51f26d12fe
- Support multiple JS scripts - Fixed some of bugs - Resolved a few issue relevant to Colab installation
136 lines
5.5 KiB
Python
136 lines
5.5 KiB
Python
from abc import ABC, abstractmethod
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from selenium import webdriver
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from selenium.webdriver.chrome.service import Service
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from selenium.webdriver.common.by import By
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from selenium.webdriver.support.ui import WebDriverWait
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from selenium.webdriver.support import expected_conditions as EC
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from selenium.webdriver.chrome.options import Options
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from selenium.common.exceptions import InvalidArgumentException
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import logging
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logger = logging.getLogger('selenium.webdriver.remote.remote_connection')
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logger.setLevel(logging.WARNING)
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logger_driver = logging.getLogger('selenium.webdriver.common.service')
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logger_driver.setLevel(logging.WARNING)
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urllib3_logger = logging.getLogger('urllib3.connectionpool')
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urllib3_logger.setLevel(logging.WARNING)
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# Disable http.client logging
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http_client_logger = logging.getLogger('http.client')
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http_client_logger.setLevel(logging.WARNING)
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# Disable driver_finder and service logging
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driver_finder_logger = logging.getLogger('selenium.webdriver.common.driver_finder')
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driver_finder_logger.setLevel(logging.WARNING)
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from typing import List
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import requests
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import os
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from pathlib import Path
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class CrawlerStrategy(ABC):
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@abstractmethod
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def crawl(self, url: str, **kwargs) -> str:
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pass
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class CloudCrawlerStrategy(CrawlerStrategy):
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def __init__(self, use_cached_html = False):
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super().__init__()
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self.use_cached_html = use_cached_html
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def crawl(self, url: str) -> str:
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data = {
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"urls": [url],
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"include_raw_html": True,
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"forced": True,
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"extract_blocks": False,
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}
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response = requests.post("http://crawl4ai.uccode.io/crawl", json=data)
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response = response.json()
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html = response["results"][0]["html"]
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return html
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class LocalSeleniumCrawlerStrategy(CrawlerStrategy):
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def __init__(self, use_cached_html=False, js_code=None, **kwargs):
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super().__init__()
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print("[LOG] 🚀 Initializing LocalSeleniumCrawlerStrategy")
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self.options = Options()
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self.options.headless = True
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self.options.add_argument("--no-sandbox")
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self.options.add_argument("--headless")
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# self.options.add_argument("--disable-dev-shm-usage")
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self.options.add_argument("--disable-gpu")
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# self.options.add_argument("--disable-extensions")
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# self.options.add_argument("--disable-infobars")
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# self.options.add_argument("--disable-logging")
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# self.options.add_argument("--disable-popup-blocking")
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# self.options.add_argument("--disable-translate")
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# self.options.add_argument("--disable-default-apps")
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# self.options.add_argument("--disable-background-networking")
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# self.options.add_argument("--disable-sync")
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# self.options.add_argument("--disable-features=NetworkService,NetworkServiceInProcess")
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# self.options.add_argument("--disable-browser-side-navigation")
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# self.options.add_argument("--dns-prefetch-disable")
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# self.options.add_argument("--disable-web-security")
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self.options.add_argument("--log-level=3")
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self.use_cached_html = use_cached_html
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self.use_cached_html = use_cached_html
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self.js_code = js_code
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self.verbose = kwargs.get("verbose", False)
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# chromedriver_autoinstaller.install()
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import chromedriver_autoinstaller
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self.service = Service(chromedriver_autoinstaller.install())
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self.service.log_path = "NUL"
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self.driver = webdriver.Chrome(service=self.service, options=self.options)
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def crawl(self, url: str) -> str:
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if self.use_cached_html:
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cache_file_path = os.path.join(Path.home(), ".crawl4ai", "cache", url.replace("/", "_"))
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if os.path.exists(cache_file_path):
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with open(cache_file_path, "r") as f:
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return f.read()
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try:
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if self.verbose:
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print(f"[LOG] 🕸️ Crawling {url} using LocalSeleniumCrawlerStrategy...")
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self.driver.get(url)
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WebDriverWait(self.driver, 10).until(
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EC.presence_of_all_elements_located((By.TAG_NAME, "html"))
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)
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# Execute JS code if provided
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if self.js_code and type(self.js_code) == str:
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self.driver.execute_script(self.js_code)
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# Optionally, wait for some condition after executing the JS code
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WebDriverWait(self.driver, 10).until(
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lambda driver: driver.execute_script("return document.readyState") == "complete"
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)
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elif self.js_code and type(self.js_code) == list:
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for js in self.js_code:
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self.driver.execute_script(js)
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WebDriverWait(self.driver, 10).until(
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lambda driver: driver.execute_script("return document.readyState") == "complete"
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)
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html = self.driver.page_source
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# Store in cache
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cache_file_path = os.path.join(Path.home(), ".crawl4ai", "cache", url.replace("/", "_"))
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with open(cache_file_path, "w") as f:
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f.write(html)
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if self.verbose:
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print(f"[LOG] ✅ Crawled {url} successfully!")
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return html
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except InvalidArgumentException:
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raise InvalidArgumentException(f"Invalid URL {url}")
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except Exception as e:
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raise Exception(f"Failed to crawl {url}: {str(e)}")
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def quit(self):
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self.driver.quit() |