b87fae0049
This change moves away from a unified constructor for plaintext and encrypted usage. NewPutObjReader is simplified for the plain-text reader use. For encrypted reader use, WithEncryption should be called on an initialized PutObjReader. Plaintext: func NewPutObjReader(rawReader *hash.Reader) *PutObjReader The hash.Reader is used to provide payload size and md5sum to the downstream consumers. This is different from the previous version in that there is no need to pass nil values for unused parameters. Encrypted: func WithEncryption(encReader *hash.Reader, key *crypto.ObjectKey) (*PutObjReader, error) This method sets up encrypted reader along with the key to seal the md5sum produced by the plain-text reader (already setup when NewPutObjReader was called). Usage: ``` pReader := NewPutObjReader(rawReader) // ... other object handler code goes here // Prepare the encrypted hashed reader pReader, err = pReader.WithEncryption(encReader, objEncKey) ```
87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2018 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 cmd
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import (
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"bytes"
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"context"
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"errors"
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"io/ioutil"
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"net/http"
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"github.com/minio/minio/pkg/hash"
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)
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var errConfigNotFound = errors.New("config file not found")
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func readConfig(ctx context.Context, objAPI ObjectLayer, configFile string) ([]byte, error) {
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// Read entire content by setting size to -1
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r, err := objAPI.GetObjectNInfo(ctx, minioMetaBucket, configFile, nil, http.Header{}, readLock, ObjectOptions{})
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if err != nil {
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// Treat object not found as config not found.
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if isErrObjectNotFound(err) {
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return nil, errConfigNotFound
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}
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return nil, err
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}
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defer r.Close()
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buf, err := ioutil.ReadAll(r)
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if err != nil {
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return nil, err
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}
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if len(buf) == 0 {
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return nil, errConfigNotFound
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}
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return buf, nil
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}
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type objectDeleter interface {
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DeleteObject(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error)
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}
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func deleteConfig(ctx context.Context, objAPI objectDeleter, configFile string) error {
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_, err := objAPI.DeleteObject(ctx, minioMetaBucket, configFile, ObjectOptions{})
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if err != nil && isErrObjectNotFound(err) {
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return errConfigNotFound
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}
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return err
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}
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func saveConfig(ctx context.Context, objAPI ObjectLayer, configFile string, data []byte) error {
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hashReader, err := hash.NewReader(bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)), globalCLIContext.StrictS3Compat)
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if err != nil {
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return err
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}
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_, err = objAPI.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader), ObjectOptions{})
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return err
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}
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func checkConfig(ctx context.Context, objAPI ObjectLayer, configFile string) error {
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if _, err := objAPI.GetObjectInfo(ctx, minioMetaBucket, configFile, ObjectOptions{}); err != nil {
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// Treat object not found as config not found.
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if isErrObjectNotFound(err) {
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return errConfigNotFound
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}
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return err
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}
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return nil
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}
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