// NewServiceAccountFromKey constructs the credentials using the JSON key slice
// from a Google Developers service account.
func NewServiceAccountFromKey(jsonKey []byte, scope ...string) (Credentials, error) {
config, err := google.JWTConfigFromJSON(jsonKey, scope...)
if err != nil {
return nil, err
}
return serviceAccount{config: config}, nil
}
func Context(scopes ...string) context.Context {
key, projID := os.Getenv(envPrivateKey), os.Getenv(envProjID)
if key == "" || projID == "" {
log.Fatal("GCLOUD_TESTS_GOLANG_KEY and GCLOUD_TESTS_GOLANG_PROJECT_ID must be set. See CONTRIBUTING.md for details.")
}
jsonKey, err := ioutil.ReadFile(key)
if err != nil {
log.Fatalf("Cannot read the JSON key file, err: %v", err)
}
conf, err := google.JWTConfigFromJSON(jsonKey, scopes...)
if err != nil {
log.Fatal(err)
}
return cloud.NewContext(projID, conf.Client(oauth2.NoContext))
}
func ExampleJWTConfigFromJSON() {
// Your credentials should be obtained from the Google
// Developer Console (https://console.developers.google.com).
// Navigate to your project, then see the "Credentials" page
// under "APIs & Auth".
// To create a service account client, click "Create new Client ID",
// select "Service Account", and click "Create Client ID". A JSON
// key file will then be downloaded to your computer.
data, err := ioutil.ReadFile("/path/to/your-project-key.json")
if err != nil {
log.Fatal(err)
}
conf, err := google.JWTConfigFromJSON(data, "https://www.googleapis.com/auth/bigquery")
if err != nil {
log.Fatal(err)
}
// Initiate an http.Client. The following GET request will be
// authorized and authenticated on the behalf of
// your service account.
client := conf.Client(oauth2.NoContext)
client.Get("...")
}