Pyppeteer:浏览器在AWS Lambda中意外关闭 [英] Pyppeteer: Browser closed unexpectedly in AWS Lambda

问题描述

我在AWS Lambda中遇到此错误.看来devtools websocket尚未启动.不知道如何解决它.有任何想法吗?谢谢您的宝贵时间.

I'm running into this error in AWS Lambda. It appears that the devtools websocket is not up. Not sure how to fix it. Any ideas? Thanks for your time.

由于websocket响应超时而导致get_ws_endpoint()异常 https://github.com/pyppeteer/pyppeteer/blob/ad3a0a7da221a04425cbf0cc92e50e93883b077b/pyppeteer/launcher.py#L225

Exception originated from get_ws_endpoint() due to websocket response timeout https://github.com/pyppeteer/pyppeteer/blob/ad3a0a7da221a04425cbf0cc92e50e93883b077b/pyppeteer/launcher.py#L225

Lambda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    

推荐答案

回答我自己的问题.

最后，在将铬二进制文件捆绑在lambda层中之后，我能够使用Python 3.6和3.7(不是3.8)运行Pyppeteer(v0.2.2).

Finally I was able to run Pyppeteer(v0.2.2) with Python 3.6 and 3.7 (not 3.8) after I bundled chromium binary in a lambda layer.

因此，总而言之，它似乎仅在其配置为使用用户提供的Chrome可执行文件路径而非自动下载的chrome时运行.可能是某些比赛条件或其他原因.

So in summary, it appears to work only when its configured to run with user provided chromium executable path and not with automatically downloaded chrome. Probably some race condition or something.

从 https://github.com/adieuadieu/serverless-chrome/releases/download/v1.0.0-41/stable-headless-chromium-amazonlinux-2017-03.zip

browser = await launch(
        headless=True, 
        executablePath='/opt/python/headless-chromium',
        args=[
            '--no-sandbox',
            '--single-process',
            '--disable-dev-shm-usage',
            '--disable-gpu',
            '--no-zygote'
        ])

发布在回购上的问题>://://github.com/pyppeteer/pyppeteer/issues/108

这篇关于Pyppeteer:浏览器在AWS Lambda中意外关闭的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！