1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
|
// Copyright 2016 The Prometheus Authors
// 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 version
import (
"bytes"
"fmt"
"runtime"
"runtime/debug"
"strings"
"text/template"
)
// Build information. Populated at build-time.
var (
Version string
Revision string
Branch string
BuildUser string
BuildDate string
GoVersion = runtime.Version()
GoOS = runtime.GOOS
GoArch = runtime.GOARCH
computedRevision string
computedTags string
)
// versionInfoTmpl contains the template used by Info.
var versionInfoTmpl = `
{{.program}}, version {{.version}} (branch: {{.branch}}, revision: {{.revision}})
build user: {{.buildUser}}
build date: {{.buildDate}}
go version: {{.goVersion}}
platform: {{.platform}}
tags: {{.tags}}
`
// Print returns version information.
func Print(program string) string {
m := map[string]string{
"program": program,
"version": Version,
"revision": GetRevision(),
"branch": Branch,
"buildUser": BuildUser,
"buildDate": BuildDate,
"goVersion": GoVersion,
"platform": GoOS + "/" + GoArch,
"tags": GetTags(),
}
t := template.Must(template.New("version").Parse(versionInfoTmpl))
var buf bytes.Buffer
if err := t.ExecuteTemplate(&buf, "version", m); err != nil {
panic(err)
}
return strings.TrimSpace(buf.String())
}
// Info returns version, branch and revision information.
func Info() string {
return fmt.Sprintf("(version=%s, branch=%s, revision=%s)", Version, Branch, GetRevision())
}
// BuildContext returns goVersion, platform, buildUser and buildDate information.
func BuildContext() string {
return fmt.Sprintf("(go=%s, platform=%s, user=%s, date=%s, tags=%s)", GoVersion, GoOS+"/"+GoArch, BuildUser, BuildDate, GetTags())
}
func GetRevision() string {
if Revision != "" {
return Revision
}
return computedRevision
}
func GetTags() string {
return computedTags
}
func PrometheusUserAgent() string {
return ComponentUserAgent("Prometheus")
}
func ComponentUserAgent(component string) string {
return component + "/" + Version
}
func init() {
computedRevision, computedTags = computeRevision()
}
func computeRevision() (string, string) {
var (
rev = "unknown"
tags = "unknown"
modified bool
)
buildInfo, ok := debug.ReadBuildInfo()
if !ok {
return rev, tags
}
for _, v := range buildInfo.Settings {
if v.Key == "vcs.revision" {
rev = v.Value
}
if v.Key == "vcs.modified" {
if v.Value == "true" {
modified = true
}
}
if v.Key == "-tags" {
tags = v.Value
}
}
if modified {
return rev + "-modified", tags
}
return rev, tags
}
|