using System;
using System.Text.RegularExpressions;
namespace Tapeti.Default
{
///
///
/// IExchangeStrategy implementation which uses the first identifier in the namespace in lower case,
/// skipping the first identifier if it is 'Messaging'.
///
///
/// Messaging.Service.Optional.Further.Parts will result in the exchange name 'service'.
///
public class NamespaceMatchExchangeStrategy : IExchangeStrategy
{
private static readonly Regex NamespaceRegex = new("^(Messaging\\.)?(?[^\\.]+)", RegexOptions.Compiled | RegexOptions.Singleline);
///
public string GetExchange(Type messageType)
{
if (messageType.Namespace == null)
throw new ArgumentException($"{messageType.FullName} does not have a namespace");
var match = NamespaceRegex.Match(messageType.Namespace);
if (!match.Success)
throw new ArgumentException($"Namespace for {messageType.FullName} does not match the specified format");
return match.Groups["exchange"].Value.ToLower();
}
}
}