mirror of https://github.com/minio/minio.git
141 lines
4.1 KiB
Go
141 lines
4.1 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 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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"errors"
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"os"
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"path/filepath"
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"github.com/minio/mc/pkg/console"
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"github.com/minio/minio/pkg/quick"
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)
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func migrateConfig() {
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// Purge all configs with version '1'.
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purgeV1()
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// Migrate version '2' to '3'.
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migrateV2ToV3()
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// Migrate version '3' to '4'.
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migrateV3ToV4()
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}
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// Version '1' is not supported anymore and deprecated, safe to delete.
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func purgeV1() {
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cv1, err := loadConfigV1()
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if err != nil && os.IsNotExist(err) {
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return
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}
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fatalIf(err, "Unable to load config version ‘1’.", nil)
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if cv1.Version == "1" {
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console.Println("Unsupported config version ‘1’ found, removed successfully.")
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/// Purge old fsUsers.json file
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configPath, err := getConfigPath()
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fatalIf(err, "Unable to retrieve config path.", nil)
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configFile := filepath.Join(configPath, "fsUsers.json")
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os.RemoveAll(configFile)
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}
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fatalIf(errors.New(""), "Unexpected version found ‘"+cv1.Version+"’, cannot migrate.", nil)
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}
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// Version '2' to '3' config migration adds new fields and re-orders
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// previous fields. Simplifies config for future additions.
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func migrateV2ToV3() {
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cv2, err := loadConfigV2()
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if err != nil && os.IsNotExist(err) {
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return
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}
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fatalIf(err, "Unable to load config version ‘2’.", nil)
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if cv2.Version != "2" {
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return
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}
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srvConfig := &configV3{}
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srvConfig.Version = "3"
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srvConfig.Addr = ":9000"
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srvConfig.Credential = credential{
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AccessKeyID: cv2.Credentials.AccessKeyID,
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SecretAccessKey: cv2.Credentials.SecretAccessKey,
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}
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srvConfig.Region = cv2.Credentials.Region
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srvConfig.Logger.Console = consoleLogger{
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Enable: true,
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Level: "fatal",
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}
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flogger := fileLogger{}
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flogger.Level = "error"
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if cv2.FileLogger.Filename != "" {
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flogger.Enable = true
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flogger.Filename = cv2.FileLogger.Filename
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}
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srvConfig.Logger.File = flogger
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slogger := syslogLogger{}
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slogger.Level = "debug"
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if cv2.SyslogLogger.Addr != "" {
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slogger.Enable = true
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slogger.Addr = cv2.SyslogLogger.Addr
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}
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srvConfig.Logger.Syslog = slogger
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qc, err := quick.New(srvConfig)
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fatalIf(err, "Unable to initialize config.", nil)
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configFile, err := getConfigFile()
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fatalIf(err, "Unable to get config file.", nil)
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// Migrate the config.
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err = qc.Save(configFile)
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fatalIf(err, "Migrating from version ‘"+cv2.Version+"’ to ‘"+srvConfig.Version+"’ failed.", nil)
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console.Println("Migration from version ‘" + cv2.Version + "’ to ‘" + srvConfig.Version + "’ completed successfully.")
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}
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// Version '3' to '4' migrates config, removes previous fields related
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// to backend types and server address. This change further simplifies
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// the config for future additions.
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func migrateV3ToV4() {
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cv3, err := loadConfigV3()
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if err != nil && os.IsNotExist(err) {
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return
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}
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fatalIf(err, "Unable to load config version ‘3’.", nil)
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if cv3.Version != "3" {
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return
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}
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// Save only the new fields, ignore the rest.
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srvConfig := &serverConfigV4{}
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srvConfig.Version = globalMinioConfigVersion
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srvConfig.Credential = cv3.Credential
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srvConfig.Region = cv3.Region
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srvConfig.Logger.Console = cv3.Logger.Console
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srvConfig.Logger.File = cv3.Logger.File
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srvConfig.Logger.Syslog = cv3.Logger.Syslog
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qc, err := quick.New(srvConfig)
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fatalIf(err, "Unable to initialize the quick config.", nil)
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configFile, err := getConfigFile()
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fatalIf(err, "Unable to get config file.", nil)
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err = qc.Save(configFile)
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fatalIf(err, "Migrating from version ‘"+cv3.Version+"’ to ‘"+srvConfig.Version+"’ failed.", nil)
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console.Println("Migration from version ‘" + cv3.Version + "’ to ‘" + srvConfig.Version + "’ completed successfully.")
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}
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