79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
// Copyright 2015 CoreOS, 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 version
|
|
|
|
import (
|
|
"os"
|
|
"path"
|
|
|
|
"github.com/coreos/etcd/pkg/fileutil"
|
|
"github.com/coreos/etcd/pkg/types"
|
|
)
|
|
|
|
var (
|
|
// MinClusterVersion is the min cluster version this etcd binary is compatible with.
|
|
MinClusterVersion = "2.0.0"
|
|
Version = "2.1.1+git"
|
|
|
|
// Git SHA Value will be set during build
|
|
GitSHA = "Not provided (use ./build instead of go build)"
|
|
)
|
|
|
|
// WalVersion is an enum for versions of etcd logs.
|
|
type DataDirVersion string
|
|
|
|
const (
|
|
DataDirUnknown DataDirVersion = "Unknown WAL"
|
|
DataDir2_0 DataDirVersion = "2.0.0"
|
|
DataDir2_0Proxy DataDirVersion = "2.0 proxy"
|
|
DataDir2_0_1 DataDirVersion = "2.0.1"
|
|
)
|
|
|
|
type Versions struct {
|
|
Server string `json:"etcdserver"`
|
|
Cluster string `json:"etcdcluster"`
|
|
// TODO: raft state machine version
|
|
}
|
|
|
|
func DetectDataDir(dirpath string) (DataDirVersion, error) {
|
|
names, err := fileutil.ReadDir(dirpath)
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
err = nil
|
|
}
|
|
// Error reading the directory
|
|
return DataDirUnknown, err
|
|
}
|
|
nameSet := types.NewUnsafeSet(names...)
|
|
if nameSet.Contains("member") {
|
|
ver, err := DetectDataDir(path.Join(dirpath, "member"))
|
|
if ver == DataDir2_0 {
|
|
return DataDir2_0_1, nil
|
|
}
|
|
return ver, err
|
|
}
|
|
if nameSet.ContainsAll([]string{"snap", "wal"}) {
|
|
// .../wal cannot be empty to exist.
|
|
walnames, err := fileutil.ReadDir(path.Join(dirpath, "wal"))
|
|
if err == nil && len(walnames) > 0 {
|
|
return DataDir2_0, nil
|
|
}
|
|
}
|
|
if nameSet.ContainsAll([]string{"proxy"}) {
|
|
return DataDir2_0Proxy, nil
|
|
}
|
|
return DataDirUnknown, nil
|
|
}
|