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pywb/recorder/redisindexer.py
Ilya Kreymer 9adb8da3b7 recorder: add support for filtering collections to record by regex (default: .*)
add support for excluding certain headers when writing WARCs
tests: add first batch of tests for recorder, using live upstream server
2016-03-11 11:12:25 -08:00

63 lines
2.0 KiB
Python

from pywb.utils.canonicalize import calc_search_range
from pywb.cdx.cdxobject import CDXObject
from pywb.warc.cdxindexer import write_cdx_index
from pywb.utils.timeutils import timestamp_to_datetime
from pywb.utils.timeutils import datetime_to_iso_date, iso_date_to_timestamp
from io import BytesIO
import os
from webagg.indexsource import RedisIndexSource
from webagg.aggregator import SimpleAggregator
from webagg.utils import res_template
#==============================================================================
class WritableRedisIndexer(RedisIndexSource):
def __init__(self, redis_url, rel_path_template='', name='recorder'):
super(WritableRedisIndexer, self).__init__(redis_url)
self.cdx_lookup = SimpleAggregator({name: self})
self.rel_path_template = rel_path_template
def add_record(self, stream, params, filename=None):
if not filename and hasattr(stream, 'name'):
filename = stream.name
rel_path = res_template(self.rel_path_template, params)
filename = os.path.relpath(filename, rel_path)
cdxout = BytesIO()
write_cdx_index(cdxout, stream, filename,
cdxj=True, append_post=True, rel_root=rel_path)
z_key = res_template(self.redis_key_template, params)
cdxes = cdxout.getvalue()
for cdx in cdxes.split(b'\n'):
if cdx:
self.redis.zadd(z_key, 0, cdx)
return cdx
def lookup_revisit(self, params, digest, url, iso_dt):
params['url'] = url
params['closest'] = iso_date_to_timestamp(iso_dt)
filters = []
filters.append('!mime:warc/revisit')
if digest and digest != '-':
filters.append('digest:' + digest.split(':')[-1])
params['filter'] = filters
cdx_iter, errs = self.cdx_lookup(params)
for cdx in cdx_iter:
dt = timestamp_to_datetime(cdx['timestamp'])
return ('revisit', cdx['url'],
datetime_to_iso_date(dt))
return None