engine

package
v0.14.2 Latest Latest
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 Go to latest Published: Jan 20, 2021 License: GPL-3.0 Imports: 13 Imported by: 1

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Get 

func Get(storage *StorageEngine, addr *objectSDK.Address) (*object.Object, error)

Get reads object from local storage by provided address.

func GetRange 

func GetRange(storage *StorageEngine, addr *objectSDK.Address, rng *objectSDK.Range) ([]byte, error)

GetRange reads object payload range from local storage by provided address. 

func Head(storage *StorageEngine, addr *objectSDK.Address) (*object.Object, error)

Head reads object header from local storage by provided address.

func HeadRaw 

func HeadRaw(storage *StorageEngine, addr *objectSDK.Address, raw bool) (*object.Object, error)

HeadRaw reads object header from local storage by provided address and raw flag.

func List 

func List(storage *StorageEngine, limit uint64) ([]*object.Address, error)

List returns `limit` available physically storage object addresses in engine. If limit is zero, then returns all available object addresses.

func Put 

func Put(storage *StorageEngine, obj *object.Object) error

Put writes provided object to local storage.

func Select 

func Select(storage *StorageEngine, cid *container.ID, fs object.SearchFilters) ([]*object.Address, error)

Select selects objects from local storage using provided filters.

Types

type DeletePrm 

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

DeletePrm groups the parameters of Delete operation.

func (*DeletePrm) WithAddresses 

func (p *DeletePrm) WithAddresses(addr ...*objectSDK.Address) *DeletePrm

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

Option is required.

type DeleteRes 

type DeleteRes struct{}

DeleteRes groups resulting values of Delete operation.

type ExistsPrm 

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

ExistsPrm groups the parameters of Exists operation.

func (*ExistsPrm) WithAddress 

func (p *ExistsPrm) WithAddress(addr *objectSDK.Address) *ExistsPrm

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

type ExistsRes 

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

ExistsRes groups resulting values of Exists operation.

func (*ExistsRes) Exists 

func (p *ExistsRes) Exists() bool

Exists returns the fact that the object is in the storage engine.

type GetPrm 

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

GetPrm groups the parameters of Get operation.

func (*GetPrm) WithAddress 

func (p *GetPrm) WithAddress(addr *objectSDK.Address) *GetPrm

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

Option is required.

type GetRes 

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

GetRes groups resulting values of Get operation.

func (*GetRes) Object 

func (r *GetRes) Object() *object.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) WithAddress 

func (p *HeadPrm) WithAddress(addr *objectSDK.Address) *HeadPrm

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

Option is required.

func (*HeadPrm) WithRaw 

func (p *HeadPrm) WithRaw(raw bool) *HeadPrm

WithRaw 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 resulting values of Head operation.

func (*HeadRes) Header 

func (r *HeadRes) Header() *object.Object

Header returns the requested object header.

Instance has empty payload.

type Info 

type Info struct {
	Shards []shard.Info
}

Info groups the information about StorageEngine.

type InhumePrm 

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

InhumePrm encapsulates parameters for inhume operation.

func (*InhumePrm) WithTarget 

func (p *InhumePrm) WithTarget(addr, tombstone *objectSDK.Address) *InhumePrm

WithTarget sets object address that should be inhumed and tombstone address as the reason for inhume operation.

type InhumeRes 

type InhumeRes struct{}

InhumeRes encapsulates results of inhume operation.

type Option 

type Option func(*cfg)

Option represents StorageEngine's constructor option.

func WithLogger 

func WithLogger(l *logger.Logger) Option

WithLogger returns option to set StorageEngine's logger.

type PutPrm 

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

PutPrm groups the parameters of Put operation.

func (*PutPrm) WithObject 

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

WithObject is a Put option to set object to save.

Option is required.

type PutRes 

type PutRes struct{}

PutRes groups resulting values of Put operation.

type RngPrm 

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

RngPrm groups the parameters of GetRange operation.

func (*RngPrm) WithAddress 

func (p *RngPrm) WithAddress(addr *objectSDK.Address) *RngPrm

WithAddress is a GetRng option to set the address of the requested object.

Option is required.

func (*RngPrm) WithPayloadRange 

func (p *RngPrm) WithPayloadRange(rng *objectSDK.Range) *RngPrm

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

Missing an option or calling with zero length is equivalent to getting the full payload range.

type RngRes 

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

GetRes groups resulting values of GetRange operation.

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) WithContainerID 

func (p *SelectPrm) WithContainerID(cid *container.ID) *SelectPrm

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

func (*SelectPrm) WithFilters 

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

WithFilters is a Select option to set the object filters.

type SelectRes 

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

SelectRes groups resulting values of Select operation.

func (*SelectRes) AddressList 

func (r *SelectRes) AddressList() []*object.Address

AddressList returns list of addresses of the selected objects.

type StorageEngine 

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

StorageEngine represents NeoFS local storage engine.

func New 

func New(opts ...Option) *StorageEngine

New creates, initializes and returns new StorageEngine instance.

func (*StorageEngine) AddShard 

func (e *StorageEngine) AddShard(opts ...shard.Option) (*shard.ID, error)

AddShard adds a new shard to the storage engine.

Returns any error encountered that did not allow adding a shard. Otherwise returns the ID of the added shard.

func (*StorageEngine) Close 

func (e *StorageEngine) Close() error

Close releases all StorageEngine's components.

func (*StorageEngine) Delete 

func (e *StorageEngine) Delete(prm *DeletePrm) (*DeleteRes, error)

Delete removes objects from the shards.

func (*StorageEngine) DumpInfo 

func (e *StorageEngine) DumpInfo() (i Info)

DumpInfo returns information about the StorageEngine.

func (*StorageEngine) Exists 

func (e *StorageEngine) Exists(prm *ExistsPrm) (*ExistsRes, error)

Exists checks if object is presented in storage engine

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

func (*StorageEngine) Get 

func (e *StorageEngine) Get(prm *GetPrm) (*GetRes, error)

Get reads an object from local storage.

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

Returns ErrNotFound if requested object is missing in local storage.

func (*StorageEngine) GetRange 

func (e *StorageEngine) GetRange(prm *RngPrm) (*RngRes, error)

GetRange reads part of an object from local storage.

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

Returns ErrNotFound if requested object is missing in local storage. Returns ErrAlreadyRemoved if requested object is inhumed. Returns ErrRangeOutOfBounds if requested object range is out of bounds.

func (*StorageEngine) Head 

func (e *StorageEngine) Head(prm *HeadPrm) (*HeadRes, error)

Head reads object header from local storage.

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

Returns object.ErrNotFound if requested object is missing in local storage. Returns object.ErrAlreadyRemoved if requested object was inhumed.

func (*StorageEngine) Inhume 

func (e *StorageEngine) Inhume(prm *InhumePrm) (*InhumeRes, error)

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

func (*StorageEngine) Init 

func (e *StorageEngine) Init() error

Init initializes all StorageEngine's components.

func (*StorageEngine) List 

func (e *StorageEngine) List(limit uint64) (*SelectRes, error)

List returns `limit` available physically storage object addresses in engine. If limit is zero, then returns all available object addresses.

func (*StorageEngine) Open 

func (e *StorageEngine) Open() error

Open opens all StorageEngine's components.

func (*StorageEngine) Put 

func (e *StorageEngine) Put(prm *PutPrm) (*PutRes, error)

Put saves the object to local storage.

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

func (*StorageEngine) Select 

func (e *StorageEngine) Select(prm *SelectPrm) (*SelectRes, error)

Select selects the objects from local storage that match select parameters.

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

func (*StorageEngine) SetShardMode 

func (e *StorageEngine) SetShardMode(id *shard.ID, m shard.Mode) error

SetShardMode sets mode of the shard with provided identifier.

Returns an error if shard mode was not set, or shard was not found in storage engine.

Source Files

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