Hi,

I am trying to use the XSLT node in the policy to inject a block of XML to the request XML payload. However, there is a requirement to use a variable to for the value as the value can change from environment to environment.

I tried the following XSLT I found to try to get the value from catalog variables, but the xsl:variable block select attribute doesn't work, so I am not sure I'll need to use some specific function or it is just some syntax error. 

Thanks in advance.

XSLT:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:com="http://pb.com/EngageOne/ws/common" xmlns:dp="http://www.datapower.com/extensions" xmlns:func="http://exslt.org/functions" xmlns:apim="http://www.ibm.com/xmlns/datapower/2017/11/apigateway" extension-element-prefixes="dp func apim">
    <!-- Contains the APIM functions -->
    <xsl:import href="local:///isp/policy/apim.custom.xsl"/>
    <xsl:output method="xml" indent="yes"/>
    <!-- identity transform -->
    <xsl:template match="*|@*|text()">
        <xsl:copy>
            <xsl:apply-templates select="*|@*|text()"/>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="/*[local-name()='Envelope']/*[local-name()='Body']/*[local-name()='SearchDeliveryOptions']">
        <xsl:variable name="apic-id" select="apim:getContext('catalog.apic-id')"/>
        <xsl:copy>
            <com:authContext>
                <com:UsernameToken>
                    <com:domain>
                        <com:ident>
                            <com:name>some value</com:name>
                        </com:ident>
                    </com:domain>
                    <com:userId>
                        <xsl:value-of select="$apic-id"/>
                    </com:userId>
                    <com:password>some value</com:password>
                    <com:transientSession>false</com:transientSession>
                </com:UsernameToken>
            </com:authContext>
            <xsl:apply-templates select="*|@*|text()"/>
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

XML request:
<?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:del="http://pb.com/EngageOne/ws/deliveryManagement" xmlns:com="http://pb.com/EngageOne/ws/common">
    <soapenv:Header/>
    <soapenv:Body>
        <del:SearchDeliveryOptions>
            <!-- block to be injected -->
            <com:community>some value</com:community>
            <com:filter>some value</com:filter>
            <templates>
                <template>
                    <ident>
                        <com:name>some value</com:name>
                    </ident>
                </template>
            </templates>
        </del:SearchDeliveryOptions>
    </soapenv:Body>
</soapenv:Envelope>

------------------------------
Kenny Kew
------------------------------

Hi Kenny,
A couple questions, first since you're using <xsl:import href="local:///isp/policy/apim.custom.xsl"/>, can I assume that you're using the v5 compatible gateway?  If not and using the native/API Gateway and still wish to use the apim namespaced extension function, you'll need to import store:///dp/apim.custom.xsl.  Also, can I assume that the variable you're trying to get with apim:getContext('catalog.apic-id'), ie catalog.apic-id, is a variable that was set in a prior policy in the assembly? Or perhaps this is an API property that has a catalog specific value? Or is this truly a catalog property?  If an API property with a catalog specific value it should be setup properly on publish to your specific catalog and you'd just need to get  either apic-id or api.properties.apic-id.  If this is a catalog specific property, then that is only available during publish and not at runtime, but what you can do is use a set variable policy that sets your own apic-id variable to a value of $(apic-id) and the API Manager will do the substitution at publish time in the set variable policy.

Best Regards,
Steve Linn

------------------------------
Steve Linn
Senior Consulting I/T Specialist
IBM
------------------------------