/
sessions.go
139 lines (110 loc) · 2.7 KB
/
sessions.go
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package persistence
import (
"sync"
)
type sessions struct {
status *dbStatus
entries sync.Map
}
type session struct {
lock sync.Mutex
state *SessionState
packets []PersistedPacket
}
func (s *sessions) Exists(id []byte) bool {
_, ok := s.entries.Load(string(id))
return ok
}
func (s *sessions) SubscriptionsStore(id []byte, data []byte) error {
elem, _ := s.entries.LoadOrStore(string(id), &session{})
ses := elem.(*session)
ses.lock.Lock()
defer ses.lock.Unlock()
if ses.state == nil {
ses.state = &SessionState{}
}
ses.state.Subscriptions = data
return nil
}
func (s *sessions) SubscriptionsDelete(id []byte) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
ses.lock.Lock()
defer ses.lock.Unlock()
ses.state.Subscriptions = []byte{}
}
return nil
}
func (s *sessions) PacketsForEach(id []byte, load func(PersistedPacket) error) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
for _, p := range ses.packets {
load(p) // nolint: errcheck
}
}
return nil
}
func (s *sessions) PacketsStore(id []byte, packets []PersistedPacket) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
ses.lock.Lock()
ses.packets = append(ses.packets, packets...)
ses.lock.Unlock()
}
return nil
}
func (s *sessions) PacketsDelete(id []byte) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
ses.lock.Lock()
ses.packets = []PersistedPacket{}
ses.lock.Unlock()
}
return nil
}
func (s *sessions) PacketStore(id []byte, packet PersistedPacket) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
ses.lock.Lock()
ses.packets = append(ses.packets, packet)
ses.lock.Unlock()
}
return nil
}
func (s *sessions) LoadForEach(load func([]byte, *SessionState) error) error {
var err error
s.entries.Range(func(key, value interface{}) bool {
sID := []byte(key.(string))
ses := value.(*SessionState)
err = load(sID, ses)
return err == nil
})
return err
}
func (s *sessions) StateStore(id []byte, state *SessionState) error {
elem, _ := s.entries.LoadOrStore(string(id), &session{})
ses := elem.(*session)
ses.lock.Lock()
defer ses.lock.Unlock()
if ses.state != nil {
if len(ses.state.Subscriptions) > 0 && len(state.Subscriptions) == 0 {
state.Subscriptions = ses.state.Subscriptions
}
}
ses.state = state
return nil
}
func (s *sessions) StateDelete(id []byte) error {
if elem, ok := s.entries.Load(string(id)); ok {
ses := elem.(*session)
ses.lock.Lock()
defer ses.lock.Unlock()
ses.state = nil
}
return nil
}
// Delete
func (s *sessions) Delete(id []byte) error {
s.entries.Delete(string(id))
return nil
}