I tried to achieve load balancing using camel and using the below code to get the response from server.But, the rest service is not called.
CamelContext context = new DefaultCamelContext();
context.addRoutes(new RouteBuilder() {
public void configure() {
System.out.println("inside configure....");
from(
"http://localhost:9876/LunaHSMLoadBalancer/csr/getSignature")
.loadBalance()
.roundRobin()
.to("http://localhost:8080/test/services/token/signature",
"http://10.65.49.216:8080/test/services/token/signature");
}
});
context.start();
Thread.sleep(900000);
context.stop();
Related
I am calling a camel endpoint from the service task in a Camunda BPM workflow, and then an external HTTP request is sent to an endpoint and the response is saved as a property in the camel exchange, but the property is not propagated ?
#Override
public void configure() throws Exception {
from("direct:preferredPaymentMethod")
.log("PreferredPaymentMethodRoute")
.bean(PreferredPaymentMethodTransformation.class, "transform")
.setHeader(Exchange.HTTP_QUERY, simple("related.id=${in.headers.relatedId}"))
.marshal().json(JsonLibrary.Jackson)
.to("http4://localhost:9090/paymentMethods/v1/paymentMethod")
.id("PreferredPaymentMethod-http")
.unmarshal(jsonDataFormat)
.convertBodyTo(PaymentMethodResponseBean.class)
.process(new Processor() {
public void process(Exchange exchange) throws Exception {
Map<String, Object> preferredPaymentMethodResponse = new HashMap<>();
preferredPaymentMethodResponse.put("responseCode", exchange.getIn().getHeaders().get(Exchange.HTTP_RESPONSE_CODE));
preferredPaymentMethodResponse.put("response", exchange.getIn().getBody(PaymentMethodResponseBean.class));
exchange.setProperty("preferredPaymentMethodResponse", preferredPaymentMethodResponse);
}
})
.bean(PreferredPaymentMethodTransformation.class, "processResponse")
.id("PreferredPaymentMethod-processResponse")
.routeId("PreferredPaymentMethodRoute");
}
I even tried setting the property in the bean method processResponse.
I am trying the connect to Corda using that component and sending data to Apache ActiveMQ again using Apache Camel's Corda component.
Corda is running properly. Particularly, cardapp-example is running, and Notary- PartyA - PartyB and PartyC are alive. I can query using their terminal.
ActiveMQ is working properly, I test it with another input source.
I've also tried to connect difeerent localhost ports of all four nodes, and also the example one showed in the Camel's corda component webpage.
public class CordaConnector {
public void ConnectToCorda() throws Exception {
CamelContext context = new DefaultCamelContext();
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
context.addComponent("jms", JmsComponent.jmsComponentAutoAcknowledge(connectionFactory));
context.addRoutes(new RouteBuilder() {
#Override
public void configure() throws Exception {
from("corda://localhost:10004?username=user1&password=test&operation=VAULT_TRACK&contractStateClass=#contractStateClass").
}
});
while(true) {
context.start();
}
}
}
I got the following error message:
Exception in thread "main" org.apache.camel.FailedToCreateRouteException: Failed to create route route1: Route(route1)[From[corda://localhost:10004?username=user1&pa... because of Failed to resolve endpoint: corda://localhost:10004?contractStateClass=%23contractStateClass&operation=VAULT_TRACK&password=test&username=user1 due to: Error binding property (contractStateClass=#contractStateClass) with name: contractStateClass on bean: org.apache.camel.component.corda.CordaConfiguration#1de76cc7 with value: #contractStateClass
...
So when tested seperately, corda works properly, ActiveMQ works properly (with different output), and I ave tried different ports to query information. I have alos tried different commands to query, such as:
from("corda://localhost:10000?username=user1&password=test&operation=NETWORK_MAP_FEED").
to("activemq:queue:try");
I've checked this question Failed to create route route1, but was no help.
I would appreciate any help on what might be the reason.
In your route from uri, you are setting the contractStateClass property using value #contractStateClass : this references a bean named contractStateClass in the Camel registry. But since you did not bind any bean with this name in the context registry, Camel fail to resolve this value: Error binding property (contractStateClass=#contractStateClass) with name: contractStateClass on bean: org.apache.camel.component.corda.CordaConfiguration#1de76cc7 with value: #contractStateClass
You simply need to configure a bean of type Class and provide it to the camel registry. Something like that should work ( camel version 2.24.x )
import net.corda.core.contracts.OwnableState;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.SimpleRegistry;
public class CordaConnector {
public static void main(String[] args) {
try {
SimpleRegistry registry = new SimpleRegistry();
registry.put("contractStateClass", OwnableState.class);
CamelContext camelContext = new DefaultCamelContext(registry);
camelContext.addRoutes(new RouteBuilder() {
#Override
public void configure() {
from("corda://localhost:10004?username=user1&password=test&operation=VAULT_TRACK&contractStateClass=#contractStateClass")
.log("got message");
}
});
camelContext.start();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
EDIT for Camel v3.x :
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.support.SimpleRegistry;
public class CordaConnector {
public static void main(String[] args) {
try {
SimpleRegistry registry = new SimpleRegistry();
registry.bind("contractStateClass", MyContractClass.class);
CamelContext camelContext = new DefaultCamelContext(registry);
camelContext.addRoutes(new RouteBuilder() {
#Override
public void configure() {
from("corda://localhost:10004?username=user1&password=test&operation=VAULT_TRACK&contractStateClass=#contractStateClass")
.log("got message");
}
});
camelContext.start();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
I need to browse messages from an active mq using Camel route without consuming the messages.
The messages in the JMS queue are to be read(only browsed and not consumed) and moved to a database while ensuring that the original queue remains intact.
public class CamelStarter {
private static CamelContext camelContext;
public static void main(String[] args) throws Exception {
camelContext = new DefaultCamelContext();
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(ActiveMQConnectionFactory.DEFAULT_BROKER_URL);
camelContext.addComponent("jms", JmsComponent.jmsComponent(connectionFactory));
camelContext.addRoutes(new RouteBuilder() {
#Override
public void configure() throws Exception {
from("jms:queue:testQueue").to("browse:orderReceived") .to("jms:queue:testQueue1");
}
}
);
camelContext.start();
Thread.sleep(1000);
inspectReceivedOrders();
camelContext.stop();
}
public static void inspectReceivedOrders() {
BrowsableEndpoint browse = camelContext.getEndpoint("browse:orderReceived", BrowsableEndpoint.class);
List<Exchange> exchanges = browse.getExchanges();
System.out.println("Browsing queue: "+ browse.getEndpointUri() + " size: " + exchanges.size());
for (Exchange exchange : exchanges) {
String payload = exchange.getIn().getBody(String.class);
String msgId = exchange.getIn().getHeader("JMSMessageID", String.class);
System.out.println(msgId + "=" +payload);
}
As far as I know, not possible in Camel to read (without consuming !) JMS messages...
The only workaround I found (in a JEE app) was to define a startup EJB with a timer, holding a QueueBrowser, and delegating the msg processing to a Camel route:
#Singleton
#Startup
public class MyQueueBrowser {
private TimerService timerService;
#Resource(mappedName="java:/jms/queue/com.company.myqueue")
private Queue sourceQueue;
#Inject
#JMSConnectionFactory("java:/ConnectionFactory")
private JMSContext jmsContext;
#Inject
#Uri("direct:readMessage")
private ProducerTemplate camelEndpoint;
#PostConstruct
private void init() {
TimerConfig timerConfig = new TimerConfig(null, false);
ScheduleExpression se = new ScheduleExpression().hour("*").minute("*/"+frequencyInMin);
timerService.createCalendarTimer(se, timerConfig);
}
#Timeout
public void scheduledExecution(Timer timer) throws Exception {
QueueBrowser browser = null;
try {
browser = jmsContext.createBrowser(sourceQueue);
Enumeration<Message> msgs = browser.getEnumeration();
while ( msgs.hasMoreElements() ) {
Message jmsMsg = msgs.nextElement();
// + here: read body and/or properties of jmsMsg
camelEndpoint.sendBodyAndHeader(body, myHeaderName, myHeaderValue);
}
} catch (JMSRuntimeException jmsException) {
...
} finally {
browser.close();
}
}
}
Apache camel browse component is exactly designed for that. Check here for the documentation.
Can't say more since you have not provided any other information.
Let's asssume you have a route like this
from("activemq:somequeue).to("bean:someBean")
or
from("activemq:somequeue).process(exchange -> {})
All you got to do it put a browse endpoint in between like this
from("activemq:somequeue).to("browse:someHandler").to("bean:someBean")
Then write a class like this
#Component
public class BrowseQueue {
#Autowired
CamelContext camelContext;
public void inspect() {
BrowsableEndpoint browse = camelContext.getEndpoint("browse:someHandler", BrowsableEndpoint.class);
List<Exchange> exchanges = browse.getExchanges();
for (Exchange exchange : exchanges) {
......
}
}
}
I've got route that calls cxfbean:
.to("cxfbean:reservationService")
Tried mock this in my test with
#EndpointInject(uri = "mock:reservationService")
MockEndpoint reservationSystemMock;
#BeforeMethod
private void setUpContext() throws Exception
{
context.getRouteDefinition( "send.to.res.svc.endpoint" ).adviceWith(
context, new AdviceWithRouteBuilder() {
#Override
public void configure() throws Exception
{
interceptSendToEndpoint("cxfbean:reservationService")
.skipSendToOriginalEndpoint()
.to("mock:reservationService");
}
});
}
Also tried mock with weaveByToString( "**reservationService" ).replace().to( "mock:reservationService" );. In both cases I get:
Caused by: org.apache.camel.NoSuchBeanException: No bean could be found in the registry for: reservationService
I'd like to test my route without cxf bean instantiation. I'm using CamelTestSupport class as parent.
Managed to mock cxfbean endpoint with weaveByToString( "To[cxfbean:reservationService]" ):
#EndpointInject(uri = "mock:reservationService")
protected MockEndpoint reservationSystemMock;
#BeforeMethod
private void setUpContext() throws Exception
{
context.getRouteDefinition( "send.to.res.svc.endpoint" ).adviceWith(
context, new AdviceWithRouteBuilder() {
#Override
public void configure() throws Exception {
weaveByToString( "To[cxfbean:reservationService]" )
.replace().to( "mock:reservationService" );
}
});
}
Also seems that we can peek necessary expression for weaveByToString using context.getRouteDefinitions().get(0).toString() in debug watcher
Remember to turn on advice-with on your test class. If you use those annotations, then add #UseAdviceWith to the class.
And then start the camel context after you have advised, which
http://camel.apache.org/spring-testing.html
http://camel.apache.org/advicewith.html
This is my sample code to unmarshal a csv file using Apache Camel.
The issue is that it is not picking up the file from location file://src/test/resources/?&fileName=test.csv and not generating the result in list "Result".
CamelContext context = new DefaultCamelContext();
context.addRoutes(new RouteBuilder() {
public void configure() {
List result=new ArrayList();
//from("file://src/test/resources/?&fileName=test.csv").unmarshal().csv().to(result);
from("file://src/test/resources/").unmarshal().csv().to("file://src/test/res1/");
}
});
ProducerTemplate template = context.createProducerTemplate();
context.start();
for (int i = 0; i < 10; i++) {
template.sendBody("file://src/test/resources/", "this is Test Message: " + i);
System.out.println("hi");
}
Thread.sleep(1000);
context.stop();
Your code from("file://src/test/resources/?&fileName=test.csv").unmarshal().csv().to(result); shall not work. I guess camel context wont even start since the to does not have a valid endpoint. Instead your route should be
from("file://src/test/resources/?&fileName=test.csv").unmarshal().csv().process(new Processor() { public void process(Exchange exchange) throws Exception {
String csvContent = exchange.getIn().getBody(String.class);
// access the result arrayList and store the csvContent.
result.add(csvContent);
}