google api go client initialize

google_api_go_client.go

// https://github.com/google/google-api-go-client

import (
        "golang.org/x/net/context"
        "golang.org/x/oauth2/google"
        "google.golang.org/api/compute/v1"
)

func main() {
        // Use oauth2.NoContext if there isn't a good context to pass in.
        ctx := context.Background()

        client, err := google.DefaultClient(ctx, compute.ComputeScope)
        if err != nil {
                //...
        }
        computeService, err := compute.New(client)
        if err != nil {
                //...
        }
}

// token

ts, err := google.DefaultTokenSource(ctx, scope1, scope2, ...)
if err != nil {
        //...
}
client := oauth2.NewClient(ctx, ts)