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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
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@ -1,3 +1,2 @@
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bin
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*.wasm
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.git
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*.wasm
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@ -4,7 +4,7 @@
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# base installs required dependencies and runs go mod download to cache dependencies
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#
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FROM --platform=${BUILDPLATFORM} docker.io/golang:1.20-alpine AS base
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RUN apk --update --no-cache add bash build-base curl
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RUN apk --update --no-cache add bash build-base curl git
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#
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# build creates all needed binaries
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@ -26,6 +26,7 @@ import (
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"github.com/matrix-org/dendrite/setup/jetstream"
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"github.com/matrix-org/dendrite/setup/process"
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"github.com/matrix-org/gomatrixserverlib/fclient"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/sirupsen/logrus"
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"github.com/matrix-org/dendrite/appservice"
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@ -187,6 +188,16 @@ func main() {
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}
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}
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upCounter := prometheus.NewCounter(prometheus.CounterOpts{
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Namespace: "dendrite",
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Name: "up",
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ConstLabels: map[string]string{
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"version": internal.VersionString(),
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},
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})
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upCounter.Add(1)
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prometheus.MustRegister(upCounter)
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// Expose the matrix APIs directly rather than putting them under a /api path.
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go func() {
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basepkg.SetupAndServeHTTP(processCtx, cfg, routers, httpAddr, nil, nil)
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@ -2,6 +2,7 @@ package internal
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import (
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"fmt"
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"runtime/debug"
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"strings"
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)
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@ -19,6 +20,8 @@ const (
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VersionMinor = 13
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VersionPatch = 1
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VersionTag = "" // example: "rc1"
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gitRevLen = 7 // 7 matches the displayed characters on github.com
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)
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func VersionString() string {
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@ -37,7 +40,30 @@ func init() {
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if branch != "" {
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parts = append(parts, branch)
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}
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if len(parts) > 0 {
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version += "+" + strings.Join(parts, ".")
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defer func() {
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if len(parts) > 0 {
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version += "+" + strings.Join(parts, ".")
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}
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}()
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// Try to get the revision Dendrite was build from.
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// If we can't, e.g. Dendrite wasn't built (go run) or no VCS version is present,
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// we just use the provided version above.
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info, ok := debug.ReadBuildInfo()
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if !ok {
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return
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}
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for _, setting := range info.Settings {
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if setting.Key == "vcs.revision" {
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revLen := len(setting.Value)
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if revLen >= gitRevLen {
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parts = append(parts, setting.Value[:gitRevLen])
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} else {
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parts = append(parts, setting.Value[:revLen])
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}
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break
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}
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}
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}
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