From 2eb72b69fd6f00e26b20d939fd9622e21cd5e7b7 Mon Sep 17 00:00:00 2001
From: Calvin Leung Huang <cleung2010@gmail.com>
Date: Fri, 28 Apr 2017 16:22:00 -0400
Subject: [PATCH] Add version metadata

---
 version/version.go | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/version/version.go b/version/version.go
index b7985ae0f5..0f81933357 100644
--- a/version/version.go
+++ b/version/version.go
@@ -15,6 +15,7 @@ var (
 
 	Version           = "unknown"
 	VersionPrerelease = "unknown"
+	VersionMetadata   = ""
 )
 
 // VersionInfo
@@ -22,11 +23,13 @@ type VersionInfo struct {
 	Revision          string
 	Version           string
 	VersionPrerelease string
+	VersionMetadata   string
 }
 
 func GetVersion() *VersionInfo {
 	ver := Version
 	rel := VersionPrerelease
+	md := VersionMetadata
 	if GitDescribe != "" {
 		ver = GitDescribe
 	}
@@ -38,6 +41,7 @@ func GetVersion() *VersionInfo {
 		Revision:          GitCommit,
 		Version:           ver,
 		VersionPrerelease: rel,
+		VersionMetadata:   md,
 	}
 }
 
@@ -52,6 +56,10 @@ func (c *VersionInfo) VersionNumber() string {
 		version = fmt.Sprintf("%s-%s", version, c.VersionPrerelease)
 	}
 
+	if c.VersionMetadata != "" {
+		version = fmt.Sprintf("%s+%s", version, c.VersionMetadata)
+	}
+
 	return version
 }
 
@@ -66,6 +74,11 @@ func (c *VersionInfo) FullVersionNumber(rev bool) string {
 	if c.VersionPrerelease != "" {
 		fmt.Fprintf(&versionString, "-%s", c.VersionPrerelease)
 	}
+
+	if c.VersionMetadata != "" {
+		fmt.Fprintf(&versionString, "+%s", c.VersionMetadata)
+	}
+
 	if rev && c.Revision != "" {
 		fmt.Fprintf(&versionString, " (%s)", c.Revision)
 	}