public void Configure(IApplicationBuilder app,
IEventStoreBus eventBus,
IEventStoreProjections projections,
WebSocketHandler wsHandler,
VotingReadModelService readModelService,
ILogger <Startup> logger)
{
app.UseCors("CorsPolicy");
app.UseMvc();
app.UseSwagger();
app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "Voting API"));
app.UseWebSockets();
app.MapWebSocketManager("/ws", wsHandler);
projections.CreateAsync(Projections.Voting)
.DefaultRetryAsync()
.Wait();
eventBus.Subscribe(
async(@event) =>
{
var snapshot = await readModelService.AddOrUpdate(@event);
logger.LogInformation(snapshot.ToString());
await wsHandler.SendMessageToAllAsync(snapshot);
})
.DefaultRetryAsync()
.Wait();
}
public async Task Subscribe <TAggregate>(Func <Guid, object, Task> messageSender)
where TAggregate : IAggregate
{
await DefaultRetryAsync(() => SubscribeImpl());
async Task SubscribeImpl()
{
var streamName = $"{typeof(TAggregate).Name}Stream";
await _projections.CreateAsync(streamName, DefaultProjection.Default(typeof(TAggregate).Name, streamName));
await Subscribe(streamName, messageSender);
}
}