goleveldb

package

v0.0.0-...-bdd3411 Latest Latest Go to latest Published: Apr 15, 2015 License: MIT Imports: 7 Imported by: 0

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Repository

github.com/johnsto/go-kvq

Links

Open Source Insights

Documentation ¶

Index ¶

func Destroy(path string) error
func New(db *leveldb.DB) backend.DB
func NewMem() (backend.DB, error)
func Open(path string) (backend.DB, error)
type Batch
type Bucket
type DB
- func (db *DB) Bucket(name string) (backend.Bucket, error)
- func (db *DB) Close()

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Destroy ¶

func Destroy(path string) error

Destroy destroys the DB at the given path.

func New ¶

func New(db *leveldb.DB) backend.DB

New returns a DB from the given LevelDB instance.

func NewMem ¶

func NewMem() (backend.DB, error)

NewMem creates a new DB backed by memory only (i.e. not persistent)

func Open ¶

func Open(path string) (backend.DB, error)

Open creates or opens an existing DB at the given path.

Types ¶

type Batch ¶

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

Batch represents a set of put/delete operations to perform on a Bucket.

func (*Batch) Close ¶

func (b *Batch) Close()

Close discards this batch.

func (*Batch) Delete ¶

func (b *Batch) Delete(k []byte) error

Delete deletes the key `k`.

func (*Batch) Put ¶

func (b *Batch) Put(k, v []byte) error

Put sets the key `k` to value `v`.

type Bucket ¶

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

Bucket represents a goleveldb-backed queue, where each key is prefixed by the given namespace. All batch writes are synced by default.

func (*Bucket) Batch ¶

func (q *Bucket) Batch(fn func(backend.Batch) error) error

Batch enacts a number of operations in one atomic go. If the batch function returns a non-nil error, the batch is discarded and the error is returned to the caller. If the batch function returns nil, the batch is committed to the queue.

func (*Bucket) Clear ¶

func (q *Bucket) Clear() error

Clear removes all items from this queue.

func (*Bucket) ForEach ¶

func (q *Bucket) ForEach(fn func(k, v []byte) error) error

ForEach iterates through keys in the queue. If the iteration function returns a non-nil error, iteration stops and the error is returned to the caller.

func (*Bucket) Get ¶

func (q *Bucket) Get(k []byte) ([]byte, error)

Get returns the value stored at key `k`.

type DB ¶

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

DB encapsulates a LevelDB instance.

func (*DB) Bucket ¶

func (db *DB) Bucket(name string) (backend.Bucket, error)

Bucket returns a queue in the given namespace.

func (*DB) Close ¶

func (db *DB) Close()

Close closes the database and releases any resources.

Source Files ¶

View all Source files

goleveldb.go

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