class PlaywrightContextManager:
def __init__(self) -> None:
self._playwright: SyncPlaywright
def __enter__(self) -> SyncPlaywright:
loop: asyncio.AbstractEventLoop
own_loop = None
try:
loop = asyncio.get_running_loop()
except RuntimeError:
loop = asyncio.new_event_loop()
own_loop = loop
if loop.is_running():
raise Error(
"""It looks like you are using Playwright Sync API inside the asyncio loop.
Please use the Async API instead.""")
def greenlet_main() -> None:
loop.run_until_complete(self._connection.run_as_sync())
if own_loop:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
global dispatcher_fiber
dispatcher_fiber = greenlet(greenlet_main)
self._connection = Connection(
dispatcher_fiber,
create_remote_object,
PipeTransport(loop, compute_driver_executable()),
loop,
)
g_self = greenlet.getcurrent()
def callback_wrapper(playwright_impl: Playwright) -> None:
self._playwright = SyncPlaywright(playwright_impl)
g_self.switch()
self._connection.call_on_object_with_known_name(
"Playwright", callback_wrapper)
dispatcher_fiber.switch()
playwright = self._playwright
playwright.stop = self.__exit__ # type: ignore
return playwright
def start(self) -> SyncPlaywright:
return self.__enter__()
def __exit__(self, *args: Any) -> None:
self._connection.stop_sync()
class PlaywrightContextManager:
def __init__(self) -> None:
self._playwright: SyncPlaywright
def __enter__(self) -> SyncPlaywright:
def greenlet_main() -> None:
loop = None
own_loop = None
try:
loop = asyncio.get_running_loop()
except RuntimeError:
loop = asyncio.new_event_loop()
own_loop = loop
if loop.is_running():
raise Error("Can only run one Playwright at a time.")
loop.run_until_complete(self._connection.run_as_sync())
if own_loop:
loop.run_until_complete(loop.shutdown_asyncgens())
loop.close()
dispatcher_fiber = greenlet(greenlet_main)
self._connection = Connection(dispatcher_fiber, create_remote_object,
compute_driver_executable())
g_self = greenlet.getcurrent()
def callback_wrapper(playwright_impl: Playwright) -> None:
self._playwright = SyncPlaywright(playwright_impl)
g_self.switch()
self._connection.call_on_object_with_known_name(
"Playwright", callback_wrapper)
dispatcher_fiber.switch()
playwright = self._playwright
playwright.stop = self.__exit__ # type: ignore
return playwright
def start(self) -> SyncPlaywright:
return self.__enter__()
def __exit__(self, *args: Any) -> None:
self._connection.stop_sync()
class PlaywrightContextManager:
def __init__(self) -> None:
self._playwright: SyncPlaywright
self._loop: asyncio.AbstractEventLoop
self._own_loop = False
self._watcher: Optional[asyncio.AbstractChildWatcher] = None
def __enter__(self) -> SyncPlaywright:
try:
self._loop = asyncio.get_running_loop()
except RuntimeError:
self._loop = asyncio.new_event_loop()
self._own_loop = True
if self._loop.is_running():
raise Error(
"""It looks like you are using Playwright Sync API inside the asyncio loop.
Please use the Async API instead.""")
# In Python 3.7, asyncio.Process.wait() hangs because it does not use ThreadedChildWatcher
# which is used in Python 3.8+. This is unix specific and also takes care about
# cleaning up zombie processes. See https://bugs.python.org/issue35621
if (sys.version_info[0] == 3 and sys.version_info[1] == 7
and sys.platform != "win32" and isinstance(
asyncio.get_child_watcher(), asyncio.SafeChildWatcher)):
from ._py37ThreadedChildWatcher import ThreadedChildWatcher # type: ignore
self._watcher = ThreadedChildWatcher()
asyncio.set_child_watcher(self._watcher) # type: ignore
# Create a new fiber for the protocol dispatcher. It will be pumping events
# until the end of times. We will pass control to that fiber every time we
# block while waiting for a response.
def greenlet_main() -> None:
self._loop.run_until_complete(self._connection.run_as_sync())
dispatcher_fiber = greenlet(greenlet_main)
self._connection = Connection(
dispatcher_fiber,
create_remote_object,
PipeTransport(self._loop, compute_driver_executable()),
self._loop,
)
g_self = greenlet.getcurrent()
def callback_wrapper(playwright_impl: Playwright) -> None:
self._playwright = SyncPlaywright(playwright_impl)
g_self.switch()
# Switch control to the dispatcher, it'll fire an event and pass control to
# the calling greenlet.
self._connection.call_on_object_with_known_name(
"Playwright", callback_wrapper)
dispatcher_fiber.switch()
playwright = self._playwright
playwright.stop = self.__exit__ # type: ignore
return playwright
def start(self) -> SyncPlaywright:
return self.__enter__()
def __exit__(self, *args: Any) -> None:
self._connection.stop_sync()
if self._watcher:
self._watcher.close()
if self._own_loop:
tasks = asyncio.all_tasks(self._loop)
for t in [t for t in tasks if not (t.done() or t.cancelled())]:
t.cancel()
self._loop.run_until_complete(self._loop.shutdown_asyncgens())
self._loop.close()
