Karim shoair
ef8c5bc7d6
- User passes a single proxy to the browser session, and it will keep using the same context. Pass a proxy manager that automatically refreshes the IP with each proxy, and you get speed but sacrifice some stealth. - User imports the proxy rotator class and passes proxies to it and a rotation strategy (Round robin by default). Then pass the instance to the session class, which will create a context and a tab for each proxy returned by the rotator. This way, you sacrifice speed a bit, but you get maximum stealth since each context is created with the proxy that will be used. - Normal requests use what you pass without issues, of course. - All errors are retried now, and proxies are rotated on retries automatically.
348 lines
21 KiB
Python
348 lines
21 KiB
Python
from time import sleep as time_sleep
|
|
from asyncio import sleep as asyncio_sleep
|
|
|
|
from playwright.sync_api import (
|
|
Locator,
|
|
sync_playwright,
|
|
)
|
|
from playwright.async_api import (
|
|
async_playwright,
|
|
Locator as AsyncLocator,
|
|
BrowserContext as AsyncBrowserContext,
|
|
)
|
|
|
|
from scrapling.core.utils import log
|
|
from scrapling.core._types import Unpack
|
|
from scrapling.engines.toolbelt.proxy_rotation import is_proxy_error
|
|
from scrapling.engines.toolbelt.convertor import Response, ResponseFactory
|
|
from scrapling.engines.toolbelt.fingerprints import generate_convincing_referer
|
|
from scrapling.engines._browsers._types import PlaywrightSession, PlaywrightFetchParams
|
|
from scrapling.engines._browsers._base import SyncSession, AsyncSession, DynamicSessionMixin
|
|
from scrapling.engines._browsers._validators import validate_fetch as _validate, PlaywrightConfig
|
|
|
|
|
|
class DynamicSession(SyncSession, DynamicSessionMixin):
|
|
"""A Browser session manager with page pooling."""
|
|
|
|
__slots__ = (
|
|
"_config",
|
|
"_context_options",
|
|
"_browser_options",
|
|
"_user_data_dir",
|
|
"_headers_keys",
|
|
"max_pages",
|
|
"page_pool",
|
|
"_max_wait_for_page",
|
|
"playwright",
|
|
"context",
|
|
)
|
|
|
|
def __init__(self, **kwargs: Unpack[PlaywrightSession]):
|
|
"""A Browser session manager with page pooling, it's using a persistent browser Context by default with a temporary user profile directory.
|
|
|
|
:param headless: Run the browser in headless/hidden (default), or headful/visible mode.
|
|
:param disable_resources: Drop requests for unnecessary resources for a speed boost.
|
|
Requests dropped are of type `font`, `image`, `media`, `beacon`, `object`, `imageset`, `texttrack`, `websocket`, `csp_report`, and `stylesheet`.
|
|
:param useragent: Pass a useragent string to be used. Otherwise the fetcher will generate a real Useragent of the same browser and use it.
|
|
:param cookies: Set cookies for the next request.
|
|
:param network_idle: Wait for the page until there are no network connections for at least 500 ms.
|
|
:param timeout: The timeout in milliseconds that is used in all operations and waits through the page. The default is 30,000
|
|
:param wait: The time (milliseconds) the fetcher will wait after everything finishes before closing the page and returning the ` Response ` object.
|
|
:param page_action: Added for automation. A function that takes the `page` object and does the automation you need.
|
|
:param wait_selector: Wait for a specific CSS selector to be in a specific state.
|
|
:param init_script: An absolute path to a JavaScript file to be executed on page creation for all pages in this session.
|
|
:param locale: Specify user locale, for example, `en-GB`, `de-DE`, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting
|
|
rules. Defaults to the system default locale.
|
|
:param timezone_id: Changes the timezone of the browser. Defaults to the system timezone.
|
|
:param wait_selector_state: The state to wait for the selector given with `wait_selector`. The default state is `attached`.
|
|
:param real_chrome: If you have a Chrome browser installed on your device, enable this, and the Fetcher will launch an instance of your browser and use it.
|
|
:param load_dom: Enabled by default, wait for all JavaScript on page(s) to fully load and execute.
|
|
:param cdp_url: Instead of launching a new browser instance, connect to this CDP URL to control real browsers through CDP.
|
|
:param google_search: Enabled by default, Scrapling will set the referer header to be as if this request came from a Google search of this website's domain name.
|
|
:param extra_headers: A dictionary of extra headers to add to the request. _The referer set by the `google_search` argument takes priority over the referer set here if used together._
|
|
:param proxy: The proxy to be used with requests, it can be a string or a dictionary with the keys 'server', 'username', and 'password' only.
|
|
:param user_data_dir: Path to a User Data Directory, which stores browser session data like cookies and local storage. The default is to create a temporary directory.
|
|
:param extra_flags: A list of additional browser flags to pass to the browser on launch.
|
|
:param selector_config: The arguments that will be passed in the end while creating the final Selector's class.
|
|
:param additional_args: Additional arguments to be passed to Playwright's context as additional settings, and it takes higher priority than Scrapling's settings.
|
|
"""
|
|
self.__validate__(**kwargs)
|
|
super().__init__()
|
|
|
|
def start(self):
|
|
"""Create a browser for this instance and context."""
|
|
if not self.playwright:
|
|
self.playwright = sync_playwright().start()
|
|
|
|
try:
|
|
if self._config.cdp_url: # pragma: no cover
|
|
self.browser = self.playwright.chromium.connect_over_cdp(endpoint_url=self._config.cdp_url)
|
|
if not self._config.proxy_rotator and self.browser:
|
|
self.context = self.browser.new_context(**self._context_options)
|
|
elif self._config.proxy_rotator:
|
|
self.browser = self.playwright.chromium.launch(**self._browser_options)
|
|
else:
|
|
persistent_options = (
|
|
self._browser_options | self._context_options | {"user_data_dir": self._user_data_dir}
|
|
)
|
|
self.context = self.playwright.chromium.launch_persistent_context(**persistent_options)
|
|
|
|
if self.context:
|
|
self.context = self._initialize_context(self._config, self.context)
|
|
|
|
self._is_alive = True
|
|
except Exception:
|
|
# Clean up playwright if browser setup fails
|
|
self.playwright.stop()
|
|
self.playwright = None
|
|
raise
|
|
else:
|
|
raise RuntimeError("Session has been already started")
|
|
|
|
def fetch(self, url: str, **kwargs: Unpack[PlaywrightFetchParams]) -> Response:
|
|
"""Opens up the browser and do your request based on your chosen options.
|
|
|
|
:param url: The Target url.
|
|
:param google_search: Enabled by default, Scrapling will set the referer header to be as if this request came from a Google search of this website's domain name.
|
|
:param timeout: The timeout in milliseconds that is used in all operations and waits through the page. The default is 30,000
|
|
:param wait: The time (milliseconds) the fetcher will wait after everything finishes before closing the page and returning the ` Response ` object.
|
|
:param page_action: Added for automation. A function that takes the `page` object and does the automation you need.
|
|
:param extra_headers: A dictionary of extra headers to add to the request. _The referer set by the `google_search` argument takes priority over the referer set here if used together._
|
|
:param disable_resources: Drop requests for unnecessary resources for a speed boost.
|
|
Requests dropped are of type `font`, `image`, `media`, `beacon`, `object`, `imageset`, `texttrack`, `websocket`, `csp_report`, and `stylesheet`.
|
|
:param wait_selector: Wait for a specific CSS selector to be in a specific state.
|
|
:param wait_selector_state: The state to wait for the selector given with `wait_selector`. The default state is `attached`.
|
|
:param network_idle: Wait for the page until there are no network connections for at least 500 ms.
|
|
:param load_dom: Enabled by default, wait for all JavaScript on page(s) to fully load and execute.
|
|
:param selector_config: The arguments that will be passed in the end while creating the final Selector's class.
|
|
:return: A `Response` object.
|
|
"""
|
|
params = _validate(kwargs, self, PlaywrightConfig)
|
|
if not self._is_alive: # pragma: no cover
|
|
raise RuntimeError("Context manager has been closed")
|
|
|
|
request_headers_keys = {h.lower() for h in params.extra_headers.keys()} if params.extra_headers else set()
|
|
referer = (
|
|
generate_convincing_referer(url)
|
|
if (params.google_search and "referer" not in request_headers_keys)
|
|
else None
|
|
)
|
|
|
|
for attempt in range(self._config.retries):
|
|
proxy = self._config.proxy_rotator.get_proxy() if self._config.proxy_rotator else None
|
|
|
|
with self._page_generator(
|
|
params.timeout, params.extra_headers, params.disable_resources, proxy
|
|
) as page_info:
|
|
final_response = [None]
|
|
page = page_info.page
|
|
page.on("response", self._create_response_handler(page_info, final_response))
|
|
|
|
try:
|
|
first_response = page.goto(url, referer=referer)
|
|
self._wait_for_page_stability(page, params.load_dom, params.network_idle)
|
|
|
|
if not first_response:
|
|
raise RuntimeError(f"Failed to get response for {url}")
|
|
|
|
if params.page_action:
|
|
try:
|
|
_ = params.page_action(page)
|
|
except Exception as e: # pragma: no cover
|
|
log.error(f"Error executing page_action: {e}")
|
|
|
|
if params.wait_selector:
|
|
try:
|
|
waiter: Locator = page.locator(params.wait_selector)
|
|
waiter.first.wait_for(state=params.wait_selector_state)
|
|
self._wait_for_page_stability(page, params.load_dom, params.network_idle)
|
|
except Exception as e: # pragma: no cover
|
|
log.error(f"Error waiting for selector {params.wait_selector}: {e}")
|
|
|
|
page.wait_for_timeout(params.wait)
|
|
|
|
response = ResponseFactory.from_playwright_response(
|
|
page, first_response, final_response[0], params.selector_config
|
|
)
|
|
return response
|
|
|
|
except Exception as e:
|
|
page_info.mark_error()
|
|
if attempt < self._config.retries - 1:
|
|
if is_proxy_error(e):
|
|
log.warning(
|
|
f"Proxy '{proxy}' failed (attempt {attempt + 1}) | Retrying in {self._config.retry_delay}s..."
|
|
)
|
|
else:
|
|
log.warning(
|
|
f"Attempt {attempt + 1} failed: {e}. Retrying in {self._config.retry_delay}s..."
|
|
)
|
|
time_sleep(self._config.retry_delay)
|
|
else:
|
|
log.error(f"Failed after {self._config.retries} attempts: {e}")
|
|
raise
|
|
|
|
raise RuntimeError("Request failed") # pragma: no cover
|
|
|
|
|
|
class AsyncDynamicSession(AsyncSession, DynamicSessionMixin):
|
|
"""An async Browser session manager with page pooling, it's using a persistent browser Context by default with a temporary user profile directory."""
|
|
|
|
__slots__ = (
|
|
"_config",
|
|
"_context_options",
|
|
"_browser_options",
|
|
"_user_data_dir",
|
|
"_headers_keys",
|
|
)
|
|
|
|
def __init__(self, **kwargs: Unpack[PlaywrightSession]):
|
|
"""A Browser session manager with page pooling
|
|
|
|
:param headless: Run the browser in headless/hidden (default), or headful/visible mode.
|
|
:param disable_resources: Drop requests for unnecessary resources for a speed boost.
|
|
Requests dropped are of type `font`, `image`, `media`, `beacon`, `object`, `imageset`, `texttrack`, `websocket`, `csp_report`, and `stylesheet`.
|
|
:param useragent: Pass a useragent string to be used. Otherwise the fetcher will generate a real Useragent of the same browser and use it.
|
|
:param cookies: Set cookies for the next request.
|
|
:param network_idle: Wait for the page until there are no network connections for at least 500 ms.
|
|
:param load_dom: Enabled by default, wait for all JavaScript on page(s) to fully load and execute.
|
|
:param timeout: The timeout in milliseconds that is used in all operations and waits through the page. The default is 30,000
|
|
:param wait: The time (milliseconds) the fetcher will wait after everything finishes before closing the page and returning the ` Response ` object.
|
|
:param page_action: Added for automation. A function that takes the `page` object and does the automation you need.
|
|
:param wait_selector: Wait for a specific CSS selector to be in a specific state.
|
|
:param init_script: An absolute path to a JavaScript file to be executed on page creation for all pages in this session.
|
|
:param locale: Specify user locale, for example, `en-GB`, `de-DE`, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting
|
|
rules. Defaults to the system default locale.
|
|
:param timezone_id: Changes the timezone of the browser. Defaults to the system timezone.
|
|
:param wait_selector_state: The state to wait for the selector given with `wait_selector`. The default state is `attached`.
|
|
:param real_chrome: If you have a Chrome browser installed on your device, enable this, and the Fetcher will launch an instance of your browser and use it.
|
|
:param cdp_url: Instead of launching a new browser instance, connect to this CDP URL to control real browsers through CDP.
|
|
:param google_search: Enabled by default, Scrapling will set the referer header to be as if this request came from a Google search of this website's domain name.
|
|
:param extra_headers: A dictionary of extra headers to add to the request. _The referer set by the `google_search` argument takes priority over the referer set here if used together._
|
|
:param proxy: The proxy to be used with requests, it can be a string or a dictionary with the keys 'server', 'username', and 'password' only.
|
|
:param max_pages: The maximum number of tabs to be opened at the same time. It will be used in rotation through a PagePool.
|
|
:param user_data_dir: Path to a User Data Directory, which stores browser session data like cookies and local storage. The default is to create a temporary directory.
|
|
:param extra_flags: A list of additional browser flags to pass to the browser on launch.
|
|
:param selector_config: The arguments that will be passed in the end while creating the final Selector's class.
|
|
:param additional_args: Additional arguments to be passed to Playwright's context as additional settings, and it takes higher priority than Scrapling's settings.
|
|
"""
|
|
self.__validate__(**kwargs)
|
|
super().__init__(max_pages=self._config.max_pages)
|
|
|
|
async def start(self):
|
|
"""Create a browser for this instance and context."""
|
|
if not self.playwright:
|
|
self.playwright = await async_playwright().start()
|
|
try:
|
|
if self._config.cdp_url:
|
|
self.browser = await self.playwright.chromium.connect_over_cdp(endpoint_url=self._config.cdp_url)
|
|
if not self._config.proxy_rotator and self.browser:
|
|
self.context: AsyncBrowserContext = await self.browser.new_context(**self._context_options)
|
|
elif self._config.proxy_rotator:
|
|
self.browser = await self.playwright.chromium.launch(**self._browser_options)
|
|
else:
|
|
persistent_options = (
|
|
self._browser_options | self._context_options | {"user_data_dir": self._user_data_dir}
|
|
)
|
|
self.context: AsyncBrowserContext = await self.playwright.chromium.launch_persistent_context(
|
|
**persistent_options
|
|
)
|
|
|
|
if self.context:
|
|
self.context = await self._initialize_context(self._config, self.context)
|
|
|
|
self._is_alive = True
|
|
except Exception:
|
|
# Clean up playwright if browser setup fails
|
|
await self.playwright.stop()
|
|
self.playwright = None
|
|
raise
|
|
else:
|
|
raise RuntimeError("Session has been already started")
|
|
|
|
async def fetch(self, url: str, **kwargs: Unpack[PlaywrightFetchParams]) -> Response:
|
|
"""Opens up the browser and do your request based on your chosen options.
|
|
|
|
:param url: The Target url.
|
|
:param google_search: Enabled by default, Scrapling will set the referer header to be as if this request came from a Google search of this website's domain name.
|
|
:param timeout: The timeout in milliseconds that is used in all operations and waits through the page. The default is 30,000
|
|
:param wait: The time (milliseconds) the fetcher will wait after everything finishes before closing the page and returning the ` Response ` object.
|
|
:param page_action: Added for automation. A function that takes the `page` object and does the automation you need.
|
|
:param extra_headers: A dictionary of extra headers to add to the request. _The referer set by the `google_search` argument takes priority over the referer set here if used together._
|
|
:param disable_resources: Drop requests for unnecessary resources for a speed boost.
|
|
Requests dropped are of type `font`, `image`, `media`, `beacon`, `object`, `imageset`, `texttrack`, `websocket`, `csp_report`, and `stylesheet`.
|
|
:param wait_selector: Wait for a specific CSS selector to be in a specific state.
|
|
:param wait_selector_state: The state to wait for the selector given with `wait_selector`. The default state is `attached`.
|
|
:param network_idle: Wait for the page until there are no network connections for at least 500 ms.
|
|
:param load_dom: Enabled by default, wait for all JavaScript on page(s) to fully load and execute.
|
|
:param selector_config: The arguments that will be passed in the end while creating the final Selector's class.
|
|
:return: A `Response` object.
|
|
"""
|
|
params = _validate(kwargs, self, PlaywrightConfig)
|
|
|
|
if not self._is_alive: # pragma: no cover
|
|
raise RuntimeError("Context manager has been closed")
|
|
|
|
request_headers_keys = {h.lower() for h in params.extra_headers.keys()} if params.extra_headers else set()
|
|
referer = (
|
|
generate_convincing_referer(url)
|
|
if (params.google_search and "referer" not in request_headers_keys)
|
|
else None
|
|
)
|
|
|
|
for attempt in range(self._config.retries):
|
|
proxy = self._config.proxy_rotator.get_proxy() if self._config.proxy_rotator else None
|
|
|
|
async with self._page_generator(
|
|
params.timeout, params.extra_headers, params.disable_resources, proxy
|
|
) as page_info:
|
|
final_response = [None]
|
|
page = page_info.page
|
|
page.on("response", self._create_response_handler(page_info, final_response))
|
|
|
|
try:
|
|
first_response = await page.goto(url, referer=referer)
|
|
await self._wait_for_page_stability(page, params.load_dom, params.network_idle)
|
|
|
|
if not first_response:
|
|
raise RuntimeError(f"Failed to get response for {url}")
|
|
|
|
if params.page_action:
|
|
try:
|
|
_ = await params.page_action(page)
|
|
except Exception as e: # pragma: no cover
|
|
log.error(f"Error executing page_action: {e}")
|
|
|
|
if params.wait_selector:
|
|
try:
|
|
waiter: AsyncLocator = page.locator(params.wait_selector)
|
|
await waiter.first.wait_for(state=params.wait_selector_state)
|
|
await self._wait_for_page_stability(page, params.load_dom, params.network_idle)
|
|
except Exception as e: # pragma: no cover
|
|
log.error(f"Error waiting for selector {params.wait_selector}: {e}")
|
|
|
|
await page.wait_for_timeout(params.wait)
|
|
|
|
response = await ResponseFactory.from_async_playwright_response(
|
|
page, first_response, final_response[0], params.selector_config
|
|
)
|
|
return response
|
|
|
|
except Exception as e:
|
|
page_info.mark_error()
|
|
if attempt < self._config.retries - 1:
|
|
if is_proxy_error(e):
|
|
log.warning(
|
|
f"Proxy '{proxy}' failed (attempt {attempt + 1}) | Retrying in {self._config.retry_delay}s..."
|
|
)
|
|
else:
|
|
log.warning(
|
|
f"Attempt {attempt + 1} failed: {e}. Retrying in {self._config.retry_delay}s..."
|
|
)
|
|
await asyncio_sleep(self._config.retry_delay)
|
|
else:
|
|
log.error(f"Failed after {self._config.retries} attempts: {e}")
|
|
raise
|
|
|
|
raise RuntimeError("Request failed") # pragma: no cover
|