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minio/pkg/storage/donut/interfaces.go

52 lines
1.3 KiB

package donut
import (
"io"
)
// Collection of Donut specification interfaces
// Donut interface
type Donut interface {
CreateBucket(bucket string) error
GetObjectReader(bucket, object string) (io.ReadCloser, error)
GetObjectWriter(bucket, object string) (ObjectWriter, error)
GetObjectMetadata(bucket, object string) (map[string]string, error)
ListBuckets() ([]string, error)
ListObjects(bucket string) ([]string, error)
}
// Bucket interface
type Bucket interface {
GetNodes() ([]string, error)
AddNode(nodeID, bucketID string) error
}
// Node interface
type Node interface {
CreateBucket(bucket string) error
GetBuckets() ([]string, error)
GetDonutMetadata(bucket, object string) (map[string]string, error)
GetMetadata(bucket, object string) (map[string]string, error)
GetReader(bucket, object string) (io.ReadCloser, error)
GetWriter(bucket, object string) (Writer, error)
ListObjects(bucket string) ([]string, error)
}
// ObjectWriter interface
type ObjectWriter interface {
Close() error
CloseWithError(error) error
GetMetadata() (map[string]string, error)
SetMetadata(map[string]string) error
Write([]byte) (int, error)
}
// Writer interface
type Writer interface {
ObjectWriter
GetDonutMetadata() (map[string]string, error)
SetDonutMetadata(map[string]string) error
}