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Index ¶
Constants ¶
This section is empty.
Variables ¶
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var ( // ErrInvalidDB indicates invalid operation attempted to Blockchain database ErrInvalidDB = errors.New("invalid DB operation") // ErrNotExist indicates certain item does not exist in Blockchain database ErrNotExist = errors.New("not exist in DB") // ErrAlreadyExist indicates certain item already exists in Blockchain database ErrAlreadyExist = errors.New("already exist in DB") )
Functions ¶
This section is empty.
Types ¶
type KVStore ¶
type KVStore interface {
service.Service
// Put insert or update a record identified by (namespace, key)
Put(string, []byte, []byte) error
// BatchPut insert or update a slice of records identified by (namespace, key)
BatchPut(string, [][]byte, [][]byte) error
// Put puts a record only if (namespace, key) doesn't exist, otherwise return ErrAlreadyExist
PutIfNotExists(string, []byte, []byte) error
// Get gets a record by (namespace, key)
Get(string, []byte) ([]byte, error)
// Delete deletes a record by (namespace, key)
Delete(string, []byte) error
}
KVStore is the interface of KV store.
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