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Copy pathconfig-common.go
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81 lines (67 loc) · 2.4 KB
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/*
* MinIO Cloud Storage, (C) 2018 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 cmd
import (
"bytes"
"context"
"errors"
"github.com/minio/minio/pkg/hash"
)
var errConfigNotFound = errors.New("config file not found")
func readConfig(ctx context.Context, objAPI ObjectLayer, configFile string) ([]byte, error) {
var buffer bytes.Buffer
// Read entire content by setting size to -1
if err := objAPI.GetObject(ctx, minioMetaBucket, configFile, 0, -1, &buffer, "", ObjectOptions{}); err != nil {
// Treat object not found as config not found.
if isErrObjectNotFound(err) {
return nil, errConfigNotFound
}
return nil, err
}
// Return config not found on empty content.
if buffer.Len() == 0 {
return nil, errConfigNotFound
}
return buffer.Bytes(), nil
}
type objectDeleter interface {
DeleteObject(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error)
}
func deleteConfig(ctx context.Context, objAPI objectDeleter, configFile string) error {
_, err := objAPI.DeleteObject(ctx, minioMetaBucket, configFile, ObjectOptions{})
if err != nil && isErrObjectNotFound(err) {
return errConfigNotFound
}
return err
}
func saveConfig(ctx context.Context, objAPI ObjectLayer, configFile string, data []byte) error {
hashReader, err := hash.NewReader(bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)), globalCLIContext.StrictS3Compat)
if err != nil {
return err
}
_, err = objAPI.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader, nil, nil), ObjectOptions{})
return err
}
func checkConfig(ctx context.Context, objAPI ObjectLayer, configFile string) error {
if _, err := objAPI.GetObjectInfo(ctx, minioMetaBucket, configFile, ObjectOptions{}); err != nil {
// Treat object not found as config not found.
if isErrObjectNotFound(err) {
return errConfigNotFound
}
return err
}
return nil
}