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#!/usr/bin/env python3
"""
Tool for bulk copying of PDFs (or other files) from GWB to AWS S3.
See unpaywall delivery README (in bnewbold's scratch repo) for notes on running
this script for that specific use-case.
Script takes:
- input TSV: `sha1_hex, file:cdx (json)`
=> usually from dumpfilemeta, filtered down (eg, by join by SHA-1) to a specific manifest
- AWS S3 bucket and prefix
AWS S3 credentials are passed via environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY)
GWB credentials from environment variable PETABOX_WEBDATA_SECRET, else looks in /opt/.petabox/.
20x threads on a single machine can process about 340k files in 3 hours; that's
roughly 6 hours per million per host with 32 threads, or 5k files an hour
(1.6/second) per thread. Two large machines should be able to upload 10 million
files in about 30 hours.
Output:
- errors/stats to stderr
- log to stdout (redirect to file), prefixed by sha1
Requires:
- raven (sentry)
- boto3 (AWS S3 client library)
- wayback/GWB libraries
"""
# XXX: some broken MRO thing going on in here due to python3 object wrangling
# in `wayback` library. Means we can't run pylint.
# pylint: skip-file
import argparse
import base64
import hashlib
import json
import os
import sys
from collections import Counter
from http.client import IncompleteRead
import boto3
import raven
import wayback.exception
from gwb.loader import CDXLoaderFactory
from wayback.resourcestore import ResourceStore
# Yep, a global. Gets DSN from `SENTRY_DSN` environment variable
sentry_client = raven.Client()
class DeliverGwbS3:
def __init__(self, s3_bucket, **kwargs):
self.warc_uri_prefix = kwargs.get('warc_uri_prefix')
self.rstore = None
self.count = Counter()
# /serve/ instead of /download/ doesn't record view count
self.petabox_base_url = kwargs.get('petabox_base_url', 'http://archive.org/serve/')
# gwb library will fall back to reading from /opt/.petabox/webdata.secret
self.petabox_webdata_secret = kwargs.get('petabox_webdata_secret',
os.environ.get('PETABOX_WEBDATA_SECRET'))
self.s3_bucket = s3_bucket
self.s3_prefix = kwargs.get('s3_prefix', 'pdf/')
self.s3_suffix = kwargs.get('s3_suffix', '.pdf')
self.s3 = boto3.resource('s3')
self.bucket = self.s3.Bucket(self.s3_bucket)
def fetch_warc_content(self, warc_path, offset, c_size):
warc_uri = self.warc_uri_prefix + warc_path
if not self.rstore:
self.rstore = ResourceStore(
loaderfactory=CDXLoaderFactory(webdata_secret=self.petabox_webdata_secret,
download_base_url=self.petabox_base_url))
try:
gwb_record = self.rstore.load_resource(warc_uri, offset, c_size)
except wayback.exception.ResourceUnavailable:
return None, dict(
status="error",
reason="failed to load file contents from wayback/petabox (ResourceUnavailable)"
)
except ValueError as ve:
return None, dict(
status="error",
reason="failed to load file contents from wayback/petabox (ValueError: {})".
format(ve))
except EOFError as eofe:
return None, dict(
status="error",
reason="failed to load file contents from wayback/petabox (EOFError: {})".
format(eofe))
except TypeError as te:
return None, dict(
status="error",
reason=
"failed to load file contents from wayback/petabox (TypeError: {}; likely a bug in wayback python code)"
.format(te))
# Note: could consider a generic "except Exception" here, as we get so
# many petabox errors. Do want jobs to fail loud and clear when the
# whole cluster is down though.
if gwb_record.get_status()[0] != 200:
return None, dict(status="error",
reason="archived HTTP response (WARC) was not 200",
warc_status=gwb_record.get_status()[0])
try:
raw_content = gwb_record.open_raw_content().read()
except IncompleteRead as ire:
return None, dict(
status="error",
reason=
"failed to read actual file contents from wayback/petabox (IncompleteRead: {})".
format(ire))
return raw_content, None
def run(self, manifest_file):
sys.stderr.write("Starting...\n")
for line in manifest_file:
self.count['total'] += 1
line = line.strip().split('\t')
if len(line) != 2:
self.count['skip-line'] += 1
continue
sha1_hex, cdx_json = line[0], line[1]
assert len(sha1_hex) == 40
file_cdx = json.loads(cdx_json)
# If warc is not item/file.(w)arc.gz form, skip it
if len(file_cdx['warc'].split('/')) != 2:
sys.stderr.write('WARC path not petabox item/file: {}'.format(file_cdx['warc']))
print("{}\tskip warc\t{}".format(sha1_hex, file_cdx['warc']))
self.count['skip-warc'] += 1
continue
# fetch from GWB/petabox via HTTP range-request
blob, status = self.fetch_warc_content(file_cdx['warc'], file_cdx['offset'],
file_cdx['c_size'])
if blob is None and status:
print("{}\terror petabox\t{}\t{}".format(sha1_hex, file_cdx['warc'],
status['reason']))
self.count['err-petabox-fetch'] += 1
continue
elif not blob:
print("{}\tskip-empty-blob".format(sha1_hex))
self.count['skip-empty-blob'] += 1
continue
# verify sha1
if sha1_hex != hashlib.sha1(blob).hexdigest():
#assert sha1_hex == hashlib.sha1(blob).hexdigest()
#sys.stderr.write("{}\terror petabox-mismatch\n".format(sha1_hex))
print("{}\terror petabox-hash-mismatch".format(sha1_hex))
self.count['err-petabox-hash-mismatch'] += 1
self.count['petabox-ok'] += 1
# upload to AWS S3
obj = self.bucket.put_object(Key="{}{}/{}{}".format(self.s3_prefix, sha1_hex[0:4],
sha1_hex, self.s3_suffix),
Body=blob)
print("{}\tsuccess\t{}\t{}".format(sha1_hex, obj.key, len(blob)))
self.count['success-s3'] += 1
sys.stderr.write("{}\n".format(self.count))
@sentry_client.capture_exceptions
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--s3-bucket',
required=True,
type=str,
help='AWS S3 bucket to upload into')
parser.add_argument('--s3-prefix',
type=str,
default="pdf/",
help='key prefix for items created in bucket')
parser.add_argument('--s3-suffix',
type=str,
default=".pdf",
help='file suffix for created objects')
parser.add_argument('--warc-uri-prefix',
type=str,
default='https://archive.org/serve/',
help='URI where WARCs can be found')
parser.add_argument('manifest_file',
help="TSV/JSON manifest file",
default=sys.stdin,
type=argparse.FileType('r'))
args = parser.parse_args()
worker = DeliverGwbS3(**args.__dict__)
worker.run(args.manifest_file)
if __name__ == '__main__': # pragma: no cover
main()
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