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In this sample scenario, you will use a Sequence Template and reuse it in multiple places of the medation flow. You can reuse the mediation flow that was defined in the /wiki/spaces/EI6xx/pages/49614279 tutorial and Sending a Simple Message to a Service tutorial and then replace its sections with the sequence template. See Creating Templates for details on how to work with templates using WSO2 Integration Studio.


Tip

Before you begin,

  1. Install Oracle Java SE Development Kit (JDK) version 1.8.* and set the JAVA_HOME environment variable.
  2. Download the product installer from installer from here, and run the installer.
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    Installing the Product
    Installing the Product
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  3. Select and download the relevant WSO2 Integration Studio ZIP file based on your operating system from here and then extract the ZIP file.
    The path to this folder will be referred to as <EI_TOOLING> throughout this tutorial.

    Note

    Getting an error message? See the troubleshooting tips given under /wiki/spaces/EI6xx/pages/49612293 Installing WSO2 Integration Studio.

  4. If you did not try the /wiki/spaces/EI6xx/pages/49614337 tutorial yetSending a Simple Message to a Service tutorial yet, open the WSO2 Integration Studio, click File, and then click Import. Next, select Existing WSO2 Projects into workspace under the WSO2 category, click Next and upload the pre-packaged project. This contains the configurations of the /wiki/spaces/EI6xx/pages/49614337 tutorial so Sending a Simple Message to a Service tutorial so that you do not have to repeat those steps.
  5. Download the MSF4J service from here and copy the JAR file to <EI_HOME>/wso2/msf4j/deployment/microservices folder. The back-end service is now deployed in the MSF4J profile of WSO2 EI.

Let's get started!
Table of Contents

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  1. Open the pom.xml file under the SampleServicesCompositeApplication project from the project explorer. 

  2. See that the newly added 'HospitalRoutingSeq' artifact is listed under Dependencies. Select this artifact to add it to the composite application project.

    Screen Shot 2016-10-14 at 10.38.42 AM.png

  3. Save your changes.

  4. Open the Getting Started view and click Miscellaneous →Add New Server to open the New Server dialog. 

  5. In the New Server dialog, expand the WSO2 folder and select the version of your server.
  6. Click Next. In the CARBON_HOME field, provide the path to your product's home directory, and then click Next again.

  7. Review the default port details for your server and click Next.

  8. To deploy the CApp project to your server, select the SampleServicesCompositeApplication project from the list, click Add to move it into the configured list, and then click Finish.

  9. On the Servers tab, note that the server is currently stopped. Click the 'play' icon on the tool bar. If prompted to save changes to any of the artifact files you created earlier, click Yes. 

  10. As the server starts, the Console tab appears. Note messages indicating that the composite app was successfully deployed.

Starting the back-end service

Download and start the back-end service:

  1. Download the JAR file of the back-end service.

  2. Open a terminal and navigate to the location where your saved the back-end service.

  3. Execute the following command to start the service:

    Code Block
    java -jar Hospital-Service-JDK11-2.0.0.jar

The Healthcare service is now active and you can start sending requests to the service.

Invoking the ESB sequence

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