Include commit information in CI builds. Fixes #158

.gitlab-ci.yml

@@ -14,8 +14,9 @@ stages:
   - apk add build-base olm-dev@edge_community
   - mkdir -p .cache
   - export GOPATH="$CI_PROJECT_DIR/.cache"
+  - export GO_LDFLAGS="-X main.Tag=$CI_COMMIT_TAG -X main.Commit=$CI_COMMIT_REF_NAME -X 'main.BuildTime=`date '+%b %_d %Y, %H:%M:%S'`'"
   script:
-  - go build -o mautrix-whatsapp
+  - go build -ldflags "$GO_LDFLAGS" -o mautrix-whatsapp
   artifacts:
     paths:
     - mautrix-whatsapp
@@ -43,13 +44,14 @@ build static:
   before_script:
   - mkdir -p .cache
   - export GOPATH="$CI_PROJECT_DIR/.cache"
+  - export GO_LDFLAGS="-X main.Tag=$CI_COMMIT_TAG -X main.Commit=$CI_COMMIT_REF_NAME -X 'main.BuildTime=`date '+%b %_d %Y, %H:%M:%S'`'"
   variables:
     CGO_ENABLED: 0
   script:
-  - GOOS=linux GOARCH=amd64 go build -o mautrix-whatsapp_linux_amd64
-  - GOOS=linux GOARCH=arm64 go build -o mautrix-whatsapp_linux_arm64
-  - GOOS=linux GOARCH=arm go build -o mautrix-whatsapp_linux_arm
-  - GOOS=linux GOARCH=386 go build -o mautrix-whatsapp_linux_386
+  - GOOS=linux GOARCH=amd64 go build -ldflags "$GO_LDFLAGS" -o mautrix-whatsapp_linux_amd64
+  - GOOS=linux GOARCH=arm64 go build -ldflags "$GO_LDFLAGS" -o mautrix-whatsapp_linux_arm64
+  - GOOS=linux GOARCH=arm go build -ldflags "$GO_LDFLAGS" -o mautrix-whatsapp_linux_arm
+  - GOOS=linux GOARCH=386 go build -ldflags "$GO_LDFLAGS" -o mautrix-whatsapp_linux_386
   artifacts:
     paths:
     - mautrix-whatsapp_linux_amd64

build.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+go build -ldflags "-X main.Tag=$(git describe --exact-match --tags 2>/dev/null) -X main.Commit=$(git rev-parse HEAD) -X 'main.BuildTime=`date '+%b %_d %Y, %H:%M:%S'`'" "$@"

commands.go

@@ -105,6 +105,8 @@ func (handler *CommandHandler) CommandMux(ce *CommandEvent) {
 		handler.CommandLogoutMatrix(ce)
 	case "help":
 		handler.CommandHelp(ce)
+	case "version":
+		handler.CommandVersion(ce)
 	case "reconnect":
 		handler.CommandReconnect(ce)
 	case "disconnect":
@@ -174,6 +176,21 @@ func (handler *CommandHandler) CommandDevTest(_ *CommandEvent) {
 
 }
 
+const cmdVersionHelp = `version - View the bridge version`
+
+func (handler *CommandHandler) CommandVersion(ce *CommandEvent) {
+	version := fmt.Sprintf("%s+dev.unknown", Version)
+	if Tag == Version {
+		version = fmt.Sprintf("[%s](%s/releases/%s) (%s)", Version, URL, Tag, BuildTime)
+	} else if len(Commit) > 8 {
+		if !strings.HasSuffix(Version, "+dev") {
+			Version += "+dev"
+		}
+		version = fmt.Sprintf("%s.[%s](%s/commit/%s) (%s)", Version, Commit[:8], URL, Commit, BuildTime)
+	}
+	ce.Reply(fmt.Sprintf("[%s](%s) %s", Name, URL, version))
+}
+
 const cmdSetPowerLevelHelp = `set-pl [user ID] <power level> - Change the power level in a portal room. Only for bridge admins.`
 
 func (handler *CommandHandler) CommandSetPowerLevel(ce *CommandEvent) {

main.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"os"
 	"os/signal"
+	"strings"
 	"sync"
 	"syscall"
 	"time"
@@ -38,11 +39,30 @@ import (
 	"maunium.net/go/mautrix-whatsapp/types"
 )
 
+var (
+	// These are static
+	Name = "mautrix-whatsapp"
+	URL = "https://github.com/tulir/mautrix-whatsapp"
+	// This is changed when making a release
+	Version = "0.1.0+dev"
+	// These are filled at build time with the -X linker flag
+	Tag = "unknown"
+	Commit = "unknown"
+	BuildTime = "unknown"
+)
+
+func init() {
+	if len(Tag) > 0 && Tag[0] == 'v' {
+		Tag = Tag[1:]
+	}
+}
+
 var configPath = flag.MakeFull("c", "config", "The path to your config file.", "config.yaml").String()
 
 //var baseConfigPath = flag.MakeFull("b", "base-config", "The path to the example config file.", "example-config.yaml").String()
 var registrationPath = flag.MakeFull("r", "registration", "The path where to save the appservice registration.", "registration.yaml").String()
 var generateRegistration = flag.MakeFull("g", "generate-registration", "Generate registration and quit.", "false").Bool()
+var version = flag.MakeFull("v", "version", "View bridge version and quit.", "false").Bool()
 var ignoreUnsupportedDatabase = flag.Make().LongKey("ignore-unsupported-database").Usage("Run even if database is too new").Default("false").Bool()
 var migrateFrom = flag.Make().LongKey("migrate-db").Usage("Source database type and URI to migrate from.").Bool()
 var wantHelp, _ = flag.MakeHelpFlag()
@@ -347,6 +367,18 @@ func (bridge *Bridge) Main() {
 	} else if *migrateFrom {
 		bridge.MigrateDatabase()
 		return
+	} else if *version {
+		if Tag == Version {
+			fmt.Printf("%s %s (%s)\n", Name, Tag, BuildTime)
+		} else if len(Commit) > 8 {
+			if !strings.HasSuffix(Version, "+dev") {
+				Version += "+dev"
+			}
+			fmt.Printf("%s %s.%s (%s)\n", Name, Version, Commit[:8], BuildTime)
+		} else {
+			fmt.Printf("%s %s+dev.unknown\n", Name, Version)
+		}
+		return
 	}
 
 	bridge.Init()

user.go

@@ -235,7 +235,7 @@ func (user *User) Connect(evenIfNoSession bool) bool {
 		return false
 	}
 	user.Conn = whatsappExt.ExtendConn(conn)
-	_ = user.Conn.SetClientName("Mautrix-WhatsApp bridge", "mx-wa", "0.1.0")
+	_ = user.Conn.SetClientName("Mautrix-WhatsApp bridge", "mx-wa", Version)
 	user.log.Debugln("WhatsApp connection successful")
 	user.Conn.AddHandler(user)
 	return user.RestoreSession()