backup/warcprox
1
0
Fork 0
mirror of https://github.com/internetarchive/warcprox.git synced 2025-01-18 13:22:09 +01:00
Code Issues Projects Releases Activity

lru_cache

Browse Source
This commit is contained in:
Barbara Miller 2023-07-11 16:35:38 -07:00
parent b91a7d1d89
commit 64a152ee8c
1 changed files with 7 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
warcprox/dedup.py
View File

@ -62,6 +62,7 @@ class DedupableMixin(object):
else:
return recorded_url.response_recorder.payload_size() > self.min_binary_size
class LimitRevisitsPGMixin():
"""
Limit revisits recorded to one per revisit_key
@ -70,6 +71,7 @@ class LimitRevisitsPGMixin():
self.datasource = "postgresql://archiveit@db.qa-archive-it.org/archiveit" # "postgresql://user@db_host/db_name"
self.datatable = "crawl_revisits" # postgres table in db_name
@lru_cache(maxsize=256)
def limit_revisits(self, recorded_url, hash_plus_url=None, revisit_key=None):
# tracks revisits, returns True when we've seen revisit before, else False
if not hash_plus_url:
@ -116,62 +118,6 @@ class LimitRevisitsPGMixin():
return False
class LimitRecords(object):
"""
Limit records to one per revisit_key, e.g., crawl id
"""
def __init__(self, datasource, options=warcprox.Options()):
self.datasource = datasource # "postgresql://user@db_host/db_name"
# self.datatable = revisit_key # set in limit_revisits method
# verify partition table exists
self.datatable = 'crawled_urls' # postgres table in db_name
def limit_records(self, buckets):
for bucket in buckets:
for recorded_url in bucket:
hash_plus_url = b''.join(
(warcprox.digest_str(recorded_url.payload_digest,
self.options.base32),
recorded_url.url)
)
# use ait-job-id if available, or seed?
if (
recorded_url.warcprox_meta
and "metadata" in recorded_url.warcprox_meta
and "ait-job-id" in recorded_url.warcprox_meta["metadata"]
):
revisit_key = recorded_url.warcprox_meta["metadata"]["ait-job-id"]
else:
revisit_key = 'all'
# query = f"SELECT exists(SELECT 1 FROM {revisit_key} WHERE hash_plus_url = {hash_plus_url} LIMIT 1;"
query = f"SELECT exists(SELECT 1 FROM {self.datatable} WHERE hash_plus_url = {hash_plus_url} LIMIT 1;"
try:
conn = psycopg2.connect(self.datasource)
except Exception as e:
self.logger.warning("db connection failure: %s", e)
return False
cur = conn.cursor()
try:
cur.execute(query)
except Exception as e:
self.logger.warning("exception querying for %s in %s: %s", hash_plus_url, revisit_key, e)
return False
result = cur.fetchone()
if result[0]:
logging.info("skipping revisit for url %s and hash %s", recorded_url.url, hash)
return True
else:
query = "INSERT INTO {revisit_key} VALUES(revisit_key, hash_plus_url);"
try:
cur.execute(query)
except Exception as e:
self.logger.warning("exception inserting %s in %s: %s", hash_plus_url, revisit_key, e)
return False
class DedupLoader(warcprox.BaseStandardPostfetchProcessor, DedupableMixin):
def __init__(self, dedup_db, options=warcprox.Options()):
@ -603,7 +549,11 @@ class BatchTroughLoader(warcprox.BaseBatchPostfetchProcessor, LimitRevisitsPGMix
for recorded_url in key_index[entry['digest_key']]:
recorded_url.dedup_info = entry
if recorded_url.dedup_info:
recorded_url.do_not_archive = self.limit_revisits(recorded_url)
recorded_url.do_not_archive = self.limit_revisits(
recorded_url,
revisit_key=str(recorded_url.warcprox_meta["metadata"]["ait-job-id"])
)
logging.info('%s', self.limit_revisits.cache_info())
except Exception as e:
# batch_lookup raised exception or something
logging.warning(