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Summary: This document provides basic information about the extension providing Apache Camel support for Java.

Extension ID

com.castsoftware.camel

What's new?

Please see Apache Camel - 1.0 - Release Notes for more information.

In what situation should you install this extension?

This extension should be installed when your Java application consists of Apache Camel Routes. Objects created for the components encountered in Apache Camel Route are linked to objects produced by the JEE Analyzer. This will result in better transactions and calculation of Automated Function Points.

Function Point, Quality and Sizing support

This extension provides the following support:

  • Function Points (transactions): a green tick indicates that Function Point counting and Transaction Risk Index are supported
  • Quality and Sizing: a green tick indicates that CAST can measure size and that a minimum set of Quality Rules exist
Function Points
(transactions)
(tick)
Quality and Sizing(error)

CAST AIP compatibility

This extension is compatible with:

CAST AIP releaseSupported
8.3.x(tick)
8.2.x(tick)

Supported DBMS servers

This extension is compatible with the following DBMS servers:

DBMSSupported
CSS/PostgreSQL(tick)
Oracle(tick)
Microsoft SQL Server(error)

Prerequisites

(tick)Installation of any compatible release of CAST AIP (see table above)

Download and installation instructions

Include the extension using the interface in AIP Console:

There is nothing further to do. Any Apache Camel configuration defined in XML files in the application source code will be automatically detected. Follow the instructions below to run a new analysis/snapshot to generate new results:

What results can you expect?

Once the analysis/snapshot generation is completed, you can view the results in the normal manner (for example via CAST Enlighten):

Objects

IconDescription Icon DescriptionIconDescription

Apache Camel HTTP Get Operation

 

Apache Camel JMS Queue Receive

Apache Camel Unknown ActiveMQ Queue Receive

Apache Camel HTTP Put Operation

 

Apache Camel JMS QueueCall

Apache Camel Unknown ActiveMQ Queue Call

Apache Camel HTTP Post Operation

 

 Apache Camel Unknown JMS Queue Receive

Apache Camel RabbitMQ Topic Receive

Apache Camel HTTP Delete Operation 

 

 Apache Camel Unknown JMS Queue Call

Apache Camel RabbitMQ Topic Call

Apache Camel HTTP Any Operation 

 

Apache Camel IBM Queue Receive

Apache Camel Unknown RabbitMQ Topic Receive

Apache Camel Route Call

 

Apache Camel IBM Queue Call

Apache Camel Unknown RabbitMQ Topic Call

Apache Camel Route

 

Apache Camel Unknown IBM_Queue Receive

Apache Camel File

Apache Camel Bean Call

 

Apache Camel Unknown IBM Queue Call

Apache Camel File Call

Apache Camel Process Call

 

Apache Camel ActiveMQ Queue Receive

Apache Camel Kafka Topic Receive

Apache Camel Database Query

 

Apache Camel ActiveMQ Queue Call

Apache Camel Kafka Topic Call

Apache Camel Unknown Kafka Topic Receive

Apache Camel Unknown Kafka Topic Call

Only callLinks are created between various objects created by this extension.

Code examples

XML DSL- callLink between REST POST service and Apache Camel Route Call

 Click here to expand...
<rest path="restservices/sapmp/v1/cart/">
            <post uri="/addCart">
                <to uri="direct:addCart" />
             </post>

Java DSL- callLink between REST POST service and Apache Camel Route Call

 Click here to expand...
public void subscriberServiceRoute() {

  	ajscRoute.setRoute(from("restlet:/subscriber/subscribernotifications?restletMethods=POST&restletBinding=#customBinding")
	.log("************ Determine the event type ************")
    	.choice()
	.when().simple("${body} =~ '" + SubscriberConstants.CANCEL_SUBSCRIBER + "'").to("direct:cancelSubscriber")
}

XML DSL - callLink between REST DELETE and Apache Camel Route Call

 Click here to expand...


<delete uri="/order/modify/modifyOrder">
                <to uri="direct:modifyOrder" />            
</delete>

XML DSL - callLink between REST PUT and Apache Camel Route Call

 Click here to expand...
<put uri="/order/modify/modifyOrder">
                <to uri="direct:modifyOrder" />            
</put>

XML DSL - callLink between ApacheCamel Route and Apache Camel Route Call

 Click here to expand...


<from uri="direct:submitOrder" />
	<to uri="direct:fanAuthorization" />

Java DSL - callLink between Apache Camel Route and Apache Camel Route Call

 Click here to expand...
public void unenroll()
{
  	from("direct:unenrollSubscriber")
  	.process("prepareInputToUnEnroll")
  	.to("invokeUnenrollService")
        .log("Unenroll Service Status Code in MobileSplit :: ${in.headers.CamelHttpResponseCode}")
        .choice()
        .when().simple("${in.headers.CamelHttpResponseCode} =~ "+ "'"+SubscriberConstants.RESPONSE_SUCCESS_CODE+"'"
          + " || ${in.headers.CamelHttpResponseCode} =~ '"+SubscriberConstants.ACCEPTED_CODE+"'")
           .to("direct:retireRecord")
           .process(SubscriberConstants.RESPONSE_HANDLER)
        .otherwise()
             .setBody().constant(SubscriberConstants.MESSAGE_UNENROLLMENT_UNSUCCESSFUL)
             .process(SubscriberConstants.RESPONSE_ERROR_HANDLER)
        .endChoice().end(); 
}

Java DSL - callLink between Apache Camel Route (seda)  and Apache Camel Route Call (direct)

 Click here to expand...
public void configure() throws Exception {
	from("seda:largeListConsumer?concurrentConsumers=1&size=1000&timeout=0&blockWhenFull=true")
                .routeId("largeListConsumer")
                .to("direct:processFile")
                .end();
}

XML DSL - callLinks between Rest POST service and Bean Call, Process Call

 Click here to expand...
<from id="_from1" uri="restlet:/addp/v1/account/profiles?restletMethods=POST&restletBinding=#customBinding"/>
        <doTry id="_doTrymp">
            <to id="_to_MAN1" uri="bean:restServiceImpl?method=manageProfile"/>
            <process id="_manageProfileService" ref="manageProfileService"/>

Java DSL - callLinks between Rest POST service and Bean Call, Process Call

 Click here to expand...
public void subscriberServiceRoute()
{
  	ajscRoute.setRoute(from("restlet:/subscriber/subscribernotifications?restletMethods=POST&restletBinding=#customBinding")
  	  .bean("SubscriberNotificationBeans","getSubscriberNotifications(exchange)")
 	  .process("decideEventType"));
}

XML DSL - callLink between Apache Camel Route and Bean Call

 Click here to expand...


<from uri="direct:submitOrder" />
  <interceptFrom id="_interceptFrom2">
   	<to id="submitOrderCamelInterceptor" uri="bean:camelInterceptor?method=invokepreInterceptorChain" />
  </interceptFrom>

XML DSL - callLink between Apache Camel Route and Process Call

 Click here to expand...


<from id="_from_D4" uri="direct:fanAuthorization" />
  <process ref="prepareProfileInputData" />

Java DSL - callLinks between Apache Camel Route and Bean Call, Process Call

 Click here to expand...
public void cancelSubscriber() {
    from("direct:cancelSubscriber").process("prepareInputToAddpDeviceDetails") 
                                       .bean("inquireEnterpriseDeviceDeploymentDetails", "inquireDeviceDetailsByCtn(${body})");
}

XML DSL - callLinks between REST Post Service and JDBC Query

 Click here to expand...
<from uri="restlet:/user?restletMethod=POST"/>
          <setBody>
                <simple>select * from user ORDER BY id desc LIMIT 1</simple>
            </setBody>
            <to uri="jdbc:dataSource"/>        

<route id="createUser">
            <from uri="restlet:/user?restletMethod=POST"/>
            <setBody>
                <simple>insert into user(firstName, lastName) values('${header.firstName}','${header.lastName}');  
                    CALL IDENTITY();               
  		</simple>
            </setBody>
            <to uri="jdbc:dataSource"/>

Java DSL - callLink between REST Post Service and JDBC Query

 Click here to expand...
public void configure() {
    from("restlet:/user?restletMethod=POST")
	.setBody(simple("select * from user ORDER BY id desc LIMIT 1"))
        .to("jdbc:dataSource");
}

public void configure() {  
   from("restlet:/user/{userId}?restletMethods=GET,PUT,DELETE")
	 .setBody(simple("update user set firstName='${header.firstName}', lastName='${header.lastName}' where id = ${header.userId}"))
         .to("jdbc:dataSource"); 
}

Java DSL - callLink between JMS Queue Receive and JMS Queue Call

 Click here to expand...


public void configure() throws Exception 
{
   from("jms:JmsQueue").bean(ProcessingBean.class, "doSomething").to("jms:redirected");
}

XML DSL - callLink between File and File Call

 Click here to expand...
<route id="fileRoute2">
	<from uri="file:home/customers/new?fileName=new.xml"/>
    <to uri="file://home/customers/old"/>
</route>

Java DSL - callLink between File and File Call

 Click here to expand...
public void configure() throws Exception {
	from("file:home/customers/old")
                .routeId("transfer")
				.log(LoggingLevel.INFO, "com.toyota.tme.cws.transform.route.error", "Transferring File - ${file:name}")
                .to("file:home/customers/new")
                .end();
}

Java DSL - callLink between File and Bean Call

 Click here to expand...
public void configure () throws Exception {
	from("file://inputdir?fileName=order.xml")
                .routeId("readFilefromDir")
				.log(LoggingLevel.INFO, "com.toyota.tme.cws.transform.route.error", "Processing File - ${file:name}")
                .bean("FileBusiness", "moveToSedaQueue")
                .end();
}

Java DSL - callLink between Apache Camel Route and Kafka Topic Call

 Click here to expand...
public void configure () throws Exception {
	from("direct:start")       
            .to("kafka:localhost:8080?topic=testkafkaprod3");
}

Java DSL - callLink between Kafka Topic Receive and File Call

 Click here to expand...
public void configure () throws Exception {
	from("kafka:localhost:8080?topic=testkafkacon1&zookeeperHost=localhost&zookeeperPort=2181&groupId=group1").to("file:input");
}

callLinks in the complete transaction

 Click here to expand...

Limitations

  • Unknown queue/process/bean/route/file/jms/kafka object is created in case where the exact name can't be retrieved
  • Routes defined using route templates result in unknown route objects 
  • All other route components are ignored. Any Route starting with a component not mentioned in the Object section , the whole of the Route with its components will be ignored.
  • Any component created with a customized name will not be handled or created
  • There may be missing/multiple links instead of one between process call and process method of the target class
  • There may be multiple links instead of one between bean call and target method of the bean
  • There may be incorrect bookmarks in few call links and objects
  • One of the signature for the overloaded method idempotentConsumer method of org.apache.camel.model.ProcessDefinition is not supported. This suspends the creation of the objects for the components in that route following this method.
  • Current version does not support Kafka topic using Kafka idempotent repository
  • Consuming messages from multiple Kafka topics is not supported
  • Kafka topic receive/call object is always created by the name whatever is present in Kafka component topic. There is a possibility that name mentioned of the topic is an alias and refers to something else. Due to some design constraints, it will not be evaluated to refer to the exact value. Hence, object will be created in the name present in Kafka component.

Future development

  •  More Components Support, Better Linking, Fixing Bookmark Issue, Custom Component Support.




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