badgerdb

Documentation

Overview

Package badgerdb contains an implementation of the `gokv.Store` interface for BadgerDB.

Index

• Variables
• type Options
• type Store
  • func NewStore(options Options) (Store, error)
  • func (s Store) Close() error
  • func (s Store) Delete(k string) error
  • func (s Store) Get(k string, v interface{}) (found bool, err error)
  • func (s Store) Set(k string, v interface{}) error

Variables

var DefaultOptions = Options{
	Dir:   "BadgerDB",
	Codec: encoding.JSON,
}

DefaultOptions is an Options object with default values. Dir: "BadgerDB", Codec: encoding.JSON

Types

type Options

type Options struct {
	// Directory for storing the DB files.
	// Optional ("BadgerDB" by default).
	Dir string
	// Encoding format.
	// Optional (encoding.JSON by default).
	Codec encoding.Codec
}

Options are the options for the BadgerDB store.

type Store

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

Store is a gokv.Store implementation for BadgerDB.

func NewStore

func NewStore(options Options) (Store, error)

NewStore creates a new BadgerDB store. Note: BadgerDB uses an exclusive write lock on the database directory so it cannot be shared by multiple processes. So when creating multiple clients you should always use a new database directory (by setting a different Path in the options).

You must call the Close() method on the store when you're done working with it.

func (Store) Close

func (s Store) Close() error

Close closes the store. It must be called to make sure that all pending updates make their way to disk.

func (Store) Delete

func (s Store) Delete(k string) error

Delete deletes the stored value for the given key. Deleting a non-existing key-value pair does NOT lead to an error. The key must not be "".

func (Store) Get

func (s Store) Get(k string, v interface{}) (found bool, err error)

Get retrieves the stored value for the given key. You need to pass a pointer to the value, so in case of a struct the automatic unmarshalling can populate the fields of the object that v points to with the values of the retrieved object's values. If no value is found it returns (false, nil). The key must not be "" and the pointer must not be nil.

func (Store) Set

func (s Store) Set(k string, v interface{}) error

Set stores the given value for the given key. Values are automatically marshalled to JSON or gob (depending on the configuration). The key must not be "" and the value must not be nil.