Unable to get screenshot in headless Chrome

[olalob]

Hello,

I try to get a screenshot in headless Chrome (inside Docker) via

Screenshot screenshot = new AShot().shootingStrategy(ShootingStrategies.viewportPasting(10)).takeScreenshot(driver)

and on-time get the Execption:

java.lang.RuntimeException: Unexpected result for screenshot command: null
at org.openqa.selenium.remote.RemoteWebDriver.getScreenshotAs(RemoteWebDriver.java:391)
at ru.yandex.qatools.ashot.shooting.SimpleShootingStrategy.getScreenshot(SimpleShootingStrategy.java:31)
at ru.yandex.qatools.ashot.shooting.ViewportPastingDecorator.getScreenshot(ViewportPastingDecorator.java:53)
at ru.yandex.qatools.ashot.shooting.ViewportPastingDecorator.getScreenshot(ViewportPastingDecorator.java:35)
at ru.yandex.qatools.ashot.AShot.takeScreenshot(AShot.java:145)

and next time another:

java.lang.NullPointerException
at ru.yandex.qatools.ashot.shooting.ViewportPastingDecorator.getCurrentScrollY(ViewportPastingDecorator.java:80)
at ru.yandex.qatools.ashot.shooting.ViewportPastingDecorator.getScreenshot(ViewportPastingDecorator.java:54)
at ru.yandex.qatools.ashot.shooting.ViewportPastingDecorator.getScreenshot(ViewportPastingDecorator.java:35)
at ru.yandex.qatools.ashot.AShot.takeScreenshot(AShot.java:145)

but never without error :(

Maybe I must use another Strategy? Without ViewPortPasting I get no errors, but the created screenshot has only the viewable part of page without scrolling.

Could You please help me?
Thanks.

[olalob]

if You need my system info:

• Ubuntu 16.04 64-bit
• Chrome Version 59.0.3071.115 (Official Build) (64-bit)
• Chrome Driver 2.30
• Selenium 3.4.0
• Java 8.0_131

[pazone]

Hi, @olalob Could you please provide the docker image which is used for it?

[olalob]

Hello @pazone, here is my Docker file (sorry comments are formatted as headers here):

FROM ubuntu:xenial

Update & upgrade system

RUN apt-get update &&
apt-get upgrade -yq

Install required packages

RUN apt-get install -yq wget ca-certificates openjdk-8-jre-headless

Install Chrome

RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - &&
sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' &&
apt-get update &&
apt-get install -yq google-chrome-stable

Install international fonts

RUN apt-get install -yq fonts-arphic-ukai fonts-arphic-uming fonts-ipafont-mincho fonts-ipafont-gothic fonts-unfonts-core

Installation cleanup

RUN apt-get clean &&
rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

Create data directory

RUN mkdir /data
WORKDIR /data

Add chrome user

RUN addgroup chrome &&
useradd -m -g chrome chrome
USER chrome

Expose Chrome remote debugging port

EXPOSE 9222

[pazone]

Have you tried to use common image from here or here?
I don't see anything like xvfb in you Dockerfile. It looks like it has no graphic environment.
What's the purpose of custom docker image?

[pazone]

So, the solution is to use common docker image or to add xvfb. It will help. Good luck!

[olalob]

Thanks! I try Your suggestion.

[GrzegorzDrozd]

But purpose of headless chrome (that has been added recently) is to eliminate need of xvfb. Can you please fix that.

…

On Aug 23, 2017 7:30 PM, "olalob" ***@***.***> wrote: Thanks! I try Your suggestion. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#103 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABzD0ThBb_v2M5uh-_3aHJFx7GvYUDQbks5sbGHOgaJpZM4Oea9v> .