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74 lines
977 B
Go
74 lines
977 B
Go
package backend
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import (
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"errors"
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"io"
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)
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type Type string
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const (
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Data Type = "data"
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Key = "key"
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Lock = "lock"
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Snapshot = "snapshot"
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Tree = "tree"
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)
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const (
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BackendVersion = 1
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)
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var (
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ErrAlreadyPresent = errors.New("blob is already present in backend")
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)
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type Blob interface {
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io.WriteCloser
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ID() (ID, error)
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}
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type Lister interface {
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List(Type) (IDs, error)
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}
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type Getter interface {
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Get(Type, ID) ([]byte, error)
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GetReader(Type, ID) (io.ReadCloser, error)
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}
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type Creater interface {
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Create(Type, []byte) (ID, error)
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CreateFrom(Type, io.Reader) (ID, error)
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CreateBlob(Type) (Blob, error)
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}
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type Tester interface {
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Test(Type, ID) (bool, error)
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}
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type Remover interface {
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Remove(Type, ID) error
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}
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type Closer interface {
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Close() error
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}
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type Deleter interface {
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Delete() error
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}
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type Locationer interface {
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Location() string
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}
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type Backend interface {
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Lister
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Getter
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Creater
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Tester
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Remover
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Closer
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}
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