Servicemix 3.х
Сервисная шина ESB
Евгений Холодков
devclub.eu 23.04.09

Servicemix глазами клиентов

Servicemix глазами архитектора

Java Business Integration (JBI)

Servicemix глазами разработчика
• XML • Java
<beans xmlns:jms=\"http://servicemix.apache.org/jms/1.0\" public class InsuranceJMSMarshaler extends DefaultConsumerMarshaler {
xmlns:esb=\"http://esbinaction.com/insurance\">
<classpath> protected void populateMessage(Message message,
<location>.</location> NormalizedMessage normalizedMessage) throws Exception {
...... if (message instanceof ObjectMessage) {
<location>wstx-asl.jar</location> ObjectMessage objectMessage = (ObjectMessage) message;
<location>xpp3.jar</location> Object payload = objectMessage.getObject();
</classpath> Source source = JiBXUtil.marshalDocument(payload, \"UTF-8\");
<jms:consumer service=\"esb:insuranceReceiver\" normalizedMessage.setContent(source);
endpoint=\"jmsEndpoint“ targetService=\"esb:insuranceDSLRouter\" } else {
destinationName=\"insurance.in“ throw new UnsupportedOperationException(\"JMS message is not a
connectionFactory=\"#connectionFactory\" ObjectMessage\");
marshaler=\"#InsuranceJMSMarshaler\"/> }
<bean id=\"InsuranceJMSMarshaler\" }
class=\"esb.dzone.servicemix.util.InsuranceJMSMarshaler\"/> }
<bean id=\"connectionFactory\"
class=\"org.apache.activemq.ActiveMQConnectionFactory\">
<property name=\"brokerURL\" value=\"tcp://localhost:61616\" />
</bean>
</beans>

Mvn генерирует/управляет кодом
mvn archetype:create
-DarchetypeGroupId=org.apache.servicemix.tooling
-DarchetypeArtifactId=servicemix-http-provider-service-unit
-DgroupId=org.apache.servicemix.samples
-DartifactId=servicemix-example

Бизнес-процесс (1/2)

Бизнес-процесс (2/2)

Процесс в servicemix-e

Еще один пример

Servicemix-http компонент
Consumer Provider
<http:endpoint <http:endpoint
service=\"test:MyProviderService\"
service=\"test:MyConsumerService\"
endpoint=\"myProvider\"
targetService=\"test:MyServiceRoutin
role=\"provider\"
gSlip\"
locationURI=\"http://localhost:8080/
endpoint=\"myConsumer“
MyService\"
role=\"consumer\"
soapVersion=\"1.1\" />
locationURI=\"http://localhost:8192/S
ervice/\"
defaultMep=\"http://www.w3.org/20
04/08/wsdl/in-out\"
soapVersion=\"1.1\"
wsdlResource=\"classpath:MyService.
wsdl\" />

Servicemix-saxon компонент
<beans xmlns:saxon=\"http://servicemix.apache.org/saxon/1.0\"
xmlns:test=\"http://www.mycompany.com/1.0\">
<saxon:xslt service=\"test:myTransform\"
endpoint=\"myEndpoint\"
resource=\"classpath:transform.xsl\" />
</beans>

Servicemix-EIP компонент
• Content-Based Router
• Message Filter
• Pipeline
• Static Recipient List
• Static Routing Slip
• Wire Tap
• XPath Splitter
• Aggregator
• Content Enricher
• Resequencer
• AsyncBridge

Паттерн content-based routing
<eip:content-based-router service=\"test:router\" endpoint=\"endpoint\">
<eip:rules>
<eip:routing-rule>
<eip:predicate>
<eip:xpath-predicate xpath=\"count(/test:echo) = 1\"
namespaceContext=\"#nsContext\" />
</eip:predicate>
<eip:target>
<eip:exchange-target uri=\"endpoint:http://test/pipeline/endpoint\" />
</eip:target>
</eip:routing-rule>
<eip:routing-rule>
<!-- there is no predicate, so this is the default destination -->
<eip:target>
<eip:exchange-target service=\"test:recipients\" />
</eip:target>
</eip:routing-rule>
</eip:rules>
</eip:content-based-router>

Паттерн routing-slip
<eip:static-routing-slip service=\"test:routingSlip\" endpoint=\"endpoint\">
<eip:targets>
<eip:exchange-target service=\"test:transformRequest\" />
<eip:exchange-target service=\"test:myProvider\" />
<eip:exchange-target service=\"test: transformResponse\" />
</eip:targets>
</eip:static-routing-slip>

Servicemix-camel компонент
<!-- the JBI container -->
<sm:container id=\"jbiContainer\" embedded=\"true\">
<sm:components>
<ref id=\"jbi\" />
</sm:components>
<sm:endpoints>
<bean:endpoint service=\"myproject:tracker\" endpoint=\"tracker\" bean=\"#tracker\" />
</sm:endpoints>
</sm:container>
<bean id=\"jbi\" class=\"org.apache.servicemix.camel.CamelJbiComponent\" />
<camelContext id=\"camelContext\" useJmx=\"true\"
xmlns=\"http://activemq.apache.org/camel/schema/spring\">
<package>my.project.routeBuilders</package>
</camelContext>

Интеграционное тестирование
• Wire Tap
• SoapUI

Развертывание
• SA = jar файл
• Standalone vs web application

Итог
• Активно развивающийся ESB с открытым
кодом
• Использует модульную JBI архитектуру
• Активно использует Maven 2
• Интегрирован со Spring-ом
• Содержит много готовых компонентов