78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
# Copyright (c) Microsoft Corporation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import asyncio
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from typing import Dict, Optional, cast
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from pyee.asyncio import AsyncIOEventEmitter
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from playwright._impl._connection import Channel
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from playwright._impl._errors import TargetClosedError
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from playwright._impl._helper import Error, ParsedMessagePayload
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from playwright._impl._transport import Transport
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class JsonPipeTransport(AsyncIOEventEmitter, Transport):
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def __init__(
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self,
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loop: asyncio.AbstractEventLoop,
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pipe_channel: Channel,
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) -> None:
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super().__init__(loop)
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Transport.__init__(self, loop)
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self._stop_requested = False
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self._pipe_channel = pipe_channel
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def request_stop(self) -> None:
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self._stop_requested = True
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self._pipe_channel.send_no_reply("close", None, {})
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def dispose(self) -> None:
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self.on_error_future.cancel()
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self._stopped_future.cancel()
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async def wait_until_stopped(self) -> None:
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await self._stopped_future
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async def connect(self) -> None:
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self._stopped_future: asyncio.Future = asyncio.Future()
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def handle_message(message: Dict) -> None:
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if self._stop_requested:
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return
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self.on_message(cast(ParsedMessagePayload, message))
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def handle_closed(reason: Optional[str]) -> None:
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self.emit("close", reason)
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if reason:
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self.on_error_future.set_exception(TargetClosedError(reason))
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self._stopped_future.set_result(None)
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self._pipe_channel.on(
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"message",
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lambda params: handle_message(params["message"]),
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)
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self._pipe_channel.on(
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"closed",
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lambda params: handle_closed(params.get("reason")),
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)
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async def run(self) -> None:
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await self._stopped_future
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def send(self, message: Dict) -> None:
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if self._stop_requested:
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raise Error("Playwright connection closed")
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self._pipe_channel.send_no_reply("send", None, {"message": message})
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