8 // Copyright 2017 Microsoft Corporation
10 // Licensed under the Apache License, Version 2.0 (the "License");
11 // you may not use this file except in compliance with the License.
12 // You may obtain a copy of the License at
14 // http://www.apache.org/licenses/LICENSE-2.0
16 // Unless required by applicable law or agreed to in writing, software
17 // distributed under the License is distributed on an "AS IS" BASIS,
18 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 // See the License for the specific language governing permissions and
20 // limitations under the License.
22 const number = "v1.0.0"
25 ua = fmt.Sprintf("Go/%s (%s-%s) go-autorest/adal/%s",
33 // UserAgent returns a string containing the Go version, system architecture and OS, and the adal version.
34 func UserAgent() string {
38 // AddToUserAgent adds an extension to the current user agent
39 func AddToUserAgent(extension string) error {
41 ua = fmt.Sprintf("%s %s", ua, extension)
44 return fmt.Errorf("Extension was empty, User Agent remained as '%s'", ua)