cmd/uplinkng: expand version information

This includes the information that used to exist in uplink
as well as all of the module versions.

Change-Id: Ie6d6fa12da9c04b50611e5885e05ab0c24a2ec0d

cmd/uplinkng/cmd_version.go

@@ -4,12 +4,16 @@
 package main
 
 import (
+	"fmt"
 	"runtime/debug"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/zeebo/clingy"
 	"github.com/zeebo/errs"
+
+	"storj.io/private/version"
 )
 
 type cmdVersion struct {
@@ -28,6 +32,28 @@ func (c *cmdVersion) Setup(params clingy.Parameters) {
 }
 
 func (c *cmdVersion) Execute(ctx clingy.Context) error {
+	if version.Build.Release {
+		fmt.Fprintln(ctx, "Release build")
+	} else {
+		fmt.Fprintln(ctx, "Development build")
+	}
+
+	{
+		tw := newTabbedWriter(ctx.Stdout())
+		if !version.Build.Version.IsZero() {
+			tw.WriteLine("Version:", version.Build.Version.String())
+		}
+		if !version.Build.Timestamp.IsZero() {
+			tw.WriteLine("Build timestamp:", version.Build.Timestamp.Format(time.RFC822))
+		}
+		if version.Build.CommitHash != "" {
+			tw.WriteLine("Git commit:", version.Build.CommitHash)
+		}
+		tw.Done()
+	}
+
+	fmt.Fprintln(ctx)
+
 	bi, ok := debug.ReadBuildInfo()
 	if !ok {
 		return errs.New("unable to read build info")

cmd/uplinkng/tabbed_writer.go

@@ -31,7 +31,9 @@ func (t *tabbedWriter) Done() {
 
 func (t *tabbedWriter) WriteLine(parts ...interface{}) {
 	if !t.wrote {
-		fmt.Fprintln(t.tw, strings.Join(t.headers, "\t"))
+		if len(t.headers) > 0 {
+			fmt.Fprintln(t.tw, strings.Join(t.headers, "\t"))
+		}
 		t.wrote = true
 	}
 	for i, part := range parts {