Move to vendor

Signed-off-by: Olivier Gambier <olivier@docker.com>

vendor/google.golang.org/cloud/option.go

@@ -0,0 +1,100 @@
+// Copyright 2015 Google Inc. All Rights Reserved.
+//
+// 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 cloud
+
+import (
+	"net/http"
+
+	"golang.org/x/oauth2"
+	"google.golang.org/cloud/internal/opts"
+	"google.golang.org/grpc"
+)
+
+// ClientOption is used when construct clients for each cloud service.
+type ClientOption interface {
+	// Resolve configures the given DialOpts for this option.
+	Resolve(*opts.DialOpt)
+}
+
+// WithTokenSource returns a ClientOption that specifies an OAuth2 token
+// source to be used as the basis for authentication.
+func WithTokenSource(s oauth2.TokenSource) ClientOption {
+	return withTokenSource{s}
+}
+
+type withTokenSource struct{ ts oauth2.TokenSource }
+
+func (w withTokenSource) Resolve(o *opts.DialOpt) {
+	o.TokenSource = w.ts
+}
+
+// WithEndpoint returns a ClientOption that overrides the default endpoint
+// to be used for a service.
+func WithEndpoint(url string) ClientOption {
+	return withEndpoint(url)
+}
+
+type withEndpoint string
+
+func (w withEndpoint) Resolve(o *opts.DialOpt) {
+	o.Endpoint = string(w)
+}
+
+// WithScopes returns a ClientOption that overrides the default OAuth2 scopes
+// to be used for a service.
+func WithScopes(scope ...string) ClientOption {
+	return withScopes(scope)
+}
+
+type withScopes []string
+
+func (w withScopes) Resolve(o *opts.DialOpt) {
+	o.Scopes = []string(w)
+}
+
+// WithUserAgent returns a ClientOption that sets the User-Agent.
+func WithUserAgent(ua string) ClientOption {
+	return withUA(ua)
+}
+
+type withUA string
+
+func (w withUA) Resolve(o *opts.DialOpt) { o.UserAgent = string(w) }
+
+// WithBaseHTTP returns a ClientOption that specifies the HTTP client to
+// use as the basis of communications. This option may only be used with
+// services that support HTTP as their communication transport.
+func WithBaseHTTP(client *http.Client) ClientOption {
+	return withBaseHTTP{client}
+}
+
+type withBaseHTTP struct{ client *http.Client }
+
+func (w withBaseHTTP) Resolve(o *opts.DialOpt) {
+	o.HTTPClient = w.client
+}
+
+// WithBaseGRPC returns a ClientOption that specifies the GRPC client
+// connection to use as the basis of communications. This option many only be
+// used with services that support HRPC as their communication transport.
+func WithBaseGRPC(client *grpc.ClientConn) ClientOption {
+	return withBaseGRPC{client}
+}
+
+type withBaseGRPC struct{ client *grpc.ClientConn }
+
+func (w withBaseGRPC) Resolve(o *opts.DialOpt) {
+	o.GRPCClient = w.client
+}