我在 AWS Lambda 中遇到了这个错误。看来 devtools websocket 没有启动。不知道如何修复它。有任何想法吗？谢谢你的时间。
异常源于get_ws_endpoint()websocket 响应超时https://github.com/pyppeteer/pyppeteer/blob/ad3a0a7da221a04425cbf0cc92e50e93883b077b/pyppeteer/launcher.py#L225
拉姆达代码：
import os
import json
import asyncio
import logging
import boto3
import pyppeteer
from pyppeteer import launch
logger = logging.getLogger()
logger.setLevel(logging.INFO)
pyppeteer.DEBUG = True # print suppressed errors as error log
def lambda_handler(event, context):
asyncio.get_event_loop().run_until_complete(main())
async def main():
browser = await launch({
'headless': True,
'args': [
'--no-sandbox'
]
})
page = await browser.newPage()
await page.goto('http://example.com')
await page.screenshot({'path': '/tmp/example.png'})
await browser.close()
return {
'statusCode': 200,
'body': json.dumps('Hello from Lambda!')
}
例外：
Response:
{
"errorMessage": "Browser closed unexpectedly:\n",
"errorType": "BrowserError",
"stackTrace": [
" File \"/var/task/lambda_handler.py\", line 23, in lambda_handler\n asyncio.get_event_loop().run_until_complete(main())\n",
" File \"/var/lang/lib/python3.8/asyncio/base_events.py\", line 616, in run_until_complete\n return future.result()\n",
" File \"/var/task/lambda_handler.py\", line 72, in main\n browser = await launch({\n",
" File \"/opt/python/pyppeteer/launcher.py\", line 307, in launch\n return await Launcher(options, **kwargs).launch()\n",
" File \"/opt/python/pyppeteer/launcher.py\", line 168, in launch\n self.browserWSEndpoint = get_ws_endpoint(self.url)\n",
" File \"/opt/python/pyppeteer/launcher.py\", line 227, in get_ws_endpoint\n raise BrowserError('Browser closed unexpectedly:\\n')\n"
]
}
Request ID:
"06be0620-8b5c-4600-a76e-bc785210244e"
Function Logs:
START RequestId: 06be0620-8b5c-4600-a76e-bc785210244e Version: $LATEST
---- files in /tmp ----
[W:pyppeteer.chromium_downloader] start chromium download.
Download may take a few minutes.
0%| | 0/108773488 [00:00<?, ?it/s]
11%|█▏ | 12267520/108773488 [00:00<00:00, 122665958.31it/s]
27%|██▋ | 29470720/108773488 [00:00<00:00, 134220418.14it/s]
42%|████▏ | 46172160/108773488 [00:00<00:00, 142570388.86it/s]
58%|█████▊ | 62607360/108773488 [00:00<00:00, 148471487.93it/s]
73%|███████▎ | 79626240/108773488 [00:00<00:00, 154371569.93it/s]
88%|████████▊ | 95754240/108773488 [00:00<00:00, 156353972.12it/s]
100%|██████████| 108773488/108773488 [00:00<00:00, 161750092.47it/s]
[W:pyppeteer.chromium_downloader]
chromium download done.
[W:pyppeteer.chromium_downloader] chromium extracted to: /tmp/local-chromium/588429
-----
/tmp/local-chromium/588429/chrome-linux/chrome
[ERROR] BrowserError: Browser closed unexpectedly:
Traceback (most recent call last):
File "/var/task/lambda_handler.py", line 23, in lambda_handler
asyncio.get_event_loop().run_until_complete(main())
File "/var/lang/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
return future.result()
File "/var/task/lambda_handler.py", line 72, in main
browser = await launch({
File "/opt/python/pyppeteer/launcher.py", line 307, in launch
return await Launcher(options, **kwargs).launch()
File "/opt/python/pyppeteer/launcher.py", line 168, in launch
self.browserWSEndpoint = get_ws_endpoint(self.url)
File "/opt/python/pyppeteer/launcher.py", line 227, in get_ws_endpoint
raise BrowserError('Browser closed unexpectedly:\n')END RequestId: 06be0620-8b5c-4600-a76e-bc785210244e
REPORT RequestId: 06be0620-8b5c-4600-a76e-bc785210244e Duration: 33370.61 ms Billed Duration: 33400 ms Memory Size: 3008 MB Max Memory Used: 481 MB Init Duration: 445.58 ms