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ApacheCon EU 2014: Enterprise Development with Apache Karaf

Achim Nierbeck, profile picture
Achim Nierbeck

The document discusses the implementation of enterprise Java applications within the Apache Karaf container, focusing on the integration of OSGi frameworks and various enterprise requirements such as EJB, CDI, and JPA. It outlines the architecture of Karaf, including its modular capabilities, and details the use of various services like HTTP and clustering via Apache Cellar. Additionally, it provides configuration examples and coding practices for setting up servlets and service registrations.

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Enterprise Development with …
What needs to be done to run JEE like applications inside Karaf?
2014-­‐10-­‐23 3 @anierbeck - Karaf PMC, Apache Member - OPS4j Pax Web Project Lead - Senior IT Consultant @codecentric - co-Author of Apache Karaf Cookbook
Agenda • Enterprise Requirements • OSGi with Karaf • Enterprise Requirements on Karaf • Specialties • Http Service • Cellar - or how to cluster Karaf • Summary 2014-­‐10-­‐23 4
Enterprise Requirements
Enterprise Java EJB 3.1 CDI 2014-­‐10-­‐23 6 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
OSGi with Karaf
OSGi - a very brief introduction • Modular • OSGi Bundles: • High Cohesion (One classloader/bundle) • Low Coupling (Package Import/Export) • Versioning per bundle ( [1.0,2,0) ) • Service Registry 2014-­‐10-­‐23 8
What is Karaf • Container • OSGi Applications • Ligthtweight • expandable to Full Enterprise support • Covers all major needs • Logging • Deployment • Configuration 2014-­‐10-­‐23 9
Karaf - Overview 2014-­‐10-­‐23 10 Config Logging Deployer Console Admin OSGi Framework - Felix / Equinox JMX Blueprint SSH
Enterprise requirements on Karaf
Karaf EJB 3.1 CDI 2014-­‐10-­‐23 12 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
Enterprise - Pax Web EJB 3.1 CDI 2014-­‐10-­‐23 13 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
Enterprise - Pax CDI EJB 3.1 CDI 2014-­‐10-­‐23 14 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
Enterprise - Aries EJB 3.1 CDI 2014-­‐10-­‐23 15 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
Enterprise - Tomee aka OpenEJB EJB 3.1 CDI 2014-­‐10-­‐23 16 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
Enterprise - CXF EJB 3.1 CDI 2014-­‐10-­‐23 17 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
Enterprise - ActiveMQ EJB 3.1 CDI 2014-­‐10-­‐23 18 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
Enterprise - Cellar EJB 3.1 CDI 2014-­‐10-­‐23 19 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
Enterprise - Karaf with features EJB 3.1 CDI 2014-­‐10-­‐23 20 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR SAAJ JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI
Specialties
JPA - Karaf 2014-­‐10-­‐23 22 <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" > <persistence-unit name="cookbook" transaction-type="JTA"> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> <jta-data-source> osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/cookbook) </jta-data-source> <class>de.nierbeck.apachecon.persistence.entity.Book</class> <class>de.nierbeck.apachecon.persistence.entity.Recipe</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="openjpa.Log" value="slf4j" /> <property name="openjpa.RuntimeUnenhancedClasses" value="supported" /> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/> </properties> </persistence-unit> </persistence>
JPA - Karaf 2014-­‐10-­‐23 22 <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" > <persistence-unit name="cookbook" transaction-type="JTA"> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> <jta-data-source> osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/cookbook) </jta-data-source> <class>de.nierbeck.apachecon.persistence.entity.Book</class> <class>de.nierbeck.apachecon.persistence.entity.Recipe</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="openjpa.Log" value="slf4j" /> <property name="openjpa.RuntimeUnenhancedClasses" value="supported" /> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/> </properties> </persistence-unit> </persistence> To have this blueprint JNDI is needed
JTA - Karaf 2014-­‐10-­‐23 23 <blueprint default-activation=„eager" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0" xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd"> <bean id="cookBookServiceImpl" class="de.nierbeck.apachecon.persistence.dao.CookBookServiceImpl"> <jpa:context property="em" unitname="cookbook" /> <tx:transaction method="*" value="Required" /> </bean> <service id="cookBookService" ref="cookBookServiceImpl" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> </blueprint>
JTA - Karaf 2014-­‐10-­‐23 23 <blueprint default-activation=„eager" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0" xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd"> <bean id="cookBookServiceImpl" class="de.nierbeck.apachecon.persistence.dao.CookBookServiceImpl"> <jpa:context property="em" unitname="cookbook" /> <tx:transaction method="*" value="Required" /> </bean> <service id="cookBookService" ref="cookBookServiceImpl" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> </blueprint> To have this blueprint JPA and JTA is needed
Client - Karaf 2014-­‐10-­‐23 24 <?xml version="1.0" encoding="UTF-8"?> <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" default-activation="lazy"> <reference id="cookBookService" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> <command-bundle xmlns="http://karaf.apache.org/xmlns/shell/v1.1.0"> <command> <action class="de.nierbeck.apachecon.commands.CreateBook"> <property name="bookService" ref="cookBookService" /> </action> </command> ... </command-bundle> </blueprint>
Demo
Persistence 2014-­‐10-­‐23 26
Client 2014-­‐10-­‐23 27
Client Shell 2014-­‐10-­‐23 28
Client - Shell 2014-­‐10-­‐23 29
Client Shell 2014-­‐10-­‐23 30
Client - Shell 2014-­‐10-­‐23 31
Http Service with …
HTTP Service 2014-­‐10-­‐23 33 • Using an Activator: final HttpContext httpContext = httpService .createDefaultHttpContext(); // register the BookServlet // first wait for the DAO-Service CookBookService cookBookService; ServiceReference<CookBookService> serviceReference = bundleContext .getServiceReference(CookBookService.class); cookBookService = bundleContext.getService(serviceReference); //now create the servlet ViewBookServlet viewBookServlet = new ViewBookServlet(); //set the DAO to the Servlet viewBookServlet.setCookBookService(cookBookService); final Dictionary<String, Object> initParams = new Hashtable<String, Object>(); try { httpService.registerServlet("/book", // alias viewBookServlet, initParams, httpContext);
Whiteboard • Using the whiteboard approach via Activator public void start(BundleContext bc) throws Exception { bundleContext = bc; // first wait for the DAO-Service CookBookService cookBookService; ServiceReference<CookBookService> serviceReference = bundleContext 2014-­‐10-­‐23 34 .getServiceReference(CookBookService.class); cookBookService = bundleContext.getService(serviceReference); // create new Servlet ViewBookServlet cookBookViewServlet = new ViewBookServlet(); cookBookViewServlet.setCookBookService(cookBookService); registerServiced = bundleContext.registerService(Servlet.class, cookBookViewServlet, null); }
Whiteboard 2014-­‐10-­‐23 35 • Using the whiteboard approach via Blueprint <blueprint default-activation="eager"> <reference id="cookBookService" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> <bean id="viewBookServlet" class="de.nierbeck.apachecon.view.ViewBookServlet" > <property name="cookBookService" ref="cookBookService"/> </bean> <service id="servletService" interface="javax.servlet.Servlet" ref="viewBookServlet" /> </blueprint>
Servlet 3.0 - Just annotation 2014-­‐10-­‐23 36 @WebServlet(urlPatterns = "/book") public class ViewBookServlet extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; @Inject @OsgiService CookBookService cookBookService; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { ... } }
LOST?
Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet
Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet Registerd
Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet Registerd Registerd
Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet
Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd
Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd Registerd
Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd Registerd
Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet
Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd
Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd Registerd
Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd Registerd
Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet
Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd
Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd Injected
Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd Registerd Injected
Demo
View 2014-­‐10-­‐23 43
View 2014-­‐10-­‐23 44
Cluster provided by Apache Karaf Cellar
Cellar - Cluster Communication 2014-­‐10-­‐23 46
Cellar - Cluster Communication 2014-­‐10-­‐23 47 Hazelcast
Cellar - Events 2014-­‐10-­‐23 48
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository osgi:install mvn:groupId/artifactId/version Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast DEPRECATED
Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository cluster:install mvn:groupId/artifactId/version Hazelcast DEPRECATED
Cellar - RMI 2014-­‐10-­‐23 50 Group 1 Node A Consumes OSGi-Service Group 2 Node B Consumes OSGi-Service Node C Consumes OSGi-Service Node A Provides OSGi-Service Node B Hazelcast Provides OSGi-Service
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
Cluster - Demo
Presentation Layer 2014-­‐10-­‐23 53
web.xml - Hazelcast 2014-­‐10-­‐23 54 • Hazelcast for Session Replication <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <filter> <filter-name>hazelcast-filter</filter-name> <filter-class>com.hazelcast.web.WebFilter</filter-class> <!-- Name of the distributed map storing your web session objects --> <init-param> <param-name>map-name</param-name> <param-value>my-sessions</param-value> </init-param> <init-param> <param-name>sticky-session</param-name> <param-value>false</param-value> </init-param> </filter> <filter-mapping> <filter-name>hazelcast-filter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> <dispatcher>REQUEST</dispatcher> </filter-mapping> <listener> <listener-class>com.hazelcast.web.SessionListener</listener-class> </listener> </web-app>
View 2014-­‐10-­‐23 55
View 2014-­‐10-­‐23 56
View 2014-­‐10-­‐23 57
SUMMARY
Enterprise - Karaf 2014-­‐10-­‐23 59 Servlet 3 EJB 3.1 CDI JSF 2 JSP JPA 2 JTA JAX-WS JAX-RPC JAX-RS JAXR SAAJ JAXB JMS JNDI JAAS RMI
JEE with Karaf? • Adoptions needed? YES • Minor on Persistence - JNDI lookup • Minor on transaction - Blueprint JTA • Wiring of Services: • Use Blueprint • Use Servlet 3.0 with CDI - @OsgiService • Session Replication throughout cluster, it’s still standard Hazelcast 2014-­‐10-­‐23 60
Resources • @anierbeck • notitzblog.nierbeck.de • https://github.com/ANierbeck/karaf-enterprise-sample • www.codecentric.de • karaf.apache.org • https://ops4j1.jira.com/wiki/display/paxweb/Pax+Web • #karaf at irc.codehaus.org • https://www.packtpub.com/application-development/apache-karaf-cookbook • Pictures, mainly from flickr 2014-­‐10-­‐23 61
ApacheCon EU 2014: Enterprise Development with Apache Karaf
THANKS FOR LISTENING
Thanks to the Apache Community
Questions
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ApacheCon EU 2014: Enterprise Development with Apache Karaf

  • 2. What needs to be done to run JEE like applications inside Karaf?
  • 3. 2014-­‐10-­‐23 3 @anierbeck - Karaf PMC, Apache Member - OPS4j Pax Web Project Lead - Senior IT Consultant @codecentric - co-Author of Apache Karaf Cookbook
  • 4. Agenda • Enterprise Requirements • OSGi with Karaf • Enterprise Requirements on Karaf • Specialties • Http Service • Cellar - or how to cluster Karaf • Summary 2014-­‐10-­‐23 4
  • 6. Enterprise Java EJB 3.1 CDI 2014-­‐10-­‐23 6 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
  • 8. OSGi - a very brief introduction • Modular • OSGi Bundles: • High Cohesion (One classloader/bundle) • Low Coupling (Package Import/Export) • Versioning per bundle ( [1.0,2,0) ) • Service Registry 2014-­‐10-­‐23 8
  • 9. What is Karaf • Container • OSGi Applications • Ligthtweight • expandable to Full Enterprise support • Covers all major needs • Logging • Deployment • Configuration 2014-­‐10-­‐23 9
  • 10. Karaf - Overview 2014-­‐10-­‐23 10 Config Logging Deployer Console Admin OSGi Framework - Felix / Equinox JMX Blueprint SSH
  • 12. Karaf EJB 3.1 CDI 2014-­‐10-­‐23 12 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
  • 13. Enterprise - Pax Web EJB 3.1 CDI 2014-­‐10-­‐23 13 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
  • 14. Enterprise - Pax CDI EJB 3.1 CDI 2014-­‐10-­‐23 14 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
  • 15. Enterprise - Aries EJB 3.1 CDI 2014-­‐10-­‐23 15 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI JAX-RPC SAAJ
  • 16. Enterprise - Tomee aka OpenEJB EJB 3.1 CDI 2014-­‐10-­‐23 16 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
  • 17. Enterprise - CXF EJB 3.1 CDI 2014-­‐10-­‐23 17 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
  • 18. Enterprise - ActiveMQ EJB 3.1 CDI 2014-­‐10-­‐23 18 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
  • 19. Enterprise - Cellar EJB 3.1 CDI 2014-­‐10-­‐23 19 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI SAAJ JNDI
  • 20. Enterprise - Karaf with features EJB 3.1 CDI 2014-­‐10-­‐23 20 Servlet 3 JSF 2 JSP JPA 2 JTA Bean Validation JAX-WS JAX-RPC JAX-RS JAXR SAAJ JAXB JMS JAAS JASPIC JACC JSR-88 JCA JavaMail JSR-77 RMI JNDI
  • 22. JPA - Karaf 2014-­‐10-­‐23 22 <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" > <persistence-unit name="cookbook" transaction-type="JTA"> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> <jta-data-source> osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/cookbook) </jta-data-source> <class>de.nierbeck.apachecon.persistence.entity.Book</class> <class>de.nierbeck.apachecon.persistence.entity.Recipe</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="openjpa.Log" value="slf4j" /> <property name="openjpa.RuntimeUnenhancedClasses" value="supported" /> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/> </properties> </persistence-unit> </persistence>
  • 23. JPA - Karaf 2014-­‐10-­‐23 22 <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" > <persistence-unit name="cookbook" transaction-type="JTA"> <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider> <jta-data-source> osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/cookbook) </jta-data-source> <class>de.nierbeck.apachecon.persistence.entity.Book</class> <class>de.nierbeck.apachecon.persistence.entity.Recipe</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="openjpa.Log" value="slf4j" /> <property name="openjpa.RuntimeUnenhancedClasses" value="supported" /> <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema"/> </properties> </persistence-unit> </persistence> To have this blueprint JNDI is needed
  • 24. JTA - Karaf 2014-­‐10-­‐23 23 <blueprint default-activation=„eager" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0" xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd"> <bean id="cookBookServiceImpl" class="de.nierbeck.apachecon.persistence.dao.CookBookServiceImpl"> <jpa:context property="em" unitname="cookbook" /> <tx:transaction method="*" value="Required" /> </bean> <service id="cookBookService" ref="cookBookServiceImpl" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> </blueprint>
  • 25. JTA - Karaf 2014-­‐10-­‐23 23 <blueprint default-activation=„eager" xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0" xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0" xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd"> <bean id="cookBookServiceImpl" class="de.nierbeck.apachecon.persistence.dao.CookBookServiceImpl"> <jpa:context property="em" unitname="cookbook" /> <tx:transaction method="*" value="Required" /> </bean> <service id="cookBookService" ref="cookBookServiceImpl" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> </blueprint> To have this blueprint JPA and JTA is needed
  • 26. Client - Karaf 2014-­‐10-­‐23 24 <?xml version="1.0" encoding="UTF-8"?> <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0" default-activation="lazy"> <reference id="cookBookService" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> <command-bundle xmlns="http://karaf.apache.org/xmlns/shell/v1.1.0"> <command> <action class="de.nierbeck.apachecon.commands.CreateBook"> <property name="bookService" ref="cookBookService" /> </action> </command> ... </command-bundle> </blueprint>
  • 27. Demo
  • 31. Client - Shell 2014-­‐10-­‐23 29
  • 33. Client - Shell 2014-­‐10-­‐23 31
  • 35. HTTP Service 2014-­‐10-­‐23 33 • Using an Activator: final HttpContext httpContext = httpService .createDefaultHttpContext(); // register the BookServlet // first wait for the DAO-Service CookBookService cookBookService; ServiceReference<CookBookService> serviceReference = bundleContext .getServiceReference(CookBookService.class); cookBookService = bundleContext.getService(serviceReference); //now create the servlet ViewBookServlet viewBookServlet = new ViewBookServlet(); //set the DAO to the Servlet viewBookServlet.setCookBookService(cookBookService); final Dictionary<String, Object> initParams = new Hashtable<String, Object>(); try { httpService.registerServlet("/book", // alias viewBookServlet, initParams, httpContext);
  • 36. Whiteboard • Using the whiteboard approach via Activator public void start(BundleContext bc) throws Exception { bundleContext = bc; // first wait for the DAO-Service CookBookService cookBookService; ServiceReference<CookBookService> serviceReference = bundleContext 2014-­‐10-­‐23 34 .getServiceReference(CookBookService.class); cookBookService = bundleContext.getService(serviceReference); // create new Servlet ViewBookServlet cookBookViewServlet = new ViewBookServlet(); cookBookViewServlet.setCookBookService(cookBookService); registerServiced = bundleContext.registerService(Servlet.class, cookBookViewServlet, null); }
  • 37. Whiteboard 2014-­‐10-­‐23 35 • Using the whiteboard approach via Blueprint <blueprint default-activation="eager"> <reference id="cookBookService" interface="de.nierbeck.apachecon.persistence.api.CookBookService" /> <bean id="viewBookServlet" class="de.nierbeck.apachecon.view.ViewBookServlet" > <property name="cookBookService" ref="cookBookService"/> </bean> <service id="servletService" interface="javax.servlet.Servlet" ref="viewBookServlet" /> </blueprint>
  • 38. Servlet 3.0 - Just annotation 2014-­‐10-­‐23 36 @WebServlet(urlPatterns = "/book") public class ViewBookServlet extends HttpServlet { /** * */ private static final long serialVersionUID = 1L; @Inject @OsgiService CookBookService cookBookService; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { ... } }
  • 39. LOST?
  • 40. Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet
  • 41. Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet Registerd
  • 42. Registering - Servlet 2014-­‐10-­‐23 38 Pax-Web HTTP Service Service- Registry Servlet Registerd Registerd
  • 43. Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet
  • 44. Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd
  • 45. Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd Registerd
  • 46. Registering - Whiteboard 2014-­‐10-­‐23 39 Pax-Web WebContainer Service-Tracker Service- Registry Servlet Registerd Registerd
  • 47. Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet
  • 48. Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd
  • 49. Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd Registerd
  • 50. Registering - WAR 2014-­‐10-­‐23 40 Pax-Web WebContainer Pax-Web WAR Extender Service- Registry WAB-Bundle Servlet Registerd Registerd
  • 51. Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet
  • 52. Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd
  • 53. Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd Injected
  • 54. Servlet + JPA / Service 2014-­‐10-­‐23 41 Blueprint Extender Pax-Web WAR Extender JPA-Bundle Service- Registry JPA - Service WEB-Bundle Servlet Registerd Registerd Injected
  • 55. Demo
  • 58. Cluster provided by Apache Karaf Cellar
  • 59. Cellar - Cluster Communication 2014-­‐10-­‐23 46
  • 60. Cellar - Cluster Communication 2014-­‐10-­‐23 47 Hazelcast
  • 61. Cellar - Events 2014-­‐10-­‐23 48
  • 62. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 63. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository osgi:install mvn:groupId/artifactId/version Hazelcast
  • 64. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 65. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 66. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 67. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 68. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 69. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast
  • 70. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository Hazelcast DEPRECATED
  • 71. Cellar - Distributing Bundles 2014-­‐10-­‐23 49 Node A Node B Node C Maven Repository cluster:install mvn:groupId/artifactId/version Hazelcast DEPRECATED
  • 72. Cellar - RMI 2014-­‐10-­‐23 50 Group 1 Node A Consumes OSGi-Service Group 2 Node B Consumes OSGi-Service Node C Consumes OSGi-Service Node A Provides OSGi-Service Node B Hazelcast Provides OSGi-Service
  • 73. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 74. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 75. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 76. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 77. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 78. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 79. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 80. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 81. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 82. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 83. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 84. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 85. Cellar - Web session failover 2014-­‐10-­‐23 51 Node A Hazelcast DataBase Client Filter Servlet Node B Filter Servlet
  • 88. web.xml - Hazelcast 2014-­‐10-­‐23 54 • Hazelcast for Session Replication <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <filter> <filter-name>hazelcast-filter</filter-name> <filter-class>com.hazelcast.web.WebFilter</filter-class> <!-- Name of the distributed map storing your web session objects --> <init-param> <param-name>map-name</param-name> <param-value>my-sessions</param-value> </init-param> <init-param> <param-name>sticky-session</param-name> <param-value>false</param-value> </init-param> </filter> <filter-mapping> <filter-name>hazelcast-filter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> <dispatcher>REQUEST</dispatcher> </filter-mapping> <listener> <listener-class>com.hazelcast.web.SessionListener</listener-class> </listener> </web-app>
  • 93. Enterprise - Karaf 2014-­‐10-­‐23 59 Servlet 3 EJB 3.1 CDI JSF 2 JSP JPA 2 JTA JAX-WS JAX-RPC JAX-RS JAXR SAAJ JAXB JMS JNDI JAAS RMI
  • 94. JEE with Karaf? • Adoptions needed? YES • Minor on Persistence - JNDI lookup • Minor on transaction - Blueprint JTA • Wiring of Services: • Use Blueprint • Use Servlet 3.0 with CDI - @OsgiService • Session Replication throughout cluster, it’s still standard Hazelcast 2014-­‐10-­‐23 60
  • 95. Resources • @anierbeck • notitzblog.nierbeck.de • https://github.com/ANierbeck/karaf-enterprise-sample • www.codecentric.de • karaf.apache.org • https://ops4j1.jira.com/wiki/display/paxweb/Pax+Web • #karaf at irc.codehaus.org • https://www.packtpub.com/application-development/apache-karaf-cookbook • Pictures, mainly from flickr 2014-­‐10-­‐23 61
  • 98. Thanks to the Apache Community
  • 100. Thanks