mem

Documentation

Overview

Package mem implements a mock store that keeps all chunk data in memory. While it can be used for testing on smaller scales, the main purpose of this package is to provide the simplest reference implementation of a mock store.

Index

• type GlobalStore
  • func NewGlobalStore() *GlobalStore
  • func (s *GlobalStore) Delete(addr common.Address, key []byte) error
  • func (s *GlobalStore) Export(w io.Writer) (n int, err error)
  • func (s *GlobalStore) Get(addr common.Address, key []byte) (data []byte, err error)
  • func (s *GlobalStore) HasKey(addr common.Address, key []byte) bool
  • func (s *GlobalStore) Import(r io.Reader) (n int, err error)
  • func (s *GlobalStore) NewNodeStore(addr common.Address) *mock.NodeStore
  • func (s *GlobalStore) Put(addr common.Address, key []byte, data []byte) error

Types

type GlobalStore

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

GlobalStore stores all chunk data and also keys and node addresses relations. It implements mock.GlobalStore interface.

func NewGlobalStore

func NewGlobalStore() *GlobalStore

NewGlobalStore creates a new instance of GlobalStore.

func (*GlobalStore) Delete

func (s *GlobalStore) Delete(addr common.Address, key []byte) error

Delete removes the chunk data for node with address addr.

func (*GlobalStore) Export

func (s *GlobalStore) Export(w io.Writer) (n int, err error)

Export writes to a writer a tar archive with all chunk data from the store. It returns the number of chunks exported and an error.

func (*GlobalStore) Get

func (s *GlobalStore) Get(addr common.Address, key []byte) (data []byte, err error)

Get returns chunk data if the chunk with key exists for node on address addr.

func (*GlobalStore) HasKey

func (s *GlobalStore) HasKey(addr common.Address, key []byte) bool

HasKey returns whether a node with addr contains the key.

func (*GlobalStore) Import

func (s *GlobalStore) Import(r io.Reader) (n int, err error)

Import reads tar archive from a reader that contains exported chunk data. It returns the number of chunks imported and an error.

func (*GlobalStore) NewNodeStore

func (s *GlobalStore) NewNodeStore(addr common.Address) *mock.NodeStore

NewNodeStore returns a new instance of NodeStore that retrieves and stores chunk data only for a node with address addr.

func (*GlobalStore) Put

func (s *GlobalStore) Put(addr common.Address, key []byte, data []byte) error

Put saves the chunk data for node with address addr.