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How to: Resolve a Service Endpoint Using a UDDI Category Search

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Goal

This section demonstrates how to use the ESB Designer domain-specific language (DSL) to create an itinerary-based routing slip that uses the Universal Description, Discovery, and Integration (UDDI) 3 resolver to locate a service endpoint using a category search. In this scenario, the service endpoint will be a file endpoint published in UDDI.

In this How-to topic, you will complete the following steps:

  • Create an itinerary routing slip to resolve a service endpoint.

  • Configure the itinerary to route the message to a service endpoint using a UDDI 3 resolver.

  • Test the itinerary using the Itinerary Test Client sample application.

Prerequisites

The procedures in this How-to topic require the completion of the Prerequisites for the Development Activities.

Steps

To create an itinerary model

  1. In Visual Studio, open C:\HowTos\Patterns\Patterns.sln.

  2. In Solution Explorer, right-click the ItineraryLibrary project, point to Add, and then click New Itinerary.

  3. In the Add New Item dialog box, type UDDI3CategorySearch in the Name box, and then click Add.

To configure the properties of the itinerary

  1. In Visual Studio, click the design surface of UDDI3CategorySearch.itinerary. In the UDDI3CategorySearch Properties window, configure the following properties:

    1. In the Model Exporter drop-down list, click XML Itinerary Exporter.

    2. Under the Extender Settings section, next to the Itinerary XML file property, click the ellipsis button (...).

    3. In the Select XML File dialog box, type C:\HowTos\Itineraries\UDDI3CategorySearch in the File name box, and then click Save.

      Note

      This step enables you to export the itinerary as XML to a local file location. By exporting an itinerary to a local file location, instead of to the itinerary database, enables testing of the itinerary using the ESB Test Client application. You will complete this process later in this How-to topic.

To define the structure of the itinerary

  1. From the Toolbox, drag an On-Ramp model element to the design surface. In the OnRamp1 Properties window, configure the following properties:

    1. Click the Name property, and then type ReceiveNAOrder.

    2. In the Extender drop-down list, click On-Ramp ESB Extender.

    3. In the BizTalk Application drop-down list, click Microsoft.Practices.ESB.

    4. In the Receive Port drop-down list, click OnRamp.Itinerary.

  2. From the Toolbox, drag an Itinerary Service model element to the design surface. In the ItineraryService1 Properties window, configure the following properties:

    1. Click the Name property, and then type CategoryRoute.

    2. In the Itinerary Service Extender drop-down list, click Messaging Extender.

    3. In the Container drop-down list, expand ReceiveNAOrder, and then click Receive Handlers.

    4. In the Service Name drop-down list, click Microsoft.Practices.ESB.Services.Routing

  3. Right-click the Resolver collection of the CategoryRoute model element, and then click Add new Resolver. In the Resolver1 Properties window, configure the following properties:

    1. Click the Name property, and then type CategorySearch.

    2. In the Resolver Implementation drop-down list, click Uddi3 Resolver Extension.

    3. In the Resolver Moniker drop-down list, click UDDI3.

    4. Click the Category Search property, and then click the ellipsis button (…).

    5. In the Name Value Property Editor dialog box, click Add.

    6. Click the Name property, and then type uddi:esb:biztalkapplication.

    7. Click the Value property, and then type GlobalBank.ESB.

    8. In the Name Value Property Editor dialog box, click Add.

    9. Click the Name property, and then type uddi:esb:portname.

    10. Click the Value property, and then type OrderFileServicev3.

    11. In the Name Value Property Editor dialog box, click Add.

    12. Click the Name property, and then type uddi:esb:version.

    13. Click the Value property, and then type 1.

    14. Click OK to close the Name Value Property Editor dialog box.

  4. Right-click the CategorySearch resolver, and then click Test Resolver Configuration.

    Note

    Verify the output displayed in the Output window.

  5. In the Toolbox, click Connector. Drag a connection from the ReceiveNAOrder model element to the CategoryRoute model element.

  6. From the Toolbox, drag an Off-Ramp model element to the design surface, and then place it to the right of the CategoryRoute model element. In the OffRamp1 Properties window, configure the following properties:

    1. Click the Name property, and then type SendNAOrder.

    2. In the Extender drop-down list, click Off-Ramp ESB Extender.

    3. In the BizTalk Application drop-down list, click GlobalBank.ESB.

    4. In the Send Port drop-down list, click DynamicResolutionOneWay.

  7. From the Toolbox, drag an Itinerary Service model element to the design surface, and then place it between the CategoryRoute model element and the SendNAOrder model element. In the ItineraryService1 Properties window, configure the following properties:

    1. Click the Name property, and then type SendPortFilter.

    2. In the Itinerary Service Extender drop-down list, click Off-Ramp Extender.

    3. In the Off-Ramp drop-down list, expand SendNAOrder, and then click Send Handlers.

  8. In the Toolbox, click Connector. Drag a connection from the CategoryRoute model element to the SendPortFilter model element.

  9. In the Toolbox, click Connector. Drag a connection from the SendPortFilter model element to the SendNAOrder model element.

To export the model for use with the Itinerary Test Client

  1. In Visual Studio, right-click the design surface of the UDDI3CategorySearch itinerary, and then click Export Model.

    Note

    The XML version of the itinerary opens in Visual Studio.

  2. Save all project artifacts.

  3. In Windows Explorer, browse to C:\HowTos\Itineraries and notice the creation of your itinerary XML (UDDI3CategorySearch.xml).

To test the itinerary

  1. Open the Itinerary Test Client sample application using the shortcut created during the Prerequisites for the Development Activities (C:\HowTos\ESB.Itinerary.Test.exe - Shortcut).

  2. In the Itinerary Test Client, clear the Use WCF Service check box, and then click Load Itinerary.

  3. In the Open Itinerary File dialog box, browse to C:\HowTos\Itineraries. Select UDDI3CategorySearch.xml, and then click Open to load the itinerary.

  4. Click OK to clear the Itinerary Loaded Successfully message.

  5. In the Itinerary Test Client, click the ellipsis button (...) next to the Load Message box.

  6. In the Select XML Document to load dialog box, browse to C:\HowTos. Select NAOrderDoc.xml, and then click Open to load the test message.

  7. Click the Submit Request button. When the test completes, click OK to dismiss the confirmation that appears.

  8. In Windows Explorer, browse to C:\Projects\Microsoft.Practices.ESB\Source\Samples\DynamicResolution\Test\Filedrop\Out and verify that the %MessageID%.xml message has been written to the directory.

Additional Resources

For more information, see the following related topics: