CXFNonSpringServlet in camel-cxf - apache-camel

Question

I need to set the use-x-forwarded-headers Http header in camel-cxf like the below and make it as an OSGi bundle to be deployed in Karaf.
<servlet>
<servlet-name>cxf</servlet-name>
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
<init-param>
<param-name>use-x-forwarded-headers</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
I don't want to package this as a WAR, instead i want to make it an OSGi bundle.
Hence, i created a class which extends CXFNonSpringServlet as the code below and set the init-params,
public class XForwadedServlet extends CXFNonSpringServlet {
#Override
protected void loadBus(ServletConfig sc) {
sc.getServletContext().setInitParameter("use-x-forwarded-headers",
"true");
super.loadBus(sc);
Bus bus = getBus();
BusFactory.setDefaultBus(bus);
// createFactoryBean();
}
#Override
public void init(ServletConfig sc) throws ServletException {
sc.getServletContext().setInitParameter("use-x-forwarded-headers",
"true");
super.init(sc);
}
And here's my camel route,
<cxf:cxfEndpoint id="serviceEndpoint"
address="http://localhost:8123/cxf/testCxfRedirect"
loggingFeatureEnabled="true" serviceClass="com.redhat.HelloServiceImpl">
</cxf:cxfEndpoint>
<camelContext trace="false" xmlns="http://camel.apache.org/schema/spring">
<route>
<from uri="cxf:bean:serviceEndpoint"/>
<log message="${body}" loggingLevel="INFO"/>
<bean ref="clientAddress" method="getClientAddress"/>
</route>
</camelContext>
<bean id="destinationRegistry" class="org.apache.cxf.transport.http.DestinationRegistryImpl">
</bean>
<bean id="osgiServlet" class="com.redhat.XForwadedServlet">
<constructor-arg ref="destinationRegistry"></constructor-arg>
<constructor-arg value="true"></constructor-arg>
</bean>
Through soapui, i set the X-Forwarded-For header as below,
Address: http://localhost:8123/cxf/testCxfRedirect
Encoding: UTF-8
Http-Method: POST
Content-Type: text/xml
Headers: {Accept=[*/*], SOAPAction=[""], X-Forwarded-For=[http://google.com]}
Payload: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns1:sayHello xmlns:ns1="http://redhat.com/"><arg0 xmlns="http://redhat.com/">Test</arg0></ns1:sayHello></soap:Body></soap:Envelope>
--------------------------------------
How can i register the CXFNonSpringServlet in OSGi Blueprint container with setting that init-params ?
Is there a way to do this in OSGi ?

Answer 1

This can be achieved by using the pax-web-extender support in Fuse, Camel.
However the packaging will need to be WAR.
Here's the reference from Karaf:
https://ops4j1.jira.com/wiki/display/ops4j/Pax+Web+Extender+-+War+-+Examples
Here's a reference implementation from the Camel Committers:
https://github.com/apache/camel/tree/master/examples/camel-example-reportincident
Hope it helps.