[PM-17562] Add support for retries on event integrations (#5795)

* [PM-17562] Add support for retires on event integrations

* Add additional test coverage

* Fixed missing await call

* Remove debug organization id

* Respond to PR feedback

* Change NotBeforeUtc to DelayUntilDate. Adjust comments.

* Respond to PR feedback

src/Api/AdminConsole/Controllers/SlackIntegrationController.cs

@@ -2,10 +2,10 @@
 using Bit.Api.AdminConsole.Models.Response.Organizations;
 using Bit.Core;
 using Bit.Core.AdminConsole.Entities;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.Context;
 using Bit.Core.Enums;
 using Bit.Core.Exceptions;
-using Bit.Core.Models.Data.Integrations;
 using Bit.Core.Repositories;
 using Bit.Core.Services;
 using Bit.Core.Utilities;

src/Api/AdminConsole/Models/Request/Organizations/OrganizationIntegrationConfigurationRequestModel.cs

@@ -1,8 +1,8 @@
 using System.ComponentModel.DataAnnotations;
 using System.Text.Json;
 using Bit.Core.AdminConsole.Entities;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.Enums;
-using Bit.Core.Models.Data.Integrations;
 
 #nullable enable
 

src/Api/Startup.cs

@@ -28,10 +28,8 @@ using Bit.Core.Tools.Entities;
 using Bit.Core.Vault.Entities;
 using Bit.Api.Auth.Models.Request.WebAuthn;
 using Bit.Api.Billing;
-using Bit.Core.AdminConsole.Services.NoopImplementations;
 using Bit.Core.Auth.Models.Data;
 using Bit.Core.Auth.Identity.TokenProviders;
-using Bit.Core.Services;
 using Bit.Core.Tools.ImportFeatures;
 using Bit.Core.Tools.ReportFeatures;
 using Bit.Core.Auth.Models.Api.Request;
@@ -224,18 +222,8 @@ public class Startup
             services.AddHostedService<Core.HostedServices.ApplicationCacheHostedService>();
         }
 
-        // Slack
-        if (CoreHelpers.SettingHasValue(globalSettings.Slack.ClientId) &&
-            CoreHelpers.SettingHasValue(globalSettings.Slack.ClientSecret) &&
-            CoreHelpers.SettingHasValue(globalSettings.Slack.Scopes))
-        {
-            services.AddHttpClient(SlackService.HttpClientName);
-            services.AddSingleton<ISlackService, SlackService>();
-        }
-        else
-        {
-            services.AddSingleton<ISlackService, NoopSlackService>();
-        }
+        // Add SlackService for OAuth API requests - if configured
+        services.AddSlackService(globalSettings);
     }
 
     public void Configure(

src/Core/AdminConsole/Enums/IntegrationType.cs

@@ -7,3 +7,19 @@ public enum IntegrationType : int
     Slack = 3,
     Webhook = 4,
 }
+
+public static class IntegrationTypeExtensions
+{
+    public static string ToRoutingKey(this IntegrationType type)
+    {
+        switch (type)
+        {
+            case IntegrationType.Slack:
+                return "slack";
+            case IntegrationType.Webhook:
+                return "webhook";
+            default:
+                throw new ArgumentOutOfRangeException(nameof(type), $"Unsupported integration type: {type}");
+        }
+    }
+}

src/Core/AdminConsole/Models/Data/Integrations/IIntegrationMessage.cs

@@ -0,0 +1,12 @@
+using Bit.Core.Enums;
+
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
+
+public interface IIntegrationMessage
+{
+    IntegrationType IntegrationType { get; }
+    int RetryCount { get; set; }
+    DateTime? DelayUntilDate { get; set; }
+    void ApplyRetry(DateTime? handlerDelayUntilDate);
+    string ToJson();
+}

src/Core/AdminConsole/Models/Data/Integrations/IntegrationHandlerResult.cs

@@ -0,0 +1,16 @@
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
+
+public class IntegrationHandlerResult
+{
+    public IntegrationHandlerResult(bool success, IIntegrationMessage message)
+    {
+        Success = success;
+        Message = message;
+    }
+
+    public bool Success { get; set; } = false;
+    public bool Retryable { get; set; } = false;
+    public IIntegrationMessage Message { get; set; }
+    public DateTime? DelayUntilDate { get; set; }
+    public string FailureReason { get; set; } = string.Empty;
+}

src/Core/AdminConsole/Models/Data/Integrations/IntegrationMessage.cs

@@ -0,0 +1,34 @@
+using System.Text.Json;
+using Bit.Core.Enums;
+
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
+
+public class IntegrationMessage<T> : IIntegrationMessage
+{
+    public IntegrationType IntegrationType { get; set; }
+    public T Configuration { get; set; }
+    public string RenderedTemplate { get; set; }
+    public int RetryCount { get; set; } = 0;
+    public DateTime? DelayUntilDate { get; set; }
+
+    public void ApplyRetry(DateTime? handlerDelayUntilDate)
+    {
+        RetryCount++;
+
+        var baseTime = handlerDelayUntilDate ?? DateTime.UtcNow;
+        var backoffSeconds = Math.Pow(2, RetryCount);
+        var jitterSeconds = Random.Shared.Next(0, 3);
+
+        DelayUntilDate = baseTime.AddSeconds(backoffSeconds + jitterSeconds);
+    }
+
+    public string ToJson()
+    {
+        return JsonSerializer.Serialize(this);
+    }
+
+    public static IntegrationMessage<T> FromJson(string json)
+    {
+        return JsonSerializer.Deserialize<IntegrationMessage<T>>(json);
+    }
+}

src/Core/AdminConsole/Models/Data/Integrations/IntegrationTemplateContext.cs

@@ -1,10 +1,11 @@
-using Bit.Core.AdminConsole.Entities;
+#nullable enable
+
+using Bit.Core.AdminConsole.Entities;
 using Bit.Core.Entities;
 using Bit.Core.Enums;
+using Bit.Core.Models.Data;
 
-#nullable enable
-
-namespace Bit.Core.Models.Data.Integrations;
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
 
 public class IntegrationTemplateContext(EventMessage eventMessage)
 {

src/Core/AdminConsole/Models/Data/Integrations/SlackIntegration.cs

@@ -1,3 +1,3 @@
-namespace Bit.Core.Models.Data.Integrations;
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
 
 public record SlackIntegration(string token);

src/Core/AdminConsole/Models/Data/Integrations/SlackIntegrationConfiguration.cs

@@ -1,3 +1,3 @@
-namespace Bit.Core.Models.Data.Integrations;
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
 
 public record SlackIntegrationConfiguration(string channelId);

src/Core/AdminConsole/Models/Data/Integrations/SlackIntegrationConfigurationDetails.cs

@@ -1,3 +1,3 @@
-namespace Bit.Core.Models.Data.Integrations;
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
 
 public record SlackIntegrationConfigurationDetails(string channelId, string token);

src/Core/AdminConsole/Models/Data/Integrations/WebhookIntegrationConfiguration.cs

@@ -1,3 +1,3 @@
-namespace Bit.Core.Models.Data.Integrations;
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
 
 public record WebhookIntegrationConfiguration(string url);

src/Core/AdminConsole/Models/Data/Integrations/WebhookIntegrationConfigurationDetails.cs

@@ -0,0 +1,3 @@
+namespace Bit.Core.AdminConsole.Models.Data.Integrations;
+
+public record WebhookIntegrationConfigurationDetails(string url);

src/Core/AdminConsole/Models/Data/Integrations/WebhookIntegrationConfigurationDetils.cs

@@ -1,3 +0,0 @@
-namespace Bit.Core.Models.Data.Integrations;
-
-public record WebhookIntegrationConfigurationDetils(string url);

src/Core/AdminConsole/Services/IIntegrationHandler.cs

@@ -0,0 +1,24 @@
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+
+namespace Bit.Core.Services;
+
+public interface IIntegrationHandler
+{
+    Task<IntegrationHandlerResult> HandleAsync(string json);
+}
+
+public interface IIntegrationHandler<T> : IIntegrationHandler
+{
+    Task<IntegrationHandlerResult> HandleAsync(IntegrationMessage<T> message);
+}
+
+public abstract class IntegrationHandlerBase<T> : IIntegrationHandler<T>
+{
+    public async Task<IntegrationHandlerResult> HandleAsync(string json)
+    {
+        var message = IntegrationMessage<T>.FromJson(json);
+        return await HandleAsync(message);
+    }
+
+    public abstract Task<IntegrationHandlerResult> HandleAsync(IntegrationMessage<T> message);
+}

src/Core/AdminConsole/Services/IIntegrationPublisher.cs

@@ -0,0 +1,8 @@
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+
+namespace Bit.Core.Services;
+
+public interface IIntegrationPublisher
+{
+    Task PublishAsync(IIntegrationMessage message);
+}

src/Core/AdminConsole/Services/Implementations/EventIntegrationHandler.cs

@@ -0,0 +1,83 @@
+using System.Text.Json;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+using Bit.Core.AdminConsole.Utilities;
+using Bit.Core.Enums;
+using Bit.Core.Models.Data;
+using Bit.Core.Repositories;
+
+namespace Bit.Core.Services;
+
+#nullable enable
+
+public class EventIntegrationHandler<T>(
+    IntegrationType integrationType,
+    IIntegrationPublisher integrationPublisher,
+    IOrganizationIntegrationConfigurationRepository configurationRepository,
+    IUserRepository userRepository,
+    IOrganizationRepository organizationRepository)
+    : IEventMessageHandler
+{
+    public async Task HandleEventAsync(EventMessage eventMessage)
+    {
+        if (eventMessage.OrganizationId is not Guid organizationId)
+        {
+            return;
+        }
+
+        var configurations = await configurationRepository.GetConfigurationDetailsAsync(
+            organizationId,
+            integrationType,
+            eventMessage.Type);
+
+        foreach (var configuration in configurations)
+        {
+            var template = configuration.Template ?? string.Empty;
+            var context = await BuildContextAsync(eventMessage, template);
+            var renderedTemplate = IntegrationTemplateProcessor.ReplaceTokens(template, context);
+
+            var config = configuration.MergedConfiguration.Deserialize<T>()
+                         ?? throw new InvalidOperationException($"Failed to deserialize to {typeof(T).Name}");
+
+            var message = new IntegrationMessage<T>
+            {
+                IntegrationType = integrationType,
+                Configuration = config,
+                RenderedTemplate = renderedTemplate,
+                RetryCount = 0,
+                DelayUntilDate = null
+            };
+
+            await integrationPublisher.PublishAsync(message);
+        }
+    }
+
+    public async Task HandleManyEventsAsync(IEnumerable<EventMessage> eventMessages)
+    {
+        foreach (var eventMessage in eventMessages)
+        {
+            await HandleEventAsync(eventMessage);
+        }
+    }
+
+    private async Task<IntegrationTemplateContext> BuildContextAsync(EventMessage eventMessage, string template)
+    {
+        var context = new IntegrationTemplateContext(eventMessage);
+
+        if (IntegrationTemplateProcessor.TemplateRequiresUser(template) && eventMessage.UserId.HasValue)
+        {
+            context.User = await userRepository.GetByIdAsync(eventMessage.UserId.Value);
+        }
+
+        if (IntegrationTemplateProcessor.TemplateRequiresActingUser(template) && eventMessage.ActingUserId.HasValue)
+        {
+            context.ActingUser = await userRepository.GetByIdAsync(eventMessage.ActingUserId.Value);
+        }
+
+        if (IntegrationTemplateProcessor.TemplateRequiresOrganization(template) && eventMessage.OrganizationId.HasValue)
+        {
+            context.Organization = await organizationRepository.GetByIdAsync(eventMessage.OrganizationId.Value);
+        }
+
+        return context;
+    }
+}

src/Core/AdminConsole/Services/Implementations/IntegrationEventHandlerBase.cs

@@ -1,8 +1,8 @@
 using System.Text.Json.Nodes;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.AdminConsole.Utilities;
 using Bit.Core.Enums;
 using Bit.Core.Models.Data;
-using Bit.Core.Models.Data.Integrations;
 using Bit.Core.Repositories;
 
 namespace Bit.Core.Services;

src/Core/AdminConsole/Services/Implementations/RabbitMqEventListenerService.cs

@@ -29,7 +29,7 @@ public class RabbitMqEventListenerService : EventLoggingListenerService
             UserName = globalSettings.EventLogging.RabbitMq.Username,
             Password = globalSettings.EventLogging.RabbitMq.Password
         };
-        _exchangeName = globalSettings.EventLogging.RabbitMq.ExchangeName;
+        _exchangeName = globalSettings.EventLogging.RabbitMq.EventExchangeName;
         _logger = logger;
         _queueName = queueName;
     }

src/Core/AdminConsole/Services/Implementations/RabbitMqEventWriteService.cs

@@ -18,7 +18,7 @@ public class RabbitMqEventWriteService : IEventWriteService, IAsyncDisposable
             UserName = globalSettings.EventLogging.RabbitMq.Username,
             Password = globalSettings.EventLogging.RabbitMq.Password
         };
-        _exchangeName = globalSettings.EventLogging.RabbitMq.ExchangeName;
+        _exchangeName = globalSettings.EventLogging.RabbitMq.EventExchangeName;
 
         _lazyConnection = new Lazy<Task<IConnection>>(CreateConnectionAsync);
     }

src/Core/AdminConsole/Services/Implementations/RabbitMqIntegrationListenerService.cs

@@ -0,0 +1,191 @@
+using System.Text;
+using Bit.Core.Settings;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using RabbitMQ.Client;
+using RabbitMQ.Client.Events;
+
+namespace Bit.Core.Services;
+
+public class RabbitMqIntegrationListenerService : BackgroundService
+{
+    private const string _deadLetterRoutingKey = "dead-letter";
+    private IChannel _channel;
+    private IConnection _connection;
+    private readonly string _exchangeName;
+    private readonly string _queueName;
+    private readonly string _retryQueueName;
+    private readonly string _deadLetterQueueName;
+    private readonly string _routingKey;
+    private readonly string _retryRoutingKey;
+    private readonly int _maxRetries;
+    private readonly IIntegrationHandler _handler;
+    private readonly ConnectionFactory _factory;
+    private readonly ILogger<RabbitMqIntegrationListenerService> _logger;
+    private readonly int _retryTiming;
+
+    public RabbitMqIntegrationListenerService(IIntegrationHandler handler,
+        string routingKey,
+        string queueName,
+        string retryQueueName,
+        string deadLetterQueueName,
+        GlobalSettings globalSettings,
+        ILogger<RabbitMqIntegrationListenerService> logger)
+    {
+        _handler = handler;
+        _routingKey = routingKey;
+        _retryRoutingKey = $"{_routingKey}-retry";
+        _queueName = queueName;
+        _retryQueueName = retryQueueName;
+        _deadLetterQueueName = deadLetterQueueName;
+        _logger = logger;
+        _exchangeName = globalSettings.EventLogging.RabbitMq.IntegrationExchangeName;
+        _maxRetries = globalSettings.EventLogging.RabbitMq.MaxRetries;
+        _retryTiming = globalSettings.EventLogging.RabbitMq.RetryTiming;
+
+        _factory = new ConnectionFactory
+        {
+            HostName = globalSettings.EventLogging.RabbitMq.HostName,
+            UserName = globalSettings.EventLogging.RabbitMq.Username,
+            Password = globalSettings.EventLogging.RabbitMq.Password
+        };
+    }
+
+    public override async Task StartAsync(CancellationToken cancellationToken)
+    {
+        _connection = await _factory.CreateConnectionAsync(cancellationToken);
+        _channel = await _connection.CreateChannelAsync(cancellationToken: cancellationToken);
+
+        await _channel.ExchangeDeclareAsync(exchange: _exchangeName,
+                                            type: ExchangeType.Direct,
+                                            durable: true,
+                                            cancellationToken: cancellationToken);
+
+        // Declare main queue
+        await _channel.QueueDeclareAsync(queue: _queueName,
+                                         durable: true,
+                                         exclusive: false,
+                                         autoDelete: false,
+                                         arguments: null,
+                                         cancellationToken: cancellationToken);
+        await _channel.QueueBindAsync(queue: _queueName,
+                                      exchange: _exchangeName,
+                                      routingKey: _routingKey,
+                                      cancellationToken: cancellationToken);
+
+        // Declare retry queue (Configurable TTL, dead-letters back to main queue)
+        await _channel.QueueDeclareAsync(queue: _retryQueueName,
+                                         durable: true,
+                                         exclusive: false,
+                                         autoDelete: false,
+                                         arguments: new Dictionary<string, object>
+                                         {
+                                             { "x-dead-letter-exchange", _exchangeName },
+                                             { "x-dead-letter-routing-key", _routingKey },
+                                             { "x-message-ttl", _retryTiming }
+                                         },
+                                         cancellationToken: cancellationToken);
+        await _channel.QueueBindAsync(queue: _retryQueueName,
+                                      exchange: _exchangeName,
+                                      routingKey: _retryRoutingKey,
+                                      cancellationToken: cancellationToken);
+
+        // Declare dead letter queue
+        await _channel.QueueDeclareAsync(queue: _deadLetterQueueName,
+                                         durable: true,
+                                         exclusive: false,
+                                         autoDelete: false,
+                                         arguments: null,
+                                         cancellationToken: cancellationToken);
+        await _channel.QueueBindAsync(queue: _deadLetterQueueName,
+                                      exchange: _exchangeName,
+                                      routingKey: _deadLetterRoutingKey,
+                                      cancellationToken: cancellationToken);
+
+        await base.StartAsync(cancellationToken);
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken cancellationToken)
+    {
+        var consumer = new AsyncEventingBasicConsumer(_channel);
+        consumer.ReceivedAsync += async (_, ea) =>
+        {
+            var json = Encoding.UTF8.GetString(ea.Body.Span);
+
+            try
+            {
+                var result = await _handler.HandleAsync(json);
+                var message = result.Message;
+
+                if (result.Success)
+                {
+                    // Successful integration send. Acknowledge message delivery and return
+                    await _channel.BasicAckAsync(ea.DeliveryTag, false, cancellationToken);
+                    return;
+                }
+
+                if (result.Retryable)
+                {
+                    // Integration failed, but is retryable - apply delay and check max retries
+                    message.ApplyRetry(result.DelayUntilDate);
+
+                    if (message.RetryCount < _maxRetries)
+                    {
+                        // Publish message to the retry queue. It will be re-published for retry after a delay
+                        await _channel.BasicPublishAsync(
+                            exchange: _exchangeName,
+                            routingKey: _retryRoutingKey,
+                            body: Encoding.UTF8.GetBytes(message.ToJson()),
+                            cancellationToken: cancellationToken);
+                    }
+                    else
+                    {
+                        // Exceeded the max number of retries; fail and send to dead letter queue
+                        await PublishToDeadLetterAsync(message.ToJson());
+                        _logger.LogWarning("Max retry attempts reached. Sent to DLQ.");
+                    }
+                }
+                else
+                {
+                    // Fatal error (i.e. not retryable) occurred. Send message to dead letter queue without any retries
+                    await PublishToDeadLetterAsync(message.ToJson());
+                    _logger.LogWarning("Non-retryable failure. Sent to DLQ.");
+                }
+
+                // Message has been sent to retry or dead letter queues.
+                // Acknowledge receipt so Rabbit knows it's been processed
+                await _channel.BasicAckAsync(ea.DeliveryTag, false, cancellationToken);
+            }
+            catch (Exception ex)
+            {
+                // Unknown error occurred. Acknowledge so Rabbit doesn't keep attempting. Log the error
+                _logger.LogError(ex, "Unhandled error processing integration message.");
+                await _channel.BasicAckAsync(ea.DeliveryTag, false, cancellationToken);
+            }
+        };
+
+        await _channel.BasicConsumeAsync(queue: _queueName, autoAck: false, consumer: consumer, cancellationToken: cancellationToken);
+    }
+
+    private async Task PublishToDeadLetterAsync(string json)
+    {
+        await _channel.BasicPublishAsync(
+            exchange: _exchangeName,
+            routingKey: _deadLetterRoutingKey,
+            body: Encoding.UTF8.GetBytes(json));
+    }
+
+    public override async Task StopAsync(CancellationToken cancellationToken)
+    {
+        await _channel.CloseAsync(cancellationToken);
+        await _connection.CloseAsync(cancellationToken);
+        await base.StopAsync(cancellationToken);
+    }
+
+    public override void Dispose()
+    {
+        _channel.Dispose();
+        _connection.Dispose();
+        base.Dispose();
+    }
+}

src/Core/AdminConsole/Services/Implementations/RabbitMqIntegrationPublisher.cs

@@ -0,0 +1,54 @@
+using System.Text;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+using Bit.Core.Enums;
+using Bit.Core.Settings;
+using RabbitMQ.Client;
+
+namespace Bit.Core.Services;
+
+public class RabbitMqIntegrationPublisher : IIntegrationPublisher, IAsyncDisposable
+{
+    private readonly ConnectionFactory _factory;
+    private readonly Lazy<Task<IConnection>> _lazyConnection;
+    private readonly string _exchangeName;
+
+    public RabbitMqIntegrationPublisher(GlobalSettings globalSettings)
+    {
+        _factory = new ConnectionFactory
+        {
+            HostName = globalSettings.EventLogging.RabbitMq.HostName,
+            UserName = globalSettings.EventLogging.RabbitMq.Username,
+            Password = globalSettings.EventLogging.RabbitMq.Password
+        };
+        _exchangeName = globalSettings.EventLogging.RabbitMq.IntegrationExchangeName;
+
+        _lazyConnection = new Lazy<Task<IConnection>>(CreateConnectionAsync);
+    }
+
+    public async Task PublishAsync(IIntegrationMessage message)
+    {
+        var routingKey = message.IntegrationType.ToRoutingKey();
+        var connection = await _lazyConnection.Value;
+        await using var channel = await connection.CreateChannelAsync();
+
+        await channel.ExchangeDeclareAsync(exchange: _exchangeName, type: ExchangeType.Direct, durable: true);
+
+        var body = Encoding.UTF8.GetBytes(message.ToJson());
+
+        await channel.BasicPublishAsync(exchange: _exchangeName, routingKey: routingKey, body: body);
+    }
+
+    public async ValueTask DisposeAsync()
+    {
+        if (_lazyConnection.IsValueCreated)
+        {
+            var connection = await _lazyConnection.Value;
+            await connection.DisposeAsync();
+        }
+    }
+
+    private async Task<IConnection> CreateConnectionAsync()
+    {
+        return await _factory.CreateConnectionAsync();
+    }
+}

src/Core/AdminConsole/Services/Implementations/SlackEventHandler.cs

@@ -1,7 +1,7 @@
 using System.Text.Json;
 using System.Text.Json.Nodes;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.Enums;
-using Bit.Core.Models.Data.Integrations;
 using Bit.Core.Repositories;
 
 #nullable enable

src/Core/AdminConsole/Services/Implementations/SlackIntegrationHandler.cs

@@ -0,0 +1,19 @@
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+
+namespace Bit.Core.Services;
+
+public class SlackIntegrationHandler(
+    ISlackService slackService)
+    : IntegrationHandlerBase<SlackIntegrationConfigurationDetails>
+{
+    public override async Task<IntegrationHandlerResult> HandleAsync(IntegrationMessage<SlackIntegrationConfigurationDetails> message)
+    {
+        await slackService.SendSlackMessageByChannelIdAsync(
+            message.Configuration.token,
+            message.RenderedTemplate,
+            message.Configuration.channelId
+        );
+
+        return new IntegrationHandlerResult(success: true, message: message);
+    }
+}

src/Core/AdminConsole/Services/Implementations/WebhookEventHandler.cs

@@ -1,8 +1,8 @@
 using System.Text;
 using System.Text.Json;
 using System.Text.Json.Nodes;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.Enums;
-using Bit.Core.Models.Data.Integrations;
 using Bit.Core.Repositories;
 
 #nullable enable
@@ -25,7 +25,7 @@ public class WebhookEventHandler(
     protected override async Task ProcessEventIntegrationAsync(JsonObject mergedConfiguration,
         string renderedTemplate)
     {
-        var config = mergedConfiguration.Deserialize<WebhookIntegrationConfigurationDetils>();
+        var config = mergedConfiguration.Deserialize<WebhookIntegrationConfigurationDetails>();
         if (config is null || string.IsNullOrEmpty(config.url))
         {
             return;

src/Core/AdminConsole/Services/Implementations/WebhookIntegrationHandler.cs

@@ -0,0 +1,61 @@
+using System.Globalization;
+using System.Net;
+using System.Text;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
+
+#nullable enable
+
+namespace Bit.Core.Services;
+
+public class WebhookIntegrationHandler(IHttpClientFactory httpClientFactory)
+    : IntegrationHandlerBase<WebhookIntegrationConfigurationDetails>
+{
+    private readonly HttpClient _httpClient = httpClientFactory.CreateClient(HttpClientName);
+
+    public const string HttpClientName = "WebhookIntegrationHandlerHttpClient";
+
+    public override async Task<IntegrationHandlerResult> HandleAsync(IntegrationMessage<WebhookIntegrationConfigurationDetails> message)
+    {
+        var content = new StringContent(message.RenderedTemplate, Encoding.UTF8, "application/json");
+        var response = await _httpClient.PostAsync(message.Configuration.url, content);
+        var result = new IntegrationHandlerResult(success: response.IsSuccessStatusCode, message);
+
+        switch (response.StatusCode)
+        {
+            case HttpStatusCode.TooManyRequests:
+            case HttpStatusCode.RequestTimeout:
+            case HttpStatusCode.InternalServerError:
+            case HttpStatusCode.BadGateway:
+            case HttpStatusCode.ServiceUnavailable:
+            case HttpStatusCode.GatewayTimeout:
+                result.Retryable = true;
+                result.FailureReason = response.ReasonPhrase;
+
+                if (response.Headers.TryGetValues("Retry-After", out var values))
+                {
+                    var value = values.FirstOrDefault();
+                    if (int.TryParse(value, out var seconds))
+                    {
+                        // Retry-after was specified in seconds. Adjust DelayUntilDate by the requested number of seconds.
+                        result.DelayUntilDate = DateTime.UtcNow.AddSeconds(seconds);
+                    }
+                    else if (DateTimeOffset.TryParseExact(value,
+                                 "r", // "r" is the round-trip format: RFC1123
+                                 CultureInfo.InvariantCulture,
+                                 DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal,
+                                 out var retryDate))
+                    {
+                        // Retry-after was specified as a date. Adjust DelayUntilDate to the specified date.
+                        result.DelayUntilDate = retryDate.UtcDateTime;
+                    }
+                }
+                break;
+            default:
+                result.Retryable = false;
+                result.FailureReason = response.ReasonPhrase;
+                break;
+        }
+
+        return result;
+    }
+}

src/Core/AdminConsole/Utilities/IntegrationTemplateProcessor.cs

@@ -1,4 +1,6 @@
-using System.Text.RegularExpressions;
+#nullable enable
+
+using System.Text.RegularExpressions;
 
 namespace Bit.Core.AdminConsole.Utilities;
 
@@ -9,7 +11,7 @@ public static partial class IntegrationTemplateProcessor
 
     public static string ReplaceTokens(string template, object values)
     {
-        if (string.IsNullOrEmpty(template) || values == null)
+        if (string.IsNullOrEmpty(template))
         {
             return template;
         }

src/Core/Settings/GlobalSettings.cs

@@ -312,11 +312,19 @@ public class GlobalSettings : IGlobalSettings
             private string _hostName;
             private string _username;
             private string _password;
-            private string _exchangeName;
+            private string _eventExchangeName;
+            private string _integrationExchangeName;
 
+            public int MaxRetries { get; set; } = 3;
+            public int RetryTiming { get; set; } = 30000; // 30s
             public virtual string EventRepositoryQueueName { get; set; } = "events-write-queue";
-            public virtual string WebhookQueueName { get; set; } = "events-webhook-queue";
-            public virtual string SlackQueueName { get; set; } = "events-slack-queue";
+            public virtual string IntegrationDeadLetterQueueName { get; set; } = "integration-dead-letter-queue";
+            public virtual string SlackEventsQueueName { get; set; } = "events-slack-queue";
+            public virtual string SlackIntegrationQueueName { get; set; } = "integration-slack-queue";
+            public virtual string SlackIntegrationRetryQueueName { get; set; } = "integration-slack-retry-queue";
+            public virtual string WebhookEventsQueueName { get; set; } = "events-webhook-queue";
+            public virtual string WebhookIntegrationQueueName { get; set; } = "integration-webhook-queue";
+            public virtual string WebhookIntegrationRetryQueueName { get; set; } = "integration-webhook-retry-queue";
 
             public string HostName
             {
@@ -333,10 +341,15 @@ public class GlobalSettings : IGlobalSettings
                 get => _password;
                 set => _password = value.Trim('"');
             }
-            public string ExchangeName
+            public string EventExchangeName
             {
-                get => _exchangeName;
-                set => _exchangeName = value.Trim('"');
+                get => _eventExchangeName;
+                set => _eventExchangeName = value.Trim('"');
+            }
+            public string IntegrationExchangeName
+            {
+                get => _integrationExchangeName;
+                set => _integrationExchangeName = value.Trim('"');
             }
         }
     }

src/Events/Startup.cs

@@ -1,6 +1,4 @@
 using System.Globalization;
-using Bit.Core.AdminConsole.Services.Implementations;
-using Bit.Core.AdminConsole.Services.NoopImplementations;
 using Bit.Core.Context;
 using Bit.Core.IdentityServer;
 using Bit.Core.Services;
@@ -63,37 +61,7 @@ public class Startup
             services.AddSingleton<IApplicationCacheService, InMemoryApplicationCacheService>();
         }
 
-        if (!globalSettings.SelfHosted && CoreHelpers.SettingHasValue(globalSettings.Events.ConnectionString))
-        {
-            services.AddKeyedSingleton<IEventWriteService, AzureQueueEventWriteService>("storage");
-
-            if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.ConnectionString) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.TopicName))
-            {
-                services.AddKeyedSingleton<IEventWriteService, AzureServiceBusEventWriteService>("broadcast");
-            }
-            else
-            {
-                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
-            }
-        }
-        else
-        {
-            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("storage");
-
-            if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.HostName) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Username) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Password) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.ExchangeName))
-            {
-                services.AddKeyedSingleton<IEventWriteService, RabbitMqEventWriteService>("broadcast");
-            }
-            else
-            {
-                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
-            }
-        }
-        services.AddScoped<IEventWriteService, EventRouteService>();
+        services.AddEventWriteServices(globalSettings);
         services.AddScoped<IEventService, EventService>();
 
         services.AddOptionality();
@@ -109,49 +77,7 @@ public class Startup
             services.AddHostedService<Core.HostedServices.ApplicationCacheHostedService>();
         }
 
-        // Optional RabbitMQ Listeners
-        if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.HostName) &&
-            CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Username) &&
-            CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Password) &&
-            CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.ExchangeName))
-        {
-            services.AddSingleton<EventRepositoryHandler>();
-            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("persistent");
-            services.AddSingleton<IHostedService>(provider =>
-                new RabbitMqEventListenerService(
-                    provider.GetRequiredService<EventRepositoryHandler>(),
-                    provider.GetRequiredService<ILogger<RabbitMqEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.RabbitMq.EventRepositoryQueueName));
-
-            if (CoreHelpers.SettingHasValue(globalSettings.Slack.ClientId) &&
-                CoreHelpers.SettingHasValue(globalSettings.Slack.ClientSecret) &&
-                CoreHelpers.SettingHasValue(globalSettings.Slack.Scopes))
-            {
-                services.AddHttpClient(SlackService.HttpClientName);
-                services.AddSingleton<ISlackService, SlackService>();
-            }
-            else
-            {
-                services.AddSingleton<ISlackService, NoopSlackService>();
-            }
-            services.AddSingleton<SlackEventHandler>();
-            services.AddSingleton<IHostedService>(provider =>
-                new RabbitMqEventListenerService(
-                    provider.GetRequiredService<SlackEventHandler>(),
-                    provider.GetRequiredService<ILogger<RabbitMqEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.RabbitMq.SlackQueueName));
-
-            services.AddHttpClient(WebhookEventHandler.HttpClientName);
-            services.AddSingleton<WebhookEventHandler>();
-            services.AddSingleton<IHostedService>(provider =>
-                new RabbitMqEventListenerService(
-                    provider.GetRequiredService<WebhookEventHandler>(),
-                    provider.GetRequiredService<ILogger<RabbitMqEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.RabbitMq.WebhookQueueName));
-        }
+        services.AddRabbitMqListeners(globalSettings);
     }
 
     public void Configure(

src/EventsProcessor/Startup.cs

@@ -1,12 +1,8 @@
 using System.Globalization;
-using Bit.Core.AdminConsole.Services.NoopImplementations;
-using Bit.Core.Repositories;
-using Bit.Core.Services;
 using Bit.Core.Settings;
 using Bit.Core.Utilities;
 using Bit.SharedWeb.Utilities;
 using Microsoft.IdentityModel.Logging;
-using TableStorageRepos = Bit.Core.Repositories.TableStorage;
 
 namespace Bit.EventsProcessor;
 
@@ -37,50 +33,7 @@ public class Startup
         services.AddDatabaseRepositories(globalSettings);
 
         // Hosted Services
-
-        // Optional Azure Service Bus Listeners
-        if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.ConnectionString) &&
-            CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.TopicName))
-        {
-            services.AddSingleton<IEventRepository, TableStorageRepos.EventRepository>();
-            services.AddSingleton<AzureTableStorageEventHandler>();
-            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("persistent");
-            services.AddSingleton<IHostedService>(provider =>
-                new AzureServiceBusEventListenerService(
-                    provider.GetRequiredService<AzureTableStorageEventHandler>(),
-                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.AzureServiceBus.EventRepositorySubscriptionName));
-
-            if (CoreHelpers.SettingHasValue(globalSettings.Slack.ClientId) &&
-                CoreHelpers.SettingHasValue(globalSettings.Slack.ClientSecret) &&
-                CoreHelpers.SettingHasValue(globalSettings.Slack.Scopes))
-            {
-                services.AddHttpClient(SlackService.HttpClientName);
-                services.AddSingleton<ISlackService, SlackService>();
-            }
-            else
-            {
-                services.AddSingleton<ISlackService, NoopSlackService>();
-            }
-            services.AddSingleton<SlackEventHandler>();
-            services.AddSingleton<IHostedService>(provider =>
-                new AzureServiceBusEventListenerService(
-                    provider.GetRequiredService<SlackEventHandler>(),
-                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.AzureServiceBus.SlackSubscriptionName));
-
-            services.AddSingleton<WebhookEventHandler>();
-            services.AddHttpClient(WebhookEventHandler.HttpClientName);
-
-            services.AddSingleton<IHostedService>(provider =>
-                new AzureServiceBusEventListenerService(
-                    provider.GetRequiredService<WebhookEventHandler>(),
-                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
-                    globalSettings,
-                    globalSettings.EventLogging.AzureServiceBus.WebhookSubscriptionName));
-        }
+        services.AddAzureServiceBusListeners(globalSettings);
         services.AddHostedService<AzureQueueHostedService>();
     }
 

src/SharedWeb/Utilities/ServiceCollectionExtensions.cs

@@ -5,6 +5,7 @@ using System.Security.Cryptography.X509Certificates;
 using AspNetCoreRateLimit;
 using Azure.Storage.Queues;
 using Bit.Core.AdminConsole.Models.Business.Tokenables;
+using Bit.Core.AdminConsole.Models.Data.Integrations;
 using Bit.Core.AdminConsole.OrganizationFeatures.Policies;
 using Bit.Core.AdminConsole.Services;
 using Bit.Core.AdminConsole.Services.Implementations;
@@ -324,42 +325,7 @@ public static class ServiceCollectionExtensions
             services.AddSingleton<IMailEnqueuingService, BlockingMailEnqueuingService>();
         }
 
-        if (!globalSettings.SelfHosted && CoreHelpers.SettingHasValue(globalSettings.Events.ConnectionString))
-        {
-            services.AddKeyedSingleton<IEventWriteService, AzureQueueEventWriteService>("storage");
-
-            if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.ConnectionString) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.TopicName))
-            {
-                services.AddKeyedSingleton<IEventWriteService, AzureServiceBusEventWriteService>("broadcast");
-            }
-            else
-            {
-                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
-            }
-        }
-        else if (globalSettings.SelfHosted)
-        {
-            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("storage");
-
-            if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.HostName) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Username) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.Password) &&
-                CoreHelpers.SettingHasValue(globalSettings.EventLogging.RabbitMq.ExchangeName))
-            {
-                services.AddKeyedSingleton<IEventWriteService, RabbitMqEventWriteService>("broadcast");
-            }
-            else
-            {
-                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
-            }
-        }
-        else
-        {
-            services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("storage");
-            services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
-        }
-        services.AddScoped<IEventWriteService, EventRouteService>();
+        services.AddEventWriteServices(globalSettings);
 
         if (CoreHelpers.SettingHasValue(globalSettings.Attachment.ConnectionString))
         {
@@ -584,6 +550,193 @@ public static class ServiceCollectionExtensions
         return globalSettings;
     }
 
+    public static IServiceCollection AddEventWriteServices(this IServiceCollection services, GlobalSettings globalSettings)
+    {
+        if (!globalSettings.SelfHosted && CoreHelpers.SettingHasValue(globalSettings.Events.ConnectionString))
+        {
+            services.AddKeyedSingleton<IEventWriteService, AzureQueueEventWriteService>("storage");
+
+            if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.ConnectionString) &&
+                CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.TopicName))
+            {
+                services.AddKeyedSingleton<IEventWriteService, AzureServiceBusEventWriteService>("broadcast");
+            }
+            else
+            {
+                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
+            }
+        }
+        else if (globalSettings.SelfHosted)
+        {
+            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("storage");
+
+            if (IsRabbitMqEnabled(globalSettings))
+            {
+                services.AddKeyedSingleton<IEventWriteService, RabbitMqEventWriteService>("broadcast");
+            }
+            else
+            {
+                services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
+            }
+        }
+        else
+        {
+            services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("storage");
+            services.AddKeyedSingleton<IEventWriteService, NoopEventWriteService>("broadcast");
+        }
+
+        services.AddScoped<IEventWriteService, EventRouteService>();
+        return services;
+    }
+
+    public static IServiceCollection AddAzureServiceBusListeners(this IServiceCollection services, GlobalSettings globalSettings)
+    {
+        if (CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.ConnectionString) &&
+            CoreHelpers.SettingHasValue(globalSettings.EventLogging.AzureServiceBus.TopicName))
+        {
+            services.AddSingleton<IEventRepository, TableStorageRepos.EventRepository>();
+            services.AddSingleton<AzureTableStorageEventHandler>();
+            services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("persistent");
+            services.AddSingleton<IHostedService>(provider =>
+                new AzureServiceBusEventListenerService(
+                    provider.GetRequiredService<AzureTableStorageEventHandler>(),
+                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
+                    globalSettings,
+                    globalSettings.EventLogging.AzureServiceBus.EventRepositorySubscriptionName));
+
+
+            services.AddSlackService(globalSettings);
+            services.AddSingleton<SlackEventHandler>();
+            services.AddSingleton<IHostedService>(provider =>
+                new AzureServiceBusEventListenerService(
+                    provider.GetRequiredService<SlackEventHandler>(),
+                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
+                    globalSettings,
+                    globalSettings.EventLogging.AzureServiceBus.SlackSubscriptionName));
+
+            services.AddSingleton<WebhookEventHandler>();
+            services.AddHttpClient(WebhookEventHandler.HttpClientName);
+            services.AddSingleton<IHostedService>(provider =>
+                new AzureServiceBusEventListenerService(
+                    provider.GetRequiredService<WebhookEventHandler>(),
+                    provider.GetRequiredService<ILogger<AzureServiceBusEventListenerService>>(),
+                    globalSettings,
+                    globalSettings.EventLogging.AzureServiceBus.WebhookSubscriptionName));
+        }
+
+        return services;
+    }
+
+    public static IServiceCollection AddRabbitMqListeners(this IServiceCollection services, GlobalSettings globalSettings)
+    {
+        if (IsRabbitMqEnabled(globalSettings))
+        {
+            services.AddRabbitMqEventRepositoryListener(globalSettings);
+
+            services.AddSlackService(globalSettings);
+            services.AddRabbitMqIntegration<SlackIntegrationConfigurationDetails, SlackIntegrationHandler>(
+                globalSettings.EventLogging.RabbitMq.SlackEventsQueueName,
+                globalSettings.EventLogging.RabbitMq.SlackIntegrationQueueName,
+                globalSettings.EventLogging.RabbitMq.SlackIntegrationRetryQueueName,
+                globalSettings.EventLogging.RabbitMq.IntegrationDeadLetterQueueName,
+                IntegrationType.Slack,
+                globalSettings);
+
+            services.AddHttpClient(WebhookIntegrationHandler.HttpClientName);
+            services.AddRabbitMqIntegration<WebhookIntegrationConfigurationDetails, WebhookIntegrationHandler>(
+                globalSettings.EventLogging.RabbitMq.WebhookEventsQueueName,
+                globalSettings.EventLogging.RabbitMq.WebhookIntegrationQueueName,
+                globalSettings.EventLogging.RabbitMq.WebhookIntegrationRetryQueueName,
+                globalSettings.EventLogging.RabbitMq.IntegrationDeadLetterQueueName,
+                IntegrationType.Webhook,
+                globalSettings);
+        }
+
+        return services;
+    }
+
+    public static IServiceCollection AddSlackService(this IServiceCollection services, GlobalSettings globalSettings)
+    {
+        if (CoreHelpers.SettingHasValue(globalSettings.Slack.ClientId) &&
+            CoreHelpers.SettingHasValue(globalSettings.Slack.ClientSecret) &&
+            CoreHelpers.SettingHasValue(globalSettings.Slack.Scopes))
+        {
+            services.AddHttpClient(SlackService.HttpClientName);
+            services.AddSingleton<ISlackService, SlackService>();
+        }
+        else
+        {
+            services.AddSingleton<ISlackService, NoopSlackService>();
+        }
+
+        return services;
+    }
+
+    private static IServiceCollection AddRabbitMqEventRepositoryListener(this IServiceCollection services, GlobalSettings globalSettings)
+    {
+        services.AddSingleton<EventRepositoryHandler>();
+        services.AddKeyedSingleton<IEventWriteService, RepositoryEventWriteService>("persistent");
+
+        services.AddSingleton<IHostedService>(provider =>
+            new RabbitMqEventListenerService(
+                provider.GetRequiredService<EventRepositoryHandler>(),
+                provider.GetRequiredService<ILogger<RabbitMqEventListenerService>>(),
+                globalSettings,
+                globalSettings.EventLogging.RabbitMq.EventRepositoryQueueName));
+
+        return services;
+    }
+
+    private static IServiceCollection AddRabbitMqIntegration<TConfig, THandler>(this IServiceCollection services,
+        string eventQueueName,
+        string integrationQueueName,
+        string integrationRetryQueueName,
+        string integrationDeadLetterQueueName,
+        IntegrationType integrationType,
+        GlobalSettings globalSettings)
+        where TConfig : class
+        where THandler : class, IIntegrationHandler<TConfig>
+    {
+        var routingKey = integrationType.ToRoutingKey();
+
+        services.AddSingleton<IIntegrationPublisher, RabbitMqIntegrationPublisher>();
+        services.AddKeyedSingleton<IEventMessageHandler>(routingKey, (provider, _) =>
+            new EventIntegrationHandler<TConfig>(
+                integrationType,
+                provider.GetRequiredService<IIntegrationPublisher>(),
+                provider.GetRequiredService<IOrganizationIntegrationConfigurationRepository>(),
+                provider.GetRequiredService<IUserRepository>(),
+                provider.GetRequiredService<IOrganizationRepository>()));
+
+        services.AddSingleton<IHostedService>(provider =>
+            new RabbitMqEventListenerService(
+                provider.GetRequiredKeyedService<IEventMessageHandler>(routingKey),
+                provider.GetRequiredService<ILogger<RabbitMqEventListenerService>>(),
+                globalSettings,
+                eventQueueName));
+
+        services.AddSingleton<IIntegrationHandler<TConfig>, THandler>();
+        services.AddSingleton<IHostedService>(provider =>
+            new RabbitMqIntegrationListenerService(
+                handler: provider.GetRequiredService<IIntegrationHandler<TConfig>>(),
+                routingKey: routingKey,
+                queueName: integrationQueueName,
+                retryQueueName: integrationRetryQueueName,
+                deadLetterQueueName: integrationDeadLetterQueueName,
+                globalSettings: globalSettings,
+                logger: provider.GetRequiredService<ILogger<RabbitMqIntegrationListenerService>>()));
+
+        return services;
+    }
+
+    private static bool IsRabbitMqEnabled(GlobalSettings settings)
+    {
+        return CoreHelpers.SettingHasValue(settings.EventLogging.RabbitMq.HostName) &&
+               CoreHelpers.SettingHasValue(settings.EventLogging.RabbitMq.Username) &&
+               CoreHelpers.SettingHasValue(settings.EventLogging.RabbitMq.Password) &&
+               CoreHelpers.SettingHasValue(settings.EventLogging.RabbitMq.EventExchangeName);
+    }
+
     public static void UseDefaultMiddleware(this IApplicationBuilder app,
         IWebHostEnvironment env, GlobalSettings globalSettings)
     {