minio/cmd/gateway-s3-anonymous.go
Frank Wessels 46897b1100 Name return values to prevent the need (and unnecessary code bloat) (#4576)
This is done to explicitly instantiate objects for every return statement.
2017-06-21 19:53:09 -07:00

133 lines
4.1 KiB
Go

/*
* 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 cmd
import (
"encoding/hex"
"io"
minio "github.com/minio/minio-go"
)
// AnonPutObject creates a new object anonymously with the incoming data,
func (l *s3Objects) AnonPutObject(bucket string, object string, size int64, data io.Reader, metadata map[string]string, sha256sum string) (objInfo ObjectInfo, e error) {
var sha256sumBytes []byte
var err error
if sha256sum != "" {
sha256sumBytes, err = hex.DecodeString(sha256sum)
if err != nil {
return objInfo, s3ToObjectError(traceError(err), bucket, object)
}
}
var md5sumBytes []byte
md5sum := metadata["etag"]
if md5sum != "" {
md5sumBytes, err = hex.DecodeString(md5sum)
if err != nil {
return objInfo, s3ToObjectError(traceError(err), bucket, object)
}
delete(metadata, "etag")
}
oi, err := l.anonClient.PutObject(bucket, object, size, data, md5sumBytes, sha256sumBytes, toMinioClientMetadata(metadata))
if err != nil {
return objInfo, s3ToObjectError(traceError(err), bucket, object)
}
return fromMinioClientObjectInfo(bucket, oi), nil
}
// AnonGetObject - Get object anonymously
func (l *s3Objects) AnonGetObject(bucket string, key string, startOffset int64, length int64, writer io.Writer) error {
r := minio.NewGetReqHeaders()
if err := r.SetRange(startOffset, startOffset+length-1); err != nil {
return s3ToObjectError(traceError(err), bucket, key)
}
object, _, err := l.anonClient.GetObject(bucket, key, r)
if err != nil {
return s3ToObjectError(traceError(err), bucket, key)
}
defer object.Close()
if _, err := io.CopyN(writer, object, length); err != nil {
return s3ToObjectError(traceError(err), bucket, key)
}
return nil
}
// AnonGetObjectInfo - Get object info anonymously
func (l *s3Objects) AnonGetObjectInfo(bucket string, object string) (objInfo ObjectInfo, e error) {
r := minio.NewHeadReqHeaders()
oi, err := l.anonClient.StatObject(bucket, object, r)
if err != nil {
return objInfo, s3ToObjectError(traceError(err), bucket, object)
}
return fromMinioClientObjectInfo(bucket, oi), nil
}
// AnonListObjects - List objects anonymously
func (l *s3Objects) AnonListObjects(bucket string, prefix string, marker string, delimiter string, maxKeys int) (loi ListObjectsInfo, e error) {
result, err := l.anonClient.ListObjects(bucket, prefix, marker, delimiter, maxKeys)
if err != nil {
return loi, s3ToObjectError(traceError(err), bucket)
}
return fromMinioClientListBucketResult(bucket, result), nil
}
// AnonListObjectsV2 - List objects in V2 mode, anonymously
func (l *s3Objects) AnonListObjectsV2(bucket, prefix, continuationToken string, fetchOwner bool, delimiter string, maxKeys int) (loi ListObjectsV2Info, e error) {
result, err := l.anonClient.ListObjectsV2(bucket, prefix, continuationToken, fetchOwner, delimiter, maxKeys)
if err != nil {
return loi, s3ToObjectError(traceError(err), bucket)
}
return fromMinioClientListBucketV2Result(bucket, result), nil
}
// AnonGetBucketInfo - Get bucket metadata anonymously.
func (l *s3Objects) AnonGetBucketInfo(bucket string) (bi BucketInfo, e error) {
if exists, err := l.anonClient.BucketExists(bucket); err != nil {
return bi, s3ToObjectError(traceError(err), bucket)
} else if !exists {
return bi, traceError(BucketNotFound{Bucket: bucket})
}
buckets, err := l.anonClient.ListBuckets()
if err != nil {
return bi, s3ToObjectError(traceError(err), bucket)
}
for _, bi := range buckets {
if bi.Name != bucket {
continue
}
return BucketInfo{
Name: bi.Name,
Created: bi.CreationDate,
}, nil
}
return bi, traceError(BucketNotFound{Bucket: bucket})
}