forked from cloudfoundry-attic/bosh-ext-cli
/
sdk.go
54 lines (45 loc) · 1.84 KB
/
sdk.go
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/*
* Copyright 2017 Google Inc.
*
* 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 client
import (
"context"
"errors"
"golang.org/x/oauth2/google"
"google.golang.org/api/option"
"net/http"
"cloud.google.com/go/storage"
"github.com/cloudfoundry/bosh-gcscli/config"
)
const uaString = "bosh-gcscli"
func newStorageClients(ctx context.Context, cfg *config.GCSCli) (*storage.Client, *storage.Client, error) {
publicClient, err := storage.NewClient(ctx, option.WithUserAgent(uaString), option.WithHTTPClient(http.DefaultClient))
var authenticatedClient *storage.Client
switch cfg.CredentialsSource {
case config.NoneCredentialsSource:
// no-op
case config.DefaultCredentialsSource:
if tokenSource, err := google.DefaultTokenSource(ctx, storage.ScopeFullControl); err == nil {
authenticatedClient, err = storage.NewClient(ctx, option.WithUserAgent(uaString), option.WithTokenSource(tokenSource))
}
case config.ServiceAccountFileCredentialsSource:
if token, err := google.JWTConfigFromJSON([]byte(cfg.ServiceAccountFile), storage.ScopeFullControl); err == nil {
authenticatedClient, err = storage.NewClient(ctx, option.WithUserAgent(uaString), option.WithTokenSource(token.TokenSource(ctx)))
}
default:
return nil, nil, errors.New("unknown credentials_source in configuration")
}
return authenticatedClient, publicClient, err
}