Merge pull request #51 from rollkit/tux/cmd-version

cmd: add version command

Makefile

@@ -1,6 +1,6 @@
 DOCKER := $(shell which docker)
 DOCKER_BUF := $(DOCKER) run --rm -v $(CURDIR):/workspace --workdir /workspace bufbuild/buf
-LDFLAGS=-ldflags="-X '$(versioningPath).buildTime=$(shell date)' -X '$(versioningPath).lastCommit=$(shell git rev-parse HEAD)' -X '$(versioningPath).semanticVersion=$(shell git describe --tags --dirty=-dev 2>/dev/null || git rev-parse --abbrev-ref HEAD)'"
+LDFLAGS=-ldflags="-X '$(versioningPath).buildTime=$(shell date)' -X '$(versioningPath).lastCommit=$(shell git rev-parse HEAD)' -X '$(versioningPath).semanticVersion=$(shell git describe --tags --dirty=-dev 2>/dev/null || git rev-parse --abbrev-ref HEAD)' -X '$(versioningPath).nodeVersion=$(shell go list -m all | grep celestia-node | cut -d" " -f2)'"
 
 # Define all_pkgs, unit_pkgs, run, and cover vairables for test so that we can override them in
 # the terminal more easily.
@@ -10,7 +10,7 @@ run := .
 count := 1
 
 build:
-	@echo "--> Building Celestia"
+	@echo "--> Building celestia-da"
 	@go build -o build/ ${LDFLAGS} ./cmd/celestia-da
 .PHONY: build
 

cmd/celestia-da/main.go

@@ -31,7 +31,7 @@ func init() {
 	bridgeCmd := cmdnode.NewBridge(WithSubcommands())
 	lightCmd := cmdnode.NewLight(WithSubcommands())
 	fullCmd := cmdnode.NewFull(WithSubcommands())
-	rootCmd.AddCommand(lightCmd, bridgeCmd, fullCmd)
+	rootCmd.AddCommand(lightCmd, bridgeCmd, fullCmd, versionCmd)
 }
 
 func main() {

cmd/celestia-da/version.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"fmt"
+	"runtime/debug"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+// buildInfo populated in ldflags by Makefile
+type buildInfo struct {
+	BuildTime       string
+	LastCommit      string
+	SemanticVersion string
+	NodeVersion     string
+}
+
+// extractBuildInfo parses the ldflags string and returns buildInfo
+func extractBuildInfo(ldflags string) *buildInfo {
+	var buildInfo buildInfo
+
+	// Split ldflags into individual key-value pairs
+	keyValuePairs := strings.Split(ldflags, "-X ")
+
+	// Iterate over key-value pairs
+	for _, pair := range keyValuePairs {
+		// Skip empty pairs
+		if pair == "" {
+			continue
+		}
+
+		// Remove quotes
+		pair = strings.Trim(strings.TrimSpace(pair), "'")
+
+		// Split pair into key and value
+		parts := strings.Split(pair, "=")
+		if len(parts) != 2 {
+			// Invalid pair, skip
+			continue
+		}
+
+		// Trim leading and trailing spaces from key and value
+		key := parts[0]
+		value := strings.TrimSpace(parts[1])
+
+		// Assign value to corresponding field in BuildInfo
+		switch key {
+		case ".buildTime":
+			buildInfo.BuildTime = value
+		case ".lastCommit":
+			buildInfo.LastCommit = value
+		case ".semanticVersion":
+			buildInfo.SemanticVersion = value
+		case ".nodeVersion":
+			buildInfo.NodeVersion = value
+		}
+	}
+	return &buildInfo
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Show information about the current binary build",
+	Args:  cobra.NoArgs,
+	Run:   printBuildInfo,
+}
+
+func printBuildInfo(_ *cobra.Command, _ []string) {
+	debugInfo, _ := debug.ReadBuildInfo()
+	var ldflags string
+	for _, kv := range debugInfo.Settings {
+		switch kv.Key {
+		case "-ldflags":
+			ldflags = kv.Value
+		}
+	}
+	buildInfo := extractBuildInfo(ldflags)
+	fmt.Printf("Semantic version: %s\n", buildInfo.SemanticVersion)
+	fmt.Printf("Build Time: %s\n", buildInfo.BuildTime)
+	fmt.Printf("Last Commit: %s\n", buildInfo.LastCommit)
+	fmt.Printf("Golang version: %s\n", debugInfo.GoVersion)
+	fmt.Printf("Celestia Node version: %s\n", buildInfo.NodeVersion)
+}