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minio/verify-runtime.go

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2.3 KiB

/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* 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 main
import (
"fmt"
"regexp"
"runtime"
"strconv"
"strings"
)
var minGolangRuntimeVersion = "1.5.1"
// following code handles the current Golang release styles, we might have to update them in future
// if golang community divulges from the below formatting style.
const (
betaRegexp = "beta[0-9]"
rcRegexp = "rc[0-9]"
)
func getNormalizedGolangVersion() string {
version := strings.TrimPrefix(runtime.Version(), "go")
br := regexp.MustCompile(betaRegexp)
rr := regexp.MustCompile(rcRegexp)
betaStr := br.FindString(version)
version = strings.TrimRight(version, betaStr)
rcStr := rr.FindString(version)
version = strings.TrimRight(version, rcStr)
return version
}
type version struct {
major, minor, patch string
}
func newVersion(v string) version {
var ver version
verSlice := strings.Split(v, ".")
if len(verSlice) > 2 {
ver = version{
major: verSlice[0],
minor: verSlice[1],
patch: verSlice[2],
}
return ver
}
ver = version{
major: verSlice[0],
minor: verSlice[1],
patch: "0",
}
return ver
}
func (v1 version) String() string {
return fmt.Sprintf("%s%s%s", v1.major, v1.minor, v1.patch)
}
func (v1 version) Version() int {
ver, e := strconv.Atoi(v1.String())
if e != nil {
Fatalln("Unable to parse version string.")
}
return ver
}
func (v1 version) LessThan(v2 version) bool {
if v1.Version() < v2.Version() {
return true
}
return false
}
func checkGolangRuntimeVersion() {
v1 := newVersion(getNormalizedGolangVersion())
v2 := newVersion(minGolangRuntimeVersion)
if v1.LessThan(v2) {
Errorln("Old Golang runtime version ‘" + v1.String() + "’ detected., ‘mc’ requires minimum go1.5 or later.")
}
}
func verifyMinioRuntime() {
// add any other checks here.
checkGolangRuntimeVersion()
}