["sweep"] is False:
# If it's all courts and it's not a sweep, check if we did
# it recently.
max_visit_ago = now() - timedelta(
seconds=self.RSS_MAX_VISIT_FREQUENCY)
if feed_status.date_created > max_visit_ago:
# Processed too recently. Try next court.
continue
# Don't crawl a court if it says it's been in progress just a
# little while. It's probably queued and on the way.
processing_cutoff = now() - timedelta(
seconds=self.RSS_MAX_PROCESSING_DURATION)
if all([
options["sweep"] is False,
feed_status.status ==
RssFeedStatus.PROCESSING_IN_PROGRESS,
feed_status.date_created > processing_cutoff,
]):
continue
# The court is ripe! Crawl it if it has changed.
# Make a new object to track the attempted crawl.
new_status = RssFeedStatus.objects.create(
court_id=court.pk,
status=RssFeedStatus.PROCESSING_IN_PROGRESS,
is_sweep=options["sweep"],
)
# Check if the item needs crawling, and crawl it if so.
chain(
check_if_feed_changed.s(court.pk, new_status.pk,
feed_status.date_last_build),
merge_rss_feed_contents.s(court.pk),
send_docket_alerts.s(),
# Update recap *documents*, not *dockets*. Updating dockets
# requires much more work, and we don't expect to get much
# docket information from the RSS feeds. RSS feeds also
# have information about hundreds or thousands of
# dockets. Updating them all would be very bad.
add_items_to_solr.s("search.RECAPDocument"),
mark_status_successful.si(new_status.pk),
).apply_async()
# Trim if not too recently trimmed.
trim_cutoff_date = now() - timedelta(
seconds=self.DELAY_BETWEEN_CACHE_TRIMS)
if last_trim_date is None or trim_cutoff_date > last_trim_date:
trim_rss_data.delay()
last_trim_date = now()
# Wait, then attempt the courts again if iterations not exceeded.
iterations_completed += 1
remaining_iterations = options["iterations"] - iterations_completed
if remaining_iterations > 0:
time.sleep(self.DELAY_BETWEEN_ITERATIONS)
def handle(self, *args, **options):
super(Command, self).handle(*args, **options)
if options['sweep'] is False:
# Only allow one script at a time per court combination.
# Note that multiple scripts on multiple machines could still be
# run.
court_str = '-'.join(sorted(options['courts']))
with open('/tmp/rss-scraper-%s.pid' % court_str, 'w') as fp:
try:
fcntl.lockf(fp, fcntl.LOCK_EX | fcntl.LOCK_NB)
except IOError:
print("Another instance of this program is running with "
"for this combination of courts. Only one instance "
"can crawl these courts at a time: '%s'" % court_str)
sys.exit(1)
# Loop over the PACER sites that have RSS feeds and see if they're
# ready to do.
courts = Court.objects.filter(
jurisdiction__in=[
Court.FEDERAL_BANKRUPTCY,
Court.FEDERAL_DISTRICT,
],
pacer_has_rss_feed=True,
)
if options['courts'] != ['all']:
courts = courts.filter(pk__in=options['courts'])
iterations_completed = 0
last_trim_date = None
while options['iterations'] == 0 or \
iterations_completed < options['iterations']:
for court in courts:
# Check the last time we successfully got the feed
try:
feed_status = RssFeedStatus.objects.filter(
court=court,
is_sweep=options['sweep'],
status__in=[
RssFeedStatus.PROCESSING_SUCCESSFUL,
RssFeedStatus.UNCHANGED,
RssFeedStatus.PROCESSING_IN_PROGRESS,
]
).latest('date_created')
except RssFeedStatus.DoesNotExist:
# First time running it or status items have been nuked by
# an admin. Make a dummy object, but no need to actually
# save it to the DB. Make it old.
lincolns_birthday = make_aware(datetime(1809, 2, 12))
feed_status = RssFeedStatus(
date_created=lincolns_birthday,
date_last_build=lincolns_birthday,
is_sweep=options['sweep'],
)
if options['courts'] == ['all'] and options['sweep'] is False:
# If it's all courts and it's not a sweep, check if we did
# it recently.
max_visit_ago = now() - timedelta(
seconds=self.RSS_MAX_VISIT_FREQUENCY)
if feed_status.date_created > max_visit_ago:
# Processed too recently. Try next court.
continue
# Give a court some time to complete during non-sweep crawls
processing_cutoff = now() - timedelta(
seconds=self.RSS_MAX_PROCESSING_DURATION)
if all([
options['sweep'] is False,
feed_status.status == RssFeedStatus.PROCESSING_IN_PROGRESS,
feed_status.date_created > processing_cutoff
]):
continue
# The court is ripe! Crawl it if it has changed.
# Make a new object to track the attempted crawl.
new_status = RssFeedStatus.objects.create(
court_id=court.pk,
status=RssFeedStatus.PROCESSING_IN_PROGRESS,
is_sweep=options['sweep'],
)
# Check if the item needs crawling, and crawl it if so.
chain(
check_if_feed_changed.s(court.pk, new_status.pk,
feed_status.date_last_build),
merge_rss_feed_contents.s(court.pk, new_status.pk),
send_docket_alerts.s(),
# Update recap *documents*, not *dockets*. Updating dockets
# requires much more work, and we don't expect to get much
# docket information from the RSS feeds. RSS feeds also
# have information about hundreds or thousands of
# dockets. Updating them all would be very bad.
add_items_to_solr.s('search.RECAPDocument'),
mark_status_successful.si(new_status.pk),
).apply_async()
# Trim if not too recently trimmed.
trim_cutoff_date = now() - timedelta(
seconds=self.DELAY_BETWEEN_CACHE_TRIMS)
if last_trim_date is None or trim_cutoff_date > last_trim_date:
trim_rss_cache.delay()
last_trim_date = now()
# Wait, then attempt the courts again if iterations not exceeded.
iterations_completed += 1
time.sleep(self.DELAY_BETWEEN_ITERATIONS)