storer

package
v1.17.0 Latest Latest
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 Go to latest Published: Aug 4, 2023 License: BSD-3-Clause Imports: 56 Imported by: 9

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Index

Constants

View Source 
const SampleSize = 8

Variables

View Source 
var ErrDBQuit = errors.New("db quit")

Functions

This section is empty.

Types

type BinC 

type BinC struct {
	Address swarm.Address
	BinID   uint64
	BatchID []byte
}

BinC is the result returned from the SubscribeBin channel that contains the chunk address and the binID

type CacheStat 

type CacheStat struct {
	Size     int
	Capacity int
}

type CacheStore 

type CacheStore interface {
	// Lookup method provides a storage.Getter wrapped around the underlying
	// ChunkStore which will update cache related indexes if required on successful
	// lookups.
	Lookup() storage.Getter
	// Cache method provides a storage.Putter which will add the chunks to cache.
	// This will add the chunk to underlying store as well as new indexes which
	// will keep track of the chunk in the cache.
	Cache() storage.Putter
}

CacheStore is a logical component of the storer that deals with cache content.

type ChunkStoreStat 

type ChunkStoreStat struct {
	TotalChunks int
	SharedSlots int
}

type DB 

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

DB implements all the component stores described above.

func New 

func New(ctx context.Context, dirPath string, opts *Options) (*DB, error)

New returns a newly constructed DB object which implements all the above component stores.

func (*DB) BatchHint 

func (db *DB) BatchHint(address swarm.Address) ([]byte, error)

BatchHint is the implementation of the UploadStore.BatchHint method.

func (*DB) Cache 

func (db *DB) Cache() storage.Putter

Cache is the implementation of the CacheStore.Cache method.

func (*DB) ChunkStore 

func (db *DB) ChunkStore() storage.ReadOnlyChunkStore

func (*DB) Close 

func (db *DB) Close() error

func (*DB) DebugInfo 

func (db *DB) DebugInfo(ctx context.Context) (Info, error)

func (*DB) DeletePin 

func (db *DB) DeletePin(ctx context.Context, root swarm.Address) (err error)

DeletePin is the implementation of the PinStore.DeletePin method.

func (*DB) DeleteSession 

func (db *DB) DeleteSession(tagID uint64) error

DeleteSession is the implementation of the UploadStore.DeleteSession method.

func (*DB) DirectUpload 

func (db *DB) DirectUpload() PutterSession

DirectUpload is the implementation of the NetStore.DirectUpload method.

func (*DB) Download 

func (db *DB) Download(cache bool) storage.Getter

Download is the implementation of the NetStore.Download method.

func (*DB) EvictBatch 

func (db *DB) EvictBatch(ctx context.Context, batchID []byte) error

EvictBatch evicts all chunks belonging to a batch from the reserve.

func (*DB) Execute 

func (db *DB) Execute(ctx context.Context, do func(internal.Storage) error) error

Execute implements the internal.TxExecutor interface.

func (*DB) HasPin 

func (db *DB) HasPin(root swarm.Address) (has bool, err error)

HasPin is the implementation of the PinStore.HasPin method.

func (*DB) IsWithinStorageRadius 

func (db *DB) IsWithinStorageRadius(addr swarm.Address) bool

func (*DB) IteratePinCollection 

func (db *DB) IteratePinCollection(root swarm.Address, iterateFn func(swarm.Address) (bool, error)) error

func (*DB) ListSessions 

func (db *DB) ListSessions(offset, limit int) ([]SessionInfo, error)

ListSessions is the implementation of the UploadStore.ListSessions method.

func (*DB) Lookup 

func (db *DB) Lookup() storage.Getter

Lookup is the implementation of the CacheStore.Lookup method.

func (*DB) Metrics 

func (db *DB) Metrics() []prometheus.Collector

Metrics returns set of prometheus collectors.

func (*DB) NewCollection 

func (db *DB) NewCollection(ctx context.Context) (PutterSession, error)

NewCollection is the implementation of the PinStore.NewCollection method.

func (*DB) NewSession 

func (db *DB) NewSession() (SessionInfo, error)

NewSession is the implementation of UploadStore.NewSession method.

func (*DB) Pins 

func (db *DB) Pins() (address []swarm.Address, err error)

Pins is the implementation of the PinStore.Pins method.

func (*DB) PusherFeed 

func (db *DB) PusherFeed() <-chan *pusher.Op

PusherFeed is the implementation of the NetStore.PusherFeed method.

func (*DB) Report 

func (db *DB) Report(ctx context.Context, chunk swarm.Chunk, state storage.ChunkState) error

Report implements the storage.PushReporter by wrapping the internal reporter with a transaction.

func (*DB) ReserveGet 

func (db *DB) ReserveGet(ctx context.Context, addr swarm.Address, batchID []byte) (chunk swarm.Chunk, err error)

func (*DB) ReserveHas 

func (db *DB) ReserveHas(addr swarm.Address, batchID []byte) (has bool, err error)

func (*DB) ReserveIterateChunks 

func (db *DB) ReserveIterateChunks(cb func(swarm.Chunk) (bool, error)) error

func (*DB) ReserveLastBinIDs 

func (db *DB) ReserveLastBinIDs() ([]uint64, error)

ReserveLastBinIDs returns all of the highest binIDs from all the bins in the reserve.

func (*DB) ReservePutter 

func (db *DB) ReservePutter() storage.Putter

ReservePutter returns a Putter for inserting chunks into the reserve.

func (*DB) ReserveSample 

func (db *DB) ReserveSample(
	ctx context.Context,
	anchor []byte,
	storageRadius uint8,
	consensusTime uint64,
	minBatchBalance *big.Int,
) (Sample, error)

ReserveSample generates the sample of reserve storage of a node required for the storage incentives agent to participate in the lottery round. In order to generate this sample we need to iterate through all the chunks in the node's reserve and calculate the transformed hashes of all the chunks using the anchor as the salt. In order to generate the transformed hashes, we will use the std hmac keyed-hash implementation by using the anchor as the key. Nodes need to calculate the sample in the most optimal way and there are time restrictions. The lottery round is a time based round, so nodes participating in the round need to perform this calculation within the round limits. In order to optimize this we use a simple pipeline pattern: Iterate chunk addresses -> Get the chunk data and calculate transformed hash -> Assemble the sample

func (*DB) ReserveSize 

func (db *DB) ReserveSize() int

func (*DB) Session 

func (db *DB) Session(tagID uint64) (SessionInfo, error)

Session is the implementation of the UploadStore.Session method.

func (*DB) SetRetrievalService 

func (db *DB) SetRetrievalService(r retrieval.Interface)

func (*DB) StartReserveWorker 

func (db *DB) StartReserveWorker(ctx context.Context, s Syncer, radius func() (uint8, error))

func (*DB) StorageRadius 

func (db *DB) StorageRadius() uint8

func (*DB) SubscribeBin 

func (db *DB) SubscribeBin(ctx context.Context, bin uint8, start uint64) (<-chan *BinC, func(), <-chan error)

SubscribeBin returns a channel that feeds all the chunks in the reserve from a certain bin between a start and end binIDs.

func (*DB) SubscribePush 

func (db *DB) SubscribePush(ctx context.Context) (<-chan swarm.Chunk, func())

func (*DB) Upload 

func (db *DB) Upload(ctx context.Context, pin bool, tagID uint64) (PutterSession, error)

Upload is the implementation of UploadStore.Upload method.

type Debugger 

type Debugger interface {
	DebugInfo(context.Context) (Info, error)
}

Debugger is a helper interface which can be used to debug the storer.

type Info 

type Info struct {
	Upload     UploadStat
	Pinning    PinningStat
	Cache      CacheStat
	Reserve    ReserveStat
	ChunkStore ChunkStoreStat
}

type LocalStore 

type LocalStore interface {
	ChunkStore() storage.ReadOnlyChunkStore
}

LocalStore is a read-only ChunkStore. It can be used to check if chunk is known locally, but it cannot tell what is the context of the chunk (whether it is pinned, uploaded, etc.).

type NetStore 

type NetStore interface {
	// DirectUpload provides a session which can be used to push chunks directly
	// to the network.
	DirectUpload() PutterSession
	// Download provides a getter which can be used to download data. If the data
	// is found locally, its returned immediately, otherwise it is retrieved from
	// the network.
	Download(pin bool) storage.Getter
	// PusherFeed is the feed for direct push chunks. This can be used by the
	// pusher component to push out the chunks.
	PusherFeed() <-chan *pusher.Op
}

NetStore is a logical component of the storer that deals with network. It will push/retrieve chunks from the network.

type Options 

type Options struct {
	// These are options related to levelDB. Currently, the underlying storage used is levelDB.
	LdbStats                  atomic.Pointer[prometheus.HistogramVec]
	LdbOpenFilesLimit         uint64
	LdbBlockCacheCapacity     uint64
	LdbWriteBufferSize        uint64
	LdbDisableSeeksCompaction bool
	CacheCapacity             uint64
	Logger                    log.Logger

	Address        swarm.Address
	WarmupDuration time.Duration
	Batchstore     postage.Storer
	ValidStamp     postage.ValidStampFn
	RadiusSetter   topology.SetStorageRadiuser
	StateStore     storage.StateStorer

	ReserveCapacity       int
	ReserveWakeUpDuration time.Duration
}

Options provides a container to configure different things in the storer.

type PinIterator 

type PinIterator interface {
	IteratePinCollection(root swarm.Address, iterateFn func(swarm.Address) (bool, error)) error
}

PinIterator is a helper interface which can be used to iterate over all the chunks in a pinning collection.

type PinStore 

type PinStore interface {
	// NewCollection can be used to create a new PutterSession which writes a new
	// pinning collection. The address passed in during the Done of the session is
	// used as the root referencce.
	NewCollection(context.Context) (PutterSession, error)
	// DeletePin deletes all the chunks associated with the collection pointed to
	// by the swarm.Address passed in.
	DeletePin(context.Context, swarm.Address) error
	// Pins returns all the root references of pinning collections.
	Pins() ([]swarm.Address, error)
	// HasPin is a helper which checks if a collection exists with the root
	// reference passed in.
	HasPin(swarm.Address) (bool, error)
}

PinStore is a logical component of the storer which deals with pinning functionality.

type PinningStat 

type PinningStat struct {
	TotalCollections int
	TotalChunks      int
}

type PutterSession 

type PutterSession interface {
	storage.Putter
	// Done is used to close the session and optionally assign a swarm.Address to
	// this session.
	Done(swarm.Address) error
	// Cleanup is used to cleanup any state related to this session in case of
	// any error.
	Cleanup() error
}

PutterSession provides a session around the storage.Putter. The session on successful completion commits all the operations or in case of error, rolls back the state.

type RadiusChecker 

type RadiusChecker interface {
	IsWithinStorageRadius(addr swarm.Address) bool
	StorageRadius() uint8
}

RadiusChecker provides the radius related functionality.

type Reserve 

type Reserve interface {
	ReserveStore
	EvictBatch(ctx context.Context, batchID []byte) error
	ReserveSample(context.Context, []byte, uint8, uint64, *big.Int) (Sample, error)
	ReserveSize() int
}

Reserve is a logical component of the storer that deals with reserve content. It will implement all the core functionality required for the protocols.

type ReserveIterator 

type ReserveIterator interface {
	ReserveIterateChunks(cb func(swarm.Chunk) (bool, error)) error
}

ReserveIterator is a helper interface which can be used to iterate over all the chunks in the reserve.

type ReserveStat 

type ReserveStat struct {
	Size     int
	Capacity int
}

type ReserveStore 

type ReserveStore interface {
	ReserveGet(ctx context.Context, addr swarm.Address, batchID []byte) (swarm.Chunk, error)
	ReserveHas(addr swarm.Address, batchID []byte) (bool, error)
	ReservePutter() storage.Putter
	SubscribeBin(ctx context.Context, bin uint8, start uint64) (<-chan *BinC, func(), <-chan error)
	ReserveLastBinIDs() ([]uint64, error)
	RadiusChecker
}

ReserveStore is a logical component of the storer that deals with reserve content. It will implement all the core functionality required for the protocols.

type Sample 

type Sample struct {
	Stats SampleStats
	Items []SampleItem
}

func RandSample 

func RandSample(t *testing.T, anchor []byte) Sample

type SampleItem 

type SampleItem struct {
	TransformedAddress swarm.Address
	ChunkAddress       swarm.Address
	ChunkData          []byte
	Stamp              swarm.Stamp
}

type SampleStats 

type SampleStats struct {
	TotalDuration             time.Duration
	TotalIterated             int64
	IterationDuration         time.Duration
	SampleInserts             int64
	NewIgnored                int64
	InvalidStamp              int64
	BelowBalanceIgnored       int64
	HmacrDuration             time.Duration
	ValidStampDuration        time.Duration
	BatchesBelowValueDuration time.Duration
	RogueChunk                int64
	ChunkLoadDuration         time.Duration
	ChunkLoadFailed           int64
	StampLoadFailed           int64
}

type SessionInfo 

type SessionInfo = upload.TagItem

SessionInfo is a type which exports the storer tag object. This object stores all the relevant information about a particular session.

type Syncer 

type Syncer interface {
	// Number of active historical syncing jobs.
	SyncRate() float64
	Start(context.Context)
}

type UploadStat 

type UploadStat struct {
	TotalUploaded int
	TotalSynced   int
}

type UploadStore 

type UploadStore interface {
	// Upload provides a PutterSession which is tied to the tagID. Optionally if
	// users requests to pin the data, a new pinning collection is created.
	Upload(ctx context.Context, pin bool, tagID uint64) (PutterSession, error)
	// NewSession can be used to obtain a tag ID to use for a new Upload session.
	NewSession() (SessionInfo, error)
	// Session will show the information about the session.
	Session(tagID uint64) (SessionInfo, error)
	// DeleteSession will delete the session info associated with the tag id.
	DeleteSession(tagID uint64) error
	// ListSessions will list all the Sessions currently being tracked.
	ListSessions(offset, limit int) ([]SessionInfo, error)
	// BatchHint will return the batch ID hint for the chunk reference if known.
	BatchHint(swarm.Address) ([]byte, error)
}

UploadStore is a logical component of the storer which deals with the upload of data to swarm.

Source Files

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Directories

Path Synopsis
cache
chunkstamp
chunkstore
events
pinning
reserve
stampindex
upload

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