tree af494a36801a8feaa27544b280b3f56ec5c217c6
parent aaccbc9213b0974828f81aaac109d194880e3014
author Chris Broadfoot <cbro@golang.org> 1557273127 -0700
committer Chris Broadfoot <cbro@golang.org> 1559626489 +0000

google: add some metadata to GCE tokens to identify the token's source

This is required for the direct path feature, which only works with this
token source. It's not currently possible to determine the token source
type from the return value of FindDefaultCredentials.

Another option is to add another field to the Credentials struct, which
we could still do later, but direct path is currently pretty experimental
and whitelisted/opt-in, so I don't want to add to the public API surface
unnecessarily.

This CL functionally blocks
https://code-review.googlesource.com/c/google-api-go-client/+/40950

Change-Id: Ifb5fe9c6e5c6b33eebb87b45d3c70eebfca691b3
Reviewed-on: https://go-review.googlesource.com/c/oauth2/+/175877
Reviewed-by: Chris Broadfoot <cbro@golang.org>