shard

package
v0.0.0-...-79ba347 Latest Latest
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 Go to latest Published: Mar 1, 2023 License: GPL-3.0 Imports: 25 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var ErrDegradedMode = logicerr.New("shard is in degraded mode")

ErrDegradedMode is returned when operation requiring metabase is executed in degraded mode.

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var ErrEndOfListing = meta.ErrEndOfListing

ErrEndOfListing is returned from object listing with cursor when storage can't return any more objects after provided cursor. Use nil cursor object to start listing again.

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var ErrInvalidMagic = logicerr.New("invalid magic")

ErrInvalidMagic is returned when dump format is invalid.

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var ErrLockObjectRemoval = meta.ErrLockObjectRemoval

ErrLockObjectRemoval is returned when inhume operation is being performed on lock object, and it is not a forced object removal.

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var ErrMustBeReadOnly = logicerr.New("shard must be in read-only mode")
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var ErrPiloramaDisabled = logicerr.New("pilorama is disabled")

ErrPiloramaDisabled is returned when pilorama was disabled in the configuration.

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var ErrReadOnlyMode = logicerr.New("shard is in read-only mode")

ErrReadOnlyMode is returned when it is impossible to apply operation that changes shard's memory due to the "read-only" shard's mode.

Functions

func IsErrNotFound 

func IsErrNotFound(err error) bool

IsErrNotFound checks if error returned by Shard Get/Head/GetRange method corresponds to missing object.

func IsErrObjectExpired 

func IsErrObjectExpired(err error) bool

IsErrObjectExpired checks if an error returned by Shard corresponds to expired object.

func IsErrOutOfRange 

func IsErrOutOfRange(err error) bool

IsErrOutOfRange checks if an error returned by Shard GetRange method corresponds to exceeding the object bounds.

func IsErrRemoved 

func IsErrRemoved(err error) bool

IsErrRemoved checks if error returned by Shard Exists/Get/Head/GetRange method corresponds to removed object.

Types

type ContainerSizePrm 

type ContainerSizePrm struct {
	// contains filtered or unexported fields
}

func (*ContainerSizePrm) SetContainerID 

func (p *ContainerSizePrm) SetContainerID(cnr cid.ID)

type ContainerSizeRes 

type ContainerSizeRes struct {
	// contains filtered or unexported fields
}

func (ContainerSizeRes) Size 

func (r ContainerSizeRes) Size() uint64

type Cursor 

type Cursor = meta.Cursor

Cursor is a type for continuous object listing.

type DeletePrm 

type DeletePrm struct {
	// contains filtered or unexported fields
}

DeletePrm groups the parameters of Delete operation.

func (*DeletePrm) SetAddresses 

func (p *DeletePrm) SetAddresses(addr ...oid.Address)

SetAddresses is a Delete option to set the addresses of the objects to delete.

Option is required.

type DeleteRes 

type DeleteRes struct{}

DeleteRes groups the resulting values of Delete operation.

type DeletedLockCallback 

type DeletedLockCallback func(context.Context, []oid.Address)

DeletedLockCallback is a callback handling list of deleted LOCK objects.

type DumpPrm 

type DumpPrm struct {
	// contains filtered or unexported fields
}

DumpPrm groups the parameters of Dump operation.

func (*DumpPrm) WithIgnoreErrors 

func (p *DumpPrm) WithIgnoreErrors(ignore bool)

WithIgnoreErrors is an Dump option to allow ignore all errors during iteration. This includes invalid blobovniczas as well as corrupted objects.

func (*DumpPrm) WithPath 

func (p *DumpPrm) WithPath(path string)

WithPath is an Dump option to set the destination path.

func (*DumpPrm) WithStream 

func (p *DumpPrm) WithStream(r io.Writer)

WithStream is an Dump option to set the destination stream. It takes priority over `path` option.

type DumpRes 

type DumpRes struct {
	// contains filtered or unexported fields
}

DumpRes groups the result fields of Dump operation.

func (DumpRes) Count 

func (r DumpRes) Count() int

Count return amount of object written.

type Event 

type Event interface {
	// contains filtered or unexported methods
}

Event represents class of external events.

func EventNewEpoch 

func EventNewEpoch(e uint64) Event

EventNewEpoch returns new epoch event.

type ExistsPrm 

type ExistsPrm struct {
	// contains filtered or unexported fields
}

ExistsPrm groups the parameters of Exists operation.

func (*ExistsPrm) SetAddress 

func (p *ExistsPrm) SetAddress(addr oid.Address)

SetAddress is an Exists option to set object checked for existence.

type ExistsRes 

type ExistsRes struct {
	// contains filtered or unexported fields
}

ExistsRes groups the resulting values of Exists operation.

func (ExistsRes) Exists 

func (p ExistsRes) Exists() bool

Exists returns the fact that the object is in the shard.

type ExpiredObjectsCallback 

type ExpiredObjectsCallback func(context.Context, []oid.Address)

ExpiredObjectsCallback is a callback handling list of expired objects.

type ExpiredTombstonesCallback 

type ExpiredTombstonesCallback func(context.Context, []meta.TombstonedObject)

ExpiredTombstonesCallback is a callback handling list of expired tombstones.

type FlushWriteCachePrm 

type FlushWriteCachePrm struct {
	// contains filtered or unexported fields
}

FlushWriteCachePrm represents parameters of a `FlushWriteCache` operation.

func (*FlushWriteCachePrm) SetIgnoreErrors 

func (p *FlushWriteCachePrm) SetIgnoreErrors(ignore bool)

SetIgnoreErrors sets the flag to ignore read-errors during flush.

type GetPrm 

type GetPrm struct {
	// contains filtered or unexported fields
}

GetPrm groups the parameters of Get operation.

func (*GetPrm) SetAddress 

func (p *GetPrm) SetAddress(addr oid.Address)

SetAddress is a Get option to set the address of the requested object.

Option is required.

func (*GetPrm) SetIgnoreMeta 

func (p *GetPrm) SetIgnoreMeta(ignore bool)

SetIgnoreMeta is a Get option try to fetch object from blobstor directly, without accessing metabase.

type GetRes 

type GetRes struct {
	// contains filtered or unexported fields
}

GetRes groups the resulting values of Get operation.

func (GetRes) HasMeta 

func (r GetRes) HasMeta() bool

HasMeta returns true if info about the object was found in the metabase.

func (GetRes) Object 

func (r GetRes) Object() *objectSDK.Object

Object returns the requested object.

type HeadPrm 

type HeadPrm struct {
	// contains filtered or unexported fields
}

HeadPrm groups the parameters of Head operation.

func (*HeadPrm) SetAddress 

func (p *HeadPrm) SetAddress(addr oid.Address)

SetAddress is a Head option to set the address of the requested object.

Option is required.

func (*HeadPrm) SetRaw 

func (p *HeadPrm) SetRaw(raw bool)

SetRaw is a Head option to set raw flag value. If flag is unset, then Head returns header of virtual object, otherwise it returns SplitInfo of virtual object.

type HeadRes 

type HeadRes struct {
	// contains filtered or unexported fields
}

HeadRes groups the resulting values of Head operation.

func (HeadRes) Object 

func (r HeadRes) Object() *objectSDK.Object

Object returns the requested object header.

type ID 

type ID []byte

ID represents Shard identifier.

Each shard should have the unique ID within a single instance of local storage.

func NewIDFromBytes 

func NewIDFromBytes(v []byte) *ID

NewIDFromBytes constructs ID from byte slice.

func (ID) String 

func (id ID) String() string

type Info 

type Info struct {
	// Identifier of the shard.
	ID *ID

	// Shard mode.
	Mode mode.Mode

	// Information about the metabase.
	MetaBaseInfo meta.Info

	// Information about the BLOB storage.
	BlobStorInfo blobstor.Info

	// Information about the Write Cache.
	WriteCacheInfo writecache.Info

	// Weight parameters of the shard.
	WeightValues WeightValues

	// ErrorCount contains amount of errors occurred in shard operations.
	ErrorCount uint32

	// PiloramaInfo contains information about trees stored on this shard.
	PiloramaInfo pilorama.Info
}

Info groups the information about Shard.

type InhumePrm 

type InhumePrm struct {
	// contains filtered or unexported fields
}

InhumePrm encapsulates parameters for inhume operation.

func (*InhumePrm) ForceRemoval 

func (p *InhumePrm) ForceRemoval()

ForceRemoval forces object removing despite any restrictions imposed on deleting that object. Expected to be used only in control service.

func (*InhumePrm) MarkAsGarbage 

func (p *InhumePrm) MarkAsGarbage(addr ...oid.Address)

MarkAsGarbage marks object to be physically removed from shard.

Should not be called along with SetTarget.

func (*InhumePrm) SetTarget 

func (p *InhumePrm) SetTarget(tombstone oid.Address, addrs ...oid.Address)

SetTarget sets a list of objects that should be inhumed and tombstone address as the reason for inhume operation.

tombstone should not be nil, addr should not be empty. Should not be called along with MarkAsGarbage.

type InhumeRes 

type InhumeRes struct{}

InhumeRes encapsulates results of inhume operation.

type ListContainersPrm 

type ListContainersPrm struct{}

type ListContainersRes 

type ListContainersRes struct {
	// contains filtered or unexported fields
}

func (ListContainersRes) Containers 

func (r ListContainersRes) Containers() []cid.ID

type ListWithCursorPrm 

type ListWithCursorPrm struct {
	// contains filtered or unexported fields
}

ListWithCursorPrm contains parameters for ListWithCursor operation.

func (*ListWithCursorPrm) WithCount 

func (p *ListWithCursorPrm) WithCount(count uint32)

WithCount sets maximum amount of addresses that ListWithCursor should return.

func (*ListWithCursorPrm) WithCursor 

func (p *ListWithCursorPrm) WithCursor(cursor *Cursor)

WithCursor sets cursor for ListWithCursor operation. For initial request, ignore this param or use nil value. For consecutive requests, use value from ListWithCursorRes.

type ListWithCursorRes 

type ListWithCursorRes struct {
	// contains filtered or unexported fields
}

ListWithCursorRes contains values returned from ListWithCursor operation.

func (ListWithCursorRes) AddressList 

func (r ListWithCursorRes) AddressList() []objectcore.AddressWithType

AddressList returns addresses selected by ListWithCursor operation.

func (ListWithCursorRes) Cursor 

func (r ListWithCursorRes) Cursor() *Cursor

Cursor returns cursor for consecutive listing requests.

type MetricsWriter 

type MetricsWriter interface {
	// SetObjectCounter must set object counter taking into account object type.
	SetObjectCounter(objectType string, v uint64)
	// AddToObjectCounter must update object counter taking into account object
	// type.
	// Negative parameter must decrease the counter.
	AddToObjectCounter(objectType string, delta int)
	// AddToContainerSize must add a value to the container size.
	// Value can be negative.
	AddToContainerSize(cnr string, value int64)
	// AddToPayloadSize must add a value to the payload size.
	// Value can be negative.
	AddToPayloadSize(value int64)
	// IncObjectCounter must increment shard's object counter taking into account
	// object type.
	IncObjectCounter(objectType string)
	// DecObjectCounter must decrement shard's object counter taking into account
	// object type.
	DecObjectCounter(objectType string)
	// SetShardID must set (update) the shard identifier that will be used in
	// metrics.
	SetShardID(id string)
	// SetReadonly must set shard readonly state.
	SetReadonly(readonly bool)
}

MetricsWriter is an interface that must store shard's metrics.

type Option 

type Option func(*cfg)

Option represents Shard's constructor option.

func WithBlobStorOptions 

func WithBlobStorOptions(opts ...blobstor.Option) Option

WithBlobStorOptions returns option to set internal BlobStor options.

func WithDeletedLockCallback 

func WithDeletedLockCallback(v DeletedLockCallback) Option

WithDeletedLockCallback returns option to specify callback of the deleted LOCK objects handler.

func WithExpiredLocksCallback 

func WithExpiredLocksCallback(cb ExpiredObjectsCallback) Option

WithExpiredLocksCallback returns option to specify callback of the expired LOCK objects handler.

func WithExpiredTombstonesCallback 

func WithExpiredTombstonesCallback(cb ExpiredTombstonesCallback) Option

WithExpiredTombstonesCallback returns option to specify callback of the expired tombstones handler.

func WithGCRemoverSleepInterval 

func WithGCRemoverSleepInterval(dur time.Duration) Option

WithGCRemoverSleepInterval returns option to specify sleep interval between object remover executions.

func WithGCWorkerPoolInitializer 

func WithGCWorkerPoolInitializer(wpInit func(int) util.WorkerPool) Option

WithGCWorkerPoolInitializer returns option to set initializer of worker pool with specified worker number.

func WithID 

func WithID(id *ID) Option

WithID returns option to set the default shard identifier.

func WithLogger 

func WithLogger(l *logger.Logger) Option

WithLogger returns option to set Shard's logger.

func WithMetaBaseOptions 

func WithMetaBaseOptions(opts ...meta.Option) Option

WithMetaBaseOptions returns option to set internal metabase options.

func WithMetricsWriter 

func WithMetricsWriter(v MetricsWriter) Option

WithMetricsWriter returns option to specify storage of the shard's metrics.

func WithMode 

func WithMode(v mode.Mode) Option

WithMode returns option to set shard's mode. Mode must be one of the predefined:

  • mode.ReadWrite;
  • mode.ReadOnly.

func WithPiloramaOptions 

func WithPiloramaOptions(opts ...pilorama.Option) Option

WithPiloramaOptions returns option to set internal write cache options.

func WithRefillMetabase 

func WithRefillMetabase(v bool) Option

WithRefillMetabase returns option to set flag to refill the Metabase on Shard's initialization step.

func WithRemoverBatchSize 

func WithRemoverBatchSize(sz int) Option

WithRemoverBatchSize returns option to set batch size of single removal operation.

func WithReportErrorFunc 

func WithReportErrorFunc(f func(selfID string, message string, err error)) Option

WithReportErrorFunc returns option to specify callback for handling storage-related errors in the background workers.

func WithTombstoneSource 

func WithTombstoneSource(v TombstoneSource) Option

WithTombstoneSource returns option to set TombstoneSource.

func WithWriteCache 

func WithWriteCache(use bool) Option

WithWriteCache returns option to toggle write cache usage.

func WithWriteCacheOptions 

func WithWriteCacheOptions(opts ...writecache.Option) Option

WithWriteCacheOptions returns option to set internal write cache options.

type PutPrm 

type PutPrm struct {
	// contains filtered or unexported fields
}

PutPrm groups the parameters of Put operation.

func (*PutPrm) SetObject 

func (p *PutPrm) SetObject(obj *object.Object)

SetObject is a Put option to set object to save.

type PutRes 

type PutRes struct{}

PutRes groups the resulting values of Put operation.

type RestorePrm 

type RestorePrm struct {
	// contains filtered or unexported fields
}

RestorePrm groups the parameters of Restore operation.

func (*RestorePrm) WithIgnoreErrors 

func (p *RestorePrm) WithIgnoreErrors(ignore bool)

WithIgnoreErrors is a Restore option which allows to ignore errors encountered during restore. Corrupted objects will not be processed.

func (*RestorePrm) WithPath 

func (p *RestorePrm) WithPath(path string)

WithPath is a Restore option to set the destination path.

func (*RestorePrm) WithStream 

func (p *RestorePrm) WithStream(r io.Reader)

WithStream is a Restore option to set the stream to read objects from. It takes priority over `WithPath` option.

type RestoreRes 

type RestoreRes struct {
	// contains filtered or unexported fields
}

RestoreRes groups the result fields of Restore operation.

func (RestoreRes) Count 

func (r RestoreRes) Count() int

Count return amount of object written.

func (RestoreRes) FailCount 

func (r RestoreRes) FailCount() int

FailCount return amount of object skipped.

type RngPrm 

type RngPrm struct {
	// contains filtered or unexported fields
}

RngPrm groups the parameters of GetRange operation.

func (*RngPrm) SetAddress 

func (p *RngPrm) SetAddress(addr oid.Address)

SetAddress is a Rng option to set the address of the requested object.

Option is required.

func (*RngPrm) SetIgnoreMeta 

func (p *RngPrm) SetIgnoreMeta(ignore bool)

SetIgnoreMeta is a Get option try to fetch object from blobstor directly, without accessing metabase.

func (*RngPrm) SetRange 

func (p *RngPrm) SetRange(off uint64, ln uint64)

SetRange is a GetRange option to set range of requested payload data.

type RngRes 

type RngRes struct {
	// contains filtered or unexported fields
}

RngRes groups the resulting values of GetRange operation.

func (RngRes) HasMeta 

func (r RngRes) HasMeta() bool

HasMeta returns true if info about the object was found in the metabase.

func (RngRes) Object 

func (r RngRes) Object() *object.Object

Object returns the requested object part.

Instance payload contains the requested range of the original object.

type SelectPrm 

type SelectPrm struct {
	// contains filtered or unexported fields
}

SelectPrm groups the parameters of Select operation.

func (*SelectPrm) SetContainerID 

func (p *SelectPrm) SetContainerID(cnr cid.ID)

SetContainerID is a Select option to set the container id to search in.

func (*SelectPrm) SetFilters 

func (p *SelectPrm) SetFilters(fs object.SearchFilters)

SetFilters is a Select option to set the object filters.

type SelectRes 

type SelectRes struct {
	// contains filtered or unexported fields
}

SelectRes groups the resulting values of Select operation.

func (SelectRes) AddressList 

func (r SelectRes) AddressList() []oid.Address

AddressList returns list of addresses of the selected objects.

type Shard 

type Shard struct {
	// contains filtered or unexported fields
}

Shard represents single shard of FrostFS Local Storage Engine.

func New 

func New(opts ...Option) *Shard

New creates, initializes and returns new Shard instance.

func (*Shard) Close 

func (s *Shard) Close() error

Close releases all Shard's components.

func (*Shard) ContainerSize 

func (s *Shard) ContainerSize(prm ContainerSizePrm) (ContainerSizeRes, error)

func (*Shard) Delete 

func (s *Shard) Delete(prm DeletePrm) (DeleteRes, error)

Delete removes data from the shard's writeCache, metaBase and blobStor.

func (*Shard) Dump 

func (s *Shard) Dump(prm DumpPrm) (DumpRes, error)

Dump dumps all objects from the shard to a file or stream.

Returns any error encountered.

func (*Shard) DumpInfo 

func (s *Shard) DumpInfo() Info

DumpInfo returns information about the Shard.

func (*Shard) Exists 

func (s *Shard) Exists(prm ExistsPrm) (ExistsRes, error)

Exists checks if object is presented in shard.

Returns any error encountered that does not allow to unambiguously determine the presence of an object.

Returns an error of type apistatus.ObjectAlreadyRemoved if object has been marked as removed. Returns the object.ErrObjectIsExpired if the object is presented but already expired.

func (*Shard) FlushWriteCache 

func (s *Shard) FlushWriteCache(p FlushWriteCachePrm) error

FlushWriteCache flushes all data from the write-cache.

func (*Shard) Get 

func (s *Shard) Get(prm GetPrm) (GetRes, error)

Get reads an object from shard.

Returns any error encountered that did not allow to completely read the object part.

Returns an error of type apistatus.ObjectNotFound if the requested object is missing in shard. Returns an error of type apistatus.ObjectAlreadyRemoved if the requested object has been marked as removed in shard. Returns the object.ErrObjectIsExpired if the object is presented but already expired.

func (*Shard) GetMode 

func (s *Shard) GetMode() mode.Mode

GetMode returns mode of the shard.

func (*Shard) GetRange 

func (s *Shard) GetRange(prm RngPrm) (RngRes, error)

GetRange reads part of an object from shard.

Returns any error encountered that did not allow to completely read the object part.

Returns ErrRangeOutOfBounds if the requested object range is out of bounds. Returns an error of type apistatus.ObjectNotFound if the requested object is missing. Returns an error of type apistatus.ObjectAlreadyRemoved if the requested object has been marked as removed in shard. Returns the object.ErrObjectIsExpired if the object is presented but already expired.

func (*Shard) HandleDeletedLocks 

func (s *Shard) HandleDeletedLocks(lockers []oid.Address)

HandleDeletedLocks unlocks all objects which were locked by lockers.

func (*Shard) HandleExpiredLocks 

func (s *Shard) HandleExpiredLocks(lockers []oid.Address)

HandleExpiredLocks unlocks all objects which were locked by lockers. If successful, marks lockers themselves as garbage.

func (*Shard) HandleExpiredTombstones 

func (s *Shard) HandleExpiredTombstones(tss []meta.TombstonedObject)

HandleExpiredTombstones marks tombstones themselves as garbage and clears up corresponding graveyard records.

Does not modify tss.

func (*Shard) Head 

func (s *Shard) Head(prm HeadPrm) (HeadRes, error)

Head reads header of the object from the shard.

Returns any error encountered.

Returns an error of type apistatus.ObjectNotFound if object is missing in Shard. Returns an error of type apistatus.ObjectAlreadyRemoved if the requested object has been marked as removed in shard. Returns the object.ErrObjectIsExpired if the object is presented but already expired.

func (*Shard) ID 

func (s *Shard) ID() *ID

ID returns Shard identifier.

func (*Shard) Inhume 

func (s *Shard) Inhume(prm InhumePrm) (InhumeRes, error)

Inhume calls metabase. Inhume method to mark object as removed. It won't be removed physically from blobStor and metabase until `Delete` operation.

Allows inhuming non-locked objects only. Returns apistatus.ObjectLocked if at least one object is locked.

Returns ErrReadOnlyMode error if shard is in "read-only" mode.

func (*Shard) Init 

func (s *Shard) Init() error

Init initializes all Shard's components.

func (*Shard) IsLocked 

func (s *Shard) IsLocked(addr oid.Address) (bool, error)

IsLocked checks object locking relation of the provided object. Not found object is considered as not locked. Requires healthy metabase, returns ErrDegradedMode otherwise.

func (*Shard) List 

func (s *Shard) List() (res SelectRes, err error)

List returns all objects physically stored in the Shard.

func (*Shard) ListContainers 

func (s *Shard) ListContainers(_ ListContainersPrm) (ListContainersRes, error)

func (*Shard) ListWithCursor 

func (s *Shard) ListWithCursor(prm ListWithCursorPrm) (ListWithCursorRes, error)

ListWithCursor lists physical objects available in shard starting from cursor. Includes regular, tombstone and storage group objects. Does not include inhumed objects. Use cursor value from response for consecutive requests.

Returns ErrEndOfListing if there are no more objects to return or count parameter set to zero.

func (*Shard) Lock 

func (s *Shard) Lock(idCnr cid.ID, locker oid.ID, locked []oid.ID) error

Lock marks objects as locked with another object. All objects from the specified container.

Allows locking regular objects only (otherwise returns apistatus.LockNonRegularObject).

Locked list should be unique. Panics if it is empty.

func (*Shard) NotificationChannel 

func (s *Shard) NotificationChannel() chan<- Event

NotificationChannel returns channel for shard events.

func (*Shard) Open 

func (s *Shard) Open() error

Open opens all Shard's components.

func (*Shard) Put 

func (s *Shard) Put(prm PutPrm) (PutRes, error)

Put saves the object in shard.

Returns any error encountered that did not allow to completely save the object.

Returns ErrReadOnlyMode error if shard is in "read-only" mode.

func (*Shard) Reload 

func (s *Shard) Reload(opts ...Option) error

Reload reloads configuration portions that are necessary. If a config option is invalid, it logs an error and returns nil. If there was a problem with applying new configuration, an error is returned.

func (*Shard) Restore 

func (s *Shard) Restore(prm RestorePrm) (RestoreRes, error)

Restore restores objects from the dump prepared by Dump.

Returns any error encountered.

func (*Shard) Select 

func (s *Shard) Select(prm SelectPrm) (SelectRes, error)

Select selects the objects from shard that match select parameters.

Returns any error encountered that did not allow to completely select the objects.

func (*Shard) SetMode 

func (s *Shard) SetMode(m mode.Mode) error

SetMode sets mode of the shard.

Returns any error encountered that did not allow setting shard mode.

func (*Shard) ToMoveIt 

func (s *Shard) ToMoveIt(prm ToMoveItPrm) (ToMoveItRes, error)

ToMoveIt calls metabase.ToMoveIt method to mark object as relocatable to another shard.

func (*Shard) TreeAddByPath 

func (s *Shard) TreeAddByPath(d pilorama.CIDDescriptor, treeID string, attr string, path []string, meta []pilorama.KeyValue) ([]pilorama.Move, error)

TreeAddByPath implements the pilorama.Forest interface.

func (*Shard) TreeApply 

func (s *Shard) TreeApply(d pilorama.CIDDescriptor, treeID string, m *pilorama.Move, backgroundSync bool) error

TreeApply implements the pilorama.Forest interface.

func (*Shard) TreeDrop 

func (s *Shard) TreeDrop(cid cidSDK.ID, treeID string) error

TreeDrop implements the pilorama.Forest interface.

func (*Shard) TreeExists 

func (s *Shard) TreeExists(cid cidSDK.ID, treeID string) (bool, error)

TreeExists implements the pilorama.Forest interface.

func (*Shard) TreeGetByPath 

func (s *Shard) TreeGetByPath(cid cidSDK.ID, treeID string, attr string, path []string, latest bool) ([]pilorama.Node, error)

TreeGetByPath implements the pilorama.Forest interface.

func (*Shard) TreeGetChildren 

func (s *Shard) TreeGetChildren(cid cidSDK.ID, treeID string, nodeID pilorama.Node) ([]uint64, error)

TreeGetChildren implements the pilorama.Forest interface.

func (*Shard) TreeGetMeta 

func (s *Shard) TreeGetMeta(cid cidSDK.ID, treeID string, nodeID pilorama.Node) (pilorama.Meta, uint64, error)

TreeGetMeta implements the pilorama.Forest interface.

func (*Shard) TreeGetOpLog 

func (s *Shard) TreeGetOpLog(cid cidSDK.ID, treeID string, height uint64) (pilorama.Move, error)

TreeGetOpLog implements the pilorama.Forest interface.

func (*Shard) TreeList 

func (s *Shard) TreeList(cid cidSDK.ID) ([]string, error)

TreeList implements the pilorama.Forest interface.

func (*Shard) TreeMove 

func (s *Shard) TreeMove(d pilorama.CIDDescriptor, treeID string, m *pilorama.Move) (*pilorama.Move, error)

TreeMove implements the pilorama.Forest interface.

func (*Shard) UpdateID 

func (s *Shard) UpdateID() (err error)

UpdateID reads shard ID saved in the metabase and updates it if it is missing.

func (*Shard) WeightValues 

func (s *Shard) WeightValues() WeightValues

WeightValues returns current weight values of the Shard.

type ToMoveItPrm 

type ToMoveItPrm struct {
	// contains filtered or unexported fields
}

ToMoveItPrm encapsulates parameters for ToMoveIt operation.

func (*ToMoveItPrm) SetAddress 

func (p *ToMoveItPrm) SetAddress(addr oid.Address)

SetAddress sets object address that should be marked to move into another shard.

type ToMoveItRes 

type ToMoveItRes struct{}

ToMoveItRes encapsulates results of ToMoveIt operation.

type TombstoneSource 

type TombstoneSource interface {
	// IsTombstoneAvailable must return boolean value that means
	// provided tombstone's presence in the FrostFS network at the
	// time of the passed epoch.
	IsTombstoneAvailable(ctx context.Context, addr oid.Address, epoch uint64) bool
}

TombstoneSource is an interface that checks tombstone status in the FrostFS network.

type WeightValues 

type WeightValues struct {
	// Amount of free disk space. Measured in kilobytes.
	FreeSpace uint64
}

WeightValues groups values of Shard weight parameters.

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