/// <summary>
/// Если в кеше, есть ответное сообщение на входящее сообщение, тогда возвращает объект из кеша.
/// </summary>
/// <param name="exchange">Конвейер обработки сообщений.</param>
/// <param name="invoker">Фильтры вызывающий конвейер.</param>
/// <returns>Задача обработки сообщений.</returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
if (!exchange.IsIncompleteRequest)
{
return invoker.Continue(exchange);
}
string hash = this.hasher.CalculateHashOf(exchange.Out).ToString();
Maybe<object> cached = this.cacheProvider.Find<object>(hash);
if (cached.HasValue)
{
exchange.In = new Message(MessageLabel.Empty, cached.Value);
return Filter.Result(exchange);
}
return invoker.Continue(exchange)
.ContinueWith(
t =>
{
MessageExchange resultExchange = t.Result;
if (!resultExchange.IsCompleteRequest)
{
return resultExchange;
}
string expiresHeader = Headers.GetString(resultExchange.In.Headers, Headers.Expires);
if (!string.IsNullOrEmpty(expiresHeader))
{
Expires expiration = Expires.Parse(expiresHeader);
if (expiration.Period.HasValue)
{
this.cacheProvider.Put(hash, resultExchange.In.Payload, expiration.Period.Value);
}
else
{
this.cacheProvider.Put(hash, resultExchange.In.Payload, expiration.Date.Value);
}
}
return resultExchange;
});
}
public void should_invoke_starting_with_recent()
{
var log = new List<string>();
var filters = new[] { new LoggingFilter("A", log), new LoggingFilter("B", log), new LoggingFilter("C", log) };
var exchange = new MessageExchange(new Message("msg".ToMessageLabel(), new object()));
var invoker = new MessageExchangeFilterInvoker(filters);
invoker.Process(exchange).
Wait(1.Seconds());
log.Should().
BeEquivalentTo(new object[] { "C: before", "B: before", "A: before", "A: after", "B: after", "C: after" });
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
this._log.Add(this._name + ": before");
if (this._stop)
{
return Filter.Result(exchange);
}
return invoker.Continue(exchange).
ContinueWith(
t =>
{
this._log.Add(this._name + ": after");
return t.Result;
});
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task <MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
return(this._sendingAction(exchange).ContinueWith(_ => invoker.Continue(exchange).Result));
}
/// <summary>
/// The process.
/// </summary>
/// <param name="exchange">
/// The exchange.
/// </param>
/// <param name="invoker">
/// The invoker.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public Task<MessageExchange> Process(MessageExchange exchange, MessageExchangeFilterInvoker invoker)
{
return this._sendingAction(exchange).ContinueWith(_ => invoker.Continue(exchange).Result);
}