dendrite/internal/version.go
Till 99f94fc735
Add revision to version string (#3147)
Since the removal of `build.sh`, we don't include any information about
the revision Dendrite was build from. Since go1.18, the revision a
binary was build from is automatically included, so we can try to get
that instead.

This also adds a `dendrite_up` metric showing the current version
(`dendrite_up{version="0.13.1+c796f20"} 1`)

Closes #2993
2023-07-11 13:56:25 +02:00

70 lines
1.4 KiB
Go

package internal
import (
"fmt"
"runtime/debug"
"strings"
)
// the final version string
var version string
// -ldflags "-X github.com/matrix-org/dendrite/internal.branch=master"
var branch string
// -ldflags "-X github.com/matrix-org/dendrite/internal.build=alpha"
var build string
const (
VersionMajor = 0
VersionMinor = 13
VersionPatch = 1
VersionTag = "" // example: "rc1"
gitRevLen = 7 // 7 matches the displayed characters on github.com
)
func VersionString() string {
return version
}
func init() {
version = fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch)
if VersionTag != "" {
version += "-" + VersionTag
}
parts := []string{}
if build != "" {
parts = append(parts, build)
}
if branch != "" {
parts = append(parts, branch)
}
defer func() {
if len(parts) > 0 {
version += "+" + strings.Join(parts, ".")
}
}()
// Try to get the revision Dendrite was build from.
// If we can't, e.g. Dendrite wasn't built (go run) or no VCS version is present,
// we just use the provided version above.
info, ok := debug.ReadBuildInfo()
if !ok {
return
}
for _, setting := range info.Settings {
if setting.Key == "vcs.revision" {
revLen := len(setting.Value)
if revLen >= gitRevLen {
parts = append(parts, setting.Value[:gitRevLen])
} else {
parts = append(parts, setting.Value[:revLen])
}
break
}
}
}