kv

package
v0.2.1 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 27, 2021 License: Apache-2.0, BSD-2-Clause Imports: 4 Imported by: 4

Documentation

Index

Constants

View Source 
const EmptyPrefix = Key("")

Variables

This section is empty.

Functions

func ByteSize added in v0.2.0 

func ByteSize(s KVStoreReader) int

func MustGet added in v0.1.0 

func MustGet(kvs KVStoreReader, key Key) []byte

func MustHas added in v0.1.0 

func MustHas(kvs KVStoreReader, key Key) bool

func MustIterate added in v0.1.0 

func MustIterate(kvs KVStoreReader, prefix Key, f func(key Key, value []byte) bool)

func MustIterateKeys added in v0.1.0 

func MustIterateKeys(kvs KVStoreReader, prefix Key, f func(key Key) bool)

func MustIterateKeysSorted added in v0.2.0 

func MustIterateKeysSorted(kvs KVStoreReader, prefix Key, f func(key Key) bool)

func MustIterateSorted added in v0.2.0 

func MustIterateSorted(kvs KVStoreReader, prefix Key, f func(key Key, value []byte) bool)

Types

type DBError 

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

func (*DBError) Error 

func (d *DBError) Error() string

func (*DBError) Unwrap added in v0.2.0 

func (d *DBError) Unwrap() error

type HiveKVStoreReader added in v0.2.0 

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

HiveKVStoreReader is an implementation of KVStoreReader with an instance of hive's kvstore.KVStore as backend.

func NewHiveKVStoreReader added in v0.2.0 

func NewHiveKVStoreReader(db kvstore.KVStore) *HiveKVStoreReader

func (*HiveKVStoreReader) Get added in v0.2.0 

func (h *HiveKVStoreReader) Get(key Key) ([]byte, error)

Get returns the value, or nil if not found

func (*HiveKVStoreReader) Has added in v0.2.0 

func (h *HiveKVStoreReader) Has(key Key) (bool, error)

func (*HiveKVStoreReader) Iterate added in v0.2.0 

func (h *HiveKVStoreReader) Iterate(prefix Key, f func(key Key, value []byte) bool) error

func (*HiveKVStoreReader) IterateKeys added in v0.2.0 

func (h *HiveKVStoreReader) IterateKeys(prefix Key, f func(key Key) bool) error

func (*HiveKVStoreReader) IterateKeysSorted added in v0.2.0 

func (h *HiveKVStoreReader) IterateKeysSorted(prefix Key, f func(key Key) bool) error

func (*HiveKVStoreReader) IterateSorted added in v0.2.0 

func (h *HiveKVStoreReader) IterateSorted(prefix Key, f func(key Key, value []byte) bool) error

func (*HiveKVStoreReader) MustGet added in v0.2.0 

func (h *HiveKVStoreReader) MustGet(key Key) []byte

MustGet returns the value, or nil if not found

func (*HiveKVStoreReader) MustHas added in v0.2.0 

func (h *HiveKVStoreReader) MustHas(key Key) bool

func (*HiveKVStoreReader) MustIterate added in v0.2.0 

func (h *HiveKVStoreReader) MustIterate(prefix Key, f func(key Key, value []byte) bool)

func (*HiveKVStoreReader) MustIterateKeys added in v0.2.0 

func (h *HiveKVStoreReader) MustIterateKeys(prefix Key, f func(key Key) bool)

func (*HiveKVStoreReader) MustIterateKeysSorted added in v0.2.0 

func (h *HiveKVStoreReader) MustIterateKeysSorted(prefix Key, f func(key Key) bool)

func (*HiveKVStoreReader) MustIterateSorted added in v0.2.0 

func (h *HiveKVStoreReader) MustIterateSorted(prefix Key, f func(key Key, value []byte) bool)

type Item added in v0.2.0 

type Item struct {
	Key   Key
	Value []byte
}

type Items added in v0.2.0 

type Items []Item

func (Items) Len added in v0.2.0 

func (items Items) Len() int

func (Items) Less added in v0.2.0 

func (items Items) Less(i, j int) bool

func (Items) Swap added in v0.2.0 

func (items Items) Swap(i, j int)

type KVIterator added in v0.2.0 

type KVIterator interface {
	Iterate(prefix Key, f func(key Key, value []byte) bool) error
	IterateKeys(prefix Key, f func(key Key) bool) error

	IterateSorted(prefix Key, f func(key Key, value []byte) bool) error
	IterateKeysSorted(prefix Key, f func(key Key) bool) error
}

type KVMustIterator added in v0.2.0 

type KVMustIterator interface {
	MustIterate(prefix Key, f func(key Key, value []byte) bool)
	MustIterateKeys(prefix Key, f func(key Key) bool)

	MustIterateSorted(prefix Key, f func(key Key, value []byte) bool)
	MustIterateKeysSorted(prefix Key, f func(key Key) bool)
}

type KVMustReader added in v0.2.0 

type KVMustReader interface {
	// MustGet returns the value, or nil if not found
	MustGet(key Key) []byte
	MustHas(key Key) bool
}

type KVReader added in v0.2.0 

type KVReader interface {
	// Get returns the value, or nil if not found
	Get(key Key) ([]byte, error)
	Has(key Key) (bool, error)
}

type KVStore 

type KVStore interface {
	KVWriter
	KVStoreReader
}

KVStore represents a key-value store where both keys and values are arbitrary byte slices.

type KVStoreReader added in v0.1.0 

type KVStoreReader interface {
	KVReader
	KVIterator
	KVMustReader
	KVMustIterator
}

type KVWriter added in v0.2.0 

type KVWriter interface {
	Set(key Key, value []byte)
	Del(key Key)
}

type Key 

type Key string

Since map cannot have []byte as key, to avoid unnecessary conversions between string and []byte, we use string as key data type, but it does not necessarily have to be a valid UTF-8 string.

func (Key) HasPrefix 

func (k Key) HasPrefix(prefix Key) bool

func (Key) Hex added in v0.2.0 

func (k Key) Hex() string

Source Files

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Directories

Path Synopsis
optimism package implements primitives needed for te optimistic read of the chain's state
 optimism package implements primitives needed for te optimistic read of the chain's state

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