mirror of https://github.com/perkeep/perkeep.git
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
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/*
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Copyright 2014 The Camlistore Authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 mongo
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import (
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"camlistore.org/pkg/blob"
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"camlistore.org/third_party/labix.org/v2/mgo/bson"
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)
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func (m *mongoStorage) Fetch(ref blob.Ref) (io.ReadCloser, uint32, error) {
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var b blobDoc
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err := m.c.Find(bson.M{"key": ref.String()}).One(&b)
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if err != nil {
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return nil, 0, err
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}
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if len(b.Blob) != int(b.Size) {
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return nil, 0, fmt.Errorf("blob data size %d doesn't match meta size %d", len(b.Blob), b.Size)
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}
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return ioutil.NopCloser(bytes.NewReader(b.Blob)), b.Size, nil
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}
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