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fix headless rendering with latest chrome #361

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fix headless rendering with latest chrome #361

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f7faef7
fix error on retrieving result
rafique Jan 2, 2021
0a230ee
clean up
rafique Jan 5, 2021
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26 changes: 21 additions & 5 deletions ipyvolume/headless.py
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,20 @@ def _screenshot_data(
# else:
# assert isinstance(fig, ipv.Figure)

chrome = PyChromeDevTools.ChromeInterface(headless_kwargs)

try:
host = "localhost"
port = 9222

if headless_kwargs.get("host"):
host = headless_kwargs.get("host")

chrome = PyChromeDevTools.ChromeInterface(host=host, port=port)
#chrome = PyChromeDevTools.ChromeInterface(host="localhost")
except:
print("Falied to connect to headless chrome, please make sure it's running on host={} and port={}".format(host, port))
raise

chrome.Network.enable()
chrome.Page.enable()
chrome.Page.navigate(url=html_filename)
Expand All @@ -59,16 +72,19 @@ def _screenshot_data(
result = chrome.Runtime.evaluate(expression='ipvss()')
tries = 0
while tries < 10:
#print(str(result))
try:
url = result['result']['result']['value']
url = result[0]['result']['result']['value']
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@maartenbreddels maartenbreddels Jan 4, 2021

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why did this change, and which version, and can we make it detect this? so it also works on older versions?

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@rafique rafique Jan 5, 2021 •
edited
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Actually I don't know why/when this has changed. This seems to work fine but recently throwing the following error: "tuple indices must be integers or slices, not str". This is the main reason prompting this pull request. Since there has been no recent update to ipyvolume python module, my guess is that something else (chrome/ipyvolume js module/threejs) has been updated

return url
except:
if 'ipvss' in result['result']['result']['description']:
except Exception as ex:
#print(str(ex))
#raise ex
if 'ipvss' in result[0]['result']['result']['description']:
tries += 1
time.sleep(0.5)
else:
print('error getting result, return value was:', result)
raise
raise ex


def _main():
Expand Down