[Google Maps Places] - ADC - Impersonating Service Account failing

[shaunmitchellve]

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A screenshot that you have tested with "Try this API".

Link to the code that reproduces this issue. A link to a public Github Repository or gist with a minimal reproduction.

https://gist.github.com/shaunmitchellve/40cf10cd968ce19e29a50133d8fb3f3a

A step-by-step description of how to reproduce the issue, based on the linked reproduction.

1. Run gcloud auth application-default login --impersonate-service-account <SA-EMAIL>
2. Run the code node test.mjs

This returns the error 400 undefined: Getting metadata from plugin failed with error: INVALID_ARGUMENT: unable to impersonate: Request contains an invalid argument.

When running code that utilizes the impersonation like Google Cloud SignedURLs for Storage Buckets it works fine.

application_default_credentials.json
{ "delegates": [], "service_account_impersonation_url": "https://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/[REDACTED]@[REDACTED].iam.gserviceaccount.com:generateAccessToken", "source_credentials": { "account": "", "client_id": "[REDACTED]", "client_secret": "[REDACTED]", "refresh_token": "[REDACTED]", "type": "authorized_user", "universe_domain": "googleapis.com" }, "type": "impersonated_service_account" }

A clear and concise description of what the bug is, and what you expected to happen.

When running the Places Client using Application Default Credentials the simple / sample code runs fine, however when impersonating a service account the GAX code seems to be not setup properly.

A clear and concise description WHY you expect this behavior, i.e., was it a recent change, there is documentation that points to this behavior, etc. **

Impersonating a service account using ADC is a common practice and in some cases it's required for the application if it uses Google Cloud Storage Signed URLs.

[github-actions]

Issue was opened with an invalid reproduction link. Please make sure the repository is a valid, publicly-accessible github repository, and make sure the url is complete (example: https://github.com/googleapis/google-cloud-node)

[shaunmitchellve]

Re-opening as the reproduction link is a public gist

https://gist.github.com/shaunmitchellve/40cf10cd968ce19e29a50133d8fb3f3a

You need to fix your GitHub actions as they are auto-closing issues that are correct and follow the template.