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using System;
using System.Collections.Generic;
namespace ServiceStack.Messaging
{
/// <summary>
/// Simple definition of an MQ Host
/// </summary>
public interface IMessageService
: IDisposable
{
/// <summary>
/// Factory to create consumers and producers that work with this service
/// </summary>
IMessageFactory MessageFactory { get; }
/// <summary>
/// Register DTOs and hanlders the MQ Server will process
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="processMessageFn"></param>
void RegisterHandler<T>(Func<IMessage<T>, object> processMessageFn);
/// <summary>
/// Register DTOs and hanlders the MQ Server will process using specified number of threads
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="processMessageFn"></param>
/// <param name="noOfThreads"></param>
void RegisterHandler<T>(Func<IMessage<T>, object> processMessageFn, int noOfThreads);
/// <summary>
/// Register DTOs and hanlders the MQ Server will process
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="processMessageFn"></param>
/// <param name="processExceptionEx"></param>
void RegisterHandler<T>(Func<IMessage<T>, object> processMessageFn, Action<IMessageHandler, IMessage<T>, Exception> processExceptionEx);
/// <summary>
/// Register DTOs and hanlders the MQ Server will process using specified number of threads
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="processMessageFn"></param>
/// <param name="processExceptionEx"></param>
/// <param name="noOfThreads"></param>
void RegisterHandler<T>(Func<IMessage<T>, object> processMessageFn, Action<IMessageHandler, IMessage<T>, Exception> processExceptionEx, int noOfThreads);
/// <summary>
/// Get Total Current Stats for all Message Handlers
/// </summary>
/// <returns></returns>
IMessageHandlerStats GetStats();
/// <summary>
/// Get a list of all message types registered on this MQ Host
/// </summary>
List<Type> RegisteredTypes { get; }
/// <summary>
/// Get the status of the service. Potential Statuses: Disposed, Stopped, Stopping, Starting, Started
/// </summary>
/// <returns></returns>
string GetStatus();
/// <summary>
/// Get a Stats dump
/// </summary>
/// <returns></returns>
string GetStatsDescription();
/// <summary>
/// Start the MQ Host if not already started.
/// </summary>
void Start();
/// <summary>
/// Stop the MQ Host if not already stopped.
/// </summary>
void Stop();
}
}