/
version.go
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/
version.go
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// Copyright The OpenTelemetry 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"
"time"
)
const (
buildDev = "dev"
buildRelease = "release"
)
var (
// Version variable will be replaced at link time after `make` has been run.
Version = "latest"
// GitHash variable will be replaced at link time after `make` has been run.
GitHash = "<NOT PROPERLY GENERATED>"
// BuildType should be one of (dev, release).
BuildType = buildDev
// startTime
startTime time.Time
)
func init() {
startTime = time.Now()
}
// IsDevBuild returns true if this is a development (local) build.
func IsDevBuild() bool {
return BuildType == buildDev
}
// IsReleaseBuild returns true if this is a release build.
func IsReleaseBuild() bool {
return BuildType == buildRelease
}
// InfoVar is a singleton instance of the Info struct.
var InfoVar = Info{
{"Version", Version},
{"GitHash", GitHash},
{"BuildType", BuildType},
{"GoVersion", runtime.Version()},
{"OS", runtime.GOOS},
{"Architecture", runtime.GOARCH},
// Add other valuable build-time information here.
}
// RuntimeVar returns the InfoVar plus runtime information like uptime.
func RuntimeVar() Info {
return append(InfoVar, [2]string{"StartTime", startTime.String()}, [2]string{"Uptime", time.Since(startTime).String()})
}
// Info has properties about the build and runtime.
type Info [][2]string
// String returns a formatted string, with linebreaks, intended to be displayed
// on stdout.
func (i Info) String() string {
buf := new(bytes.Buffer)
maxRow1Alignment := 0
for _, prop := range i {
if cl0 := len(prop[0]); cl0 > maxRow1Alignment {
maxRow1Alignment = cl0
}
}
for _, prop := range i {
// Then finally print them with left alignment
fmt.Fprintf(buf, "%*s %s\n", -maxRow1Alignment, prop[0], prop[1])
}
return buf.String()
}