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feat(browser): enhance browser context creation with user data directory support and improved storage state handling

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UncleCode
2025-03-23 19:07:13 +08:00
parent 0094cac675
commit 6eeb2e4076
1 changed files with 139 additions and 83 deletions
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222
crawl4ai/browser/strategies.py
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@@ -139,6 +139,112 @@ class BaseBrowserStrategy(ABC):
signature_hash = hashlib.sha256(signature_json.encode("utf-8")).hexdigest()
return signature_hash
async def create_browser_context(self, crawlerRunConfig: Optional[CrawlerRunConfig] = None) -> BrowserContext:
"""Creates and returns a new browser context with configured settings.
Args:
crawlerRunConfig: Configuration object for the crawler run
Returns:
BrowserContext: Browser context object with the specified configurations
"""
if not self.browser:
raise ValueError("Browser must be initialized before creating context")
# Base settings
user_agent = self.config.headers.get("User-Agent", self.config.user_agent)
viewport_settings = {
"width": self.config.viewport_width,
"height": self.config.viewport_height,
}
proxy_settings = {"server": self.config.proxy} if self.config.proxy else None
# Define blocked extensions for resource optimization
blocked_extensions = [
# Images
"jpg", "jpeg", "png", "gif", "webp", "svg", "ico", "bmp", "tiff", "psd",
# Fonts
"woff", "woff2", "ttf", "otf", "eot",
# Media
"mp4", "webm", "ogg", "avi", "mov", "wmv", "flv", "m4v", "mp3", "wav", "aac",
"m4a", "opus", "flac",
# Documents
"pdf", "doc", "docx", "xls", "xlsx", "ppt", "pptx",
# Archives
"zip", "rar", "7z", "tar", "gz",
# Scripts and data
"xml", "swf", "wasm",
]
# Common context settings
context_settings = {
"user_agent": user_agent,
"viewport": viewport_settings,
"proxy": proxy_settings,
"accept_downloads": self.config.accept_downloads,
"ignore_https_errors": self.config.ignore_https_errors,
"device_scale_factor": 1.0,
"java_script_enabled": self.config.java_script_enabled,
}
# Apply text mode settings if enabled
if self.config.text_mode:
text_mode_settings = {
"has_touch": False,
"is_mobile": False,
# Disable javascript in text mode
"java_script_enabled": False
}
# Update context settings with text mode settings
context_settings.update(text_mode_settings)
if self.logger:
self.logger.debug("Text mode enabled for browser context", tag="BROWSER")
# Handle storage state properly - this is key for persistence
if self.config.storage_state:
context_settings["storage_state"] = self.config.storage_state
if self.logger:
if isinstance(self.config.storage_state, str):
self.logger.debug(f"Using storage state from file: {self.config.storage_state}", tag="BROWSER")
else:
self.logger.debug("Using storage state from config object", tag="BROWSER")
# If user_data_dir is specified, browser persistence should be automatic
if self.config.user_data_dir and self.logger:
self.logger.debug(f"Using user data directory: {self.config.user_data_dir}", tag="BROWSER")
# Apply crawler-specific configurations if provided
if crawlerRunConfig:
# Check if there is value for crawlerRunConfig.proxy_config set add that to context
if crawlerRunConfig.proxy_config:
proxy_settings = {
"server": crawlerRunConfig.proxy_config.server,
}
if crawlerRunConfig.proxy_config.username:
proxy_settings.update({
"username": crawlerRunConfig.proxy_config.username,
"password": crawlerRunConfig.proxy_config.password,
})
context_settings["proxy"] = proxy_settings
# Create and return the context
try:
# Create the context with appropriate settings
context = await self.browser.new_context(**context_settings)
# Apply text mode resource blocking if enabled
if self.config.text_mode:
# Create and apply route patterns for each extension
for ext in blocked_extensions:
await context.route(f"**/*.{ext}", lambda route: route.abort())
return context
except Exception as e:
if self.logger:
self.logger.error(f"Error creating browser context: {str(e)}", tag="BROWSER")
# Fallback to basic context creation if the advanced settings fail
return await self.browser.new_context()
async def setup_context(self, context: BrowserContext, crawlerRunConfig: Optional[CrawlerRunConfig] = None):
"""Set up a browser context with the configured options.
@@ -301,97 +407,32 @@ class PlaywrightBrowserStrategy(BaseBrowserStrategy):
async def create_browser_context(self, crawlerRunConfig: Optional[CrawlerRunConfig] = None) -> BrowserContext:
"""Creates and returns a new browser context with configured settings.
This implementation extends the base class version to handle user_data_dir specifically.
Args:
crawlerRunConfig: Configuration object for the crawler run
Returns:
BrowserContext: Browser context object with the specified configurations
"""
# Base settings
user_agent = self.config.headers.get("User-Agent", self.config.user_agent)
viewport_settings = {
"width": self.config.viewport_width,
"height": self.config.viewport_height,
}
proxy_settings = {"server": self.config.proxy} if self.config.proxy else None
blocked_extensions = [
# Images
"jpg", "jpeg", "png", "gif", "webp", "svg", "ico", "bmp", "tiff", "psd",
# Fonts
"woff", "woff2", "ttf", "otf", "eot",
# Media
"mp4", "webm", "ogg", "avi", "mov", "wmv", "flv", "m4v", "mp3", "wav", "aac",
"m4a", "opus", "flac",
# Documents
"pdf", "doc", "docx", "xls", "xlsx", "ppt", "pptx",
# Archives
"zip", "rar", "7z", "tar", "gz",
# Scripts and data
"xml", "swf", "wasm",
]
# Common context settings
context_settings = {
"user_agent": user_agent,
"viewport": viewport_settings,
"proxy": proxy_settings,
"accept_downloads": self.config.accept_downloads,
"ignore_https_errors": self.config.ignore_https_errors,
"device_scale_factor": 1.0,
"java_script_enabled": self.config.java_script_enabled,
}
# Handle storage state properly - this is key for persistence
if self.config.storage_state:
context_settings["storage_state"] = self.config.storage_state
if self.logger:
if isinstance(self.config.storage_state, str):
self.logger.debug(f"Using storage state from file: {self.config.storage_state}", tag="BROWSER")
else:
self.logger.debug("Using storage state from config object", tag="BROWSER")
# Handle user_data_dir explicitly to ensure storage persistence
if self.config.user_data_dir:
context_settings["storage_state"] = os.path.join(
self.config.user_data_dir, "Default", "storage_state.json"
)
# Create a storage state file path if none exists
storage_path = os.path.join(self.config.user_data_dir, "Default", "storage_state.json")
# Create the file if it doesn't exist
if not os.path.exists(context_settings["storage_state"]):
os.makedirs(os.path.dirname(context_settings["storage_state"]), exist_ok=True)
with open(context_settings["storage_state"], "w") as f:
if not os.path.exists(storage_path):
os.makedirs(os.path.dirname(storage_path), exist_ok=True)
with open(storage_path, "w") as f:
json.dump({}, f)
if crawlerRunConfig:
# Check if there is value for crawlerRunConfig.proxy_config set add that to context
if crawlerRunConfig.proxy_config:
proxy_settings = {
"server": crawlerRunConfig.proxy_config.server,
}
if crawlerRunConfig.proxy_config.username:
proxy_settings.update({
"username": crawlerRunConfig.proxy_config.username,
"password": crawlerRunConfig.proxy_config.password,
})
context_settings["proxy"] = proxy_settings
if self.config.text_mode:
text_mode_settings = {
"has_touch": False,
"is_mobile": False,
}
# Update context settings with text mode settings
context_settings.update(text_mode_settings)
# Create and return the context with all settings
context = await self.browser.new_context(**context_settings)
# Apply text mode settings if enabled
if self.config.text_mode:
# Create and apply route patterns for each extension
for ext in blocked_extensions:
await context.route(f"**/*.{ext}", lambda route: route.abort())
return context
# Override storage_state with our specific path
self.config.storage_state = storage_path
if self.logger:
self.logger.debug(f"Using persistent storage state at: {storage_path}", tag="BROWSER")
# Now call the base class implementation which handles everything else
return await super().create_browser_context(crawlerRunConfig)
def _cleanup_expired_sessions(self):
"""Clean up expired sessions based on TTL."""
@@ -704,13 +745,28 @@ class CDPBrowserStrategy(BaseBrowserStrategy):
async def create_browser_context(self, crawlerRunConfig: Optional[CrawlerRunConfig] = None) -> BrowserContext:
"""Create a new browser context.
Uses the base class implementation which handles all configurations.
Args:
crawlerRunConfig: Configuration object for the crawler run
Returns:
BrowserContext: Browser context object
"""
return await self.browser.new_context()
# Handle user_data_dir for CDP browsers
if self.config.user_data_dir:
# For CDP-based browsers, storage persistence is typically handled by the user_data_dir
# at the browser level, but we'll create a storage_state location for Playwright as well
storage_path = os.path.join(self.config.user_data_dir, "storage_state.json")
if not os.path.exists(storage_path):
# Create parent directory if it doesn't exist
os.makedirs(os.path.dirname(storage_path), exist_ok=True)
with open(storage_path, "w") as f:
json.dump({}, f)
self.config.storage_state = storage_path
# Use the base class implementation
return await super().create_browser_context(crawlerRunConfig)
def _cleanup_expired_sessions(self):
"""Clean up expired sessions based on TTL."""