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boltdb.go
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boltdb.go
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package bolt
import (
"runtime"
"time"
"github.com/admpub/boltstore/reaper"
"github.com/admpub/boltstore/store"
"github.com/admpub/sessions"
"github.com/boltdb/bolt"
"github.com/webx-top/echo"
"github.com/webx-top/echo/engine"
ss "github.com/webx-top/echo/middleware/session/engine"
)
func New(opts *BoltOptions) BoltStore {
store, err := NewBoltStore(opts)
if err != nil {
panic(err.Error())
}
return store
}
func Reg(store BoltStore, args ...string) {
name := `bolt`
if len(args) > 0 {
name = args[0]
}
ss.Reg(name, store)
}
func RegWithOptions(opts *BoltOptions, args ...string) {
Reg(New(opts), args...)
}
type BoltStore interface {
ss.Store
}
type BoltOptions struct {
File string `json:"file"`
KeyPairs [][]byte `json:"keyPairs"`
BucketName string `json:"bucketName"`
SessionOptions *echo.SessionOptions `json:"session"`
}
// NewBoltStore ./sessions.db
func NewBoltStore(opts *BoltOptions) (BoltStore, error) {
config := store.Config{
SessionOptions: sessions.Options{
Path: opts.SessionOptions.Path,
Domain: opts.SessionOptions.Domain,
MaxAge: opts.SessionOptions.MaxAge,
Secure: opts.SessionOptions.Secure,
HttpOnly: opts.SessionOptions.HttpOnly,
},
DBOptions: store.Options{BucketName: []byte(opts.BucketName)},
}
b := &boltStore{
config: &config,
keyPairs: opts.KeyPairs,
dbFile: opts.File,
Storex: &Storex{
Store: &store.Store{},
},
}
b.Storex.b = b
return b, nil
}
type Storex struct {
*store.Store
db *bolt.DB
b *boltStore
initialized bool
}
func (s *Storex) Get(ctx echo.Context, name string) (*sessions.Session, error) {
if s.initialized == false {
err := s.b.Init()
if err != nil {
return nil, err
}
}
return s.Store.Get(ctx, name)
}
func (s *Storex) New(r engine.Request, name string) (*sessions.Session, error) {
if s.initialized == false {
err := s.b.Init()
if err != nil {
return nil, err
}
}
return s.Store.New(r, name)
}
func (s *Storex) Save(r engine.Request, w engine.Response, session *sessions.Session) error {
if s.initialized == false {
err := s.b.Init()
if err != nil {
return err
}
}
return s.Store.Save(r, w, session)
}
type boltStore struct {
*Storex
config *store.Config
keyPairs [][]byte
quiteC chan<- struct{}
doneC <-chan struct{}
dbFile string
}
func (c *boltStore) Options(options echo.SessionOptions) {
c.config.SessionOptions = sessions.Options{
Path: options.Path,
Domain: options.Domain,
MaxAge: options.MaxAge,
Secure: options.Secure,
HttpOnly: options.HttpOnly,
}
stor, err := store.New(c.Storex.db, *c.config, c.keyPairs...)
if err != nil {
panic(err.Error())
}
c.Store = stor
}
func (c *boltStore) Close() error {
// Invoke a reaper which checks and removes expired sessions periodically.
if c.quiteC != nil && c.doneC != nil {
reaper.Quit(c.quiteC, c.doneC)
}
if c.Storex.db != nil {
c.Storex.db.Close()
}
return nil
}
func (b *boltStore) Init() error {
if b.Storex.db == nil {
var err error
b.Storex.db, err = bolt.Open(b.dbFile, 0666, nil)
if err != nil {
return err
}
b.Storex.Store, err = store.New(b.Storex.db, *b.config, b.keyPairs...)
if err != nil {
return err
}
b.quiteC, b.doneC = reaper.Run(b.Storex.db, reaper.Options{
BucketName: b.config.DBOptions.BucketName,
CheckInterval: time.Duration(int64(b.config.SessionOptions.MaxAge)) * time.Second,
})
runtime.SetFinalizer(b, func(b *boltStore) {
b.Close()
})
}
b.Storex.initialized = true
return nil
}