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Switching from JMS to HTTP(S)¶

This example demonstrates how the Micro Integrator receives a messages over the JMS transport and forwards it over an HTTP/S transport. In this sample, the client sends a request message to the proxy service exposed in JMS. The Micro Integrator forwards this message to the HTTP endpoint and returns the reply back to the client through a JMS temporary queue.

Synapse configuration¶

Following are the integration artifacts (proxy service) that we can used to implement this scenario. See the instructions on how to build and run this example.

<proxy xmlns="http://ws.apache.org/ns/synapse" name="JMStoHTTPStockQuoteProxy" transports="jms">
      <target>
          <inSequence>
              <property action="set" name="OUT_ONLY" value="true"/>
              <send>
                  <endpoint>
                      <address uri="http://localhost:9000/services/SimpleStockQuoteService"/>
                  </endpoint>
              </send>
          </inSequence>
      </target>
      <parameter name="transport.jms.ContentType">
          <rules>
              <jmsProperty>contentType</jmsProperty>
              <default>text/xml</default>
          </rules>
      </parameter>
      <parameter name="transport.jms.Destination">Queue1</parameter>
      <parameter name="transport.jms.ConnectionFactory">myQueueListener</parameter>
  </proxy>

Build and Run¶

Create the artifacts:

Set up ESB Integration Studio.
Create an integration project with an ESB Configs module and an Composite Exporter.
Create the proxy service with the configurations given above.
Deploy the artifacts in your Micro Integrator.
Start the selected message broker and create a queue with name Queue1.
Configure MI with the selected message broker and start the Micro-Integrator.

Set up the back-end service:

Download the back-end service
Extract the downloaded zip file.
Open a terminal, navigate to the axis2Server/bin/ directory inside the extracted folder.
Execute the following command to start the axis2server with the SimpleStockQuote back-end service:
On MacOS/Linux/CentOS
```
sh axis2server.sh
```
On Windows
```
axis2server.bat
```

Publish the following XML message to the Queue1.

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soapenv:Header/>
   <soapenv:Body>
    <m0:placeOrder xmlns:m0="http://services.samples">
        <m0:order>
            <m0:price>172.23182849731984</m0:price>
            <m0:quantity>18398</m0:quantity>
            <m0:symbol>IBM</m0:symbol>
        </m0:order>
    </m0:placeOrder>
   </soapenv:Body>
</soapenv:Envelope>

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