Additional arguments for Сhrome

[b2ronn]

is it possible somehow to add extra arguments to launch chrome?

const browser = await chromium.launch({ 
  args : ['--host-resolver-rules="MAP * dev.com"']
});

step("load homepage", async () => {
    await page.goto('https://site.com');
});```

[vigneshshanmugam]

If the question was to invoke it via Synthetics agent, then yes you could use the CLI --playwright-options or use the synthetics.config.(js|ts) file -

synthetics/examples/todos/synthetics.config.ts

Line 8 in c500e52

playwrightOptions: {

If you are looking for from the Heartbeat side, then we have this issue which would add support for playwright options - elastic/beats#28197

[b2ronn]

if using cli does that mean using something like?
--playwright-options '{launchOptions: {args: [--host-resolver-rules="MAP * www.youtube.com"]}}'

[vigneshshanmugam]

It would be without the launchOptions key like this --playwright-options '{args: [--host-resolver-rules="MAP * www.youtube.com"]}'

[b2ronn]

when i try to run it through heartbeat through fleet i get an error

{"log.level":"warn","@timestamp":"2022-03-29T21:52:10.911Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":214},"message":"Error executing command '/usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{args: [--host-resolver-rules=\"MAP * www.youtube.com\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events' (1): exit status 1","service.name":"heartbeat","ecs.version":"1.6.0"}

[vigneshshanmugam]

Seems like a JSON parsing issue, Could you try this --playwright-options '{"args":["--host-resolver-rules=\"MAP * www.youtube.com\""]}'

[b2ronn]

if i specify via fleet

--playwright-options '{"args":["--host-resolver-rules=\"MAP * www.youtube.com\""]}'

i get an error

{"log.level":"info","@timestamp":"2022-03-29T23:15:28.300Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":153},"message":"Running command: /usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events in directory: ''","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2022-03-29T23:15:28.637Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":255},"message":"stderr: error: unknown option '--playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}''","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2022-03-29T23:15:28.641Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":206},"message":"Command has completed(1): /usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"warn","@timestamp":"2022-03-29T23:15:28.641Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":214},"message":"Error executing command '/usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events' (1): exit status 1","service.name":"heartbeat","ecs.version":"1.6.0"}

You can see the extra escaping of " and /. and then this string is not converted to json.

[vigneshshanmugam]

Seems like the version of Heartbeat that you are testing on does not the latest synthetics agent which understands that particular configuration. Could you tell me what was the version you are testing on and update HB and try again?

[b2ronn]

updated to latest version

image: 'docker.elastic.co/beats/elastic-agent-complete:8.1.1'

heartbeat--8.1.1[0e2c4c13-1eef-4be6-a180-081a6e094869]

/usr/share/elastic-agent/.node/node/bin/elastic-synthetics -V
1.0.0-beta.22

{"log.level":"info","@timestamp":"2022-03-30T09:04:28.891Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":153},"message":"Running command: /usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events in directory: ''","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2022-03-30T09:04:30.801Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":255},"message":"stderr: error: unknown option '--playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}''","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"info","@timestamp":"2022-03-30T09:04:30.886Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":206},"message":"Command has completed(1): /usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events","service.name":"heartbeat","ecs.version":"1.6.0"}
{"log.level":"warn","@timestamp":"2022-03-30T09:04:30.886Z","log.origin":{"file.name":"synthexec/synthexec.go","file.line":214},"message":"Error executing command '/usr/share/elastic-agent/.node/node/bin/elastic-synthetics elastic-synthetics --playwright-options '{\"args\":[\"--host-resolver-rules=\\\"MAP * www.youtube.com\\\"\"]}' --ignore-https-errors --screenshots on --throttling 5d/3u/20l --inline --rich-events' (1): exit status 1","service.name":"heartbeat","ecs.version":"1.6.0"}

[vigneshshanmugam]

@b2ronn Apologies for not catching this upfront, The synthetics_args is not a well documented flag, It takes a array of strings which is why the option you have set is interpreted differently and resulting in unknown option error.

Could you try separating the flag in this way

In the meanwhile, I will also test it on my side. Thanks.

[vigneshshanmugam]

Closing as we have a proper way to support this from HB - elastic/beats#31737