store

Documentation

Index

• func Init[H header.Header](ctx context.Context, store header.Store[H], ex header.Exchange[H], ...) error
• func NewTestStore(ctx context.Context, t *testing.T, head *test.DummyHeader) header.Store[*test.DummyHeader]
• type Option
  • func WithIndexCacheSize(size int) Option
  • func WithStoreCacheSize(size int) Option
  • func WithWriteBatchSize(size int) Option
• type Parameters
  • func DefaultParameters() Parameters
  • func (p *Parameters) Validate() error
• type Store
  • func NewStore[H header.Header](ds datastore.Batching, opts ...Option) (*Store[H], error)
  • func NewStoreWithHead[H header.Header](ctx context.Context, ds datastore.Batching, head H, opts ...Option) (*Store[H], error)
  • func (s *Store[H]) Append(ctx context.Context, headers ...H) (int, error)
  • func (s *Store[H]) Get(ctx context.Context, hash header.Hash) (H, error)
  • func (s *Store[H]) GetByHeight(ctx context.Context, height uint64) (H, error)
  • func (s *Store[H]) GetRangeByHeight(ctx context.Context, from, to uint64) ([]H, error)
  • func (s *Store[H]) GetVerifiedRange(ctx context.Context, from H, to uint64) ([]H, error)
  • func (s *Store[H]) Has(ctx context.Context, hash header.Hash) (bool, error)
  • func (s *Store[H]) Head(ctx context.Context) (H, error)
  • func (s *Store[H]) Height() uint64
  • func (s *Store[H]) Init(ctx context.Context, initial H) error
  • func (s *Store[H]) Start(context.Context) error
  • func (s *Store[H]) Stop(ctx context.Context) error

Functions

func Init

func Init[H header.Header](ctx context.Context, store header.Store[H], ex header.Exchange[H], hash header.Hash) error

Init ensures a Store is initialized. If it is not already initialized, it initializes the Store by requesting the header with the given hash.

func NewTestStore

func NewTestStore(ctx context.Context, t *testing.T, head *test.DummyHeader) header.Store[*test.DummyHeader]

NewTestStore creates initialized and started in memory header Store which is useful for testing.

Types

type Option

type Option func(*Parameters)

Option is the functional option that is applied to the store instance to configure store parameters.

func WithIndexCacheSize

func WithIndexCacheSize(size int) Option

WithIndexCacheSize is a functional option that configures the `IndexCacheSize` parameter.

func WithStoreCacheSize

func WithStoreCacheSize(size int) Option

WithStoreCacheSize is a functional option that configures the `StoreCacheSize` parameter.

func WithWriteBatchSize

func WithWriteBatchSize(size int) Option

WithWriteBatchSize is a functional option that configures the `WriteBatchSize` parameter.

type Parameters

type Parameters struct {
	// StoreCacheSize defines the maximum amount of entries in the Header Store cache.
	StoreCacheSize int

	// IndexCacheSize defines the maximum amount of entries in the Height to Hash index cache.
	IndexCacheSize int

	// WriteBatchSize defines the size of the batched header write.
	// Headers are written in batches not to thrash the underlying Datastore with writes.
	WriteBatchSize int
}

Parameters is the set of parameters that must be configured for the store.

func DefaultParameters

func DefaultParameters() Parameters

DefaultParameters returns the default params to configure the store.

func (*Parameters) Validate

func (p *Parameters) Validate() error

type Store

type Store[H header.Header] struct {
	Params Parameters
	// contains filtered or unexported fields
}

Store implements the Store interface for Headers over Datastore.

func NewStore

func NewStore[H header.Header](ds datastore.Batching, opts ...Option) (*Store[H], error)

NewStore constructs a Store over datastore. The datastore must have a head there otherwise Start will error. For first initialization of Store use NewStoreWithHead.

func NewStoreWithHead

func NewStoreWithHead[H header.Header](
	ctx context.Context,
	ds datastore.Batching,
	head H,
	opts ...Option,
) (*Store[H], error)

NewStoreWithHead initiates a new Store and forcefully sets a given trusted header as head.

func (*Store[H]) Append

func (s *Store[H]) Append(ctx context.Context, headers ...H) (int, error)

func (*Store[H]) Get

func (s *Store[H]) Get(ctx context.Context, hash header.Hash) (H, error)

func (*Store[H]) GetByHeight

func (s *Store[H]) GetByHeight(ctx context.Context, height uint64) (H, error)

func (*Store[H]) GetRangeByHeight

func (s *Store[H]) GetRangeByHeight(ctx context.Context, from, to uint64) ([]H, error)

func (*Store[H]) GetVerifiedRange

func (s *Store[H]) GetVerifiedRange(
	ctx context.Context,
	from H,
	to uint64,
) ([]H, error)

func (*Store[H]) Has

func (s *Store[H]) Has(ctx context.Context, hash header.Hash) (bool, error)

func (*Store[H]) Head

func (s *Store[H]) Head(ctx context.Context) (H, error)

func (*Store[H]) Height

func (s *Store[H]) Height() uint64

func (*Store[H]) Init

func (s *Store[H]) Init(ctx context.Context, initial H) error

func (*Store[H]) Start

func (s *Store[H]) Start(context.Context) error

func (*Store[H]) Stop

func (s *Store[H]) Stop(ctx context.Context) error