71 lines
2.5 KiB
Markdown
71 lines
2.5 KiB
Markdown
# ShrinkNetwork.Integration.EventBus
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把实现 `IShrinkEvent` 的网络事件与 ShrinkEventBus 2.0 连接。广播事件可从本地 Bus 转发到远端；请求事件可在远端 `PostAsync` 后回传 `EventResult` 与取消状态；delta 事件按版本去重。
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## 广播事件
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```csharp
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[ShrinkNetworkEvent]
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[ShrinkNetworkMessage(3001, "room/player_ready")]
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public sealed class PlayerReadyEvent : IShrinkEvent, IShrinkNetworkMessage
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{
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public string PlayerId { get; set; } = string.Empty;
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}
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```
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```csharp
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EventBus.Post(new PlayerReadyEvent { PlayerId = "10001" });
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await session.PublishEventAsync(new PlayerReadyEvent { PlayerId = "10001" });
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```
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事件必须同时实现 `IShrinkEvent`、`IShrinkNetworkMessage`，并声明 `[ShrinkNetworkEvent]` 与 `[ShrinkNetworkMessage]`。本包的 ILPostProcessor 为每个事件生成强类型入站 dispatcher 和模块注册，不在运行时扫描程序集、构造泛型方法或反射调用 handler。
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## 远端裁决
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```csharp
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[ShrinkNetworkEvent]
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[ShrinkNetworkMessage(3010, "room/can_use_skill")]
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public sealed class CanUseSkillEvent :
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IShrinkResultEvent<EventResult>, IShrinkCancelableEvent, IShrinkNetworkRequest
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{
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private EventResult _result;
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private bool _canceled;
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public EventResult Result => _result;
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public bool IsCanceled => _canceled;
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public void SetResult(EventResult value) => _result = value;
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public void SetCanceled(bool value) => _canceled = value;
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}
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```
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```csharp
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var outcome = await session.RequestEventAsync(new CanUseSkillEvent());
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```
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请求事件必须实现 `IShrinkResultEvent<EventResult>` 与 `IShrinkNetworkRequest`。如果需要取消回传，再实现 `IShrinkCancelableEvent`。当前响应只包含 `EventResult`、取消状态和 RPC 错误，不自动回传事件上的其它可变字段。
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## Delta
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实现 `IShrinkNetworkDeltaEvent` 后，入站按 `SessionId + EventType + DeltaKey` 记录最高 `DeltaVersion`；旧版本和重复版本不会进入 Bus。
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## 接入
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ContextLoader 默认通过 `ShrinkNetworkEventBusComponent` 接桥。Standalone：
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```csharp
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service.UseEventBusBridge(new ShrinkNetworkEventBusBridgeOptions
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{
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SessionFilter = (session, value) => session.SessionId > 0
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});
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```
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可用发送扩展：
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```csharp
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session.PublishEventAsync(eventData);
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session.RequestEventAsync(eventData);
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service.BroadcastEventAsync(eventData);
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```
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远端事件重入 Bus 时会抑制回环转发。网络桥只观察 `EventBus` 全局宿主管理的 Bus；独立 `ShrinkEventBusHost` 不会被自动网络转发。
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