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95 lines
2.5 KiB
95 lines
2.5 KiB
/*
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* Minio Cloud Storage, (C) 2015 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"fmt"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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)
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var minGolangRuntimeVersion = "1.5.1"
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// following code handles the current Golang release styles, we might have to update them in future
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// if golang community divulges from the below formatting style.
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const (
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betaRegexp = "beta[0-9]"
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rcRegexp = "rc[0-9]"
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)
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func getNormalizedGolangVersion() string {
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version := strings.TrimPrefix(runtime.Version(), "go")
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br := regexp.MustCompile(betaRegexp)
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rr := regexp.MustCompile(rcRegexp)
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betaStr := br.FindString(version)
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version = strings.TrimRight(version, betaStr)
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rcStr := rr.FindString(version)
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version = strings.TrimRight(version, rcStr)
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return version
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}
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type golangVersion struct {
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major, minor, patch string
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}
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func newVersion(v string) golangVersion {
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ver := golangVersion{}
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verSlice := strings.Split(v, ".")
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if len(verSlice) < 2 {
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Fatalln("Version string missing major and minor versions, cannot proceed exiting.")
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}
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if len(verSlice) > 3 {
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Fatalf("Unknown Version style format, newVersion only supports ‘major.minor.patch’ not ‘%s’.\n", v)
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}
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ver.major = verSlice[0]
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ver.minor = verSlice[1]
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if len(verSlice) == 3 {
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ver.patch = verSlice[2]
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} else {
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ver.patch = "0"
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}
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return ver
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}
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func (v1 golangVersion) String() string {
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return fmt.Sprintf("%s%s%s", v1.major, v1.minor, v1.patch)
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}
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func (v1 golangVersion) Version() int {
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ver, e := strconv.Atoi(v1.String())
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if e != nil {
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Fatalln("Unable to parse version string.")
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}
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return ver
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}
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func (v1 golangVersion) LessThan(v2 golangVersion) bool {
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if v1.Version() < v2.Version() {
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return true
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}
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return false
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}
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func checkGolangRuntimeVersion() {
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v1 := newVersion(getNormalizedGolangVersion())
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v2 := newVersion(minGolangRuntimeVersion)
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if v1.LessThan(v2) {
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Fatalln("Old Golang runtime version ‘" + v1.String() + "’ detected., ‘minio’ requires minimum go1.5.1 or later.")
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}
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}
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