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provider.go
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provider.go
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package memory
import (
"errors"
"github.com/phachon/fasthttpsession"
"reflect"
"time"
)
// session memory provider
const ProviderName = "memory"
type Provider struct {
config *Config
values *fasthttpsession.CCMap
maxLifeTime int64
}
// new memory provider
func NewProvider() *Provider {
return &Provider{
config: &Config{},
values: fasthttpsession.NewDefaultCCMap(),
maxLifeTime: 0,
}
}
// init provider config
func (mp *Provider) Init(lifeTime int64, memoryConfig fasthttpsession.ProviderConfig) error {
if memoryConfig.Name() != ProviderName {
return errors.New("session memory provider init error, config must memory config")
}
vc := reflect.ValueOf(memoryConfig)
mc := vc.Interface().(*Config)
mp.config = mc
mp.maxLifeTime = lifeTime
return nil
}
// need gc
func (mp *Provider) NeedGC() bool {
return true
}
// session garbage collection
func (mp *Provider) GC() {
for sessionId, value := range mp.values.GetAll() {
if time.Now().Unix() >= value.(*Store).lastActiveTime+mp.maxLifeTime {
// destroy session sessionId
mp.Destroy(sessionId)
return
}
}
}
// read session store by session id
func (mp *Provider) ReadStore(sessionId string) (fasthttpsession.SessionStore, error) {
memStore := mp.values.Get(sessionId)
if memStore != nil {
return memStore.(*Store), nil
}
newMemStore := NewMemoryStore(sessionId)
mp.values.Set(sessionId, newMemStore)
return newMemStore, nil
}
// regenerate session
func (mp *Provider) Regenerate(oldSessionId string, sessionId string) (fasthttpsession.SessionStore, error) {
memStoreInter := mp.values.Get(oldSessionId)
if memStoreInter != nil {
memStore := memStoreInter.(*Store)
// insert new session store
newMemStore := NewMemoryStoreData(sessionId, memStore.GetAll())
mp.values.Set(sessionId, newMemStore)
// delete old session store
mp.values.Delete(oldSessionId)
return newMemStore, nil
}
memStore := NewMemoryStore(sessionId)
mp.values.Set(sessionId, memStore)
return memStore, nil
}
// destroy session by sessionId
func (mp *Provider) Destroy(sessionId string) error {
mp.values.Delete(sessionId)
return nil
}
// session values count
func (mp *Provider) Count() int {
return mp.values.Count()
}
// register session provider
func init() {
fasthttpsession.Register(ProviderName, NewProvider())
}