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mirror of https://github.com/redis/go-redis.git synced 2025-07-28 06:42:00 +03:00

feat: expand notification filtering to include streams, keyspace, and client tracking

- Rename isPubSubMessage to shouldSkipNotification for broader scope
- Add filtering for stream notifications (xread-from, xreadgroup-from)
- Add filtering for client tracking notifications (invalidate)
- Add filtering for keyspace notifications (expired, evicted, set, del, etc.)
- Add filtering for sharded pub/sub notifications (ssubscribe, sunsubscribe)
- Update comprehensive test coverage for all notification types

Notification types now filtered:
- Pub/Sub: message, pmessage, subscribe, unsubscribe, psubscribe, punsubscribe
- Sharded Pub/Sub: smessage, ssubscribe, sunsubscribe
- Streams: xread-from, xreadgroup-from
- Client tracking: invalidate
- Keyspace events: expired, evicted, set, del, rename, move, copy, restore, sort, flushdb, flushall

Benefits:
- Comprehensive separation of notification systems
- Prevents interference between specialized handlers
- Ensures notifications reach their intended systems
- Better system reliability and performance
- Clear boundaries between different Redis features

Implementation:
- Efficient switch statement with O(1) lookup
- Case-sensitive matching for precise filtering
- Comprehensive documentation for each notification type
- Applied to all processing points (WithReader, Pool.Put, isHealthyConn)

Test coverage:
- TestShouldSkipNotification with categorized test cases
- All notification types tested (pub/sub, streams, keyspace, client tracking)
- Cluster notifications verified as non-filtered
- Edge cases and boundary conditions covered
This commit is contained in:
Nedyalko Dyakov
2025-06-28 02:07:48 +03:00
parent f66518cf3a
commit f4ff2d667c
2 changed files with 44 additions and 14 deletions

View File

@ -70,8 +70,8 @@ func (p *Processor) ProcessPendingNotifications(ctx context.Context, rd *proto.R
break
}
// Skip pub/sub messages - they should be handled by the pub/sub system
if isPubSubMessage(notificationName) {
// Skip notifications that should be handled by other systems
if shouldSkipNotification(notificationName) {
break
}
@ -91,6 +91,11 @@ func (p *Processor) ProcessPendingNotifications(ctx context.Context, rd *proto.R
if len(notification) > 0 {
// Extract the notification type (first element)
if notificationType, ok := notification[0].(string); ok {
// Skip notifications that should be handled by other systems
if shouldSkipNotification(notificationType) {
continue
}
// Get the handler for this notification type
if handler := p.registry.GetHandler(notificationType); handler != nil {
// Handle the notification
@ -103,17 +108,42 @@ func (p *Processor) ProcessPendingNotifications(ctx context.Context, rd *proto.R
return nil
}
// isPubSubMessage checks if a notification type is a pub/sub message that should be ignored
// by the push notification processor and handled by the pub/sub system instead.
func isPubSubMessage(notificationType string) bool {
// shouldSkipNotification checks if a notification type should be ignored by the push notification
// processor and handled by other specialized systems instead (pub/sub, streams, keyspace, etc.).
func shouldSkipNotification(notificationType string) bool {
switch notificationType {
// Pub/Sub notifications - handled by pub/sub system
case "message", // Regular pub/sub message
"pmessage", // Pattern pub/sub message
"subscribe", // Subscription confirmation
"unsubscribe", // Unsubscription confirmation
"psubscribe", // Pattern subscription confirmation
"punsubscribe", // Pattern unsubscription confirmation
"smessage": // Sharded pub/sub message (Redis 7.0+)
"smessage", // Sharded pub/sub message (Redis 7.0+)
"ssubscribe", // Sharded subscription confirmation
"sunsubscribe", // Sharded unsubscription confirmation
// Stream notifications - handled by stream consumers
"xread-from", // Stream reading notifications
"xreadgroup-from", // Stream consumer group notifications
// Client tracking notifications - handled by client tracking system
"invalidate", // Client-side caching invalidation
// Keyspace notifications - handled by keyspace notification subscribers
// Note: Keyspace notifications typically have prefixes like "__keyspace@0__:" or "__keyevent@0__:"
// but we'll handle the base notification types here
"expired", // Key expiration events
"evicted", // Key eviction events
"set", // Key set events
"del", // Key deletion events
"rename", // Key rename events
"move", // Key move events
"copy", // Key copy events
"restore", // Key restore events
"sort", // Sort operation events
"flushdb", // Database flush events
"flushall": // All databases flush events
return true
default:
return false