files

Documentation

Index

• Constants
• type Provider
  • func NewProvider(dir string) Provider
  • func (m Provider) GetByHash(hash []byte) (certifiers.Seed, error)
  • func (m Provider) GetByHeight(h int) (certifiers.Seed, error)
  • func (m Provider) StoreSeed(seed certifiers.Seed) error

Constants

const (
	Ext      = ".tsd"
	ValDir   = "validators"
	CheckDir = "checkpoints"
)

Types

type Provider

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

Provider stores all data in the filesystem We assume the same validator hash may be reused by many different headers/Checkpoints, and thus store it separately. This leaves us with three issues:

1. Given a validator hash, retrieve the validator set if previously stored 2. Given a block height, find the Checkpoint with the highest height <= h 3. Given a Seed, store it quickly to satisfy 1 and 2

Note that we do not worry about caching, as that can be achieved by pairing this with a MemStoreProvider and CacheProvider from certifiers

func NewProvider

func NewProvider(dir string) Provider

NewProvider creates the parent dir and subdirs for validators and checkpoints as needed

func (Provider) GetByHash

func (m Provider) GetByHash(hash []byte) (certifiers.Seed, error)

func (Provider) GetByHeight

func (m Provider) GetByHeight(h int) (certifiers.Seed, error)

func (Provider) StoreSeed

func (m Provider) StoreSeed(seed certifiers.Seed) error