| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package cmd |
| |
| import ( |
| "context" |
| "fmt" |
| "net/http" |
| "strings" |
| ) |
| |
| import ( |
| "golang.org/x/oauth2" |
| "golang.org/x/oauth2/google" |
| ) |
| |
| func isMCPAddr(addr string) bool { |
| // A bit inexact but should be good enough. |
| return strings.Contains(addr, ".googleapis.com/") || strings.Contains(addr, ".googleapis.com:443/") |
| } |
| |
| func mcpTransport(ctx context.Context, tr http.RoundTripper) (http.RoundTripper, error) { |
| creds, err := google.FindDefaultCredentials(ctx, "https://www.googleapis.com/auth/cloud-platform") |
| if err != nil { |
| return nil, fmt.Errorf("finding default GCP credentials: %w", err) |
| } |
| return &oauth2.Transport{ |
| Base: tr, |
| Source: creds.TokenSource, |
| }, nil |
| } |