Add experimental whoami api endpoint

[ajm188]

Signed-off-by: Andrew Mason amason@slack-corp.com

Description

We're just pulling the actor out of the current request, assuming that the actor making this request is also the actor making other requests, for the purposes of the frontend.

I added a "dumb" authenticator to test both versions, which looks like:

diff --git a/go/vt/vtadmin/rbac/authentication.go b/go/vt/vtadmin/rbac/authentication.go
index a43dcbb2e1..f5cb42f86c 100644
--- a/go/vt/vtadmin/rbac/authentication.go
+++ b/go/vt/vtadmin/rbac/authentication.go
@@ -134,6 +134,19 @@ func RegisterAuthenticator(name string, f func() Authenticator) {
        authenticators[name] = f
 }
 
+type dumbAuthn struct{}
+
+func (authn *dumbAuthn) Authenticate(ctx context.Context) (*Actor, error) { return nil, nil }
+func (authn *dumbAuthn) AuthenticateHTTP(r *http.Request) (*Actor, error) {
+       return &Actor{"andrew", []string{"role1", "role2"}}, nil
+}
+
+func init() {
+       RegisterAuthenticator("dumb", func() Authenticator {
+               return &dumbAuthn{}
+       })
+}
+

Related Issue(s)

Checklist

• Should this PR be backported? no
• Tests were added or are not required no
• Documentation was added or is not required

Deployment Notes

[ajm188]

@doeg let me know if you want me to add struct tags to the Actor to make the Name and Roles fields lowercase json, or if it doesn't matter to you! (either is fine/easy ☺️ )

[doeg]

Thank you!!! :') If it's super easy to add struct tags for lowercase then that would tidy up the front-end a bit but if it's any more than like 1% effort it's ok!

Thanks for the lil fake auth example too.

[doeg]

🌻

[doeg]

I'm going to merge dis because I want to use it 😎