Optimize scraper performance and add fallback selectors for robustness
Performance improvements: - Validation speed: 59.71s → 10.96s (5.5x improvement) - Removed 50+ console.log statements from JavaScript extraction - Replaced hardcoded sleeps with WebDriverWait for smart element-based waiting - Added aggressive memory management (console.clear, GC, image unloading every 20 scrolls) Scraping improvements: - Increased idle detection from 6 to 12 consecutive idle scrolls for completeness - Added real-time progress updates every 5 scrolls with percentage calculation - Added crash recovery to extract partial reviews if Chrome crashes - Removed artificial 200-review limit to scrape ALL reviews Timestamp tracking: - Added updated_at field separate from started_at for progress tracking - Frontend now shows both "Started" (fixed) and "Last Update" (dynamic) Robustness improvements: - Added 5 fallback CSS selectors to handle different Google Maps page structures - Now tries: div.jftiEf.fontBodyMedium, div.jftiEf, div[data-review-id], etc. - Automatic selector detection logs which selector works for debugging Test results: - Successfully scraped 550 reviews in 150.53s without crashes - Memory management prevents Chrome tab crashes during heavy scraping Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Alejandro Gutiérrez
355
cookie_based_scraper.py
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355
cookie_based_scraper.py
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#!/usr/bin/env python3
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"""
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Cookie-based API scraper - Capture fresh cookies on each run, then fast API scraping.
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Flow:
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1. Start browser (15 seconds)
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2. Capture cookies from active browser session (5 seconds)
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3. Close browser
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4. Use cookies for rapid API pagination (5-10 seconds)
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Total time: ~25-35 seconds for 244 reviews (vs 155 seconds with scrolling)
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"""
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import json
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import logging
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import time
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from typing import List, Optional, Tuple
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import requests
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from seleniumbase import SB
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from modules.api_interceptor import GoogleMapsAPIInterceptor, InterceptedReview
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logging.basicConfig(level=logging.INFO, format='[%(levelname)s] %(message)s')
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log = logging.getLogger(__name__)
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class CookieBasedScraper:
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"""Capture cookies each run, then scrape via API."""
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def __init__(self, url: str, headless: bool = False):
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self.url = url
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self.headless = headless
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self.session = requests.Session()
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self.place_id = None
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self.interceptor = GoogleMapsAPIInterceptor(None)
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def capture_cookies(self) -> bool:
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"""
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Capture cookies from a real browser session.
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Returns True if successful.
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"""
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log.info("="*60)
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log.info("STEP 1: Capturing cookies from browser session")
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log.info("="*60)
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sb = None
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sb_context = None
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try:
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# Create driver - need to enter the context manually
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log.info("Starting browser...")
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sb_context = SB(uc=True, headless=self.headless)
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sb = sb_context.__enter__() # Manually enter context
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log.info("Opening Google Maps...")
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sb.open(self.url)
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time.sleep(2)
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# Dismiss cookie consent
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try:
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sb.click('button[aria-label*="Accept" i],button[aria-label*="Aceptar" i]', timeout=3)
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log.info("✓ Cookie dialog dismissed")
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except:
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pass
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# Click reviews tab
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try:
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sb.click('.LRkQ2', timeout=5)
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log.info("✓ Opened reviews tab")
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time.sleep(3) # Wait for reviews to load
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except Exception as e:
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log.warning(f"Could not click reviews tab: {e}")
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# Extract place ID from current URL
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current_url = sb.get_current_url()
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if '!1s' in current_url:
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parts = current_url.split('!1s')
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if len(parts) > 1:
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self.place_id = parts[1].split('!')[0]
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log.info(f"✓ Extracted place ID: {self.place_id}")
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if not self.place_id:
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log.error("Could not extract place ID")
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return False
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# CRITICAL: Scroll once to trigger an API call!
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# This causes Google to set the necessary session cookies
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log.info("Triggering API call by scrolling...")
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sb.execute_script("window.scrollBy(0, 500)")
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time.sleep(2) # Wait for API call to complete
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log.info("✓ API call triggered - session cookies should now be set")
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# CAPTURE COOKIES using CDP (gets httpOnly cookies too!)
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log.info("Capturing cookies via CDP...")
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try:
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# Use Chrome DevTools Protocol to get ALL cookies from all domains
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cdp_cookies = sb.driver.execute_cdp_cmd('Network.getAllCookies', {})
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browser_cookies = cdp_cookies.get('cookies', [])
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log.info(f"✓ Captured {len(browser_cookies)} cookies via CDP")
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# Also try getting cookies for specific Google domains
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for domain in ['.google.com', 'www.google.com', '.google.es', 'maps.google.com']:
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try:
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domain_cookies = sb.driver.execute_cdp_cmd('Network.getCookies', {'urls': [f'https://{domain}']})
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extra_cookies = domain_cookies.get('cookies', [])
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if extra_cookies:
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log.info(f" Found {len(extra_cookies)} cookies for {domain}")
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# Add any new cookies we don't have yet
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existing_names = {c['name'] for c in browser_cookies}
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for cookie in extra_cookies:
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if cookie['name'] not in existing_names:
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browser_cookies.append(cookie)
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except:
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pass
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log.info(f"✓ Total cookies after checking all domains: {len(browser_cookies)}")
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except Exception as e:
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log.warning(f"CDP cookie capture failed: {e}")
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# Fallback to JavaScript (won't get httpOnly cookies)
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cookie_string = sb.execute_script("return document.cookie")
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browser_cookies = []
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for cookie in cookie_string.split('; '):
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if '=' in cookie:
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name, value = cookie.split('=', 1)
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browser_cookies.append({
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'name': name,
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'value': value,
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'domain': '.google.com',
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'path': '/'
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})
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log.info(f"✓ Fallback: Captured {len(browser_cookies)} cookies via JS")
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# CAPTURE USER AGENT while driver is active
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user_agent = sb.execute_script("return navigator.userAgent")
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log.info(f"✓ Captured user agent")
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# Process cookies into session
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for cookie in browser_cookies:
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self.session.cookies.set(
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name=cookie['name'],
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value=cookie['value'],
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domain=cookie.get('domain', '.google.com'),
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path=cookie.get('path', '/')
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)
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# Set headers
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self.session.headers.update({
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'User-Agent': user_agent,
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'Accept': '*/*',
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'Accept-Language': 'es,es-ES;q=0.9,en;q=0.8',
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'Referer': 'https://www.google.com/maps/',
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'Origin': 'https://www.google.com',
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'X-Requested-With': 'XMLHttpRequest',
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})
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# Print ALL cookie names for debugging
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all_cookie_names = [c['name'] for c in browser_cookies]
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log.info(f"Cookie names: {', '.join(all_cookie_names)}")
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# Print important cookies for debugging
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important_cookies = ['SID', 'HSID', 'SSID', 'APISID', 'SAPISID', '__Secure-1PSID', '__Secure-3PSID']
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found_cookies = []
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for cookie_name in important_cookies:
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if cookie_name in self.session.cookies:
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found_cookies.append(cookie_name)
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log.info(f"✓ Found auth cookies: {', '.join(found_cookies) if found_cookies else 'NONE - this is the problem!'}")
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# Check if we have auth cookies
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if not found_cookies:
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log.warning("\n" + "="*60)
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log.warning("⚠️ NO AUTHENTICATION COOKIES FOUND!")
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log.warning("="*60)
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log.warning("Google Maps API requires you to be logged into Google.")
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log.warning("")
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log.warning("To fix this:")
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log.warning("1. Log into your Google account in Chrome")
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log.warning("2. Visit google.com/maps while logged in")
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log.warning("3. Then run this scraper again")
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log.warning("")
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log.warning("Alternatively, use the hybrid scraper (start.py) which")
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log.warning("handles authentication automatically and already achieves")
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log.warning("95%+ API coverage with 100% parse rate!")
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log.warning("="*60 + "\n")
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# Continue anyway to show the error
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log.info("Continuing anyway to demonstrate the API error...")
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log.info("\n✅ Cookie capture successful!")
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log.info(f" Total cookies: {len(browser_cookies)}")
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log.info(f" Place ID: {self.place_id}")
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log.info(f" Session ready: Yes\n")
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return True
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except Exception as e:
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log.error(f"Cookie capture failed: {e}")
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import traceback
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traceback.print_exc()
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return False
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finally:
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# IMPORTANT: Close browser properly
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if sb_context:
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try:
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log.info("Closing browser...")
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sb_context.__exit__(None, None, None) # Properly exit context
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log.info("✓ Browser closed\n")
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except Exception as e:
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log.debug(f"Error closing browser: {e}")
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def fetch_reviews_page(self, continuation_token: Optional[str] = None) -> Tuple[List[InterceptedReview], Optional[str]]:
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"""
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Fetch a page of reviews via API using captured cookies.
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"""
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# Build pb parameter
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if continuation_token:
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pb = f"!1m6!1s{self.place_id}!6m4!4m1!1e1!4m1!1e3!2m2!1i10!2s{continuation_token}!5m2!1sByJsaaTKLK-bi-gPiqKAiQE!7e81!8m9!2b1!3b1!5b1!7b1!12m4!1b1!2b1!4m1!1e1!11m4!1e3!2e1!6m1!1i2!13m1!1e1"
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else:
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pb = f"!1m6!1s{self.place_id}!6m4!4m1!1e1!4m1!1e3!2m2!1i10!5m2!1sByJsaaTKLK-bi-gPiqKAiQE!7e81!8m9!2b1!3b1!5b1!7b1!12m4!1b1!2b1!4m1!1e1!11m4!1e3!2e1!6m1!1i2!13m1!1e1"
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params = {
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'authuser': '0',
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'hl': 'es',
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'gl': 'es',
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'pb': pb
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}
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try:
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url = 'https://www.google.com/maps/rpc/listugcposts'
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response = self.session.get(url, params=params, timeout=10)
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if response.status_code != 200:
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log.error(f"API error {response.status_code}")
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log.error(f"Response: {response.text[:500]}")
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log.debug(f"Request URL: {response.url}")
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log.debug(f"Request headers: {dict(self.session.headers)}")
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return [], None
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# Parse response
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body = response.text
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if body.startswith(")]}'"):
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body = body[4:].strip()
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data = json.loads(body)
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reviews = self.interceptor._parse_listugcposts_response(data)
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# Get next token
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next_token = None
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if isinstance(data, list) and len(data) > 1 and isinstance(data[1], str):
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next_token = data[1]
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return reviews, next_token
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except Exception as e:
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log.error(f"API request failed: {e}")
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return [], None
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def scrape_all(self, max_pages: int = 100) -> List[dict]:
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"""
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Main scraping method with cookie-based session.
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"""
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# Step 1: Capture cookies from browser
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if not self.capture_cookies():
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log.error("Failed to capture cookies - aborting")
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return []
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# Step 2: Scrape via API
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log.info("="*60)
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log.info("STEP 2: Fast API scraping (no browser needed)")
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log.info("="*60)
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start_time = time.time()
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all_reviews = []
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seen_ids = set()
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token = None
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page = 0
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while page < max_pages:
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page += 1
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log.info(f"Fetching page {page}...")
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reviews, token = self.fetch_reviews_page(token)
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if not reviews:
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if page == 1:
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log.error("No reviews on first page - cookies may have expired or be invalid")
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else:
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log.info("No more reviews found")
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break
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# Deduplicate
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for review in reviews:
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rid = review.review_id or f"{review.author}_{review.date_text}"
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if rid not in seen_ids:
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seen_ids.add(rid)
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all_reviews.append({
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'review_id': review.review_id,
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'author': review.author,
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'rating': review.rating,
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'text': review.text,
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'date_text': review.date_text,
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'avatar_url': review.avatar_url,
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'profile_url': review.profile_url,
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})
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log.info(f" → {len(reviews)} reviews | Total: {len(all_reviews)}")
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if not token:
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log.info("No continuation token - all reviews fetched")
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break
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# Small delay between requests
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time.sleep(0.2)
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elapsed = time.time() - start_time
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log.info("\n" + "="*60)
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log.info("✅ SCRAPING COMPLETED!")
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log.info("="*60)
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log.info(f"Total reviews: {len(all_reviews)}")
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log.info(f"API calls: {page}")
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log.info(f"API scraping time: {elapsed:.2f} seconds")
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log.info(f"Speed: {len(all_reviews)/elapsed:.1f} reviews/second")
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log.info("="*60 + "\n")
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return all_reviews
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def main():
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"""Example usage."""
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url = "https://www.google.com/maps/place/Soho+Club/data=!4m7!3m6!1s0x46dd947294b213bf:0x864c7a232527adb4!8m2!3d54.67869!4d25.2667181!16s%2Fg%2F1thhj5ml!19sChIJvxOylHKU3UYRtK0nJSN6TIY?authuser=0&hl=es&rclk=1"
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scraper = CookieBasedScraper(url, headless=False)
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reviews = scraper.scrape_all(max_pages=50)
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if reviews:
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# Save results
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output_file = 'cookie_based_reviews.json'
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with open(output_file, 'w', encoding='utf-8') as f:
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json.dump(reviews, f, indent=2, ensure_ascii=False)
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log.info(f"💾 Saved {len(reviews)} reviews to {output_file}")
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# Show sample
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log.info("\nSample review:")
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sample = reviews[0]
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log.info(f" Author: {sample['author']}")
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log.info(f" Rating: {sample['rating']}★")
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log.info(f" Date: {sample['date_text']}")
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if sample['text']:
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log.info(f" Text: {sample['text'][:80]}...")
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else:
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log.error("No reviews scraped!")
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if __name__ == '__main__':
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main()
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Reference in New Issue
Block a user