minio/main.go
Bala FA 440866d26c Move go version check into main() (#3734)
Previously the check was done in init().  This patch moves into main
for unit testable friendly function.
2017-02-11 01:27:27 -08:00

69 lines
2 KiB
Go

/*
* Minio Cloud Storage, (C) 2016,2017 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.
*/
/*
* Below main package has canonical imports for 'go get' and 'go build'
* to work with all other clones of github.com/minio/minio repository. For
* more information refer https://golang.org/doc/go1.4#canonicalimports
*/
package main // import "github.com/minio/minio"
import (
"fmt"
"os"
"runtime"
version "github.com/hashicorp/go-version"
"github.com/minio/mc/pkg/console"
minio "github.com/minio/minio/cmd"
)
const (
// Minio requires at least Go v1.7
minGoVersion = "1.7"
goVersionConstraint = ">= " + minGoVersion
)
// Check if this binary is compiled with at least minimum Go version.
func checkGoVersion(goVersionStr string) error {
constraint, err := version.NewConstraint(goVersionConstraint)
if err != nil {
return fmt.Errorf("'%s': %s", goVersionConstraint, err)
}
goVersion, err := version.NewVersion(goVersionStr)
if err != nil {
return err
}
if !constraint.Check(goVersion) {
return fmt.Errorf("Minio is not compiled by Go %s. Please recompile accordingly.",
goVersionConstraint)
}
return nil
}
func main() {
// When `go get` is used minimum Go version check is not triggered but it would have compiled it successfully.
// However such binary will fail at runtime, hence we also check Go version at runtime.
if err := checkGoVersion(runtime.Version()[2:]); err != nil {
console.Fatalln("Go runtime version check failed.", err)
}
minio.Main(os.Args, os.Exit)
}