db

Documentation

Overview

Package db implements a mock store that keeps all chunk data in LevelDB database.

Index

• type GlobalStore
  • func NewGlobalStore(path string) (s *GlobalStore, err error)
  • func (s *GlobalStore) Close() error
  • 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 contains the LevelDB database that is storing chunk data for all swarm nodes. Closing the GlobalStore with Close method is required to release resources used by the database.

func NewGlobalStore

func NewGlobalStore(path string) (s *GlobalStore, err error)

NewGlobalStore creates a new instance of GlobalStore.

func (*GlobalStore) Close

func (s *GlobalStore) Close() error

Close releases the resources used by the underlying LevelDB.

func (*GlobalStore) Delete

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

Delete removes the chunk reference to 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 fo 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.