Switch from FIX to HTTP

This example demonstrates how WSO2 Micro Integrator receives messages through FIX and forwards them through HTTP.

The Micro Integrator will forward the order request to a one-way placeOrder operation in the back-end service. Micro Integrator uses a simple XSLT Mediator to transform the incoming FIX to a SOAP message.

Synapse configuration

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

Proxy ServiceEndpointFIX_XSLT

<?xml version="1.0" encoding="UTF-8"?>
<proxy name="FIXToHTTPProxy" startOnLoad="true" transports="fix" xmlns="http://ws.apache.org/ns/synapse">
    <target>
        <inSequence>
            <log category="INFO" level="full"/>
            <xslt key="{reg_path}/FIX_XSLT.xslt">
            </xslt>
            <log category="INFO" level="full"/>
            <header name="Action" action="set" scope="default" value="urn:placeOrder"/>
            <call>
                <endpoint key="SimpleStockQuoteServiceEp"/>
            </call>
            <log category="INFO" level="full"/>
        </inSequence>
        <faultSequence/>
    </target>
    <parameter name="transport.fix.AcceptorConfigURL">file:/{file_path}/fix-synapse.cfg</parameter>
    <parameter name="transport.fix.AcceptorMessageStore">file</parameter>
</proxy>

<?xml version="1.0" encoding="UTF-8"?>
<endpoint name="SimpleStockQuoteServiceEp" xmlns="http://ws.apache.org/ns/synapse">
    <address uri="http://localhost:9000/services/SimpleStockQuoteService">
        <suspendOnFailure>
            <initialDuration>-1</initialDuration>
            <progressionFactor>1</progressionFactor>
        </suspendOnFailure>
        <markForSuspension>
            <retriesBeforeSuspension>0</retriesBeforeSuspension>
        </markForSuspension>
    </address>
</endpoint>

<xsl:stylesheet version="2.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:fn="http://www.w3.org/2005/02/xpath-functions">
    <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
    <xsl:template match="/">
        <m0:placeOrder xmlns:m0="http://services.samples">
            <m0:order>
                <m0:price>
                    <xsl:value-of select="//message/body/field[@id='44']"/>
                </m0:price>
                <m0:quantity>
                    <xsl:value-of select="//message/body/field[@id='38']"/>
                </m0:quantity>
                <m0:symbol>
                    <xsl:value-of select="//message/body/field[@id='55']"/>
                </m0:symbol>
            </m0:order>
        </m0:placeOrder>
    </xsl:template>
</xsl:stylesheet>

Build and run

Create the artifacts:

1. Launch Visual Studio Code with the Micro Integrator for VS Code extension (MI for VS Code) installed.

   Info

   Follow the Install Micro Integrator for VS Code documentation for a complete installation guide.

2. Create an integration project.

3. Add the above XSLT as a registry resource. Refer Creating a Registry Resource guide for further information.
4. Create the proxy service with the configurations given above.
5. Download the FIX transport resources from here and change the {file_path} of the proxy with the downloaded location.
6. Change the {reg_path} with the XSLT registry location.
7. Deploy the artifacts in your Micro Integrator.

Enable the FIX transport and start the Micro-Integrator.

Set up the back-end service:

1. Download the back-end service.
2. Extract the downloaded zip file.
3. Open a terminal, navigate to the axis2Server/bin/ directory inside the extracted folder.

4. Execute the following command to start the axis2server with the SimpleStockQuote back-end service:

   On MacOS/Linux/CentOSOn Windows

   sh axis2server.sh
   

   axis2server.bat
   

Run the quickfixj Banzai sample application.

java -jar quickfixj-examples-banzai-2.3.1.jar

Testing

Send an order request from Banzai to Synapse. For example, Buy 1000 DELL @ $100. User has to send a "Limit" Order because price is a mandatory field for placeOrder operation.

We can see the transformed SOAP message logged as follows.

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    <soapenv:Body>
        <m0:placeOrder xmlns:m0="http://services.samples" xmlns:fn="http://www.w3.org/2005/02/xpath-functions">
            <m0:order>
                <m0:price>100</m0:price>
                <m0:quantity>1000</m0:quantity>
                <m0:symbol>DELL</m0:symbol>
            </m0:order>
        </m0:placeOrder>
    </soapenv:Body>
</soapenv:Envelope>

In the axis2server, the accepted order will be as follows:

Tue Jul 16 10:20:23 IST 2024 samples.services.SimpleStockQuoteService  :: Accepted order #1 for : 1000 stocks of DELL at $ 100.0