I am afraid the restlet component does not set the HTTP response code
anywhere. I am using a simple logger to inspect the Exchange instance
comming from the restlet:
<bean id="header.logger"
class="ExchangeHeadersInspector" />
where the ExchengeHeadersInspector is coded in Scala:
import org.apache.camel.Exchange
import se.scalablesolutions.akka.util.Logging
import org.apache.camel.Processor
class ExchangeHeadersInspector extends Processor with Logging {
def process(exchange: Exchange): Unit = {
log.debug("in.headers: %s" format exchange.getIn.getHeaders)
log.debug("exchange.properties: %s" format exchange.getProperties)
log.debug("exchange.failed: %s" format exchange.isFailed)
}
}
As you can see from the log produced by it there is no key
CamelHttpResponseCode within the exchange.getIn.getHeaders map:
[DEBUG] [2010-09-30 14:57:47,017] [main]
c.b.i.c.a.l.ExchangeHeadersInspector: in.headers:
{org.restlet.http.headers=[Server: Apache-Coyote/1.1, Content-Type:
text/html;charset=utf-8, Content-Length: 1090, Date: Thu, 30 Sep 2010
12:57:46 GMT, Connection: close]}
[DEBUG] [2010-09-30 14:57:47,018] [main]
c.b.i.c.a.l.ExchangeHeadersInspector: exchange.properties:
{CamelToEndpoint=http:// ... }
[DEBUG] [2010-09-30 14:57:47,018] [main]
c.b.i.c.a.l.ExchangeHeadersInspector: exchange.failed: false
Is it possible that it is stripped down from the Exchange while routing from
the restlet to my process component?
Anyway I also tried something similar that Claus suggested and inserted some
validation before the JSON unmarshalling:
<camel:route>
<camel:from uri="direct:rest"/>
<camel:to uri="restlet:http://somewhere.net/path/to/rest/api"/>
<camel:process ref="header.logger" />
<camel:validate>
<camel:simple>${header.CamelHttpResponseCode} ==
200</camel:simple>
</camel:validate>
<camel:unmarshal ref="json" />
</camel:route>
And even in case of 200 response code I received exception as there is no
CamelHttpResponseCode key in the headers map:
SEVERE: Failed delivery for exchangeId:
b71067ad-e305-4762-a4e7-f7baab6dd42d. Exhausted after delivery attempt: 1
caught: org.apache.camel.processor.validation.PredicateValidationException:
Validation failed for Predicate[header(CamelHttpResponseCode) == 200].
Exchange[Message: ... ]
org.apache.camel.processor.validation.PredicateValidationException:
Validation failed for Predicate[header(CamelHttpResponseCode) == 200].
Exchange[Message: ... ]
...
Petr
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