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minio/pkg/madmin/config-commands.go

105 lines
2.7 KiB

/*
* MinIO Cloud Storage, (C) 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.
*
*/
package madmin
import (
"bytes"
"encoding/json"
"errors"
"io"
"net/http"
"github.com/minio/minio/pkg/quick"
)
// GetConfig - returns the config.json of a minio setup, incoming data is encrypted.
func (adm *AdminClient) GetConfig() ([]byte, error) {
// Execute GET on /minio/admin/v1/config to get config of a setup.
resp, err := adm.executeMethod("GET",
requestData{relPath: "/v1/config"})
defer closeResponse(resp)
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
return nil, httpRespToErrorResponse(resp)
}
defer closeResponse(resp)
return DecryptData(adm.secretAccessKey, resp.Body)
}
// SetConfig - set config supplied as config.json for the setup.
func (adm *AdminClient) SetConfig(config io.Reader) (err error) {
const maxConfigJSONSize = 256 * 1024 // 256KiB
// Read configuration bytes
configBuf := make([]byte, maxConfigJSONSize+1)
n, err := io.ReadFull(config, configBuf)
if err == nil {
return bytes.ErrTooLarge
}
if err != io.ErrUnexpectedEOF {
return err
}
configBytes := configBuf[:n]
type configVersion struct {
Version string `json:"version,omitempty"`
}
var cfg configVersion
// Check if read data is in json format
if err = json.Unmarshal(configBytes, &cfg); err != nil {
return errors.New("Invalid JSON format: " + err.Error())
}
// Check if the provided json file has "version" key set
if cfg.Version == "" {
return errors.New("Missing or unset \"version\" key in json file")
}
// Validate there are no duplicate keys in the JSON
if err = quick.CheckDuplicateKeys(string(configBytes)); err != nil {
return errors.New("Duplicate key in json file: " + err.Error())
}
econfigBytes, err := EncryptData(adm.secretAccessKey, configBytes)
if err != nil {
return err
}
reqData := requestData{
relPath: "/v1/config",
content: econfigBytes,
}
// Execute PUT on /minio/admin/v1/config to set config.
resp, err := adm.executeMethod("PUT", reqData)
defer closeResponse(resp)
if err != nil {
return err
}
if resp.StatusCode != http.StatusOK {
return httpRespToErrorResponse(resp)
}
return nil
}