minio/config-migrate.go
Harshavardhana 9472299308 logging: Log only for unhandled errors, remove all the debug logging. (#1652)
This patch brings in the removal of debug logging altogether, instead
we bring in the functionality of being able to trace the errors properly
pointing back to the origination of the problem.

To enable tracing you need to enable "MINIO_TRACE" set to "1" or "true"
environment variable which would print back traces whenever there is an
error which is unhandled or at the handler layer.

By default this tracing is turned off and only user level logging is
provided.
2016-05-16 14:31:28 -07:00

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/*
* Minio Cloud Storage, (C) 2016 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 (
"errors"
"os"
"path/filepath"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/quick"
)
func migrateConfig() {
// Purge all configs with version '1'.
purgeV1()
// Migrate version '2' to '3'.
migrateV2ToV3()
// Migrate version '3' to '4'.
migrateV3ToV4()
}
// Version '1' is not supported anymore and deprecated, safe to delete.
func purgeV1() {
cv1, err := loadConfigV1()
if err != nil && os.IsNotExist(err) {
return
}
fatalIf(err, "Unable to load config version 1.")
if cv1.Version == "1" {
console.Println("Removed unsupported config version 1.")
/// Purge old fsUsers.json file
configPath, err := getConfigPath()
fatalIf(err, "Unable to retrieve config path.")
configFile := filepath.Join(configPath, "fsUsers.json")
os.RemoveAll(configFile)
}
fatalIf(errors.New(""), "Failed to migrate unrecognized config version "+cv1.Version+".")
}
// Version '2' to '3' config migration adds new fields and re-orders
// previous fields. Simplifies config for future additions.
func migrateV2ToV3() {
cv2, err := loadConfigV2()
if err != nil && os.IsNotExist(err) {
return
}
fatalIf(err, "Unable to load config version 2.")
if cv2.Version != "2" {
return
}
srvConfig := &configV3{}
srvConfig.Version = "3"
srvConfig.Addr = ":9000"
srvConfig.Credential = credential{
AccessKeyID: cv2.Credentials.AccessKeyID,
SecretAccessKey: cv2.Credentials.SecretAccessKey,
}
srvConfig.Region = cv2.Credentials.Region
if srvConfig.Region == "" {
// Region needs to be set for AWS Signature V4.
srvConfig.Region = "us-east-1"
}
srvConfig.Logger.Console = consoleLogger{
Enable: true,
Level: "fatal",
}
flogger := fileLogger{}
flogger.Level = "error"
if cv2.FileLogger.Filename != "" {
flogger.Enable = true
flogger.Filename = cv2.FileLogger.Filename
}
srvConfig.Logger.File = flogger
slogger := syslogLogger{}
slogger.Level = "debug"
if cv2.SyslogLogger.Addr != "" {
slogger.Enable = true
slogger.Addr = cv2.SyslogLogger.Addr
}
srvConfig.Logger.Syslog = slogger
qc, err := quick.New(srvConfig)
fatalIf(err, "Unable to initialize config.")
configFile, err := getConfigFile()
fatalIf(err, "Unable to get config file.")
// Migrate the config.
err = qc.Save(configFile)
fatalIf(err, "Failed to migrate config from "+cv2.Version+" to "+srvConfig.Version+" failed.")
console.Println("Migration from version " + cv2.Version + " to " + srvConfig.Version + " completed successfully.")
}
// Version '3' to '4' migrates config, removes previous fields related
// to backend types and server address. This change further simplifies
// the config for future additions.
func migrateV3ToV4() {
cv3, err := loadConfigV3()
if err != nil && os.IsNotExist(err) {
return
}
fatalIf(err, "Unable to load config version 3.")
if cv3.Version != "3" {
return
}
// Save only the new fields, ignore the rest.
srvConfig := &serverConfigV4{}
srvConfig.Version = globalMinioConfigVersion
srvConfig.Credential = cv3.Credential
srvConfig.Region = cv3.Region
if srvConfig.Region == "" {
// Region needs to be set for AWS Signature Version 4.
srvConfig.Region = "us-east-1"
}
srvConfig.Logger.Console = cv3.Logger.Console
srvConfig.Logger.File = cv3.Logger.File
srvConfig.Logger.Syslog = cv3.Logger.Syslog
qc, err := quick.New(srvConfig)
fatalIf(err, "Unable to initialize the quick config.")
configFile, err := getConfigFile()
fatalIf(err, "Unable to get config file.")
err = qc.Save(configFile)
fatalIf(err, "Failed to migrate config from "+cv3.Version+" to "+srvConfig.Version+" failed.")
console.Println("Migration from version " + cv3.Version + " to " + srvConfig.Version + " completed successfully.")
}