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// Copyright (c) 2018-2022, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package useragent
import (
"fmt"
"runtime"
"strings"
"golang.org/x/text/cases"
"golang.org/x/text/language"
)
var value string
// Value contains the Singularity user agent.
//
// For example, "Singularity/3.0.0 (linux amd64) Go/1.10.3".
func Value() string {
if value == "" {
panic("useragent.InitValue() must be called before calling useragent.Value()")
}
return value
}
// InitValue sets value that will be returned when
// user queries singularity version.
func InitValue(name, version string) {
value = fmt.Sprintf("%v (%v %v) %v",
singularityVersion(name, version),
cases.Title(language.English).String(runtime.GOOS),
runtime.GOARCH,
goVersion())
}
func singularityVersion(name, version string) string {
product := cases.Title(language.English).String(name)
ver := strings.Split(version, "-")[0]
return fmt.Sprintf("%v/%v", product, ver)
}
func goVersion() string {
version := strings.TrimPrefix(runtime.Version(), "go")
return fmt.Sprintf("Go/%v", version)
}
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