Uses the metadata service available on GCE VMs to fetch an access token.
credentials_gce(scopes = NULL, service_account = "default", ...)
A character vector of scopes to request. Pick from those listed at https://developers.google.com/identity/protocols/googlescopes.
For certain token flows, the
"https://www.googleapis.com/auth/userinfo.email"
scope is unconditionally
included. This grants permission to retrieve the email address associated
with a token; gargle uses this to index cached OAuth tokens. This grants no
permission to view or send email. It is considered a low value scope and
does not appear on the consent screen.
Name of the GCE service account to use.
Additional arguments passed to all credential functions.
A GceToken()
or NULL
.
https://cloud.google.com/compute/docs/storing-retrieving-metadata
Other credential functions: credentials_app_default
,
credentials_byo_oauth2
,
credentials_service_account
,
credentials_user_oauth2
,
token_fetch
# NOT RUN {
credentials_gce()
# }
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