Building Microservices with Jakarta EE and MicroProfile - EclipseCon 2019

Transcript

1. EclipseCon 2019 Tutorial session: Building Microservices with Jakarta EE & MicroProfile
2. Talip Ozkeles Java (EE) Developer IT Consultant Conference Speaker @tozkeles group9.nl
3. Ivo Woltring Codesmith Software Architect Conference Speaker @ivonet ivonet.nl
4. Edwin Derks Java (EE) Developer Software Architect Conference Speaker @edwinderks cloudnativesolutions.guru
5. Tutorial Session Prerequisites This URL redirects to the Github page containing the tutorial assignments: http://ivo2u.nl/oA Follow these instructions to setup your device for the tutorial: http://ivo2u.nl/oc
6. Photo by Mikes Photos from Pexels
7. What are Jakarta EE and MicroProfile exactly?
8. Photo by Inge Wallumrød from Pexels This tutorial will focus on: - Vendors and Portability - Various Runtimes - Efficient development
9. Photo by David Dibert from Pexels - Ship with Docker - Running in a cloud-native environment
10. Evolution of Java EE and Spring 1990’s now() ? CLOUD Virtualize Hardware
11. Feature-rich platform of API’s for building enterprise applications Jakarta EE in a nutshell... - Profiles - Full - Web - Enterprise Development APIs - JSP - JSF - EJB - CDI - JAX-RS - JPA - ...many others
12. Designed for building and running scalable applications Microprofile in a nutshell... - Java EE / Jakarta EE 8 base (CDI, JSON-P, JAX-RS) - Microservice APIs - Healthcheck - Fault Tolerance - Metrics - Config - Tracing - Rest Client - JWT - …others
13. Photo by Miguel Á. Padriñán from Pexels Uber / Fat JAR Application Server Hollow JAR +
14. Power of the Application Server
15. Examples of Application Server Vendors Community Edition & Production Supported Community Edition Community Edition Production Supported
16. Jakarta EE & MicroProfile compliant Application Server WAR / EAR Java • Runs with Java version supported by the server Conventional application server runtime <dependency> <groupId>jakarta.platform</groupId> <artifactId>jakarta.jakartaee-api</artifactId> <version>8.0.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.eclipse.microprofile</groupId> <artifactId>microprofile</artifactId> <version>2.2</version> <type>pom</type> </dependency> • One complete package providing Jakarta EE • What you see is what you get • Thoroughly tested by vendor • Easily patched and upgraded • Enables portability for enterprise applications
17. Photo by Tom Fisk from Pexels Application Server Runtime: Hollow JAR
18. Application server runtime provided as Hollow JAR Java • Runs with Java version supported by the server JAR WAR • Applications server as one single artifact • Little to no operational management tools • Don’t include the whole application server with every build of your application • “Just enough app server”
19. Photo by Tom Fisk from Pexels Application Server Runtime: Uber JAR
20. Application server runtime provided as Uber JAR Java • Runs with Java version supported by the server JAR Compiled Java Bytecode • One single artifact • Little to no operational management tools • Contains your code and application server • Opposite of lean and tidy, so bigger in size • “Just enough app server”
21. JDK 8+ Platform Choose the fitting Java version for your application server runtime JVM JAR WAR EAR COMPILES RUNS IMPLEMENT Runtime 8 5.193 2.2 HOTSPOT DEPLOYS
22. Photo by David Dibert from Pexels But in the end Docker … does it even matter?
23. Shipping and deploying with Docker Docker Image Choose your runtime Java JAR / WAR / EAR Operational Environment • Use docker-compose • Ship anywhere • Run anywhere Docker Image Choose your runtime Java JAR / WAR / EAR
24. Photo by Dana Tentis from Pexels Workshop: Quote of the Day App
25. Workshop: Quote of the Day App
26. WAR / EAR Java 11 Java 8 JAR W A R Java 11 JAR Compiled Java Docker Image Payara Server Java 11 WAR Docker Image Payara Micro Java 8 WAR Docker Image Java 11 Uber JAR application-server-project uber-jar-project Quotes - JAX-RS - MicroProfile RestClient - MicroProfile FaultTolerance: - Retry, Fallback, Timeout - JSF + PrimeFaces - CDI - MicroProfile RestClient - JAX-RS - CDI - JPA - JSON-B hollow-jar-project
27. Docker Image Payara Server Java 11 WAR Docker Image Payara Micro Java 8 WAR Docker Image Java 11 Uber JAR - JAX-RS - MicroProfile RestClient - MicroProfile FaultTolerance: - Retry, Fallback, Timeout - JSF + PrimeFaces - CDI - MicroProfile RestClient - JAX-RS - CDI - JPA - JSON-B - health Quotes
28. Tutorial Session Prerequisites This URL redirects to the Github page containing the tutorial assignments: http://ivo2u.nl/oA Follow these instructions to setup your device for the tutorial: http://ivo2u.nl/oc ...but let’s have a short break first!
29. Tutorial Bonus Assignments Further exploration of possibilities Jakarta EE - Play around with flaky behaviour - Modify/Add Quotes - Explore JSF - https://www.primefaces.org/showcase/ - Add Exception handling - Choose different component for displaying Quotes MicroProfile MicroProfile Fault Tolerance: • Use @CircuitBreaker in hollow-jar-project MicroProfile Metrics: • Add @Counted • Add @Metered MicroProfile Health: • Create a custom HealthCheck Tips: https://start.microprofile.io
30. Thank you for your visiting this tutorial We value your feedback @edwinderks cloudnativesolutions.guru @ivonet ivonet.nl @tozkeles talip.ozkeles@group9.nl