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