Configure Google Service Account Authentication for REST

See more REST Examples

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 Long
success = 0

Dim rest As New ChilkatRest
Dim bTls As Long
bTls = 1
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = 0) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

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

Dim sbJsonKey As New ChilkatStringBuilder
Dim bLoaded As Long
bLoaded = sbJsonKey.LoadFile("qa_data/service_account.json")
If (bLoaded <> 1) Then
    Debug.Print "Failed to load the service account JSON key."
    Exit Sub
End If

Dim jsonKey As String
jsonKey = sbJsonKey.GetAsString()
If (sbJsonKey.LastMethodSuccess = 0) Then
    Debug.Print sbJsonKey.LastErrorText
    Exit Sub
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 = 0) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim responseText As String
responseText = rest.FullRequestNoBody("GET","/storage/v1/b?project=my-project")
If (rest.LastMethodSuccess = 0) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Debug.Print responseText