minio/xl-v1-metadata.go
Harshavardhana a1a667ae5d xl: Change fileMetadata to xlMetadata. (#1404)
Finalized backend format

```
{
    "version": "1.0.0",
    "stat": {
        "size": 24256,
        "modTime": "2016-04-28T00:11:37.843Z"
    },
    "erasure": {
        "data": 5,
        "parity": 5,
        "blockSize": 4194304
    ],
    "minio": {
        "release": "RELEASE.2016-04-28T00-09-47Z"
    }
}
```
2016-04-28 19:27:02 -07:00

62 lines
1.6 KiB
Go

/*
* 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 (
"encoding/json"
"io"
"time"
)
// A xlMetaV1 represents a metadata header mapping keys to sets of values.
type xlMetaV1 struct {
Version string `json:"version"`
Stat struct {
Size int64 `json:"size"`
ModTime time.Time `json:"modTime"`
Version int64 `json:"version"`
} `json:"stat"`
Erasure struct {
DataBlocks int `json:"data"`
ParityBlocks int `json:"parity"`
BlockSize int64 `json:"blockSize"`
}
Minio struct {
Release string `json:"release"`
} `json:"minio"`
}
// Write writes a metadata in wire format.
func (m xlMetaV1) Write(writer io.Writer) error {
metadataBytes, err := json.Marshal(m)
if err != nil {
return err
}
_, err = writer.Write(metadataBytes)
return err
}
// xlMetaV1Decode - file metadata decode.
func xlMetaV1Decode(reader io.Reader) (metadata xlMetaV1, err error) {
decoder := json.NewDecoder(reader)
// Unmarshalling failed, file possibly corrupted.
if err = decoder.Decode(&metadata); err != nil {
return xlMetaV1{}, err
}
return metadata, nil
}