I have an interface which I am using as Camel Proxy
<http://camel.apache.org/using-camelproxy.html> . My route is as below:
from("direct:services")
.onException(Exception.class)
.process(new Processor() {
@Override
public void process(Exchange arg0) throws Exception {
Exception e =
arg0.getProperty(Exchange.EXCEPTION_CAUGHT,
Exception.class);
LOGGER.error(e, e.getMessage());
}
}).handled(true).end()
.setHeader(Exchange.HTTP_URI, simple("${body.url}"))
.setHeader(Exchange.HTTP_METHOD,simple("${body.httpMethod}"))
.setHeader(Exchange.CONTENT_TYPE, simple("${body.contentType}"))
.setBody(simple("${body.requestBody}"))
.choice()
.when(simple("${body.proxyRequired} == 'true'"))
.inOut("{{http.urlProxy}}")
.otherwise()
.inOut("{{http.url}}")
.end()
.setBody(bean(appUtil, "extractResponse"));
The interface is :
public interface ApiServices {
ServiceProviderResponse performOperation(ServiceProviderRequest
request);
}
And the ServiceProviderResponse and ServiceProviderRequest classes :
public class ServiceProviderRequest {
private String url;
private String requestBody;
private String httpMethod;
private String contentType;
private boolean proxyRequired;
private Map<String, String> headers;
//getters and setters
}
public class ServiceProviderResponse {
private int statusCode;
private String body;
private String errorMessage;
private String contentType;
private String url;
//getters and setters
}
This is how this whole thing is working :
@Produce(uri = "direct:services")
ApiServices appServices;
ServiceProviderResponse response =
appServices.performOperation(request);
Earlier my interface's method was : `ServiceProviderResponse
performOperation(String url);` and it worked fine(ofcourse my route was
different earlier). So is it something that we cannot use custom object
types like this? The exception that I get :
Caused by: org.apache.camel.InvalidPayloadException: No body available
of type: com.common.util.ServiceProviderResponse but has value:
BeanInvocation public abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]] of type:
org.apache.camel.component.bean.BeanInvocation on: Message: BeanInvocation
public abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]]. Caused by: No type
converter available to convert from type:
org.apache.camel.component.bean.BeanInvocation to the required type:
com.common.util.ServiceProviderResponse with value BeanInvocation public
abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]]. Exchange[Message:
BeanInvocation public abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]]]. Caused by:
[org.apache.camel.NoTypeConversionAvailableException - No type converter
available to convert from type:
org.apache.camel.component.bean.BeanInvocation to the required type:
com.common.util.ServiceProviderResponse with value BeanInvocation public
abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]]]
at
org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:102)
at
org.apache.camel.component.bean.AbstractCamelInvocationHandler.getBody(AbstractCamelInvocationHandler.java:58)
at
org.apache.camel.component.bean.AbstractCamelInvocationHandler.afterInvoke(AbstractCamelInvocationHandler.java:148)
at
org.apache.camel.component.bean.AbstractCamelInvocationHandler$1.call(AbstractCamelInvocationHandler.java:85)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at
org.apache.camel.component.bean.AbstractCamelInvocationHandler.invokeWithbody(AbstractCamelInvocationHandler.java:101)
at
org.apache.camel.component.bean.CamelInvocationHandler.invoke(CamelInvocationHandler.java:44)
... 43 more
Caused by: org.apache.camel.NoTypeConversionAvailableException: No type
converter available to convert from type:
org.apache.camel.component.bean.BeanInvocation to the required type:
com.common.util.ServiceProviderResponse with value BeanInvocation public
abstract com.common.util.ServiceProviderResponse
com.common.util.ApiServices.performOperation(com.common.util.ServiceProviderRequest)
with [com.common.util.ServiceProviderRequest@4ce55b]]
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:147)
at
org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:100)
... 50 more
Exception says something about TypeConverters, do I need to implement a type
converter also now ? If yes how to do it? I have already gone through Camel
docs for type converter but I dont understand from it much.
Also I guess most of you have understood what I want to achieve, so if you
guys have any different methods to accomplish this or some suggestions,
please post it.
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