Sample: One-way listener

Article
11/28/2016

Applies To: Dynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016, Dynamics CRM Online

This sample listener application registers a remote service plug-in that executes whenever a Microsoft Dynamics 365 message is posted to a one-way endpoint on the Microsoft Azure Service Bus. When the plug-in executes, it outputs to the console the contents of the Microsoft Dynamics 365 execution context contained in the message.

Requirements

This sample code is for Microsoft Dynamics 365 and Microsoft Dynamics 365 (online). Download the Microsoft Dynamics CRM SDK package.This code can be found in the following location in the download package:

SDK\SampleCode\CS\Azure\OneWayListener\OneWayListener.cs

Demonstrates

This sample shows how to write a Microsoft Azure Service Bus listener for a one-way endpoint contract.

Example


using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Text;

using Microsoft.Xrm.Sdk;
using Microsoft.ServiceBus;

namespace Microsoft.Crm.Sdk.Samples
{
    [ServiceBehavior]
    class RemoteService : IServiceEndpointPlugin
    {
        #region IServiceEndpointPlugin Member

        public void Execute(RemoteExecutionContext context)
        {
            Utility.Print(context);
        }

        #endregion
    }

    class Program
    {
        static void Main(string[] args)
        {
            ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.Http;

            Console.Write("Your Service Namespace: ");
            string serviceNamespace = Console.ReadLine();
            Console.Write("Your Issuer Name: ");
            string issuerName = Console.ReadLine();

            // The issuer secret is the Service Bus namespace management key.
            Console.Write("Your Issuer Secret: ");
            string issuerSecret = Console.ReadLine();

            // Create the service URI based on the service namespace.
            Uri address = ServiceBusEnvironment.CreateServiceUri(Uri.UriSchemeHttps, serviceNamespace, "RemoteService");
            Console.WriteLine("Service address: " + address);

            // Create the credentials object for the endpoint.
            TransportClientEndpointBehavior sharedSecretServiceBusCredential = new TransportClientEndpointBehavior() 
            {
                TokenProvider = TokenProvider.CreateSharedSecretTokenProvider(issuerName, issuerSecret)
            };

            // Create the binding object.
            WS2007HttpRelayBinding binding = new WS2007HttpRelayBinding();
            binding.Security.Mode = EndToEndSecurityMode.Transport;

            // Create the service host reading the configuration.
            ServiceHost host = new ServiceHost(typeof(RemoteService));
            host.AddServiceEndpoint(typeof(IServiceEndpointPlugin), binding, address);

            // Create the ServiceRegistrySettings behavior for the endpoint.
            IEndpointBehavior serviceRegistrySettings = new ServiceRegistrySettings(DiscoveryType.Public);

            // Add the Service Bus credentials to all endpoints specified in configuration.
            foreach (ServiceEndpoint endpoint in host.Description.Endpoints)
            {
                endpoint.Behaviors.Add(serviceRegistrySettings);
                endpoint.Behaviors.Add(sharedSecretServiceBusCredential);
            }

            // Open the service.
            host.Open();

            Console.WriteLine("Press [Enter] to exit");
            Console.ReadLine();

            // Close the service.
            Console.Write("Closing the service host...");
            host.Close();
            Console.WriteLine(" done.");
        }
    }

    internal static class Utility
    {
        public static void Print(RemoteExecutionContext context)
        {
            Console.WriteLine("----------");
            if (context == null)
            {
                Console.WriteLine("Context is null.");
                return;
            }

            Console.WriteLine("UserId: {0}", context.UserId);
            Console.WriteLine("OrganizationId: {0}", context.OrganizationId);
            Console.WriteLine("OrganizationName: {0}", context.OrganizationName);
            Console.WriteLine("MessageName: {0}", context.MessageName);
            Console.WriteLine("Stage: {0}", context.Stage);
            Console.WriteLine("Mode: {0}", context.Mode);
            Console.WriteLine("PrimaryEntityName: {0}", context.PrimaryEntityName);
            Console.WriteLine("SecondaryEntityName: {0}", context.SecondaryEntityName);

            Console.WriteLine("BusinessUnitId: {0}", context.BusinessUnitId);
            Console.WriteLine("CorrelationId: {0}", context.CorrelationId);
            Console.WriteLine("Depth: {0}", context.Depth);
            Console.WriteLine("InitiatingUserId: {0}", context.InitiatingUserId);
            Console.WriteLine("IsExecutingOffline: {0}", context.IsExecutingOffline);
            Console.WriteLine("IsInTransaction: {0}", context.IsInTransaction);
            Console.WriteLine("IsolationMode: {0}", context.IsolationMode);
            Console.WriteLine("Mode: {0}", context.Mode);
            Console.WriteLine("OperationCreatedOn: {0}", context.OperationCreatedOn.ToString());
            Console.WriteLine("OperationId: {0}", context.OperationId);
            Console.WriteLine("PrimaryEntityId: {0}", context.PrimaryEntityId);
            Console.WriteLine("OwningExtension LogicalName: {0}", context.OwningExtension.LogicalName);
            Console.WriteLine("OwningExtension Name: {0}", context.OwningExtension.Name);
            Console.WriteLine("OwningExtension Id: {0}", context.OwningExtension.Id);
            Console.WriteLine("SharedVariables: {0}", (context.SharedVariables == null ? "NULL" :
                SerializeParameterCollection(context.SharedVariables)));
            Console.WriteLine("InputParameters: {0}", (context.InputParameters == null ? "NULL" :
                SerializeParameterCollection(context.InputParameters)));
            Console.WriteLine("OutputParameters: {0}", (context.OutputParameters == null ? "NULL" :
                SerializeParameterCollection(context.OutputParameters)));
            Console.WriteLine("PreEntityImages: {0}", (context.PreEntityImages == null ? "NULL" :
                SerializeEntityImageCollection(context.PreEntityImages)));
            Console.WriteLine("PostEntityImages: {0}", (context.PostEntityImages == null ? "NULL" :
                SerializeEntityImageCollection(context.PostEntityImages)));
            Console.WriteLine("----------");
        }

        #region Private methods.
        private static string SerializeEntity(Entity e)
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(Environment.NewLine);
            sb.Append(" LogicalName: " + e.LogicalName);
            sb.Append(Environment.NewLine);
            sb.Append(" EntityId: " + e.Id);
            sb.Append(Environment.NewLine);
            sb.Append(" Attributes: [");
            foreach (KeyValuePair<string, object> parameter in e.Attributes)
            {
                sb.Append(parameter.Key + ": " + parameter.Value + "; ");
            }
            sb.Append("]");
            return sb.ToString();
        }

        private static string SerializeParameterCollection(ParameterCollection parameterCollection)
        {
            StringBuilder sb = new StringBuilder();
            foreach (KeyValuePair<string, object> parameter in parameterCollection)
            {
                if (parameter.Value != null &amp;&amp; parameter.Value.GetType() == typeof(Entity))
                {
                    Entity e = (Entity)parameter.Value;
                    sb.Append(parameter.Key + ": " + SerializeEntity(e));
                }
                else
                {
                    sb.Append(parameter.Key + ": " + parameter.Value + "; ");
                }
            }
            return sb.ToString();
        }

        private static string SerializeEntityImageCollection(EntityImageCollection entityImageCollection)
        {
            StringBuilder sb = new StringBuilder();
            foreach (KeyValuePair<string, Entity> entityImage in entityImageCollection)
            {
                sb.Append(Environment.NewLine);
                sb.Append(entityImage.Key + ": " + SerializeEntity(entityImage.Value));
            }
            return sb.ToString();
        }
        #endregion
    }
}

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Sample: One-way listener

Requirements

Demonstrates

Example

See Also

Additional resources