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Initialize Redis-backed RoomRegistry for room-to-pod assignment and add Pod-specific game.join handling logic with NATS subscriptions. Update cache-busting version for client assets.
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This commit is contained in:
Sebastian Unterschütz
2026-01-04 20:38:18 +01:00
parent 1417d3ceb2
commit f121fa5ced
4 changed files with 172 additions and 6 deletions

105
cmd/server/room_registry.go Normal file
View File

@@ -0,0 +1,105 @@
package main
import (
"context"
"fmt"
"log"
"time"
"github.com/redis/go-redis/v9"
)
// RoomRegistry verwaltet die Zuordnung von Räumen zu Pods via Redis
type RoomRegistry struct {
client *redis.Client
ctx context.Context
podID string // Eindeutige Pod-ID
ttl time.Duration
}
// NewRoomRegistry erstellt eine neue Room-Registry
func NewRoomRegistry(redisAddr string, podID string) (*RoomRegistry, error) {
client := redis.NewClient(&redis.Options{
Addr: redisAddr,
Password: "", // kein Password
DB: 0, // default DB
})
ctx := context.Background()
// Test connection
_, err := client.Ping(ctx).Result()
if err != nil {
return nil, fmt.Errorf("Redis connection failed: %w", err)
}
log.Printf("✅ Redis verbunden: %s", redisAddr)
return &RoomRegistry{
client: client,
ctx: ctx,
podID: podID,
ttl: 5 * time.Minute, // Räume verfallen nach 5 Minuten Inaktivität
}, nil
}
// ClaimRoom versucht, einen Raum für diesen Pod zu claimen
// Gibt zurück: (claimed bool, assignedPodID string, error)
func (rr *RoomRegistry) ClaimRoom(roomID string) (bool, string, error) {
key := fmt.Sprintf("room:%s:pod", roomID)
// Versuche den Raum zu claimen (nur wenn noch nicht existiert)
success, err := rr.client.SetNX(rr.ctx, key, rr.podID, rr.ttl).Result()
if err != nil {
return false, "", fmt.Errorf("failed to claim room: %w", err)
}
if success {
// Erfolgreich geclaimed!
log.Printf("🏠 Raum '%s' für Pod %s geclaimed", roomID, rr.podID)
return true, rr.podID, nil
}
// Raum existiert bereits - hole den zugewiesenen Pod
assignedPod, err := rr.client.Get(rr.ctx, key).Result()
if err == redis.Nil {
// Key existiert nicht mehr - retry
return rr.ClaimRoom(roomID)
} else if err != nil {
return false, "", fmt.Errorf("failed to get room pod: %w", err)
}
// Raum gehört einem anderen Pod
return false, assignedPod, nil
}
// RenewRoom erneuert die TTL eines Raums
func (rr *RoomRegistry) RenewRoom(roomID string) error {
key := fmt.Sprintf("room:%s:pod", roomID)
return rr.client.Expire(rr.ctx, key, rr.ttl).Err()
}
// GetRoomPod gibt den Pod zurück, der einen Raum hostet
func (rr *RoomRegistry) GetRoomPod(roomID string) (string, error) {
key := fmt.Sprintf("room:%s:pod", roomID)
podID, err := rr.client.Get(rr.ctx, key).Result()
if err == redis.Nil {
return "", fmt.Errorf("room not found")
}
return podID, err
}
// ReleaseRoom gibt einen Raum frei
func (rr *RoomRegistry) ReleaseRoom(roomID string) error {
key := fmt.Sprintf("room:%s:pod", roomID)
return rr.client.Del(rr.ctx, key).Err()
}
// IsMyRoom prüft, ob dieser Pod der Owner eines Raums ist
func (rr *RoomRegistry) IsMyRoom(roomID string) bool {
podID, err := rr.GetRoomPod(roomID)
if err != nil {
return false
}
return podID == rr.podID
}