dispatchMessage 分发单条消息
(env envelope)
| 431 | |
| 432 | // dispatchMessage 分发单条消息 |
| 433 | func (s *System) dispatchMessage(env envelope) { |
| 434 | s.actorsMu.RLock() |
| 435 | cell, exists := s.actors[env.target.ID] |
| 436 | s.actorsMu.RUnlock() |
| 437 | |
| 438 | if !exists { |
| 439 | // Actor 不存在，发送到死信 |
| 440 | select { |
| 441 | case s.deadLetters <- env: |
| 442 | atomic.AddInt64(&s.stats.DeadLetters, 1) |
| 443 | default: |
| 444 | } |
| 445 | return |
| 446 | } |
| 447 | |
| 448 | // 投递到 Actor 邮箱 |
| 449 | select { |
| 450 | case cell.mailbox <- env: |
| 451 | default: |
| 452 | // Actor 邮箱满，背压处理 |
| 453 | actorLog.Warn(context.Background(), "actor mailbox full, message queued to dead letter", map[string]any{"actor_id": env.target.ID}) |
| 454 | select { |
| 455 | case s.deadLetters <- env: |
| 456 | atomic.AddInt64(&s.stats.DeadLetters, 1) |
| 457 | default: |
| 458 | } |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | // actorLoop Actor 消息处理循环 |
| 463 | func (s *System) actorLoop(cell *actorCell) { |