testdb

README

Testdb

This package contains an in memory DB for testing purpose only. The original code was copied from https://github.com/tendermint/tm-db/tree/v0.6.7 to decouple project dependencies.

All credits and a big thank you go to the original authors!

Documentation

Index

• type Iterator
• type MemDB
  • func NewMemDB() *MemDB
  • func (db *MemDB) Close() error
  • func (db *MemDB) Delete(key []byte) error
  • func (db *MemDB) DeleteSync(key []byte) error
  • func (db *MemDB) Get(key []byte) ([]byte, error)
  • func (db *MemDB) Has(key []byte) (bool, error)
  • func (db *MemDB) Iterator(start, end []byte) (Iterator, error)
  • func (db *MemDB) IteratorNoMtx(start, end []byte) (Iterator, error)
  • func (db *MemDB) Print() error
  • func (db *MemDB) ReverseIterator(start, end []byte) (Iterator, error)
  • func (db *MemDB) ReverseIteratorNoMtx(start, end []byte) (Iterator, error)
  • func (db *MemDB) Set(key []byte, value []byte) error
  • func (db *MemDB) SetSync(key []byte, value []byte) error
  • func (db *MemDB) Stats() map[string]string

Types

type Iterator

type Iterator = types.Iterator

type MemDB

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

MemDB is an in-memory database backend using a B-tree for storage.

For performance reasons, all given and returned keys and values are pointers to the in-memory database, so modifying them will cause the stored values to be modified as well. All DB methods already specify that keys and values should be considered read-only, but this is especially important with MemDB.

func NewMemDB

func NewMemDB() *MemDB

NewMemDB creates a new in-memory database.

func (*MemDB) Close

func (db *MemDB) Close() error

Close implements DB.

func (*MemDB) Delete

func (db *MemDB) Delete(key []byte) error

Delete implements DB.

func (*MemDB) DeleteSync

func (db *MemDB) DeleteSync(key []byte) error

DeleteSync implements DB.

func (*MemDB) Get

func (db *MemDB) Get(key []byte) ([]byte, error)

Get implements DB.

func (*MemDB) Has

func (db *MemDB) Has(key []byte) (bool, error)

Has implements DB.

func (*MemDB) Iterator

func (db *MemDB) Iterator(start, end []byte) (Iterator, error)

Iterator implements DB. Takes out a read-lock on the database until the iterator is closed.

func (*MemDB) IteratorNoMtx

func (db *MemDB) IteratorNoMtx(start, end []byte) (Iterator, error)

IteratorNoMtx makes an iterator with no mutex.

func (*MemDB) Print

func (db *MemDB) Print() error

Print implements DB.

func (*MemDB) ReverseIterator

func (db *MemDB) ReverseIterator(start, end []byte) (Iterator, error)

ReverseIterator implements DB. Takes out a read-lock on the database until the iterator is closed.

func (*MemDB) ReverseIteratorNoMtx

func (db *MemDB) ReverseIteratorNoMtx(start, end []byte) (Iterator, error)

ReverseIteratorNoMtx makes an iterator with no mutex.

func (*MemDB) Set

func (db *MemDB) Set(key []byte, value []byte) error

Set implements DB.

func (*MemDB) SetSync

func (db *MemDB) SetSync(key []byte, value []byte) error

SetSync implements DB.

func (*MemDB) Stats

func (db *MemDB) Stats() map[string]string

Stats implements DB.