IM/backend/IM_API/Configs/MQConfig.cs

using AutoMapper;
using IM_API.Application.EventHandlers.FriendAddHandler;
using IM_API.Application.EventHandlers.MessageCreatedHandler;
using IM_API.Application.EventHandlers.RequestFriendHandler;
using IM_API.Configs.Options;
using MassTransit;
using MySqlConnector;

namespace IM_API.Configs
{
    public static class MQConfig
    {
        public static IServiceCollection AddRabbitMQ(this IServiceCollection services, RabbitMQOptions options)
        {
            services.AddMassTransit(x =>
            {
                x.AddConsumer<ConversationEventHandler>();
                x.AddConsumer<SignalREventHandler>();
                x.AddConsumer<FriendAddDBHandler>();
                x.AddConsumer<FriendAddSignalRHandler>();
                x.AddConsumer<RequestFriendSignalRHandler>();
                x.AddConsumer<FriendAddConversationHandler>();
                x.AddConsumer<MessageCreatedDbHandler>();
                x.UsingRabbitMq((ctx,cfg) =>
                {
                    cfg.Host(options.Host, "/", h =>
                    {
                        h.Username(options.Username);
                        h.Password(options.Password);
                    });
                    cfg.ConfigureEndpoints(ctx);
                    cfg.UseMessageRetry(r =>
                    {
                        r.Handle<IOException>();
                        r.Handle<MySqlException>();
                        r.Ignore<AutoMapperMappingException>();
                        r.Exponential(5, TimeSpan.FromSeconds(1), TimeSpan.FromSeconds(60), TimeSpan.FromSeconds(2));
                    });
                    cfg.ConfigureEndpoints(ctx);
            });
            });
            

            return services;
        }
    }

    
}