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Production hardening: security, resilience, observability, and compliance

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Password complexity: custom validator requiring uppercase, lowercase, digit (min 8 chars)
Token expiry: 90-day token lifetime with refresh endpoint (60-90 day renewal window)
Health check: /api/health/ now pings Postgres + Redis, returns 503 on failure
Audit logging: async audit_log table for auth events (login, register, delete, etc.)
Circuit breaker: APNs/FCM push sends wrapped with 5-failure threshold, 30s recovery
FK indexes: 27 missing foreign key indexes across all tables (migration 017)
CSP header: default-src 'none'; frame-ancestors 'none'
Gzip compression: level 5 with media endpoint skipper
Prometheus metrics: /metrics endpoint using existing monitoring service
External timeouts: 15s push, 30s SMTP, context timeouts on all external calls

Migrations: 016 (token created_at), 017 (FK indexes), 018 (audit_log)
Tests: circuit breaker (15), audit service (8), token refresh (7), health (4),
       middleware expiry (5), validator (new)
This commit is contained in:
Trey T
2026-03-26 14:05:28 -05:00
parent 4abc57535e
commit b679f28e55
30 changed files with 2077 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

112
internal/middleware/auth.go
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@@ -12,6 +12,7 @@ import (
"gorm.io/gorm"
"github.com/treytartt/honeydue-api/internal/apperrors"
"github.com/treytartt/honeydue-api/internal/config"
"github.com/treytartt/honeydue-api/internal/models"
"github.com/treytartt/honeydue-api/internal/services"
)
@@ -28,24 +29,56 @@ const (
// UserCacheTTL is how long full user records are cached in memory to
// avoid hitting the database on every authenticated request.
UserCacheTTL = 30 * time.Second
// DefaultTokenExpiryDays is the default number of days before a token expires.
DefaultTokenExpiryDays = 90
)
// AuthMiddleware provides token authentication middleware
type AuthMiddleware struct {
db *gorm.DB
cache *services.CacheService
userCache *UserCache
db *gorm.DB
cache *services.CacheService
userCache *UserCache
tokenExpiryDays int
}
// NewAuthMiddleware creates a new auth middleware instance
func NewAuthMiddleware(db *gorm.DB, cache *services.CacheService) *AuthMiddleware {
return &AuthMiddleware{
db: db,
cache: cache,
userCache: NewUserCache(UserCacheTTL),
db: db,
cache: cache,
userCache: NewUserCache(UserCacheTTL),
tokenExpiryDays: DefaultTokenExpiryDays,
}
}
// NewAuthMiddlewareWithConfig creates a new auth middleware instance with configuration
func NewAuthMiddlewareWithConfig(db *gorm.DB, cache *services.CacheService, cfg *config.Config) *AuthMiddleware {
expiryDays := DefaultTokenExpiryDays
if cfg != nil && cfg.Security.TokenExpiryDays > 0 {
expiryDays = cfg.Security.TokenExpiryDays
}
return &AuthMiddleware{
db: db,
cache: cache,
userCache: NewUserCache(UserCacheTTL),
tokenExpiryDays: expiryDays,
}
}
// TokenExpiryDuration returns the token expiry duration.
func (m *AuthMiddleware) TokenExpiryDuration() time.Duration {
return time.Duration(m.tokenExpiryDays) * 24 * time.Hour
}
// isTokenExpired checks if a token's created timestamp indicates expiry.
func (m *AuthMiddleware) isTokenExpired(created time.Time) bool {
if created.IsZero() {
return false // Legacy tokens without created time are not expired
}
return time.Since(created) > m.TokenExpiryDuration()
}
// TokenAuth returns an Echo middleware that validates token authentication
func (m *AuthMiddleware) TokenAuth() echo.MiddlewareFunc {
return func(next echo.HandlerFunc) echo.HandlerFunc {
@@ -56,7 +89,7 @@ func (m *AuthMiddleware) TokenAuth() echo.MiddlewareFunc {
return apperrors.Unauthorized("error.not_authenticated")
}
// Try to get user from cache first
// Try to get user from cache first (includes expiry check)
user, err := m.getUserFromCache(c.Request().Context(), token)
if err == nil && user != nil {
// Cache hit - set user in context and continue
@@ -65,16 +98,27 @@ func (m *AuthMiddleware) TokenAuth() echo.MiddlewareFunc {
return next(c)
}
// Check if the cache indicated token expiry
if err != nil && err.Error() == "token expired" {
return apperrors.Unauthorized("error.token_expired")
}
// Cache miss - look up token in database
user, err = m.getUserFromDatabase(token)
user, authToken, err := m.getUserFromDatabaseWithToken(token)
if err != nil {
log.Debug().Err(err).Str("token", truncateToken(token)).Msg("Token authentication failed")
return apperrors.Unauthorized("error.invalid_token")
}
// Cache the user ID for future requests
if cacheErr := m.cacheUserID(c.Request().Context(), token, user.ID); cacheErr != nil {
log.Warn().Err(cacheErr).Msg("Failed to cache user ID")
// Check token expiry
if m.isTokenExpired(authToken.Created) {
log.Debug().Str("token", truncateToken(token)).Time("created", authToken.Created).Msg("Token expired")
return apperrors.Unauthorized("error.token_expired")
}
// Cache the user ID and token creation time for future requests
if cacheErr := m.cacheTokenInfo(c.Request().Context(), token, user.ID, authToken.Created); cacheErr != nil {
log.Warn().Err(cacheErr).Msg("Failed to cache token info")
}
// Set user in context
@@ -104,9 +148,9 @@ func (m *AuthMiddleware) OptionalTokenAuth() echo.MiddlewareFunc {
}
// Try database
user, err = m.getUserFromDatabase(token)
if err == nil {
m.cacheUserID(c.Request().Context(), token, user.ID)
user, authToken, err := m.getUserFromDatabaseWithToken(token)
if err == nil && !m.isTokenExpired(authToken.Created) {
m.cacheTokenInfo(c.Request().Context(), token, user.ID, authToken.Created)
c.Set(AuthUserKey, user)
c.Set(AuthTokenKey, token)
}
@@ -145,12 +189,13 @@ func extractToken(c echo.Context) (string, error) {
// getUserFromCache tries to get user from Redis cache, then from the
// in-memory user cache, before falling back to the database.
// Returns a "token expired" error if the cached creation time indicates expiry.
func (m *AuthMiddleware) getUserFromCache(ctx context.Context, token string) (*models.User, error) {
if m.cache == nil {
return nil, fmt.Errorf("cache not available")
}
userID, err := m.cache.GetCachedAuthToken(ctx, token)
userID, createdUnix, err := m.cache.GetCachedAuthTokenWithCreated(ctx, token)
if err != nil {
if err == redis.Nil {
return nil, fmt.Errorf("token not in cache")
@@ -158,6 +203,15 @@ func (m *AuthMiddleware) getUserFromCache(ctx context.Context, token string) (*m
return nil, err
}
// Check token expiry from cached creation time
if createdUnix > 0 {
created := time.Unix(createdUnix, 0)
if m.isTokenExpired(created) {
m.cache.InvalidateAuthToken(ctx, token)
return nil, fmt.Errorf("token expired")
}
}
// Try in-memory user cache first to avoid a DB round-trip
if cached := m.userCache.Get(userID); cached != nil {
if !cached.IsActive {
@@ -187,22 +241,38 @@ func (m *AuthMiddleware) getUserFromCache(ctx context.Context, token string) (*m
return &user, nil
}
// getUserFromDatabase looks up the token in the database and caches the
// resulting user record in memory.
func (m *AuthMiddleware) getUserFromDatabase(token string) (*models.User, error) {
// getUserFromDatabaseWithToken looks up the token in the database and returns
// both the user and the auth token record (for expiry checking).
func (m *AuthMiddleware) getUserFromDatabaseWithToken(token string) (*models.User, *models.AuthToken, error) {
var authToken models.AuthToken
if err := m.db.Preload("User").Where("key = ?", token).First(&authToken).Error; err != nil {
return nil, fmt.Errorf("token not found")
return nil, nil, fmt.Errorf("token not found")
}
// Check if user is active
if !authToken.User.IsActive {
return nil, fmt.Errorf("user is inactive")
return nil, nil, fmt.Errorf("user is inactive")
}
// Store in in-memory cache for subsequent requests
m.userCache.Set(&authToken.User)
return &authToken.User, nil
return &authToken.User, &authToken, nil
}
// getUserFromDatabase looks up the token in the database and caches the
// resulting user record in memory.
// Deprecated: Use getUserFromDatabaseWithToken for new code paths that need expiry checking.
func (m *AuthMiddleware) getUserFromDatabase(token string) (*models.User, error) {
user, _, err := m.getUserFromDatabaseWithToken(token)
return user, err
}
// cacheTokenInfo caches the user ID and token creation time for a token
func (m *AuthMiddleware) cacheTokenInfo(ctx context.Context, token string, userID uint, created time.Time) error {
if m.cache == nil {
return nil
}
return m.cache.CacheAuthTokenWithCreated(ctx, token, userID, created.Unix())
}
// cacheUserID caches the user ID for a token