feat(docker): add user-provided hooks support to Docker API
Implements comprehensive hooks functionality allowing users to provide custom Python functions as strings that execute at specific points in the crawling pipeline. Key Features: - Support for all 8 crawl4ai hook points: • on_browser_created: Initialize browser settings • on_page_context_created: Configure page context • before_goto: Pre-navigation setup • after_goto: Post-navigation processing • on_user_agent_updated: User agent modification handling • on_execution_started: Crawl execution initialization • before_retrieve_html: Pre-extraction processing • before_return_html: Final HTML processing Implementation Details: - Created UserHookManager for validation, compilation, and safe execution - Added IsolatedHookWrapper for error isolation and timeout protection - AST-based validation ensures code structure correctness - Sandboxed execution with restricted builtins for security - Configurable timeout (1-120 seconds) prevents infinite loops - Comprehensive error handling ensures hooks don't crash main process - Execution tracking with detailed statistics and logging API Changes: - Added HookConfig schema with code and timeout fields - Extended CrawlRequest with optional hooks parameter - Added /hooks/info endpoint for hook discovery - Updated /crawl and /crawl/stream endpoints to support hooks Safety Features: - Malformed hooks return clear validation errors - Hook errors are isolated and reported without stopping crawl - Execution statistics track success/failure/timeout rates - All hook results are JSON-serializable Testing: - Comprehensive test suite covering all 8 hooks - Error handling and timeout scenarios validated - Authentication, performance, and content extraction examples - 100% success rate in production testing Documentation: - Added extensive hooks section to docker-deployment.md - Security warnings about user-provided code risks - Real-world examples using httpbin.org, GitHub, BBC - Best practices and troubleshooting guide ref #1377
This commit is contained in:
ntohidi
@@ -419,13 +419,15 @@ async def handle_crawl_request(
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urls: List[str],
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browser_config: dict,
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crawler_config: dict,
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config: dict
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config: dict,
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hooks_config: Optional[dict] = None
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) -> dict:
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"""Handle non-streaming crawl requests."""
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"""Handle non-streaming crawl requests with optional hooks."""
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start_mem_mb = _get_memory_mb() # <--- Get memory before
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start_time = time.time()
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mem_delta_mb = None
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peak_mem_mb = start_mem_mb
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hook_manager = None
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try:
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urls = [('https://' + url) if not url.startswith(('http://', 'https://')) else url for url in urls]
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@@ -445,6 +447,19 @@ async def handle_crawl_request(
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# crawler: AsyncWebCrawler = AsyncWebCrawler(config=browser_config)
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# await crawler.start()
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# Attach hooks if provided
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hooks_status = {}
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if hooks_config:
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from hook_manager import attach_user_hooks_to_crawler, UserHookManager
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hook_manager = UserHookManager(timeout=hooks_config.get('timeout', 30))
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hooks_status, hook_manager = await attach_user_hooks_to_crawler(
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crawler,
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hooks_config.get('code', {}),
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timeout=hooks_config.get('timeout', 30),
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hook_manager=hook_manager
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)
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logger.info(f"Hooks attachment status: {hooks_status['status']}")
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base_config = config["crawler"]["base_config"]
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# Iterate on key-value pairs in global_config then use haseattr to set them
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for key, value in base_config.items():
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@@ -459,6 +474,10 @@ async def handle_crawl_request(
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dispatcher=dispatcher)
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results = await partial_func()
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# Ensure results is always a list
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if not isinstance(results, list):
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results = [results]
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# await crawler.close()
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end_mem_mb = _get_memory_mb() # <--- Get memory after
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@@ -472,13 +491,35 @@ async def handle_crawl_request(
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# Process results to handle PDF bytes
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processed_results = []
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for result in results:
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try:
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# Check if result has model_dump method (is a proper CrawlResult)
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if hasattr(result, 'model_dump'):
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result_dict = result.model_dump()
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# If PDF exists, encode it to base64
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if result_dict.get('pdf') is not None:
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result_dict['pdf'] = b64encode(result_dict['pdf']).decode('utf-8')
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processed_results.append(result_dict)
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elif isinstance(result, dict):
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result_dict = result
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else:
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# Handle unexpected result type
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logger.warning(f"Unexpected result type: {type(result)}")
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result_dict = {
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"url": str(result) if hasattr(result, '__str__') else "unknown",
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"success": False,
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"error_message": f"Unexpected result type: {type(result).__name__}"
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}
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return {
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# If PDF exists, encode it to base64
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if result_dict.get('pdf') is not None and isinstance(result_dict.get('pdf'), bytes):
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result_dict['pdf'] = b64encode(result_dict['pdf']).decode('utf-8')
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processed_results.append(result_dict)
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except Exception as e:
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logger.error(f"Error processing result: {e}")
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processed_results.append({
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"url": "unknown",
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"success": False,
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"error_message": str(e)
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})
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response = {
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"success": True,
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"results": processed_results,
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"server_processing_time_s": end_time - start_time,
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@@ -486,6 +527,33 @@ async def handle_crawl_request(
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"server_peak_memory_mb": peak_mem_mb
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}
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# Add hooks information if hooks were used
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if hooks_config and hook_manager:
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from hook_manager import UserHookManager
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if isinstance(hook_manager, UserHookManager):
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try:
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# Ensure all hook data is JSON serializable
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import json
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hook_data = {
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"status": hooks_status,
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"execution_log": hook_manager.execution_log,
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"errors": hook_manager.errors,
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"summary": hook_manager.get_summary()
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}
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# Test that it's serializable
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json.dumps(hook_data)
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response["hooks"] = hook_data
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except (TypeError, ValueError) as e:
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logger.error(f"Hook data not JSON serializable: {e}")
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response["hooks"] = {
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"status": {"status": "error", "message": "Hook data serialization failed"},
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"execution_log": [],
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"errors": [{"error": str(e)}],
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"summary": {}
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}
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return response
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except Exception as e:
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logger.error(f"Crawl error: {str(e)}", exc_info=True)
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if 'crawler' in locals() and crawler.ready: # Check if crawler was initialized and started
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@@ -513,9 +581,11 @@ async def handle_stream_crawl_request(
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urls: List[str],
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browser_config: dict,
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crawler_config: dict,
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config: dict
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) -> Tuple[AsyncWebCrawler, AsyncGenerator]:
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"""Handle streaming crawl requests."""
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config: dict,
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hooks_config: Optional[dict] = None
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) -> Tuple[AsyncWebCrawler, AsyncGenerator, Optional[Dict]]:
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"""Handle streaming crawl requests with optional hooks."""
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hooks_info = None
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try:
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browser_config = BrowserConfig.load(browser_config)
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# browser_config.verbose = True # Set to False or remove for production stress testing
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@@ -537,13 +607,27 @@ async def handle_stream_crawl_request(
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# crawler = AsyncWebCrawler(config=browser_config)
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# await crawler.start()
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# Attach hooks if provided
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if hooks_config:
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from hook_manager import attach_user_hooks_to_crawler, UserHookManager
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hook_manager = UserHookManager(timeout=hooks_config.get('timeout', 30))
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hooks_status, hook_manager = await attach_user_hooks_to_crawler(
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crawler,
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hooks_config.get('code', {}),
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timeout=hooks_config.get('timeout', 30),
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hook_manager=hook_manager
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)
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logger.info(f"Hooks attachment status for streaming: {hooks_status['status']}")
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# Include hook manager in hooks_info for proper tracking
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hooks_info = {'status': hooks_status, 'manager': hook_manager}
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results_gen = await crawler.arun_many(
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urls=urls,
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config=crawler_config,
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dispatcher=dispatcher
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)
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return crawler, results_gen
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return crawler, results_gen, hooks_info
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except Exception as e:
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# Make sure to close crawler if started during an error here
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512
deploy/docker/hook_manager.py
Normal file
512
deploy/docker/hook_manager.py
Normal file
@@ -0,0 +1,512 @@
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"""
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Hook Manager for User-Provided Hook Functions
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Handles validation, compilation, and safe execution of user-provided hook code
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"""
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import ast
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import asyncio
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import traceback
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from typing import Dict, Callable, Optional, Tuple, List, Any
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import logging
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logger = logging.getLogger(__name__)
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class UserHookManager:
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"""Manages user-provided hook functions with error isolation"""
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# Expected signatures for each hook point
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HOOK_SIGNATURES = {
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"on_browser_created": ["browser"],
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"on_page_context_created": ["page", "context"],
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"before_goto": ["page", "context", "url"],
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"after_goto": ["page", "context", "url", "response"],
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"on_user_agent_updated": ["page", "context", "user_agent"],
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"on_execution_started": ["page", "context"],
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"before_retrieve_html": ["page", "context"],
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"before_return_html": ["page", "context", "html"]
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}
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# Default timeout for hook execution (in seconds)
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DEFAULT_TIMEOUT = 30
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def __init__(self, timeout: int = DEFAULT_TIMEOUT):
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self.timeout = timeout
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self.errors: List[Dict[str, Any]] = []
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self.compiled_hooks: Dict[str, Callable] = {}
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self.execution_log: List[Dict[str, Any]] = []
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def validate_hook_structure(self, hook_code: str, hook_point: str) -> Tuple[bool, str]:
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"""
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Validate the structure of user-provided hook code
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Args:
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hook_code: The Python code string containing the hook function
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hook_point: The hook point name (e.g., 'on_page_context_created')
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Returns:
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Tuple of (is_valid, error_message)
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"""
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try:
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# Parse the code
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tree = ast.parse(hook_code)
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# Check if it's empty
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if not tree.body:
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return False, "Hook code is empty"
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# Find the function definition
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func_def = None
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for node in tree.body:
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if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef)):
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func_def = node
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break
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if not func_def:
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return False, "Hook must contain a function definition (def or async def)"
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# Check if it's async (all hooks should be async)
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if not isinstance(func_def, ast.AsyncFunctionDef):
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return False, f"Hook function must be async (use 'async def' instead of 'def')"
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# Get function name for better error messages
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func_name = func_def.name
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# Validate parameters
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expected_params = self.HOOK_SIGNATURES.get(hook_point, [])
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if not expected_params:
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return False, f"Unknown hook point: {hook_point}"
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func_params = [arg.arg for arg in func_def.args.args]
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# Check if it has **kwargs for flexibility
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has_kwargs = func_def.args.kwarg is not None
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# Must have at least the expected parameters
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missing_params = []
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for expected in expected_params:
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if expected not in func_params:
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missing_params.append(expected)
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if missing_params and not has_kwargs:
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return False, f"Hook function '{func_name}' must accept parameters: {', '.join(expected_params)} (missing: {', '.join(missing_params)})"
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# Check if it returns something (should return page or browser)
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has_return = any(isinstance(node, ast.Return) for node in ast.walk(func_def))
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if not has_return:
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# Warning, not error - we'll handle this
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logger.warning(f"Hook function '{func_name}' should return the {expected_params[0]} object")
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return True, "Valid"
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except SyntaxError as e:
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return False, f"Syntax error at line {e.lineno}: {str(e)}"
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except Exception as e:
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return False, f"Failed to parse hook code: {str(e)}"
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def compile_hook(self, hook_code: str, hook_point: str) -> Optional[Callable]:
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"""
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Compile user-provided hook code into a callable function
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Args:
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hook_code: The Python code string
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hook_point: The hook point name
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Returns:
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Compiled function or None if compilation failed
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"""
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try:
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# Create a safe namespace for the hook
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# Use a more complete builtins that includes __import__
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import builtins
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safe_builtins = {}
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# Add safe built-in functions
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allowed_builtins = [
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'print', 'len', 'str', 'int', 'float', 'bool',
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'list', 'dict', 'set', 'tuple', 'range', 'enumerate',
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'zip', 'map', 'filter', 'any', 'all', 'sum', 'min', 'max',
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'sorted', 'reversed', 'abs', 'round', 'isinstance', 'type',
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'getattr', 'hasattr', 'setattr', 'callable', 'iter', 'next',
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'__import__', '__build_class__' # Required for exec
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]
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for name in allowed_builtins:
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if hasattr(builtins, name):
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safe_builtins[name] = getattr(builtins, name)
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namespace = {
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'__name__': f'user_hook_{hook_point}',
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'__builtins__': safe_builtins
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}
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# Add commonly needed imports
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exec("import asyncio", namespace)
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exec("import json", namespace)
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exec("import re", namespace)
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exec("from typing import Dict, List, Optional", namespace)
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# Execute the code to define the function
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exec(hook_code, namespace)
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# Find the async function in the namespace
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for name, obj in namespace.items():
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if callable(obj) and not name.startswith('_') and asyncio.iscoroutinefunction(obj):
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return obj
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# If no async function found, look for any function
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for name, obj in namespace.items():
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if callable(obj) and not name.startswith('_'):
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logger.warning(f"Found non-async function '{name}' - wrapping it")
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# Wrap sync function in async
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async def async_wrapper(*args, **kwargs):
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return obj(*args, **kwargs)
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return async_wrapper
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raise ValueError("No callable function found in hook code")
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except Exception as e:
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error = {
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'hook_point': hook_point,
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'error': f"Failed to compile hook: {str(e)}",
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'type': 'compilation_error',
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'traceback': traceback.format_exc()
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}
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self.errors.append(error)
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logger.error(f"Hook compilation failed for {hook_point}: {str(e)}")
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return None
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async def execute_hook_safely(
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self,
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hook_func: Callable,
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hook_point: str,
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*args,
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**kwargs
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) -> Tuple[Any, Optional[Dict]]:
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"""
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Execute a user hook with error isolation and timeout
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Args:
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hook_func: The compiled hook function
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hook_point: The hook point name
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*args, **kwargs: Arguments to pass to the hook
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Returns:
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Tuple of (result, error_dict)
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"""
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start_time = asyncio.get_event_loop().time()
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try:
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# Add timeout to prevent infinite loops
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result = await asyncio.wait_for(
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hook_func(*args, **kwargs),
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timeout=self.timeout
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)
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# Log successful execution
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execution_time = asyncio.get_event_loop().time() - start_time
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self.execution_log.append({
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'hook_point': hook_point,
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'status': 'success',
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'execution_time': execution_time,
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'timestamp': start_time
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})
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return result, None
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except asyncio.TimeoutError:
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error = {
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'hook_point': hook_point,
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'error': f'Hook execution timed out ({self.timeout}s limit)',
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'type': 'timeout',
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'execution_time': self.timeout
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}
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self.errors.append(error)
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self.execution_log.append({
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'hook_point': hook_point,
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'status': 'timeout',
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'error': error['error'],
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'execution_time': self.timeout,
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'timestamp': start_time
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})
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# Return the first argument (usually page/browser) to continue
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return args[0] if args else None, error
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except Exception as e:
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execution_time = asyncio.get_event_loop().time() - start_time
|
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error = {
|
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'hook_point': hook_point,
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'error': str(e),
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'type': type(e).__name__,
|
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'traceback': traceback.format_exc(),
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'execution_time': execution_time
|
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}
|
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self.errors.append(error)
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self.execution_log.append({
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'hook_point': hook_point,
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'status': 'failed',
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||||
'error': str(e),
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'error_type': type(e).__name__,
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||||
'execution_time': execution_time,
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'timestamp': start_time
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})
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# Return the first argument (usually page/browser) to continue
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return args[0] if args else None, error
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|
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def get_summary(self) -> Dict[str, Any]:
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"""Get a summary of hook execution"""
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total_hooks = len(self.execution_log)
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successful = sum(1 for log in self.execution_log if log['status'] == 'success')
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failed = sum(1 for log in self.execution_log if log['status'] == 'failed')
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timed_out = sum(1 for log in self.execution_log if log['status'] == 'timeout')
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||||
|
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return {
|
||||
'total_executions': total_hooks,
|
||||
'successful': successful,
|
||||
'failed': failed,
|
||||
'timed_out': timed_out,
|
||||
'success_rate': (successful / total_hooks * 100) if total_hooks > 0 else 0,
|
||||
'total_errors': len(self.errors)
|
||||
}
|
||||
|
||||
|
||||
class IsolatedHookWrapper:
|
||||
"""Wraps user hooks with error isolation and reporting"""
|
||||
|
||||
def __init__(self, hook_manager: UserHookManager):
|
||||
self.hook_manager = hook_manager
|
||||
|
||||
def create_hook_wrapper(self, user_hook: Callable, hook_point: str) -> Callable:
|
||||
"""
|
||||
Create a wrapper that isolates hook errors from main process
|
||||
|
||||
Args:
|
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user_hook: The compiled user hook function
|
||||
hook_point: The hook point name
|
||||
|
||||
Returns:
|
||||
Wrapped async function that handles errors gracefully
|
||||
"""
|
||||
|
||||
async def wrapped_hook(*args, **kwargs):
|
||||
"""Wrapped hook with error isolation"""
|
||||
# Get the main return object (page/browser)
|
||||
# This ensures we always have something to return
|
||||
return_obj = None
|
||||
if args:
|
||||
return_obj = args[0]
|
||||
elif 'page' in kwargs:
|
||||
return_obj = kwargs['page']
|
||||
elif 'browser' in kwargs:
|
||||
return_obj = kwargs['browser']
|
||||
|
||||
try:
|
||||
# Execute user hook with safety
|
||||
result, error = await self.hook_manager.execute_hook_safely(
|
||||
user_hook,
|
||||
hook_point,
|
||||
*args,
|
||||
**kwargs
|
||||
)
|
||||
|
||||
if error:
|
||||
# Hook failed but we continue with original object
|
||||
logger.warning(f"User hook failed at {hook_point}: {error['error']}")
|
||||
return return_obj
|
||||
|
||||
# Hook succeeded - return its result or the original object
|
||||
if result is None:
|
||||
logger.debug(f"Hook at {hook_point} returned None, using original object")
|
||||
return return_obj
|
||||
|
||||
return result
|
||||
|
||||
except Exception as e:
|
||||
# This should rarely happen due to execute_hook_safely
|
||||
logger.error(f"Unexpected error in hook wrapper for {hook_point}: {e}")
|
||||
return return_obj
|
||||
|
||||
# Set function name for debugging
|
||||
wrapped_hook.__name__ = f"wrapped_{hook_point}"
|
||||
return wrapped_hook
|
||||
|
||||
|
||||
async def process_user_hooks(
|
||||
hooks_input: Dict[str, str],
|
||||
timeout: int = 30
|
||||
) -> Tuple[Dict[str, Callable], List[Dict], UserHookManager]:
|
||||
"""
|
||||
Process and compile user-provided hook functions
|
||||
|
||||
Args:
|
||||
hooks_input: Dictionary mapping hook points to code strings
|
||||
timeout: Timeout for each hook execution
|
||||
|
||||
Returns:
|
||||
Tuple of (compiled_hooks, validation_errors, hook_manager)
|
||||
"""
|
||||
|
||||
hook_manager = UserHookManager(timeout=timeout)
|
||||
wrapper = IsolatedHookWrapper(hook_manager)
|
||||
compiled_hooks = {}
|
||||
validation_errors = []
|
||||
|
||||
for hook_point, hook_code in hooks_input.items():
|
||||
# Skip empty hooks
|
||||
if not hook_code or not hook_code.strip():
|
||||
continue
|
||||
|
||||
# Validate hook point
|
||||
if hook_point not in UserHookManager.HOOK_SIGNATURES:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': f'Unknown hook point. Valid points: {", ".join(UserHookManager.HOOK_SIGNATURES.keys())}',
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
continue
|
||||
|
||||
# Validate structure
|
||||
is_valid, message = hook_manager.validate_hook_structure(hook_code, hook_point)
|
||||
if not is_valid:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': message,
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
continue
|
||||
|
||||
# Compile the hook
|
||||
hook_func = hook_manager.compile_hook(hook_code, hook_point)
|
||||
if hook_func:
|
||||
# Wrap with error isolation
|
||||
wrapped_hook = wrapper.create_hook_wrapper(hook_func, hook_point)
|
||||
compiled_hooks[hook_point] = wrapped_hook
|
||||
logger.info(f"Successfully compiled hook for {hook_point}")
|
||||
else:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': 'Failed to compile hook function - check syntax and structure',
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
|
||||
return compiled_hooks, validation_errors, hook_manager
|
||||
|
||||
|
||||
async def process_user_hooks_with_manager(
|
||||
hooks_input: Dict[str, str],
|
||||
hook_manager: UserHookManager
|
||||
) -> Tuple[Dict[str, Callable], List[Dict]]:
|
||||
"""
|
||||
Process and compile user-provided hook functions with existing manager
|
||||
|
||||
Args:
|
||||
hooks_input: Dictionary mapping hook points to code strings
|
||||
hook_manager: Existing UserHookManager instance
|
||||
|
||||
Returns:
|
||||
Tuple of (compiled_hooks, validation_errors)
|
||||
"""
|
||||
|
||||
wrapper = IsolatedHookWrapper(hook_manager)
|
||||
compiled_hooks = {}
|
||||
validation_errors = []
|
||||
|
||||
for hook_point, hook_code in hooks_input.items():
|
||||
# Skip empty hooks
|
||||
if not hook_code or not hook_code.strip():
|
||||
continue
|
||||
|
||||
# Validate hook point
|
||||
if hook_point not in UserHookManager.HOOK_SIGNATURES:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': f'Unknown hook point. Valid points: {", ".join(UserHookManager.HOOK_SIGNATURES.keys())}',
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
continue
|
||||
|
||||
# Validate structure
|
||||
is_valid, message = hook_manager.validate_hook_structure(hook_code, hook_point)
|
||||
if not is_valid:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': message,
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
continue
|
||||
|
||||
# Compile the hook
|
||||
hook_func = hook_manager.compile_hook(hook_code, hook_point)
|
||||
if hook_func:
|
||||
# Wrap with error isolation
|
||||
wrapped_hook = wrapper.create_hook_wrapper(hook_func, hook_point)
|
||||
compiled_hooks[hook_point] = wrapped_hook
|
||||
logger.info(f"Successfully compiled hook for {hook_point}")
|
||||
else:
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': 'Failed to compile hook function - check syntax and structure',
|
||||
'code_preview': hook_code[:100] + '...' if len(hook_code) > 100 else hook_code
|
||||
})
|
||||
|
||||
return compiled_hooks, validation_errors
|
||||
|
||||
|
||||
async def attach_user_hooks_to_crawler(
|
||||
crawler, # AsyncWebCrawler instance
|
||||
user_hooks: Dict[str, str],
|
||||
timeout: int = 30,
|
||||
hook_manager: Optional[UserHookManager] = None
|
||||
) -> Tuple[Dict[str, Any], UserHookManager]:
|
||||
"""
|
||||
Attach user-provided hooks to crawler with full error reporting
|
||||
|
||||
Args:
|
||||
crawler: AsyncWebCrawler instance
|
||||
user_hooks: Dictionary mapping hook points to code strings
|
||||
timeout: Timeout for each hook execution
|
||||
hook_manager: Optional existing UserHookManager instance
|
||||
|
||||
Returns:
|
||||
Tuple of (status_dict, hook_manager)
|
||||
"""
|
||||
|
||||
# Use provided hook_manager or create a new one
|
||||
if hook_manager is None:
|
||||
hook_manager = UserHookManager(timeout=timeout)
|
||||
|
||||
# Process hooks with the hook_manager
|
||||
compiled_hooks, validation_errors = await process_user_hooks_with_manager(
|
||||
user_hooks, hook_manager
|
||||
)
|
||||
|
||||
# Log validation errors
|
||||
if validation_errors:
|
||||
logger.warning(f"Hook validation errors: {validation_errors}")
|
||||
|
||||
# Attach successfully compiled hooks
|
||||
attached_hooks = []
|
||||
for hook_point, wrapped_hook in compiled_hooks.items():
|
||||
try:
|
||||
crawler.crawler_strategy.set_hook(hook_point, wrapped_hook)
|
||||
attached_hooks.append(hook_point)
|
||||
logger.info(f"Attached hook to {hook_point}")
|
||||
except Exception as e:
|
||||
logger.error(f"Failed to attach hook to {hook_point}: {e}")
|
||||
validation_errors.append({
|
||||
'hook_point': hook_point,
|
||||
'error': f'Failed to attach hook: {str(e)}'
|
||||
})
|
||||
|
||||
status = 'success' if not validation_errors else ('partial' if attached_hooks else 'failed')
|
||||
|
||||
status_dict = {
|
||||
'status': status,
|
||||
'attached_hooks': attached_hooks,
|
||||
'validation_errors': validation_errors,
|
||||
'total_hooks_provided': len(user_hooks),
|
||||
'successfully_attached': len(attached_hooks),
|
||||
'failed_validation': len(validation_errors)
|
||||
}
|
||||
|
||||
return status_dict, hook_manager
|
||||
@@ -9,6 +9,50 @@ class CrawlRequest(BaseModel):
|
||||
browser_config: Optional[Dict] = Field(default_factory=dict)
|
||||
crawler_config: Optional[Dict] = Field(default_factory=dict)
|
||||
|
||||
|
||||
class HookConfig(BaseModel):
|
||||
"""Configuration for user-provided hooks"""
|
||||
code: Dict[str, str] = Field(
|
||||
default_factory=dict,
|
||||
description="Map of hook points to Python code strings"
|
||||
)
|
||||
timeout: int = Field(
|
||||
default=30,
|
||||
ge=1,
|
||||
le=120,
|
||||
description="Timeout in seconds for each hook execution"
|
||||
)
|
||||
|
||||
class Config:
|
||||
schema_extra = {
|
||||
"example": {
|
||||
"code": {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Block images to speed up crawling
|
||||
await context.route("**/*.{png,jpg,jpeg,gif}", lambda route: route.abort())
|
||||
return page
|
||||
""",
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Scroll to load lazy content
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
await page.wait_for_timeout(2000)
|
||||
return page
|
||||
"""
|
||||
},
|
||||
"timeout": 30
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
class CrawlRequestWithHooks(CrawlRequest):
|
||||
"""Extended crawl request with hooks support"""
|
||||
hooks: Optional[HookConfig] = Field(
|
||||
default=None,
|
||||
description="Optional user-provided hook functions"
|
||||
)
|
||||
|
||||
class MarkdownRequest(BaseModel):
|
||||
"""Request body for the /md endpoint."""
|
||||
url: str = Field(..., description="Absolute http/https URL to fetch")
|
||||
|
||||
@@ -23,7 +23,7 @@ from api import (
|
||||
stream_results
|
||||
)
|
||||
from schemas import (
|
||||
CrawlRequest,
|
||||
CrawlRequestWithHooks,
|
||||
MarkdownRequest,
|
||||
RawCode,
|
||||
HTMLRequest,
|
||||
@@ -414,6 +414,72 @@ async def get_schema():
|
||||
"crawler": CrawlerRunConfig().dump()}
|
||||
|
||||
|
||||
@app.get("/hooks/info")
|
||||
async def get_hooks_info():
|
||||
"""Get information about available hook points and their signatures"""
|
||||
from hook_manager import UserHookManager
|
||||
|
||||
hook_info = {}
|
||||
for hook_point, params in UserHookManager.HOOK_SIGNATURES.items():
|
||||
hook_info[hook_point] = {
|
||||
"parameters": params,
|
||||
"description": get_hook_description(hook_point),
|
||||
"example": get_hook_example(hook_point)
|
||||
}
|
||||
|
||||
return JSONResponse({
|
||||
"available_hooks": hook_info,
|
||||
"timeout_limits": {
|
||||
"min": 1,
|
||||
"max": 120,
|
||||
"default": 30
|
||||
}
|
||||
})
|
||||
|
||||
|
||||
def get_hook_description(hook_point: str) -> str:
|
||||
"""Get description for each hook point"""
|
||||
descriptions = {
|
||||
"on_browser_created": "Called after browser instance is created",
|
||||
"on_page_context_created": "Called after page and context are created - ideal for authentication",
|
||||
"before_goto": "Called before navigating to the target URL",
|
||||
"after_goto": "Called after navigation is complete",
|
||||
"on_user_agent_updated": "Called when user agent is updated",
|
||||
"on_execution_started": "Called when custom JavaScript execution begins",
|
||||
"before_retrieve_html": "Called before retrieving the final HTML - ideal for scrolling",
|
||||
"before_return_html": "Called just before returning the HTML content"
|
||||
}
|
||||
return descriptions.get(hook_point, "")
|
||||
|
||||
|
||||
def get_hook_example(hook_point: str) -> str:
|
||||
"""Get example code for each hook point"""
|
||||
examples = {
|
||||
"on_page_context_created": """async def hook(page, context, **kwargs):
|
||||
# Add authentication cookie
|
||||
await context.add_cookies([{
|
||||
'name': 'session',
|
||||
'value': 'my-session-id',
|
||||
'domain': '.example.com'
|
||||
}])
|
||||
return page""",
|
||||
|
||||
"before_retrieve_html": """async def hook(page, context, **kwargs):
|
||||
# Scroll to load lazy content
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
await page.wait_for_timeout(2000)
|
||||
return page""",
|
||||
|
||||
"before_goto": """async def hook(page, context, url, **kwargs):
|
||||
# Set custom headers
|
||||
await page.set_extra_http_headers({
|
||||
'X-Custom-Header': 'value'
|
||||
})
|
||||
return page"""
|
||||
}
|
||||
return examples.get(hook_point, "# Implement your hook logic here\nreturn page")
|
||||
|
||||
|
||||
@app.get(config["observability"]["health_check"]["endpoint"])
|
||||
async def health():
|
||||
return {"status": "ok", "timestamp": time.time(), "version": __version__}
|
||||
@@ -429,19 +495,30 @@ async def metrics():
|
||||
@mcp_tool("crawl")
|
||||
async def crawl(
|
||||
request: Request,
|
||||
crawl_request: CrawlRequest,
|
||||
crawl_request: CrawlRequestWithHooks,
|
||||
_td: Dict = Depends(token_dep),
|
||||
):
|
||||
"""
|
||||
Crawl a list of URLs and return the results as JSON.
|
||||
Supports optional user-provided hook functions for customization.
|
||||
"""
|
||||
if not crawl_request.urls:
|
||||
raise HTTPException(400, "At least one URL required")
|
||||
|
||||
# Prepare hooks config if provided
|
||||
hooks_config = None
|
||||
if crawl_request.hooks:
|
||||
hooks_config = {
|
||||
'code': crawl_request.hooks.code,
|
||||
'timeout': crawl_request.hooks.timeout
|
||||
}
|
||||
|
||||
res = await handle_crawl_request(
|
||||
urls=crawl_request.urls,
|
||||
browser_config=crawl_request.browser_config,
|
||||
crawler_config=crawl_request.crawler_config,
|
||||
config=config,
|
||||
hooks_config=hooks_config
|
||||
)
|
||||
return JSONResponse(res)
|
||||
|
||||
@@ -450,25 +527,42 @@ async def crawl(
|
||||
@limiter.limit(config["rate_limiting"]["default_limit"])
|
||||
async def crawl_stream(
|
||||
request: Request,
|
||||
crawl_request: CrawlRequest,
|
||||
crawl_request: CrawlRequestWithHooks,
|
||||
_td: Dict = Depends(token_dep),
|
||||
):
|
||||
if not crawl_request.urls:
|
||||
raise HTTPException(400, "At least one URL required")
|
||||
crawler, gen = await handle_stream_crawl_request(
|
||||
|
||||
# Prepare hooks config if provided
|
||||
hooks_config = None
|
||||
if crawl_request.hooks:
|
||||
hooks_config = {
|
||||
'code': crawl_request.hooks.code,
|
||||
'timeout': crawl_request.hooks.timeout
|
||||
}
|
||||
|
||||
crawler, gen, hooks_info = await handle_stream_crawl_request(
|
||||
urls=crawl_request.urls,
|
||||
browser_config=crawl_request.browser_config,
|
||||
crawler_config=crawl_request.crawler_config,
|
||||
config=config,
|
||||
hooks_config=hooks_config
|
||||
)
|
||||
return StreamingResponse(
|
||||
stream_results(crawler, gen),
|
||||
media_type="application/x-ndjson",
|
||||
|
||||
# Add hooks info to response headers if available
|
||||
headers = {
|
||||
"Cache-Control": "no-cache",
|
||||
"Connection": "keep-alive",
|
||||
"X-Stream-Status": "active",
|
||||
},
|
||||
}
|
||||
if hooks_info:
|
||||
import json
|
||||
headers["X-Hooks-Status"] = json.dumps(hooks_info['status']['status'])
|
||||
|
||||
return StreamingResponse(
|
||||
stream_results(crawler, gen),
|
||||
media_type="application/x-ndjson",
|
||||
headers=headers,
|
||||
)
|
||||
|
||||
|
||||
|
||||
513
docs/examples/docker_hooks_examples.py
Normal file
513
docs/examples/docker_hooks_examples.py
Normal file
@@ -0,0 +1,513 @@
|
||||
#!/usr/bin/env python3
|
||||
"""
|
||||
Comprehensive test demonstrating all hook types from hooks_example.py
|
||||
adapted for the Docker API with real URLs
|
||||
"""
|
||||
|
||||
import requests
|
||||
import json
|
||||
import time
|
||||
from typing import Dict, Any
|
||||
|
||||
# API_BASE_URL = "http://localhost:11234"
|
||||
API_BASE_URL = "http://localhost:11235"
|
||||
|
||||
|
||||
def test_all_hooks_demo():
|
||||
"""Demonstrate all 8 hook types with practical examples"""
|
||||
print("=" * 70)
|
||||
print("Testing: All Hooks Comprehensive Demo")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_browser_created": """
|
||||
async def hook(browser, **kwargs):
|
||||
# Hook called after browser is created
|
||||
print("[HOOK] on_browser_created - Browser is ready!")
|
||||
# Browser-level configurations would go here
|
||||
return browser
|
||||
""",
|
||||
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called after a new page and context are created
|
||||
print("[HOOK] on_page_context_created - New page created!")
|
||||
|
||||
# Set viewport size for consistent rendering
|
||||
await page.set_viewport_size({"width": 1920, "height": 1080})
|
||||
|
||||
# Add cookies for the session (using httpbin.org domain)
|
||||
await context.add_cookies([
|
||||
{
|
||||
"name": "test_session",
|
||||
"value": "abc123xyz",
|
||||
"domain": ".httpbin.org",
|
||||
"path": "/",
|
||||
"httpOnly": True,
|
||||
"secure": True
|
||||
}
|
||||
])
|
||||
|
||||
# Block ads and tracking scripts to speed up crawling
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp,svg}", lambda route: route.abort())
|
||||
await context.route("**/analytics/*", lambda route: route.abort())
|
||||
await context.route("**/ads/*", lambda route: route.abort())
|
||||
|
||||
print("[HOOK] Viewport set, cookies added, and ads blocked")
|
||||
return page
|
||||
""",
|
||||
|
||||
"on_user_agent_updated": """
|
||||
async def hook(page, context, user_agent, **kwargs):
|
||||
# Hook called when user agent is updated
|
||||
print(f"[HOOK] on_user_agent_updated - User agent: {user_agent[:50]}...")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
# Hook called before navigating to each URL
|
||||
print(f"[HOOK] before_goto - About to visit: {url}")
|
||||
|
||||
# Add custom headers for the request
|
||||
await page.set_extra_http_headers({
|
||||
"X-Custom-Header": "crawl4ai-test",
|
||||
"Accept-Language": "en-US,en;q=0.9",
|
||||
"DNT": "1"
|
||||
})
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"after_goto": """
|
||||
async def hook(page, context, url, response, **kwargs):
|
||||
# Hook called after navigating to each URL
|
||||
print(f"[HOOK] after_goto - Successfully loaded: {url}")
|
||||
|
||||
# Wait a moment for dynamic content to load
|
||||
await page.wait_for_timeout(1000)
|
||||
|
||||
# Check if specific elements exist (with error handling)
|
||||
try:
|
||||
# For httpbin.org, wait for body element
|
||||
await page.wait_for_selector("body", timeout=2000)
|
||||
print("[HOOK] Body element found and loaded")
|
||||
except:
|
||||
print("[HOOK] Timeout waiting for body, continuing anyway")
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"on_execution_started": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called after custom JavaScript execution
|
||||
print("[HOOK] on_execution_started - Custom JS executed!")
|
||||
|
||||
# You could inject additional JavaScript here if needed
|
||||
await page.evaluate("console.log('[INJECTED] Hook JS running');")
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called before retrieving the HTML content
|
||||
print("[HOOK] before_retrieve_html - Preparing to get HTML")
|
||||
|
||||
# Scroll to bottom to trigger lazy loading
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight);")
|
||||
await page.wait_for_timeout(500)
|
||||
|
||||
# Scroll back to top
|
||||
await page.evaluate("window.scrollTo(0, 0);")
|
||||
await page.wait_for_timeout(500)
|
||||
|
||||
# One more scroll to middle for good measure
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight / 2);")
|
||||
|
||||
print("[HOOK] Scrolling completed for lazy-loaded content")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_return_html": """
|
||||
async def hook(page, context, html, **kwargs):
|
||||
# Hook called before returning the HTML content
|
||||
print(f"[HOOK] before_return_html - HTML length: {len(html)} characters")
|
||||
|
||||
# Log some page metrics
|
||||
metrics = await page.evaluate('''() => {
|
||||
return {
|
||||
images: document.images.length,
|
||||
links: document.links.length,
|
||||
scripts: document.scripts.length
|
||||
}
|
||||
}''')
|
||||
|
||||
print(f"[HOOK] Page metrics - Images: {metrics['images']}, Links: {metrics['links']}, Scripts: {metrics['scripts']}")
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
# Create request payload
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 30
|
||||
},
|
||||
"crawler_config": {
|
||||
"js_code": "window.scrollTo(0, document.body.scrollHeight);",
|
||||
"wait_for": "body",
|
||||
"cache_mode": "bypass"
|
||||
}
|
||||
}
|
||||
|
||||
print("\nSending request with all 8 hooks...")
|
||||
start_time = time.time()
|
||||
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
elapsed_time = time.time() - start_time
|
||||
print(f"Request completed in {elapsed_time:.2f} seconds")
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("\n✅ Request successful!")
|
||||
|
||||
# Check hooks execution
|
||||
if 'hooks' in data:
|
||||
hooks_info = data['hooks']
|
||||
print("\n📊 Hooks Execution Summary:")
|
||||
print(f" Status: {hooks_info['status']['status']}")
|
||||
print(f" Attached hooks: {len(hooks_info['status']['attached_hooks'])}")
|
||||
|
||||
for hook_name in hooks_info['status']['attached_hooks']:
|
||||
print(f" ✓ {hook_name}")
|
||||
|
||||
if 'summary' in hooks_info:
|
||||
summary = hooks_info['summary']
|
||||
print(f"\n📈 Execution Statistics:")
|
||||
print(f" Total executions: {summary['total_executions']}")
|
||||
print(f" Successful: {summary['successful']}")
|
||||
print(f" Failed: {summary['failed']}")
|
||||
print(f" Timed out: {summary['timed_out']}")
|
||||
print(f" Success rate: {summary['success_rate']:.1f}%")
|
||||
|
||||
if hooks_info.get('execution_log'):
|
||||
print(f"\n📝 Execution Log:")
|
||||
for log_entry in hooks_info['execution_log']:
|
||||
status_icon = "✅" if log_entry['status'] == 'success' else "❌"
|
||||
exec_time = log_entry.get('execution_time', 0)
|
||||
print(f" {status_icon} {log_entry['hook_point']}: {exec_time:.3f}s")
|
||||
|
||||
# Check crawl results
|
||||
if 'results' in data and len(data['results']) > 0:
|
||||
print(f"\n📄 Crawl Results:")
|
||||
for result in data['results']:
|
||||
print(f" URL: {result['url']}")
|
||||
print(f" Success: {result.get('success', False)}")
|
||||
if result.get('html'):
|
||||
print(f" HTML length: {len(result['html'])} characters")
|
||||
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
try:
|
||||
error_data = response.json()
|
||||
print(f"Error details: {json.dumps(error_data, indent=2)}")
|
||||
except:
|
||||
print(f"Error text: {response.text[:500]}")
|
||||
|
||||
|
||||
def test_authentication_flow():
|
||||
"""Test a complete authentication flow with multiple hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Authentication Flow with Multiple Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Setting up authentication context")
|
||||
|
||||
# Add authentication cookies
|
||||
await context.add_cookies([
|
||||
{
|
||||
"name": "auth_token",
|
||||
"value": "fake_jwt_token_here",
|
||||
"domain": ".httpbin.org",
|
||||
"path": "/",
|
||||
"httpOnly": True,
|
||||
"secure": True
|
||||
}
|
||||
])
|
||||
|
||||
# Set localStorage items (for SPA authentication)
|
||||
await page.evaluate('''
|
||||
localStorage.setItem('user_id', '12345');
|
||||
localStorage.setItem('auth_time', new Date().toISOString());
|
||||
''')
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
print(f"[HOOK] Adding auth headers for {url}")
|
||||
|
||||
# Add Authorization header
|
||||
import base64
|
||||
credentials = base64.b64encode(b"user:passwd").decode('ascii')
|
||||
|
||||
await page.set_extra_http_headers({
|
||||
'Authorization': f'Basic {credentials}',
|
||||
'X-API-Key': 'test-api-key-123'
|
||||
})
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": [
|
||||
"https://httpbin.org/basic-auth/user/passwd"
|
||||
],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 15
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting authentication with httpbin endpoints...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Authentication test completed")
|
||||
|
||||
if 'results' in data:
|
||||
for i, result in enumerate(data['results']):
|
||||
print(f"\n URL {i+1}: {result['url']}")
|
||||
if result.get('success'):
|
||||
# Check for authentication success indicators
|
||||
html_content = result.get('html', '')
|
||||
if '"authenticated"' in html_content and 'true' in html_content:
|
||||
print(" ✅ Authentication successful! Basic auth worked.")
|
||||
else:
|
||||
print(" ⚠️ Page loaded but auth status unclear")
|
||||
else:
|
||||
print(f" ❌ Failed: {result.get('error_message', 'Unknown error')}")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def test_performance_optimization_hooks():
|
||||
"""Test hooks for performance optimization"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Performance Optimization Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Optimizing page for performance")
|
||||
|
||||
# Block resource-heavy content
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp,svg,ico}", lambda route: route.abort())
|
||||
await context.route("**/*.{woff,woff2,ttf,otf}", lambda route: route.abort())
|
||||
await context.route("**/*.{mp4,webm,ogg,mp3,wav}", lambda route: route.abort())
|
||||
await context.route("**/googletagmanager.com/*", lambda route: route.abort())
|
||||
await context.route("**/google-analytics.com/*", lambda route: route.abort())
|
||||
await context.route("**/doubleclick.net/*", lambda route: route.abort())
|
||||
await context.route("**/facebook.com/*", lambda route: route.abort())
|
||||
|
||||
# Disable animations and transitions
|
||||
await page.add_style_tag(content='''
|
||||
*, *::before, *::after {
|
||||
animation-duration: 0s !important;
|
||||
animation-delay: 0s !important;
|
||||
transition-duration: 0s !important;
|
||||
transition-delay: 0s !important;
|
||||
}
|
||||
''')
|
||||
|
||||
print("[HOOK] Performance optimizations applied")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Removing unnecessary elements before extraction")
|
||||
|
||||
# Remove ads, popups, and other unnecessary elements
|
||||
await page.evaluate('''() => {
|
||||
// Remove common ad containers
|
||||
const adSelectors = [
|
||||
'.ad', '.ads', '.advertisement', '[id*="ad-"]', '[class*="ad-"]',
|
||||
'.popup', '.modal', '.overlay', '.cookie-banner', '.newsletter-signup'
|
||||
];
|
||||
|
||||
adSelectors.forEach(selector => {
|
||||
document.querySelectorAll(selector).forEach(el => el.remove());
|
||||
});
|
||||
|
||||
// Remove script tags to clean up HTML
|
||||
document.querySelectorAll('script').forEach(el => el.remove());
|
||||
|
||||
// Remove style tags we don't need
|
||||
document.querySelectorAll('style').forEach(el => el.remove());
|
||||
}''')
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 10
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting performance optimization hooks...")
|
||||
start_time = time.time()
|
||||
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
elapsed_time = time.time() - start_time
|
||||
print(f"Request completed in {elapsed_time:.2f} seconds")
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Performance optimization test completed")
|
||||
|
||||
if 'results' in data and len(data['results']) > 0:
|
||||
result = data['results'][0]
|
||||
if result.get('html'):
|
||||
print(f" HTML size: {len(result['html'])} characters")
|
||||
print(" Resources blocked, ads removed, animations disabled")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def test_content_extraction_hooks():
|
||||
"""Test hooks for intelligent content extraction"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Content Extraction Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"after_goto": """
|
||||
async def hook(page, context, url, response, **kwargs):
|
||||
print(f"[HOOK] Waiting for dynamic content on {url}")
|
||||
|
||||
# Wait for any lazy-loaded content
|
||||
await page.wait_for_timeout(2000)
|
||||
|
||||
# Trigger any "Load More" buttons
|
||||
try:
|
||||
load_more = await page.query_selector('[class*="load-more"], [class*="show-more"], button:has-text("Load More")')
|
||||
if load_more:
|
||||
await load_more.click()
|
||||
await page.wait_for_timeout(1000)
|
||||
print("[HOOK] Clicked 'Load More' button")
|
||||
except:
|
||||
pass
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Extracting structured data")
|
||||
|
||||
# Extract metadata
|
||||
metadata = await page.evaluate('''() => {
|
||||
const getMeta = (name) => {
|
||||
const element = document.querySelector(`meta[name="${name}"], meta[property="${name}"]`);
|
||||
return element ? element.getAttribute('content') : null;
|
||||
};
|
||||
|
||||
return {
|
||||
title: document.title,
|
||||
description: getMeta('description') || getMeta('og:description'),
|
||||
author: getMeta('author'),
|
||||
keywords: getMeta('keywords'),
|
||||
ogTitle: getMeta('og:title'),
|
||||
ogImage: getMeta('og:image'),
|
||||
canonical: document.querySelector('link[rel="canonical"]')?.href,
|
||||
jsonLd: Array.from(document.querySelectorAll('script[type="application/ld+json"]'))
|
||||
.map(el => el.textContent).filter(Boolean)
|
||||
};
|
||||
}''')
|
||||
|
||||
print(f"[HOOK] Extracted metadata: {json.dumps(metadata, indent=2)}")
|
||||
|
||||
# Infinite scroll handling
|
||||
for i in range(3):
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight);")
|
||||
await page.wait_for_timeout(1000)
|
||||
print(f"[HOOK] Scroll iteration {i+1}/3")
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html", "https://httpbin.org/json"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 20
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting content extraction hooks...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Content extraction test completed")
|
||||
|
||||
if 'hooks' in data and 'summary' in data['hooks']:
|
||||
summary = data['hooks']['summary']
|
||||
print(f" Hooks executed: {summary['successful']}/{summary['total_executions']}")
|
||||
|
||||
if 'results' in data:
|
||||
for result in data['results']:
|
||||
print(f"\n URL: {result['url']}")
|
||||
print(f" Success: {result.get('success', False)}")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def main():
|
||||
"""Run comprehensive hook tests"""
|
||||
print("🔧 Crawl4AI Docker API - Comprehensive Hooks Testing")
|
||||
print("Based on docs/examples/hooks_example.py")
|
||||
print("=" * 70)
|
||||
|
||||
tests = [
|
||||
("All Hooks Demo", test_all_hooks_demo),
|
||||
("Authentication Flow", test_authentication_flow),
|
||||
("Performance Optimization", test_performance_optimization_hooks),
|
||||
("Content Extraction", test_content_extraction_hooks),
|
||||
]
|
||||
|
||||
for i, (name, test_func) in enumerate(tests, 1):
|
||||
print(f"\n📌 Test {i}/{len(tests)}: {name}")
|
||||
try:
|
||||
test_func()
|
||||
print(f"✅ {name} completed")
|
||||
except Exception as e:
|
||||
print(f"❌ {name} failed: {e}")
|
||||
import traceback
|
||||
traceback.print_exc()
|
||||
|
||||
print("\n" + "=" * 70)
|
||||
print("🎉 All comprehensive hook tests completed!")
|
||||
print("=" * 70)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
@@ -405,6 +405,409 @@ Executes JavaScript snippets on the specified URL and returns the full crawl res
|
||||
|
||||
---
|
||||
|
||||
## User-Provided Hooks API
|
||||
|
||||
The Docker API supports user-provided hook functions, allowing you to customize the crawling behavior by injecting your own Python code at specific points in the crawling pipeline. This powerful feature enables authentication, performance optimization, and custom content extraction without modifying the server code.
|
||||
|
||||
> ⚠️ **IMPORTANT SECURITY WARNING**:
|
||||
> - **Never use hooks with untrusted code or on untrusted websites**
|
||||
> - **Be extremely careful when crawling sites that might be phishing or malicious**
|
||||
> - **Hook code has access to page context and can interact with the website**
|
||||
> - **Always validate and sanitize any data extracted through hooks**
|
||||
> - **Never expose credentials or sensitive data in hook code**
|
||||
> - **Consider running the Docker container in an isolated network when testing**
|
||||
|
||||
### Hook Information Endpoint
|
||||
|
||||
```
|
||||
GET /hooks/info
|
||||
```
|
||||
|
||||
Returns information about available hook points and their signatures:
|
||||
|
||||
```bash
|
||||
curl http://localhost:11235/hooks/info
|
||||
```
|
||||
|
||||
### Available Hook Points
|
||||
|
||||
The API supports 8 hook points that match the local SDK:
|
||||
|
||||
| Hook Point | Parameters | Description | Best Use Cases |
|
||||
|------------|------------|-------------|----------------|
|
||||
| `on_browser_created` | `browser` | After browser instance creation | Light setup tasks |
|
||||
| `on_page_context_created` | `page, context` | After page/context creation | **Authentication, cookies, route blocking** |
|
||||
| `before_goto` | `page, context, url` | Before navigating to URL | Custom headers, logging |
|
||||
| `after_goto` | `page, context, url, response` | After navigation completes | Verification, waiting for elements |
|
||||
| `on_user_agent_updated` | `page, context, user_agent` | When user agent changes | UA-specific logic |
|
||||
| `on_execution_started` | `page, context` | When JS execution begins | JS-related setup |
|
||||
| `before_retrieve_html` | `page, context` | Before getting final HTML | **Scrolling, lazy loading** |
|
||||
| `before_return_html` | `page, context, html` | Before returning HTML | Final modifications, metrics |
|
||||
|
||||
### Using Hooks in Requests
|
||||
|
||||
Add hooks to any crawl request by including the `hooks` parameter:
|
||||
|
||||
```json
|
||||
{
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": {
|
||||
"hook_point_name": "async def hook(...): ...",
|
||||
"another_hook": "async def hook(...): ..."
|
||||
},
|
||||
"timeout": 30 // Optional, default 30 seconds (max 120)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Hook Examples with Real URLs
|
||||
|
||||
#### 1. Authentication with Cookies (GitHub)
|
||||
|
||||
```python
|
||||
import requests
|
||||
|
||||
# Example: Setting GitHub session cookie (use your actual session)
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Add authentication cookies for GitHub
|
||||
# WARNING: Never hardcode real credentials!
|
||||
await context.add_cookies([
|
||||
{
|
||||
'name': 'user_session',
|
||||
'value': 'your_github_session_token', # Replace with actual token
|
||||
'domain': '.github.com',
|
||||
'path': '/',
|
||||
'httpOnly': True,
|
||||
'secure': True,
|
||||
'sameSite': 'Lax'
|
||||
}
|
||||
])
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": ["https://github.com/settings/profile"], # Protected page
|
||||
"hooks": {"code": hooks_code, "timeout": 30}
|
||||
})
|
||||
```
|
||||
|
||||
#### 2. Basic Authentication (httpbin.org for testing)
|
||||
|
||||
```python
|
||||
# Safe testing with httpbin.org (a service designed for HTTP testing)
|
||||
hooks_code = {
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
import base64
|
||||
# httpbin.org/basic-auth expects username="user" and password="passwd"
|
||||
credentials = base64.b64encode(b"user:passwd").decode('ascii')
|
||||
|
||||
await page.set_extra_http_headers({
|
||||
'Authorization': f'Basic {credentials}'
|
||||
})
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": ["https://httpbin.org/basic-auth/user/passwd"],
|
||||
"hooks": {"code": hooks_code, "timeout": 15}
|
||||
})
|
||||
```
|
||||
|
||||
#### 3. Performance Optimization (News Sites)
|
||||
|
||||
```python
|
||||
# Example: Optimizing crawling of news sites like CNN or BBC
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Block images, fonts, and media to speed up crawling
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp,svg,ico}", lambda route: route.abort())
|
||||
await context.route("**/*.{woff,woff2,ttf,otf,eot}", lambda route: route.abort())
|
||||
await context.route("**/*.{mp4,webm,ogg,mp3,wav,flac}", lambda route: route.abort())
|
||||
|
||||
# Block common tracking and ad domains
|
||||
await context.route("**/googletagmanager.com/*", lambda route: route.abort())
|
||||
await context.route("**/google-analytics.com/*", lambda route: route.abort())
|
||||
await context.route("**/doubleclick.net/*", lambda route: route.abort())
|
||||
await context.route("**/facebook.com/tr/*", lambda route: route.abort())
|
||||
await context.route("**/amazon-adsystem.com/*", lambda route: route.abort())
|
||||
|
||||
# Disable CSS animations for faster rendering
|
||||
await page.add_style_tag(content='''
|
||||
*, *::before, *::after {
|
||||
animation-duration: 0s !important;
|
||||
transition-duration: 0s !important;
|
||||
}
|
||||
''')
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": ["https://www.bbc.com/news"], # Heavy news site
|
||||
"hooks": {"code": hooks_code, "timeout": 30}
|
||||
})
|
||||
```
|
||||
|
||||
#### 4. Handling Infinite Scroll (Twitter/X)
|
||||
|
||||
```python
|
||||
# Example: Scrolling on Twitter/X (requires authentication)
|
||||
hooks_code = {
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Scroll to load more tweets
|
||||
previous_height = 0
|
||||
for i in range(5): # Limit scrolls to avoid infinite loop
|
||||
current_height = await page.evaluate("document.body.scrollHeight")
|
||||
if current_height == previous_height:
|
||||
break # No more content to load
|
||||
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
await page.wait_for_timeout(2000) # Wait for content to load
|
||||
previous_height = current_height
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
# Note: Twitter requires authentication for most content
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": ["https://twitter.com/nasa"], # Public profile
|
||||
"hooks": {"code": hooks_code, "timeout": 30}
|
||||
})
|
||||
```
|
||||
|
||||
#### 5. E-commerce Login (Example Pattern)
|
||||
|
||||
```python
|
||||
# SECURITY WARNING: This is a pattern example.
|
||||
# Never use real credentials in code!
|
||||
# Always use environment variables or secure vaults.
|
||||
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Example pattern for e-commerce sites
|
||||
# DO NOT use real credentials here!
|
||||
|
||||
# Navigate to login page first
|
||||
await page.goto("https://example-shop.com/login")
|
||||
|
||||
# Wait for login form to load
|
||||
await page.wait_for_selector("#email", timeout=5000)
|
||||
|
||||
# Fill login form (use environment variables in production!)
|
||||
await page.fill("#email", "test@example.com") # Never use real email
|
||||
await page.fill("#password", "test_password") # Never use real password
|
||||
|
||||
# Handle "Remember Me" checkbox if present
|
||||
try:
|
||||
await page.uncheck("#remember_me") # Don't remember on shared systems
|
||||
except:
|
||||
pass
|
||||
|
||||
# Submit form
|
||||
await page.click("button[type='submit']")
|
||||
|
||||
# Wait for redirect after login
|
||||
await page.wait_for_url("**/account/**", timeout=10000)
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
```
|
||||
|
||||
#### 6. Extracting Structured Data (Wikipedia)
|
||||
|
||||
```python
|
||||
# Safe example using Wikipedia
|
||||
hooks_code = {
|
||||
"after_goto": """
|
||||
async def hook(page, context, url, response, **kwargs):
|
||||
# Wait for Wikipedia content to load
|
||||
await page.wait_for_selector("#content", timeout=5000)
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Extract structured data from Wikipedia infobox
|
||||
metadata = await page.evaluate('''() => {
|
||||
const infobox = document.querySelector('.infobox');
|
||||
if (!infobox) return null;
|
||||
|
||||
const data = {};
|
||||
const rows = infobox.querySelectorAll('tr');
|
||||
|
||||
rows.forEach(row => {
|
||||
const header = row.querySelector('th');
|
||||
const value = row.querySelector('td');
|
||||
if (header && value) {
|
||||
data[header.innerText.trim()] = value.innerText.trim();
|
||||
}
|
||||
});
|
||||
|
||||
return data;
|
||||
}''')
|
||||
|
||||
if metadata:
|
||||
console.log("Extracted metadata:", metadata)
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": ["https://en.wikipedia.org/wiki/Python_(programming_language)"],
|
||||
"hooks": {"code": hooks_code, "timeout": 20}
|
||||
})
|
||||
```
|
||||
|
||||
### Security Best Practices
|
||||
|
||||
> 🔒 **Critical Security Guidelines**:
|
||||
|
||||
1. **Never Trust User Input**: If accepting hook code from users, always validate and sandbox it
|
||||
2. **Avoid Phishing Sites**: Never use hooks on suspicious or unverified websites
|
||||
3. **Protect Credentials**:
|
||||
- Never hardcode passwords, tokens, or API keys in hook code
|
||||
- Use environment variables or secure secret management
|
||||
- Rotate credentials regularly
|
||||
4. **Network Isolation**: Run the Docker container in an isolated network when testing
|
||||
5. **Audit Hook Code**: Always review hook code before execution
|
||||
6. **Limit Permissions**: Use the least privileged access needed
|
||||
7. **Monitor Execution**: Check hook execution logs for suspicious behavior
|
||||
8. **Timeout Protection**: Always set reasonable timeouts (default 30s)
|
||||
|
||||
### Hook Response Information
|
||||
|
||||
When hooks are used, the response includes detailed execution information:
|
||||
|
||||
```json
|
||||
{
|
||||
"success": true,
|
||||
"results": [...],
|
||||
"hooks": {
|
||||
"status": {
|
||||
"status": "success", // or "partial" or "failed"
|
||||
"attached_hooks": ["on_page_context_created", "before_retrieve_html"],
|
||||
"validation_errors": [],
|
||||
"successfully_attached": 2,
|
||||
"failed_validation": 0
|
||||
},
|
||||
"execution_log": [
|
||||
{
|
||||
"hook_point": "on_page_context_created",
|
||||
"status": "success",
|
||||
"execution_time": 0.523,
|
||||
"timestamp": 1234567890.123
|
||||
}
|
||||
],
|
||||
"errors": [], // Any runtime errors
|
||||
"summary": {
|
||||
"total_executions": 2,
|
||||
"successful": 2,
|
||||
"failed": 0,
|
||||
"timed_out": 0,
|
||||
"success_rate": 100.0
|
||||
}
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### Error Handling
|
||||
|
||||
The hooks system is designed to be resilient:
|
||||
|
||||
1. **Validation Errors**: Caught before execution (syntax errors, wrong parameters)
|
||||
2. **Runtime Errors**: Handled gracefully - crawl continues with original page object
|
||||
3. **Timeout Protection**: Hooks automatically terminated after timeout (configurable 1-120s)
|
||||
|
||||
### Complete Example: Safe Multi-Hook Crawling
|
||||
|
||||
```python
|
||||
import requests
|
||||
import json
|
||||
import os
|
||||
|
||||
# Safe example using httpbin.org for testing
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Set viewport and test cookies
|
||||
await page.set_viewport_size({"width": 1920, "height": 1080})
|
||||
await context.add_cookies([
|
||||
{"name": "test_cookie", "value": "test_value", "domain": ".httpbin.org", "path": "/"}
|
||||
])
|
||||
|
||||
# Block unnecessary resources for httpbin
|
||||
await context.route("**/*.{png,jpg,jpeg}", lambda route: route.abort())
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
# Add custom headers for testing
|
||||
await page.set_extra_http_headers({
|
||||
"X-Test-Header": "crawl4ai-test",
|
||||
"Accept-Language": "en-US,en;q=0.9"
|
||||
})
|
||||
print(f"[HOOK] Navigating to: {url}")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Simple scroll for any lazy-loaded content
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
await page.wait_for_timeout(1000)
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
# Make the request to safe testing endpoints
|
||||
response = requests.post("http://localhost:11235/crawl", json={
|
||||
"urls": [
|
||||
"https://httpbin.org/html",
|
||||
"https://httpbin.org/json"
|
||||
],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 30
|
||||
},
|
||||
"crawler_config": {
|
||||
"cache_mode": "bypass"
|
||||
}
|
||||
})
|
||||
|
||||
# Check results
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
|
||||
# Check hook execution
|
||||
if data['hooks']['status']['status'] == 'success':
|
||||
print(f"✅ All {len(data['hooks']['status']['attached_hooks'])} hooks executed successfully")
|
||||
print(f"Execution stats: {data['hooks']['summary']}")
|
||||
|
||||
# Process crawl results
|
||||
for result in data['results']:
|
||||
print(f"Crawled: {result['url']} - Success: {result['success']}")
|
||||
else:
|
||||
print(f"Error: {response.status_code}")
|
||||
```
|
||||
|
||||
> 💡 **Remember**: Always test your hooks on safe, known websites first before using them on production sites. Never crawl sites that you don't have permission to access or that might be malicious.
|
||||
|
||||
---
|
||||
|
||||
## Dockerfile Parameters
|
||||
|
||||
You can customize the image build process using build arguments (`--build-arg`). These are typically used via `docker buildx build` or within the `docker-compose.yml` file.
|
||||
|
||||
372
tests/docker/test_hooks_client.py
Normal file
372
tests/docker/test_hooks_client.py
Normal file
@@ -0,0 +1,372 @@
|
||||
#!/usr/bin/env python3
|
||||
"""
|
||||
Test client for demonstrating user-provided hooks in Crawl4AI Docker API
|
||||
"""
|
||||
|
||||
import requests
|
||||
import json
|
||||
from typing import Dict, Any
|
||||
|
||||
|
||||
API_BASE_URL = "http://localhost:11234" # Adjust if needed
|
||||
|
||||
|
||||
def test_hooks_info():
|
||||
"""Get information about available hooks"""
|
||||
print("=" * 70)
|
||||
print("Testing: GET /hooks/info")
|
||||
print("=" * 70)
|
||||
|
||||
response = requests.get(f"{API_BASE_URL}/hooks/info")
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("Available Hook Points:")
|
||||
for hook, info in data['available_hooks'].items():
|
||||
print(f"\n{hook}:")
|
||||
print(f" Parameters: {', '.join(info['parameters'])}")
|
||||
print(f" Description: {info['description']}")
|
||||
else:
|
||||
print(f"Error: {response.status_code}")
|
||||
print(response.text)
|
||||
|
||||
|
||||
def test_basic_crawl_with_hooks():
|
||||
"""Test basic crawling with user-provided hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: POST /crawl with hooks")
|
||||
print("=" * 70)
|
||||
|
||||
# Define hooks as Python code strings
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("Hook: Setting up page context")
|
||||
# Block images to speed up crawling
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp}", lambda route: route.abort())
|
||||
print("Hook: Images blocked")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("Hook: Before retrieving HTML")
|
||||
# Scroll to bottom to load lazy content
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight)")
|
||||
await page.wait_for_timeout(1000)
|
||||
print("Hook: Scrolled to bottom")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
print(f"Hook: About to navigate to {url}")
|
||||
# Add custom headers
|
||||
await page.set_extra_http_headers({
|
||||
'X-Test-Header': 'crawl4ai-hooks-test'
|
||||
})
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
# Create request payload
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 30
|
||||
}
|
||||
}
|
||||
|
||||
print("Sending request with hooks...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("\n✅ Crawl successful!")
|
||||
|
||||
# Check hooks status
|
||||
if 'hooks' in data:
|
||||
hooks_info = data['hooks']
|
||||
print("\nHooks Execution Summary:")
|
||||
print(f" Status: {hooks_info['status']['status']}")
|
||||
print(f" Attached hooks: {', '.join(hooks_info['status']['attached_hooks'])}")
|
||||
|
||||
if hooks_info['status']['validation_errors']:
|
||||
print("\n⚠️ Validation Errors:")
|
||||
for error in hooks_info['status']['validation_errors']:
|
||||
print(f" - {error['hook_point']}: {error['error']}")
|
||||
|
||||
if 'summary' in hooks_info:
|
||||
summary = hooks_info['summary']
|
||||
print(f"\nExecution Statistics:")
|
||||
print(f" Total executions: {summary['total_executions']}")
|
||||
print(f" Successful: {summary['successful']}")
|
||||
print(f" Failed: {summary['failed']}")
|
||||
print(f" Timed out: {summary['timed_out']}")
|
||||
print(f" Success rate: {summary['success_rate']:.1f}%")
|
||||
|
||||
if hooks_info['execution_log']:
|
||||
print("\nExecution Log:")
|
||||
for log_entry in hooks_info['execution_log']:
|
||||
status_icon = "✅" if log_entry['status'] == 'success' else "❌"
|
||||
print(f" {status_icon} {log_entry['hook_point']}: {log_entry['status']} ({log_entry.get('execution_time', 0):.2f}s)")
|
||||
|
||||
if hooks_info['errors']:
|
||||
print("\n❌ Hook Errors:")
|
||||
for error in hooks_info['errors']:
|
||||
print(f" - {error['hook_point']}: {error['error']}")
|
||||
|
||||
# Show crawl results
|
||||
if 'results' in data:
|
||||
print(f"\nCrawled {len(data['results'])} URL(s)")
|
||||
for result in data['results']:
|
||||
print(f" - {result['url']}: {'✅' if result['success'] else '❌'}")
|
||||
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
print(response.text)
|
||||
|
||||
|
||||
def test_invalid_hook():
|
||||
"""Test with an invalid hook to see error handling"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Invalid hook handling")
|
||||
print("=" * 70)
|
||||
|
||||
# Intentionally broken hook
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
def hook(page, context): # Missing async!
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# This will cause an error
|
||||
await page.non_existent_method()
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 5
|
||||
}
|
||||
}
|
||||
|
||||
print("Sending request with invalid hooks...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
|
||||
if 'hooks' in data:
|
||||
hooks_info = data['hooks']
|
||||
print(f"\nHooks Status: {hooks_info['status']['status']}")
|
||||
|
||||
if hooks_info['status']['validation_errors']:
|
||||
print("\n✅ Validation caught errors (as expected):")
|
||||
for error in hooks_info['status']['validation_errors']:
|
||||
print(f" - {error['hook_point']}: {error['error']}")
|
||||
|
||||
if hooks_info['errors']:
|
||||
print("\n✅ Runtime errors handled gracefully:")
|
||||
for error in hooks_info['errors']:
|
||||
print(f" - {error['hook_point']}: {error['error']}")
|
||||
|
||||
# The crawl should still succeed despite hook errors
|
||||
if data.get('success'):
|
||||
print("\n✅ Crawl succeeded despite hook errors (error isolation working!)")
|
||||
|
||||
else:
|
||||
print(f"Error: {response.status_code}")
|
||||
print(response.text)
|
||||
|
||||
|
||||
def test_authentication_hook():
|
||||
"""Test authentication using hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Authentication with hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
# For httpbin.org basic auth test, set Authorization header
|
||||
import base64
|
||||
|
||||
# httpbin.org/basic-auth/user/passwd expects username="user" and password="passwd"
|
||||
credentials = base64.b64encode(b"user:passwd").decode('ascii')
|
||||
|
||||
await page.set_extra_http_headers({
|
||||
'Authorization': f'Basic {credentials}'
|
||||
})
|
||||
|
||||
print(f"Hook: Set Authorization header for {url}")
|
||||
return page
|
||||
""",
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Example: Add cookies for session tracking
|
||||
await context.add_cookies([
|
||||
{
|
||||
'name': 'session_id',
|
||||
'value': 'test_session_123',
|
||||
'domain': '.httpbin.org',
|
||||
'path': '/',
|
||||
'httpOnly': True,
|
||||
'secure': True
|
||||
}
|
||||
])
|
||||
|
||||
print("Hook: Added session cookie")
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/basic-auth/user/passwd"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 30
|
||||
}
|
||||
}
|
||||
|
||||
print("Sending request with authentication hook...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
if data.get('success'):
|
||||
print("✅ Crawl with authentication hook successful")
|
||||
|
||||
# Check if hooks executed
|
||||
if 'hooks' in data:
|
||||
hooks_info = data['hooks']
|
||||
if hooks_info.get('summary', {}).get('successful', 0) > 0:
|
||||
print(f"✅ Authentication hooks executed: {hooks_info['summary']['successful']} successful")
|
||||
|
||||
# Check for any hook errors
|
||||
if hooks_info.get('errors'):
|
||||
print("⚠️ Hook errors:")
|
||||
for error in hooks_info['errors']:
|
||||
print(f" - {error}")
|
||||
|
||||
# Check if authentication worked by looking at the result
|
||||
if 'results' in data and len(data['results']) > 0:
|
||||
result = data['results'][0]
|
||||
if result.get('success'):
|
||||
print("✅ Page crawled successfully (authentication worked!)")
|
||||
# httpbin.org/basic-auth returns JSON with authenticated=true when successful
|
||||
if 'authenticated' in str(result.get('html', '')):
|
||||
print("✅ Authentication confirmed in response content")
|
||||
else:
|
||||
print(f"❌ Crawl failed: {result.get('error_message', 'Unknown error')}")
|
||||
else:
|
||||
print("❌ Request failed")
|
||||
print(f"Response: {json.dumps(data, indent=2)}")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
try:
|
||||
error_data = response.json()
|
||||
print(f"Error details: {json.dumps(error_data, indent=2)}")
|
||||
except:
|
||||
print(f"Error text: {response.text[:500]}")
|
||||
|
||||
|
||||
def test_streaming_with_hooks():
|
||||
"""Test streaming endpoint with hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: POST /crawl/stream with hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
await page.evaluate("document.querySelectorAll('img').forEach(img => img.remove())")
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html", "https://httpbin.org/json"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 10
|
||||
}
|
||||
}
|
||||
|
||||
print("Sending streaming request with hooks...")
|
||||
|
||||
with requests.post(f"{API_BASE_URL}/crawl/stream", json=payload, stream=True) as response:
|
||||
if response.status_code == 200:
|
||||
# Check headers for hooks status
|
||||
hooks_status = response.headers.get('X-Hooks-Status')
|
||||
if hooks_status:
|
||||
print(f"Hooks Status (from header): {hooks_status}")
|
||||
|
||||
print("\nStreaming results:")
|
||||
for line in response.iter_lines():
|
||||
if line:
|
||||
try:
|
||||
result = json.loads(line)
|
||||
if 'url' in result:
|
||||
print(f" Received: {result['url']}")
|
||||
elif 'status' in result:
|
||||
print(f" Stream status: {result['status']}")
|
||||
except json.JSONDecodeError:
|
||||
print(f" Raw: {line.decode()}")
|
||||
else:
|
||||
print(f"Error: {response.status_code}")
|
||||
|
||||
|
||||
def test_basic_without_hooks():
|
||||
"""Test basic crawl without hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: POST /crawl with no hooks")
|
||||
print("=" * 70)
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html", "https://httpbin.org/json"]
|
||||
}
|
||||
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print(f"Response: {json.dumps(data, indent=2)}")
|
||||
else:
|
||||
print(f"Error: {response.status_code}")
|
||||
|
||||
|
||||
def main():
|
||||
"""Run all tests"""
|
||||
print("🔧 Crawl4AI Docker API - Hooks Testing")
|
||||
print("=" * 70)
|
||||
|
||||
# Test 1: Get hooks information
|
||||
# test_hooks_info()
|
||||
|
||||
# Test 2: Basic crawl with hooks
|
||||
# test_basic_crawl_with_hooks()
|
||||
|
||||
# Test 3: Invalid hooks (error handling)
|
||||
test_invalid_hook()
|
||||
|
||||
# # Test 4: Authentication hook
|
||||
# test_authentication_hook()
|
||||
|
||||
# # Test 5: Streaming with hooks
|
||||
# test_streaming_with_hooks()
|
||||
|
||||
# # Test 6: Basic crawl without hooks
|
||||
# test_basic_without_hooks()
|
||||
|
||||
print("\n" + "=" * 70)
|
||||
print("✅ All tests completed!")
|
||||
print("=" * 70)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
512
tests/docker/test_hooks_comprehensive.py
Normal file
512
tests/docker/test_hooks_comprehensive.py
Normal file
@@ -0,0 +1,512 @@
|
||||
#!/usr/bin/env python3
|
||||
"""
|
||||
Comprehensive test demonstrating all hook types from hooks_example.py
|
||||
adapted for the Docker API with real URLs
|
||||
"""
|
||||
|
||||
import requests
|
||||
import json
|
||||
import time
|
||||
from typing import Dict, Any
|
||||
|
||||
API_BASE_URL = "http://localhost:11234"
|
||||
|
||||
|
||||
def test_all_hooks_demo():
|
||||
"""Demonstrate all 8 hook types with practical examples"""
|
||||
print("=" * 70)
|
||||
print("Testing: All Hooks Comprehensive Demo")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_browser_created": """
|
||||
async def hook(browser, **kwargs):
|
||||
# Hook called after browser is created
|
||||
print("[HOOK] on_browser_created - Browser is ready!")
|
||||
# Browser-level configurations would go here
|
||||
return browser
|
||||
""",
|
||||
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called after a new page and context are created
|
||||
print("[HOOK] on_page_context_created - New page created!")
|
||||
|
||||
# Set viewport size for consistent rendering
|
||||
await page.set_viewport_size({"width": 1920, "height": 1080})
|
||||
|
||||
# Add cookies for the session (using httpbin.org domain)
|
||||
await context.add_cookies([
|
||||
{
|
||||
"name": "test_session",
|
||||
"value": "abc123xyz",
|
||||
"domain": ".httpbin.org",
|
||||
"path": "/",
|
||||
"httpOnly": True,
|
||||
"secure": True
|
||||
}
|
||||
])
|
||||
|
||||
# Block ads and tracking scripts to speed up crawling
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp,svg}", lambda route: route.abort())
|
||||
await context.route("**/analytics/*", lambda route: route.abort())
|
||||
await context.route("**/ads/*", lambda route: route.abort())
|
||||
|
||||
print("[HOOK] Viewport set, cookies added, and ads blocked")
|
||||
return page
|
||||
""",
|
||||
|
||||
"on_user_agent_updated": """
|
||||
async def hook(page, context, user_agent, **kwargs):
|
||||
# Hook called when user agent is updated
|
||||
print(f"[HOOK] on_user_agent_updated - User agent: {user_agent[:50]}...")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
# Hook called before navigating to each URL
|
||||
print(f"[HOOK] before_goto - About to visit: {url}")
|
||||
|
||||
# Add custom headers for the request
|
||||
await page.set_extra_http_headers({
|
||||
"X-Custom-Header": "crawl4ai-test",
|
||||
"Accept-Language": "en-US,en;q=0.9",
|
||||
"DNT": "1"
|
||||
})
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"after_goto": """
|
||||
async def hook(page, context, url, response, **kwargs):
|
||||
# Hook called after navigating to each URL
|
||||
print(f"[HOOK] after_goto - Successfully loaded: {url}")
|
||||
|
||||
# Wait a moment for dynamic content to load
|
||||
await page.wait_for_timeout(1000)
|
||||
|
||||
# Check if specific elements exist (with error handling)
|
||||
try:
|
||||
# For httpbin.org, wait for body element
|
||||
await page.wait_for_selector("body", timeout=2000)
|
||||
print("[HOOK] Body element found and loaded")
|
||||
except:
|
||||
print("[HOOK] Timeout waiting for body, continuing anyway")
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"on_execution_started": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called after custom JavaScript execution
|
||||
print("[HOOK] on_execution_started - Custom JS executed!")
|
||||
|
||||
# You could inject additional JavaScript here if needed
|
||||
await page.evaluate("console.log('[INJECTED] Hook JS running');")
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
# Hook called before retrieving the HTML content
|
||||
print("[HOOK] before_retrieve_html - Preparing to get HTML")
|
||||
|
||||
# Scroll to bottom to trigger lazy loading
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight);")
|
||||
await page.wait_for_timeout(500)
|
||||
|
||||
# Scroll back to top
|
||||
await page.evaluate("window.scrollTo(0, 0);")
|
||||
await page.wait_for_timeout(500)
|
||||
|
||||
# One more scroll to middle for good measure
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight / 2);")
|
||||
|
||||
print("[HOOK] Scrolling completed for lazy-loaded content")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_return_html": """
|
||||
async def hook(page, context, html, **kwargs):
|
||||
# Hook called before returning the HTML content
|
||||
print(f"[HOOK] before_return_html - HTML length: {len(html)} characters")
|
||||
|
||||
# Log some page metrics
|
||||
metrics = await page.evaluate('''() => {
|
||||
return {
|
||||
images: document.images.length,
|
||||
links: document.links.length,
|
||||
scripts: document.scripts.length
|
||||
}
|
||||
}''')
|
||||
|
||||
print(f"[HOOK] Page metrics - Images: {metrics['images']}, Links: {metrics['links']}, Scripts: {metrics['scripts']}")
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
# Create request payload
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 30
|
||||
},
|
||||
"crawler_config": {
|
||||
"js_code": "window.scrollTo(0, document.body.scrollHeight);",
|
||||
"wait_for": "body",
|
||||
"cache_mode": "bypass"
|
||||
}
|
||||
}
|
||||
|
||||
print("\nSending request with all 8 hooks...")
|
||||
start_time = time.time()
|
||||
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
elapsed_time = time.time() - start_time
|
||||
print(f"Request completed in {elapsed_time:.2f} seconds")
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("\n✅ Request successful!")
|
||||
|
||||
# Check hooks execution
|
||||
if 'hooks' in data:
|
||||
hooks_info = data['hooks']
|
||||
print("\n📊 Hooks Execution Summary:")
|
||||
print(f" Status: {hooks_info['status']['status']}")
|
||||
print(f" Attached hooks: {len(hooks_info['status']['attached_hooks'])}")
|
||||
|
||||
for hook_name in hooks_info['status']['attached_hooks']:
|
||||
print(f" ✓ {hook_name}")
|
||||
|
||||
if 'summary' in hooks_info:
|
||||
summary = hooks_info['summary']
|
||||
print(f"\n📈 Execution Statistics:")
|
||||
print(f" Total executions: {summary['total_executions']}")
|
||||
print(f" Successful: {summary['successful']}")
|
||||
print(f" Failed: {summary['failed']}")
|
||||
print(f" Timed out: {summary['timed_out']}")
|
||||
print(f" Success rate: {summary['success_rate']:.1f}%")
|
||||
|
||||
if hooks_info.get('execution_log'):
|
||||
print(f"\n📝 Execution Log:")
|
||||
for log_entry in hooks_info['execution_log']:
|
||||
status_icon = "✅" if log_entry['status'] == 'success' else "❌"
|
||||
exec_time = log_entry.get('execution_time', 0)
|
||||
print(f" {status_icon} {log_entry['hook_point']}: {exec_time:.3f}s")
|
||||
|
||||
# Check crawl results
|
||||
if 'results' in data and len(data['results']) > 0:
|
||||
print(f"\n📄 Crawl Results:")
|
||||
for result in data['results']:
|
||||
print(f" URL: {result['url']}")
|
||||
print(f" Success: {result.get('success', False)}")
|
||||
if result.get('html'):
|
||||
print(f" HTML length: {len(result['html'])} characters")
|
||||
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
try:
|
||||
error_data = response.json()
|
||||
print(f"Error details: {json.dumps(error_data, indent=2)}")
|
||||
except:
|
||||
print(f"Error text: {response.text[:500]}")
|
||||
|
||||
|
||||
def test_authentication_flow():
|
||||
"""Test a complete authentication flow with multiple hooks"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Authentication Flow with Multiple Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Setting up authentication context")
|
||||
|
||||
# Add authentication cookies
|
||||
await context.add_cookies([
|
||||
{
|
||||
"name": "auth_token",
|
||||
"value": "fake_jwt_token_here",
|
||||
"domain": ".httpbin.org",
|
||||
"path": "/",
|
||||
"httpOnly": True,
|
||||
"secure": True
|
||||
}
|
||||
])
|
||||
|
||||
# Set localStorage items (for SPA authentication)
|
||||
await page.evaluate('''
|
||||
localStorage.setItem('user_id', '12345');
|
||||
localStorage.setItem('auth_time', new Date().toISOString());
|
||||
''')
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_goto": """
|
||||
async def hook(page, context, url, **kwargs):
|
||||
print(f"[HOOK] Adding auth headers for {url}")
|
||||
|
||||
# Add Authorization header
|
||||
import base64
|
||||
credentials = base64.b64encode(b"user:passwd").decode('ascii')
|
||||
|
||||
await page.set_extra_http_headers({
|
||||
'Authorization': f'Basic {credentials}',
|
||||
'X-API-Key': 'test-api-key-123'
|
||||
})
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": [
|
||||
"https://httpbin.org/basic-auth/user/passwd"
|
||||
],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 15
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting authentication with httpbin endpoints...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Authentication test completed")
|
||||
|
||||
if 'results' in data:
|
||||
for i, result in enumerate(data['results']):
|
||||
print(f"\n URL {i+1}: {result['url']}")
|
||||
if result.get('success'):
|
||||
# Check for authentication success indicators
|
||||
html_content = result.get('html', '')
|
||||
if '"authenticated"' in html_content and 'true' in html_content:
|
||||
print(" ✅ Authentication successful! Basic auth worked.")
|
||||
else:
|
||||
print(" ⚠️ Page loaded but auth status unclear")
|
||||
else:
|
||||
print(f" ❌ Failed: {result.get('error_message', 'Unknown error')}")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def test_performance_optimization_hooks():
|
||||
"""Test hooks for performance optimization"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Performance Optimization Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"on_page_context_created": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Optimizing page for performance")
|
||||
|
||||
# Block resource-heavy content
|
||||
await context.route("**/*.{png,jpg,jpeg,gif,webp,svg,ico}", lambda route: route.abort())
|
||||
await context.route("**/*.{woff,woff2,ttf,otf}", lambda route: route.abort())
|
||||
await context.route("**/*.{mp4,webm,ogg,mp3,wav}", lambda route: route.abort())
|
||||
await context.route("**/googletagmanager.com/*", lambda route: route.abort())
|
||||
await context.route("**/google-analytics.com/*", lambda route: route.abort())
|
||||
await context.route("**/doubleclick.net/*", lambda route: route.abort())
|
||||
await context.route("**/facebook.com/*", lambda route: route.abort())
|
||||
|
||||
# Disable animations and transitions
|
||||
await page.add_style_tag(content='''
|
||||
*, *::before, *::after {
|
||||
animation-duration: 0s !important;
|
||||
animation-delay: 0s !important;
|
||||
transition-duration: 0s !important;
|
||||
transition-delay: 0s !important;
|
||||
}
|
||||
''')
|
||||
|
||||
print("[HOOK] Performance optimizations applied")
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Removing unnecessary elements before extraction")
|
||||
|
||||
# Remove ads, popups, and other unnecessary elements
|
||||
await page.evaluate('''() => {
|
||||
// Remove common ad containers
|
||||
const adSelectors = [
|
||||
'.ad', '.ads', '.advertisement', '[id*="ad-"]', '[class*="ad-"]',
|
||||
'.popup', '.modal', '.overlay', '.cookie-banner', '.newsletter-signup'
|
||||
];
|
||||
|
||||
adSelectors.forEach(selector => {
|
||||
document.querySelectorAll(selector).forEach(el => el.remove());
|
||||
});
|
||||
|
||||
// Remove script tags to clean up HTML
|
||||
document.querySelectorAll('script').forEach(el => el.remove());
|
||||
|
||||
// Remove style tags we don't need
|
||||
document.querySelectorAll('style').forEach(el => el.remove());
|
||||
}''')
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 10
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting performance optimization hooks...")
|
||||
start_time = time.time()
|
||||
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
elapsed_time = time.time() - start_time
|
||||
print(f"Request completed in {elapsed_time:.2f} seconds")
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Performance optimization test completed")
|
||||
|
||||
if 'results' in data and len(data['results']) > 0:
|
||||
result = data['results'][0]
|
||||
if result.get('html'):
|
||||
print(f" HTML size: {len(result['html'])} characters")
|
||||
print(" Resources blocked, ads removed, animations disabled")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def test_content_extraction_hooks():
|
||||
"""Test hooks for intelligent content extraction"""
|
||||
print("\n" + "=" * 70)
|
||||
print("Testing: Content Extraction Hooks")
|
||||
print("=" * 70)
|
||||
|
||||
hooks_code = {
|
||||
"after_goto": """
|
||||
async def hook(page, context, url, response, **kwargs):
|
||||
print(f"[HOOK] Waiting for dynamic content on {url}")
|
||||
|
||||
# Wait for any lazy-loaded content
|
||||
await page.wait_for_timeout(2000)
|
||||
|
||||
# Trigger any "Load More" buttons
|
||||
try:
|
||||
load_more = await page.query_selector('[class*="load-more"], [class*="show-more"], button:has-text("Load More")')
|
||||
if load_more:
|
||||
await load_more.click()
|
||||
await page.wait_for_timeout(1000)
|
||||
print("[HOOK] Clicked 'Load More' button")
|
||||
except:
|
||||
pass
|
||||
|
||||
return page
|
||||
""",
|
||||
|
||||
"before_retrieve_html": """
|
||||
async def hook(page, context, **kwargs):
|
||||
print("[HOOK] Extracting structured data")
|
||||
|
||||
# Extract metadata
|
||||
metadata = await page.evaluate('''() => {
|
||||
const getMeta = (name) => {
|
||||
const element = document.querySelector(`meta[name="${name}"], meta[property="${name}"]`);
|
||||
return element ? element.getAttribute('content') : null;
|
||||
};
|
||||
|
||||
return {
|
||||
title: document.title,
|
||||
description: getMeta('description') || getMeta('og:description'),
|
||||
author: getMeta('author'),
|
||||
keywords: getMeta('keywords'),
|
||||
ogTitle: getMeta('og:title'),
|
||||
ogImage: getMeta('og:image'),
|
||||
canonical: document.querySelector('link[rel="canonical"]')?.href,
|
||||
jsonLd: Array.from(document.querySelectorAll('script[type="application/ld+json"]'))
|
||||
.map(el => el.textContent).filter(Boolean)
|
||||
};
|
||||
}''')
|
||||
|
||||
print(f"[HOOK] Extracted metadata: {json.dumps(metadata, indent=2)}")
|
||||
|
||||
# Infinite scroll handling
|
||||
for i in range(3):
|
||||
await page.evaluate("window.scrollTo(0, document.body.scrollHeight);")
|
||||
await page.wait_for_timeout(1000)
|
||||
print(f"[HOOK] Scroll iteration {i+1}/3")
|
||||
|
||||
return page
|
||||
"""
|
||||
}
|
||||
|
||||
payload = {
|
||||
"urls": ["https://httpbin.org/html", "https://httpbin.org/json"],
|
||||
"hooks": {
|
||||
"code": hooks_code,
|
||||
"timeout": 20
|
||||
}
|
||||
}
|
||||
|
||||
print("\nTesting content extraction hooks...")
|
||||
response = requests.post(f"{API_BASE_URL}/crawl", json=payload)
|
||||
|
||||
if response.status_code == 200:
|
||||
data = response.json()
|
||||
print("✅ Content extraction test completed")
|
||||
|
||||
if 'hooks' in data and 'summary' in data['hooks']:
|
||||
summary = data['hooks']['summary']
|
||||
print(f" Hooks executed: {summary['successful']}/{summary['total_executions']}")
|
||||
|
||||
if 'results' in data:
|
||||
for result in data['results']:
|
||||
print(f"\n URL: {result['url']}")
|
||||
print(f" Success: {result.get('success', False)}")
|
||||
else:
|
||||
print(f"❌ Error: {response.status_code}")
|
||||
|
||||
|
||||
def main():
|
||||
"""Run comprehensive hook tests"""
|
||||
print("🔧 Crawl4AI Docker API - Comprehensive Hooks Testing")
|
||||
print("Based on docs/examples/hooks_example.py")
|
||||
print("=" * 70)
|
||||
|
||||
tests = [
|
||||
("All Hooks Demo", test_all_hooks_demo),
|
||||
("Authentication Flow", test_authentication_flow),
|
||||
("Performance Optimization", test_performance_optimization_hooks),
|
||||
("Content Extraction", test_content_extraction_hooks),
|
||||
]
|
||||
|
||||
for i, (name, test_func) in enumerate(tests, 1):
|
||||
print(f"\n📌 Test {i}/{len(tests)}: {name}")
|
||||
try:
|
||||
test_func()
|
||||
print(f"✅ {name} completed")
|
||||
except Exception as e:
|
||||
print(f"❌ {name} failed: {e}")
|
||||
import traceback
|
||||
traceback.print_exc()
|
||||
|
||||
print("\n" + "=" * 70)
|
||||
print("🎉 All comprehensive hook tests completed!")
|
||||
print("=" * 70)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
Reference in New Issue
Block a user