1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
package mix
import (
"errors"
"fmt"
"io"
objectid "codeberg.org/lindenii/furgit/object/id"
objectstorer "codeberg.org/lindenii/furgit/object/storer"
objecttype "codeberg.org/lindenii/furgit/object/type"
)
// ReadReaderFull reads a full serialized object stream from one backend that
// has it.
func (mix *Mix) ReadReaderFull(id objectid.ObjectID) (io.ReadCloser, error) {
for i, backend := 0, mix.firstBackend(); backend != nil; i, backend = i+1, mix.nextBackend(backend) {
reader, err := backend.ReadReaderFull(id)
if err == nil {
mix.touchBackend(backend)
return reader, nil
}
if errors.Is(err, objectstorer.ErrObjectNotFound) {
continue
}
return nil, fmt.Errorf("objectstorer: backend %d read reader full: %w", i, err)
}
return nil, objectstorer.ErrObjectNotFound
}
// ReadReaderContent reads an object's type, declared content length, and
// content stream from one backend that has it.
func (mix *Mix) ReadReaderContent(id objectid.ObjectID) (objecttype.Type, int64, io.ReadCloser, error) {
for i, backend := 0, mix.firstBackend(); backend != nil; i, backend = i+1, mix.nextBackend(backend) {
ty, size, reader, err := backend.ReadReaderContent(id)
if err == nil {
mix.touchBackend(backend)
return ty, size, reader, nil
}
if errors.Is(err, objectstorer.ErrObjectNotFound) {
continue
}
return objecttype.TypeInvalid, 0, nil, fmt.Errorf("objectstorer: backend %d read reader content: %w", i, err)
}
return objecttype.TypeInvalid, 0, nil, objectstorer.ErrObjectNotFound
}
|
