Add util package for getting version information

util/vers/vers.go

@@ -0,0 +1,43 @@
+// Copyright © 2016 Abcum Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package vers
+
+import (
+	"runtime"
+)
+
+var (
+	ver  = "0.1.0" // Version number
+	rev  string    // Git revision of this build
+	time string    // Build time in UTC (year/month/day hour:min:sec)
+)
+
+// Info holds information about the current build
+type Info struct {
+	Go   string `json:"go"`
+	Ver  string `json:"ver"`
+	Rev  string `json:"rev"`
+	Time string `json:"time"`
+}
+
+// GetInfo returns information about the current build
+func GetInfo() Info {
+	return Info{
+		Go:   runtime.Version(),
+		Ver:  ver,
+		Rev:  rev,
+		Time: time,
+	}
+}