Configure Google Service Account Authentication for REST

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Demonstrates Rest.SetAuthGoogle, which associates an AuthGoogle provider so Chilkat supplies a Google OAuth 2.0 bearer token on each request. The provider is configured with a service account JSON key and the required OAuth scope.

The file path is relative to the application's current working directory. An absolute path may also be used. Supply the path appropriate to your own environment.

Dim success As Boolean = False

Dim rest As ChilkatRest
rest.Initialize("rest")
Dim bTls As Boolean = True
Dim bAutoReconnect As Boolean = True
success = rest.Connect("example.com", 443, bTls, bAutoReconnect)
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


'  Configure Google service-account authentication.  Load the service account JSON key and set the
'  required OAuth scope(s).
Dim gAuth As ChilkatAuthGoogle
gAuth.Initialize("gAuth")

Dim sbJsonKey As ChilkatStringBuilder
sbJsonKey.Initialize
Dim bLoaded As Boolean = sbJsonKey.LoadFile("qa_data/service_account.json")
If bLoaded <> True Then
    Log("Failed to load the service account JSON key.")
    Return
End If

Dim jsonKey As String = sbJsonKey.GetAsString
If sbJsonKey.LastMethodSuccess = False Then
    Log(sbJsonKey.LastErrorText)
    Return
End If

gAuth.JsonKey = jsonKey

'  A space-delimited list of the requested permissions.
gAuth.Scope = "https://www.googleapis.com/auth/cloud-platform"

'  Associate the provider so Chilkat supplies a Google bearer token on each request.
success = rest.SetAuthGoogle(gAuth)
If success = False Then
    Log(rest.LastErrorText)
    Return
End If


Dim responseText As String = rest.FullRequestNoBody("GET", "/storage/v1/b?project=my-project")
If rest.LastMethodSuccess = False Then
    Log(rest.LastErrorText)
    Return
End If

Log(responseText)