add basic sandcrawler worker (kafka)

1 files changed, 74 insertions, 0 deletions

diff --git a/python/sandcrawler_worker.py b/python/sandcrawler_worker.py
new file mode 100755
index 0000000..1f02eea
--- /dev/null
+++ b/python/sandcrawler_worker.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+"""
+These are generally for continuously running workers that consume from Kafka.
+Outputs might either be pushed back into Kafka, or directly into sandcrawler-db
+or minio.
+"""
+
+import sys
+import argparse
+import datetime
+import raven
+
+from sandcrawler import *
+
+# Yep, a global. Gets DSN from `SENTRY_DSN` environment variable
+sentry_client = raven.Client()
+
+
+def run_grobid_extract(args):
+    consume_topic = "sandcrawler-{}.ungrobided-pg".format(args.env)
+    produce_topic = "sandcrawler-{}.grobid-output-pg".format(args.env)
+    sink = KafkaSink(kafka_hosts=args.kafka_hosts, produce_topic=produce_topic)
+    worker = GrobidWorker(host_url=args.grobid_host, sink=sink)
+    pusher = KafkaJsonPusher(sink=worker, group="grobid-extract")
+    pusher.run()
+
+def run_grobid_persist(args):
+    consume_topic = "sandcrawler-{}.grobid-output-pg".format(args.env)
+    sink = GrobidPersist(consume_topic=consume_topic)
+    pusher = KafkaJsonPusher(sink)
+    pusher.run()
+
+def run_ingest_file(args):
+    consume_topic = "sandcrawler-{}.ingest-file-requests".format(args.env)
+    produce_topic = "sandcrawler-{}.ingest-file-results".format(args.env)
+    sink = KafkaSink(kafka_hosts=args.kafka_hosts, produce_topic=produce_topic)
+    grobid_client = GrobidClient(host_url=args.grobid_host)
+    worker = IngestFileWorker(grobid_client=grobid_client, sink=sink)
+    pusher = KafkaJsonPusher(worker=worker, kafka_hosts=args.kafka_hosts,
+        consume_topic=consume_topic, group="grobid-extract")
+    pusher.run()
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--kafka-hosts',
+        default="localhost:9092",
+        help="list of Kafka brokers (host/port) to use")
+    parser.add_argument('--env',
+        default="dev",
+        help="Kafka topic namespace to use (eg, prod, qa, dev)")
+    parser.add_argument('--grobid-host',
+        default="http://grobid.qa.fatcat.wiki",
+        help="GROBID API host/port")
+    subparsers = parser.add_subparsers()
+
+    sub_grobid_extract = subparsers.add_parser('grobid-extract')
+    sub_grobid_extract.set_defaults(func=run_grobid_extract)
+
+    sub_grobid_persist = subparsers.add_parser('grobid-persist')
+    sub_grobid_persist.set_defaults(func=run_grobid_persist)
+
+    sub_ingest_file = subparsers.add_parser('ingest-file')
+    sub_ingest_file.set_defaults(func=run_ingest_file)
+
+    args = parser.parse_args()
+    if not args.__dict__.get("func"):
+        print("tell me what to do!")
+        sys.exit(-1)
+
+    args.func(args)
+
+if __name__ == '__main__':
+    main()