Excetion: waiting for namespace handlers [http://camel.apache.org/schema/cxf

2016-08-26 09:19:06,451 | INFO  | -7.0.0.M2/deploy | BlueprintContainerImpl           | 28 - org.apache.aries.blueprint.core - 1.6.1 | Bundle com.xxxx.yyyyyyy.esb/0.0.1.SNAPSHOT is waiting for namespace handlers [http://camel.apache.org/schema/cxf]

When I was developing an Apache Camel REST project using CXFRS with the blueprint schema in XML DSL, above INFO log was appeared and bundle went to a Grace period. When the issue occurred my xml namespace configurations as below.

<?xml version="1.0" encoding="UTF-8"?>

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util xmlns:cxf="http://camel.apache.org/schema/cxf"     
xsi:schemaLocation=" 
http://www.osgi.org/xmlns/blueprint/v1.0.0 https://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd 
http://camel.apache.org/schema/cxf http://camel.apache.org/schema/cxf/camel-cxf.xsd"> 

I verified several times for the existence of the camel-cxf.xsd in the schemas of the camel-cxf dependency.

And also verified servicemix container contains the camel-cxf feature installed.

Finally I understood name-spaces and XSD locations should be as follows since I am using the blueprint schema.

xmlns:cxf="http://camel.apache.org/schema/bluprint/cxf" 

http://camel.apache.org/schema/blueprint/cxf http://camel.apache.org/schema/blueprint/cxf/camel-cxf.xsd

Then issue resolved.

Available XML tags in Apache Camel

onException	when	onCompletion
intercept	interceptFrom	interceptSendToEndpoint
to	toD	route
aop	aggregate	bean
doCatch	choice	otherwise
convertBodyTo	delay	dynamicRouter
enrich	filter	doFinally
idempotentConsumer	inOnly	inOut
loadBalance	log	loop
marshal	multicast	pipeline
policy	pollEnrich	process
recipientList	removeHeader	removeHeaders
removeProperties	removeProperty	resequence
rollback	routingSlip	sample
script	setBody	setExchangePattern
setFaultBody	setHeader	setOutHeader
setProperty	sort	split
stop	threads	throttle
throwException	transacted	transform
doTry	unmarshal	validate
whenSkipSendToEndpoint	wireTap	restBinding

How to set message headers for a apache camel restlet request

It is simple to set message headers for camel restlet request (Here we follow XML method to add those headers to a camel routing).

Following route will send a GET request to  http://192.168.1.20:8081/abcsys/services/esbInboundAdaptorServiceRest/V1.0/receiveMessage including Basic Authentication headers with username admin and password admin. A query param also get appended to the URI as http://192.168.1.20:8081/abcsys/services/esbInboundAdaptorServiceRest/V1.0/receiveMessage?message=new message

<route>

                    <!-- Set the query parameters to URI -->
                    <setHeader headerName="CamelHttpQuery">
                        <simple>message=new message</simple>
                    </setHeader>

                    <!-- Set the authentication header username for endpoint authorization -->
                    <setHeader headerName="CamelRestletLogin">
                        <simple>admin</simple>
                    </setHeader>

                    <!-- Set the authorization header password for endpoint authorization -->
                    <setHeader headerName="CamelRestletPassword">
                        <simple>admin</simple>
                    </setHeader>

                    <to
                        uri="restlet:http://192.168.1.20:8081/abcsys/services/esbInboundAdaptorServiceRest/V1.0/receiveMessage" />

</route>

Refer this for possible lists of headers that can be set to restlet requests.