/
preference_map_persister.go
97 lines (81 loc) · 2.06 KB
/
preference_map_persister.go
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package models
import (
"sync"
"time"
"github.com/jinzhu/copier"
"github.com/sirupsen/logrus"
)
// MapPreferencePersister assists with persisting session in a badger store
type MapPreferencePersister struct {
db *sync.Map
}
// NewMapPreferencePersister creates a new MapPreferencePersister instance
func NewMapPreferencePersister() (*MapPreferencePersister, error) {
return &MapPreferencePersister{
db: &sync.Map{},
}, nil
}
// ReadFromPersister reads the session data for the given userID
func (s *MapPreferencePersister) ReadFromPersister(userID string) (*Preference, error) {
data := &Preference{
AnonymousUsageStats: true,
AnonymousPerfResults: true,
}
if s.db == nil {
return nil, ErrDBConnection
}
if userID == "" {
return nil, ErrUserID
}
dataCopyB, ok := s.db.Load(userID)
if ok {
logrus.Debugf("retrieved session for user with id: %s", userID)
newData, ok1 := dataCopyB.(*Preference)
if ok1 {
logrus.Debugf("session for user with id: %s was read in tact.", userID)
data = newData
} else {
logrus.Warnf("session for user with id: %s was NOT read in tact.", userID)
}
} else {
logrus.Warnf("unable to find session for user with id: %s.", userID)
}
return data, nil
}
// WriteToPersister persists session for the user
func (s *MapPreferencePersister) WriteToPersister(userID string, data *Preference) error {
if s.db == nil {
return ErrDBConnection
}
if userID == "" {
return ErrUserID
}
if data == nil {
return ErrNilConfigData
}
data.UpdatedAt = time.Now()
newSess := &Preference{
AnonymousUsageStats: true,
AnonymousPerfResults: true,
}
if err := copier.Copy(newSess, data); err != nil {
return ErrSessionCopy(err)
}
s.db.Store(userID, newSess)
return nil
}
// DeleteFromPersister removes the session for the user
func (s *MapPreferencePersister) DeleteFromPersister(userID string) error {
if s.db == nil {
return ErrDBConnection
}
if userID == "" {
return ErrUserID
}
s.db.Delete(userID)
return nil
}
// ClosePersister closes the DB
func (s *MapPreferencePersister) ClosePersister() {
s.db = nil
}