memstore

Documentation

Overview

Package memstore implements the blob.Store and blob.KV interfaces using in-memory dictionaries. This is primarily useful for testing, as the contents are not persisted.

Index

• func Opener(_ context.Context, _ string) (blob.StoreCloser, error)
• type KV
  • func NewKV() *KV
  • func (s *KV) Clear()
  • func (s *KV) Delete(_ context.Context, key string) error
  • func (s *KV) Get(_ context.Context, key string) ([]byte, error)
  • func (s *KV) Init(m map[string]string) *KV
  • func (s *KV) Len(context.Context) (int64, error)
  • func (s *KV) List(_ context.Context, start string, f func(string) error) error
  • func (s *KV) Put(_ context.Context, opts blob.PutOptions) error
  • func (s *KV) Size(_ context.Context, key string) (int64, error)
  • func (s *KV) Snapshot(m map[string]string) map[string]string
• type Store
  • func New(newKV func() blob.KV) *Store
  • func (s *Store) CAS(ctx context.Context, name string) (blob.CAS, error)
  • func (*Store) Close(context.Context) error
  • func (s *Store) KV(_ context.Context, name string) (blob.KV, error)
  • func (s *Store) Sub(_ context.Context, name string) (blob.Store, error)

Functions

func Opener

func Opener(_ context.Context, _ string) (blob.StoreCloser, error)

Opener constructs a blob.StoreCloser for use with the store package. The concrete type of the result is memstore.Store. The address is ignored, and an error is never returned.

Types

type KV

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

KV implements the blob.KV interface using an in-memory dictionary. The contents of a Store are not persisted. All operations on a memstore are safe for concurrent use by multiple goroutines.

func NewKV

func NewKV() *KV

NewKV constructs a new, empty key-value namespace.

func (*KV) Clear

func (s *KV) Clear()

Clear removes all keys and values from s.

func (*KV) Delete

func (s *KV) Delete(_ context.Context, key string) error

Delete implements part of blob.KV.

func (*KV) Get

func (s *KV) Get(_ context.Context, key string) ([]byte, error)

Get implements part of blob.KV.

func (*KV) Init

func (s *KV) Init(m map[string]string) *KV

Init replaces the contents of s with the keys and values in m. It returns s to permit chaining with construction.

func (*KV) Len

func (s *KV) Len(context.Context) (int64, error)

Len implements part of blob.KV.

func (*KV) List

func (s *KV) List(_ context.Context, start string, f func(string) error) error

List implements part of blob.KV.

func (*KV) Put

func (s *KV) Put(_ context.Context, opts blob.PutOptions) error

Put implements part of blob.KV.

func (*KV) Size

func (s *KV) Size(_ context.Context, key string) (int64, error)

Size implements part of blob.KV.

func (*KV) Snapshot

func (s *KV) Snapshot(m map[string]string) map[string]string

Snapshot copies a snapshot of the keys and values of s into m. If m == nil, a new empty map is allocated and returned. It returns m to allow chaining with construction.

type Store

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

A Store implements the blob.Store interface using an in-memory dictionary for each keyspace. A zero value is ready for use, but must not be copied after its first use.

func New

func New(newKV func() blob.KV) *Store

New constructs a new empty Store that uses newKV to construct keyspaces. If newKV == nil, NewKV is used.

func (*Store) CAS

func (s *Store) CAS(ctx context.Context, name string) (blob.CAS, error)

CAS implements part of blob.Store. This implementation never reports an error.

func (*Store) Close

func (*Store) Close(context.Context) error

Close implements part of blob.StoreCloser. This implementation is a no-op.

func (*Store) KV

func (s *Store) KV(_ context.Context, name string) (blob.KV, error)

KV implements part of blob.Store. This implementation never reports an error.

func (*Store) Sub

func (s *Store) Sub(_ context.Context, name string) (blob.Store, error)

Sub implements part of blob.Store. This implementation never reports an error.