remove caching

This commit is contained in:
georg.sinn-schirwitz
2025-09-08 14:44:46 +02:00
parent f8e23d0fba
commit 042a196718
13 changed files with 144 additions and 525 deletions

View File

@@ -2,31 +2,19 @@ from datetime import datetime, timezone
from web.scraper import process_region_keyword, scrape_job_page
from web.db import (
db_init,
upsert_cached_page,
upsert_listing,
upsert_job_details,
url_to_job_id,
upsert_user_interaction,
db_remove_cached_url,
db_sync_cached_pages,
db_get_all_job_urls,
db_get_cache_url,
db_delete_job,
remove_job,
normalize_cached_page_paths,
)
# Import utility functions
from web.utils import (
get_cache_dir,
make_request_with_retry,
now_iso,
get_cache_path,
cache_page,
is_cache_stale,
delete_cached_page,
get_cached_content,
ensure_cache_dir
)
from web.db import get_all_regions, get_all_keywords, seed_regions_keywords_from_listings
@@ -45,15 +33,26 @@ def fetch_listings():
except Exception:
pass
yield "Initializing database and seeding regions/keywords...\n"
# Fetch listings for each region/keyword from DB
for region in get_all_regions():
regions = get_all_regions()
keywords = get_all_keywords()
total_combinations = len(regions) * len(keywords)
processed = 0
yield f"Found {len(regions)} regions and {len(keywords)} keywords. Processing {total_combinations} combinations...\n"
for region in regions:
region_name = region.get("name")
if not region_name:
continue
for keyword in get_all_keywords():
for keyword in keywords:
keyword_name = keyword.get("name")
if not keyword_name:
continue
processed += 1
yield f"Processing {region_name} + {keyword_name} ({processed}/{total_combinations})...\n"
for row in process_region_keyword(region_name, keyword_name, discovered_urls):
timestamp, region, keyword, title, pay, location, url = row
discovered_urls.add(url)
@@ -72,75 +71,68 @@ def fetch_listings():
# Remove stale listings: those present in DB but not discovered now.
stale_urls = existing_db_urls - discovered_urls
for url in stale_urls:
try:
jid = url_to_job_id(url)
db_delete_job(jid)
# Also try to remove cached file and its metadata
delete_cached_page(url)
db_remove_cached_url(url)
except Exception:
pass
if stale_urls:
yield f"Removing {len(stale_urls)} stale listings...\n"
for url in stale_urls:
try:
jid = url_to_job_id(url)
db_delete_job(jid)
except Exception:
pass
yield f"Listing fetch complete: {len(discovered_urls)} discovered, {len(new_rows)} new, {len(stale_urls)} stale\n"
return {"discovered": len(discovered_urls), "new": len(new_rows), "stale": len(stale_urls)}
def process_job_url(job_url: str):
try:
job_id = url_to_job_id(job_url)
content = None
cached_page = db_get_cache_url(job_url)
if cached_page:
last_modified = cached_page.get("last_modified")
if last_modified and not is_cache_stale(last_modified):
content = get_cached_content(job_url)
else:
content = make_request_with_retry(job_url, 1)
else:
content = make_request_with_retry(job_url, 1)
yield f"Fetching job page: {job_url}\n"
content = make_request_with_retry(job_url, 1)
if content is None:
yield f"Failed to fetch content for {job_url}, removing from database\n"
remove_job(job_url)
return None
# refresh cache and details
cache_page(job_url, content)
upsert_cached_page(
file_path=get_cache_path(job_url),
url_guess=job_url,
last_modified=now_iso(),
size_bytes=len(content),
job_id=job_id
)
yield f"Scraping job data from {job_url}\n"
job_data = scrape_job_page(content, job_url)
if job_data:
yield f"Upserting job details for {job_id}\n"
upsert_job_details(job_data)
upsert_user_interaction(
job_id, seen_at=datetime.now(timezone.utc).isoformat())
yield f"Successfully processed job {job_id}: {job_data.get('title', 'Unknown')}\n"
return job_data
else:
yield f"Failed to scrape job data from {job_url}\n"
return None
except Exception:
except Exception as e:
yield f"Error processing {job_url}: {str(e)}\n"
return None
def scraper():
"""Main function to run the scraper."""
ensure_cache_dir()
yield "Starting scraper...\n"
db_init()
yield "Database initialized\n"
# First, fetch current listings from search pages and make DB reflect them.
jl = fetch_listings()
# Sync any cached files we have on disk into the cached_pages table.
db_sync_cached_pages(get_cache_dir())
# Normalize any relative cached file paths to absolute paths in DB
normalized = normalize_cached_page_paths()
if normalized:
pass
yield "Fetching listings...\n"
for message in fetch_listings():
yield message
# Finally, fetch and refresh individual job pages for current listings
for url in db_get_all_job_urls():
process_job_url(url)
job_urls = db_get_all_job_urls()
yield f"Processing {len(job_urls)} job pages...\n"
for i, url in enumerate(job_urls, 1):
yield f"\n--- Processing job {i}/{len(job_urls)} ---\n"
for message in process_job_url(url):
yield message
yield "\nScraping completed successfully!\n"
if __name__ == "__main__":