/// <summary>
/// 订阅消息
/// </summary>
/// <param name="streamNamespaces">(自己作为Observer)侦听的StreamNamespace</param>
/// <param name="token">StreamSequenceToken</param>
protected async Task SubscribeAsync(string streamNamespaces, StreamSequenceToken token = null)
{
IAsyncStream <TEvent> worker = ClusterClient.GetSimpleMessageStreamProvider().GetStream <TEvent>(StreamId, streamNamespaces);
await SubscribeAsync(worker, token);
ListenStreamWorkers[streamNamespaces] = worker;
}
/// <summary>
/// 发送消息
/// </summary>
protected Task Send(TEvent content, string streamNamespace = Standards.UnknownValue, StreamSequenceToken token = null)
{
return(ClusterClient.GetSimpleMessageStreamProvider().GetStream <TEvent>(StreamId, streamNamespace).OnNextAsync(content, token));
}
/// <summary>
/// 获取Orleans流提供者
/// </summary>
/// <param name="clusterId">Orleans集群的唯一ID</param>
/// <param name="serviceId">Orleans服务的唯一ID</param>
/// <param name="connectionString">Orleans数据库连接串</param>
/// <returns>流提供者</returns>
public static IStreamProvider Fetch(string clusterId, string serviceId, string connectionString)
{
return(_cache.GetValue(String.Format("{0}*{1}", clusterId, serviceId), () => ClusterClient.Fetch(clusterId, serviceId, connectionString).GetStreamProvider(Name)));
}
/// <summary>
/// 获取Orleans流提供者
/// </summary>
/// <returns>Orleans流提供者</returns>
public static IStreamProvider Fetch()
{
return(ClusterClient.Fetch().GetStreamProvider(Name));
}