71 lines
2.7 KiB
Go
71 lines
2.7 KiB
Go
package writecache
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/common"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/compression"
|
|
meta "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/metabase"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
|
|
objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
|
|
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
|
|
)
|
|
|
|
// Info groups the information about write-cache.
|
|
type Info struct {
|
|
// Full path to the write-cache.
|
|
Path string
|
|
}
|
|
|
|
// Cache represents write-cache for objects.
|
|
type Cache interface {
|
|
Get(ctx context.Context, address oid.Address) (*objectSDK.Object, error)
|
|
Head(context.Context, oid.Address) (*objectSDK.Object, error)
|
|
// Delete removes object referenced by the given oid.Address from the
|
|
// Cache. Returns any error encountered that prevented the object to be
|
|
// removed.
|
|
//
|
|
// Returns apistatus.ObjectNotFound if object is missing in the Cache.
|
|
// Returns ErrReadOnly if the Cache is currently in the read-only mode.
|
|
Delete(context.Context, oid.Address) error
|
|
Put(context.Context, common.PutPrm) (common.PutRes, error)
|
|
SetMode(mode.Mode) error
|
|
SetLogger(*logger.Logger)
|
|
DumpInfo() Info
|
|
Flush(context.Context, bool, bool) error
|
|
Seal(context.Context, bool) error
|
|
|
|
Init() error
|
|
Open(ctx context.Context, mode mode.Mode) error
|
|
Close() error
|
|
GetMetrics() Metrics
|
|
}
|
|
|
|
// MainStorage is the interface of the underlying storage of Cache implementations.
|
|
type MainStorage interface {
|
|
Compressor() *compression.Config
|
|
Exists(context.Context, common.ExistsPrm) (common.ExistsRes, error)
|
|
Put(context.Context, common.PutPrm) (common.PutRes, error)
|
|
}
|
|
|
|
// Metabase is the interface of the metabase used by Cache implementations.
|
|
type Metabase interface {
|
|
UpdateStorageID(context.Context, meta.UpdateStorageIDPrm) (meta.UpdateStorageIDRes, error)
|
|
}
|
|
|
|
var (
|
|
// ErrReadOnly is returned when Put/Write is performed in a read-only mode.
|
|
ErrReadOnly = logicerr.New("write-cache is in read-only mode")
|
|
// ErrDegraded is returned when writecache is in degraded mode.
|
|
ErrDegraded = logicerr.New("write-cache is in degraded mode")
|
|
// ErrNotInitialized is returned when write-cache is initializing.
|
|
ErrNotInitialized = logicerr.New("write-cache is not initialized yet")
|
|
// ErrBigObject is returned when object is too big to be placed in cache.
|
|
ErrBigObject = errors.New("too big object")
|
|
// ErrOutOfSpace is returned when there is no space left to put a new object.
|
|
ErrOutOfSpace = errors.New("no space left in the write cache")
|
|
)
|