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dex/session/repo.go

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2015-08-18 05:57:27 +05:30
package session
import (
"errors"
"time"
"github.com/jonboulle/clockwork"
)
type SessionRepo interface {
Get(string) (*Session, error)
Create(Session) error
Update(Session) error
}
type SessionKeyRepo interface {
Push(SessionKey, time.Duration) error
Pop(string) (string, error)
}
func NewSessionRepo() SessionRepo {
return NewSessionRepoWithClock(clockwork.NewRealClock())
}
func NewSessionRepoWithClock(clock clockwork.Clock) SessionRepo {
return &memSessionRepo{
store: make(map[string]Session),
clock: clock,
}
}
type memSessionRepo struct {
store map[string]Session
clock clockwork.Clock
}
func (m *memSessionRepo) Get(sessionID string) (*Session, error) {
s, ok := m.store[sessionID]
if !ok || s.ExpiresAt.Before(m.clock.Now()) {
return nil, errors.New("unrecognized ID")
}
return &s, nil
}
func (m *memSessionRepo) Create(s Session) error {
if _, ok := m.store[s.ID]; ok {
return errors.New("ID exists")
}
m.store[s.ID] = s
return nil
}
func (m *memSessionRepo) Update(s Session) error {
if _, ok := m.store[s.ID]; !ok {
return errors.New("unrecognized ID")
}
m.store[s.ID] = s
return nil
}
type expiringSessionKey struct {
SessionKey
expiresAt time.Time
}
func NewSessionKeyRepo() SessionKeyRepo {
return NewSessionKeyRepoWithClock(clockwork.NewRealClock())
}
func NewSessionKeyRepoWithClock(clock clockwork.Clock) SessionKeyRepo {
return &memSessionKeyRepo{
store: make(map[string]expiringSessionKey),
clock: clock,
}
}
type memSessionKeyRepo struct {
store map[string]expiringSessionKey
clock clockwork.Clock
}
func (m *memSessionKeyRepo) Pop(key string) (string, error) {
esk, ok := m.store[key]
if !ok {
return "", errors.New("unrecognized key")
}
defer delete(m.store, key)
if esk.expiresAt.Before(m.clock.Now()) {
return "", errors.New("expired key")
}
return esk.SessionKey.SessionID, nil
}
func (m *memSessionKeyRepo) Push(sk SessionKey, ttl time.Duration) error {
m.store[sk.Key] = expiringSessionKey{
SessionKey: sk,
expiresAt: m.clock.Now().Add(ttl),
}
return nil
}