1	/*
     2	Copyright 2014 The Perkeep Authors
     3	
     4	Licensed under the Apache License, Version 2.0 (the "License");
     5	you may not use this file except in compliance with the License.
     6	You may obtain a copy of the License at
     7	
     8	     http://www.apache.org/licenses/LICENSE-2.0
     9	
    10	Unless required by applicable law or agreed to in writing, software
    11	distributed under the License is distributed on an "AS IS" BASIS,
    12	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13	See the License for the specific language governing permissions and
    14	limitations under the License.
    15	*/
    16	
    17	package azure
    18	
    19	import (
    20		"bytes"
    21		"context"
    22		"crypto/md5"
    23		"io"
    24	
    25		"perkeep.org/pkg/blob"
    26		"perkeep.org/pkg/blobserver"
    27	)
    28	
    29	func (sto *azureStorage) ReceiveBlob(ctx context.Context, b blob.Ref, source io.Reader) (sr blob.SizedRef, err error) {
    30		var buf bytes.Buffer
    31		md5h := md5.New()
    32	
    33		size, err := io.Copy(io.MultiWriter(&buf, md5h), source)
    34		if err != nil {
    35			return sr, err
    36		}
    37	
    38		err = sto.azureClient.PutObject(ctx, b.String(), sto.container, md5h, size, &buf)
    39		if err != nil {
    40			return sr, err
    41		}
    42		if sto.cache != nil {
    43			// NoHash because it's already verified if we read it
    44			// without errors on the io.Copy above.
    45			blobserver.ReceiveNoHash(ctx, sto.cache, b, bytes.NewReader(buf.Bytes()))
    46		}
    47		return blob.SizedRef{Ref: b, Size: uint32(size)}, nil
    48	}