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#!/usr/bin/env python3
"""
KNOWN ISSUE: thumbnails are not published to kafka in multi-processing mode
"""
import argparse
import sys
from sandcrawler import *
def run_extract_json(args):
wayback_client = WaybackClient()
if args.jobs > 1:
worker = PdfExtractWorker(wayback_client, sink=None, thumbnail_sink=None)
multi_worker = MultiprocessWrapper(worker, args.sink)
pusher = JsonLinePusher(multi_worker, args.json_file, batch_size=args.jobs)
else:
worker = PdfExtractWorker(wayback_client,
sink=args.sink,
thumbnail_sink=args.thumbnail_sink)
pusher = JsonLinePusher(worker, args.json_file)
pusher.run()
def run_extract_cdx(args):
wayback_client = WaybackClient()
if args.jobs > 1:
worker = PdfExtractWorker(wayback_client, sink=None, thumbnail_sink=None)
multi_worker = MultiprocessWrapper(worker, args.sink)
pusher = CdxLinePusher(
multi_worker,
args.cdx_file,
filter_http_statuses=[200, 226],
filter_mimetypes=['application/pdf'],
batch_size=args.jobs,
)
else:
worker = PdfExtractWorker(wayback_client,
sink=args.sink,
thumbnail_sink=args.thumbnail_sink)
pusher = CdxLinePusher(
worker,
args.cdx_file,
filter_http_statuses=[200, 226],
filter_mimetypes=['application/pdf'],
)
pusher.run()
def run_extract_zipfile(args):
if args.jobs > 1:
print("multi-processing: {}".format(args.jobs), file=sys.stderr)
worker = PdfExtractBlobWorker(sink=None, thumbnail_sink=None)
multi_worker = MultiprocessWrapper(worker, args.sink, jobs=args.jobs)
pusher = ZipfilePusher(multi_worker, args.zip_file, batch_size=args.jobs)
else:
worker = PdfExtractBlobWorker(sink=args.sink, thumbnail_sink=args.thumbnail_sink)
pusher = ZipfilePusher(worker, args.zip_file)
pusher.run()
def run_single(args):
worker = PdfExtractBlobWorker(sink=args.sink, thumbnail_sink=args.thumbnail_sink)
with open(args.pdf_file, 'rb') as pdf_file:
pdf_bytes = pdf_file.read()
worker.push_record(pdf_bytes)
worker.finish()
if args.thumbnail_sink:
args.thumbnail_sink.finish()
def main():
parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument('--kafka-mode',
action='store_true',
help="send output to Kafka (not stdout)")
parser.add_argument('--kafka-hosts',
default="localhost:9092",
help="list of Kafka brokers (host/port) to use")
parser.add_argument('--kafka-env',
default="dev",
help="Kafka topic namespace to use (eg, prod, qa, dev)")
parser.add_argument('-j',
'--jobs',
default=8,
type=int,
help="parallelism for batch CPU jobs")
subparsers = parser.add_subparsers()
sub_extract_json = subparsers.add_parser(
'extract-json',
help="for each JSON line with CDX info, fetches PDF and does PDF extraction")
sub_extract_json.set_defaults(func=run_extract_json)
sub_extract_json.add_argument('json_file',
help="JSON file to import from (or '-' for stdin)",
type=argparse.FileType('r'))
sub_extract_cdx = subparsers.add_parser(
'extract-cdx', help="for each CDX line, fetches PDF and does PDF extraction")
sub_extract_cdx.set_defaults(func=run_extract_cdx)
sub_extract_cdx.add_argument('cdx_file',
help="CDX file to import from (or '-' for stdin)",
type=argparse.FileType('r'))
sub_extract_zipfile = subparsers.add_parser(
'extract-zipfile',
help="opens zipfile, iterates over PDF files inside and does PDF extract for each")
sub_extract_zipfile.set_defaults(func=run_extract_zipfile)
sub_extract_zipfile.add_argument('zip_file', help="zipfile with PDFs to extract", type=str)
sub_single = subparsers.add_parser('single', help="opens single PDF and extracts it")
sub_single.set_defaults(func=run_single)
sub_single.add_argument('pdf_file', help="single PDF to extract", type=str)
args = parser.parse_args()
if not args.__dict__.get("func"):
parser.print_help(file=sys.stderr)
sys.exit(-1)
args.text_sink = None
args.thumbnail_sink = None
if args.kafka_mode:
text_topic = "sandcrawler-{}.pdf-text".format(args.kafka_env)
thumbnail_topic = "sandcrawler-{}.pdf-thumbnail-180px-jpg".format(args.kafka_env)
args.sink = KafkaCompressSink(kafka_hosts=args.kafka_hosts, produce_topic=text_topic)
args.thumbnail_sink = KafkaSink(kafka_hosts=args.kafka_hosts,
produce_topic=thumbnail_topic)
print("Running in kafka output mode, publishing to {} and {}\n".format(
text_topic, thumbnail_topic),
file=sys.stderr)
else:
args.sink = None
args.thumbnail_sink = None
args.func(args)
if __name__ == '__main__':
main()
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