mirror of https://github.com/perkeep/perkeep.git
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
/*
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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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"fmt"
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"camlistore.org/pkg/blob"
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"camlistore.org/pkg/syncutil"
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"camlistore.org/third_party/labix.org/v2/mgo/bson"
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)
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var statGate = syncutil.NewGate(50) // arbitrary
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func (m *mongoStorage) StatBlobs(dest chan<- blob.SizedRef, blobs []blob.Ref) error {
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var wg syncutil.Group
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for _, b := range blobs {
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b := b
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statGate.Start()
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wg.Go(func() error {
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defer statGate.Done()
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var doc blobDoc
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if err := m.c.Find(bson.M{"key": b.String()}).Select(bson.M{"size": 1}).One(&doc); err != nil {
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return fmt.Errorf("error statting %v: %v", b, err)
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}
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dest <- blob.SizedRef{Ref: b, Size: doc.Size}
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return nil
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})
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}
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return wg.Err()
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}
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