async Task HandleApplicationMessageAsync(ProcessingApplicationMessage processingMessage, IApplicationMessageHandler current, BlockingCollection <IApplicationMessageHandler> queue)
{
var applicationMessage = processingMessage.ApplicationMessage;
var applicationMessageType = applicationMessage.GetType();
var handlerType = current.GetType();
var handlerMethod = handlerType.GetTypeInfo().GetMethod("HandleAsync", new[] { applicationMessageType });
var result = await Policy
.Handle <Exception>()
.OrResult <AsyncExecutedResult>(r => !r.Succeeded)
.WaitAndRetryForeverAsync(retryAttempt => TimeSpan.FromSeconds(Math.Pow(1, retryAttempt)),
(delegateResult, retryCount, retryAttempt) => logger.LogError(delegateResult.Exception ?? delegateResult.Result.Exception, $"应用消息处理器执行失败。 [ApplicationMessageType = {applicationMessageType}, ApplicationMessageId = {applicationMessage.Id}, ApplicationMessageHandlerType = {handlerType}, RetryCount = {retryCount}, RetryAttempt = {retryAttempt}]"))
.ExecuteAsync(() => (Task <AsyncExecutedResult>)handlerMethod.Invoke(current, new object[] { applicationMessage }));
if (result.Succeeded)
{
logger.LogDebug($"应用消息处理器执行成功。 [ApplicationMessageType = {applicationMessageType}, ApplicationMessageId = {applicationMessage.Id}, ApplicationMessageHandlerType = {handlerType}]");
if (!queue.IsCompleted && queue.TryTake(out var next) && next != null)
{
await HandleApplicationMessageAsync(processingMessage, next, queue);
}
else
{
await processingMessage.OnQueueProcessedAsync();
}
}
public void Enqueue(ProcessingApplicationMessage processingApplicationMessage)
{
lock (syncLock)
{
processingApplicationMessage.Queue = this;
queue.TryAdd(processingApplicationMessage);
}
lastActiveOn = DateTime.UtcNow;
TryStart();
}
