我想要针对特定使用者的两个单独的重试策略。一个用于HttpRequestException
和SocketException
,另一个用于自定义DatabaseException
和未处理的SqlException
。之所以要这样做,是因为我想为两者设置单独的指数重试间隔。
我有以下配置:
cfg.ReceiveEndpoint(
host,
"ExampleQueueName",
ec =>
{
ec.Consumer<ExampleConsumer>(context);
ec.EnablePriority(5);
ec.UseRetry(retryConfig =>
{
// exponential backup in minutes
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<HttpRequestException>(x => x.IsTransient());
retryConfig.Handle<SocketException>(x => x.IsTransient());
});
ec.UseRetry(retryConfig =>
{
// exponential backup in seconds
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<DatabaseException>(x => x.IsTransient());
retryConfig.Handle<SqlException>(x => x.IsTransient());
});
});
当前,仅使用第二个。第一个似乎已被覆盖。
我还尝试过配置二级重试,如下所示:
cfg.ReceiveEndpoint(
host,
"QueueName",
ec =>
{
ec.Consumer<ExampleConsumer>(context, factory =>
{
factory.UseRetry(retryConfig =>
{
// exponential backup in seconds for sql and concurrency exceptions
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<DatabaseException>(x => x.IsTransient());
retryConfig.Handle<SqlException>(x => x.IsTransient());
});
});
ec.EnablePriority(5);
ec.UseRetry(retryConfig =>
{
// exponential backup in minutes for http request exceptions
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<DatabaseException>(x => x.IsTransient());
retryConfig.Handle<SqlException>(x => x.IsTransient());
});
});
但这似乎也不起作用。有没有人知道如何为不同的异常类型应用不同的重试间隔?
答案 0 :(得分:0)
MassTransit将所有内容构建为管道,并且过滤器的顺序很重要。在上面重写您的示例应该可以解决该问题(我所做的只是将Consumer移至末尾)。
cfg.ReceiveEndpoint(
host,
"ExampleQueueName",
ec =>
{
ec.EnablePriority(5);
ec.UseRetry(retryConfig =>
{
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<HttpRequestException>(x => x.IsTransient());
retryConfig.Handle<SocketException>(x => x.IsTransient());
});
ec.UseRetry(retryConfig =>
{
retryConfig.Intervals(new[] { 1, 2, 4, 8, 16, 32 }.Select(t => TimeSpan.FromSeconds(t)).ToArray());
retryConfig.Handle<DatabaseException>(x => x.IsTransient());
retryConfig.Handle<SqlException>(x => x.IsTransient());
});
ec.Consumer<ExampleConsumer>(context);
});