Meet SnoopEE - the Lean and Simple Discovery Service for Java EE @ jPrime 2016

A common pattern when building systems based on distributed services is Service Discovery. And that is where SnoopEE comes in. It is a 100% Java EE alternative to solutions like Spring Cloud Eureka. Just as simple and at least as powerful. And no need for 3rd party frameworks. The slides for this session will be backed up by a demo to show key concepts and tools for packaging, registering and discovering Java EE based micro services. The demo will use core technologies of the Java EE platform, such as CDI Extensions, WebSockets, JAX-RS and even use MVC 1.0 (JSR 371).

Transcript

1. @ivar_grimstad #SnoopEE - jPrime 2016 Meet SnoopEE Ivar Grimstad Principal Consultant, Cybercom Sweden The Lean and Simple Discovery Service for Java EE
2. @ivar_grimstad #SnoopEE - jPrime 2016 @ivar_grimstad https://github.com/ivargrimstad https://www.linkedin.com/in/ivargrimstad http://lanyrd.com/profile/ivargrimstad/
3. @ivar_grimstad #SnoopEE - jPrime 2016 Agenda Microservices Service Discovery SnoopEE - a Discovery Service for Java EE
4. @ivar_grimstad #SnoopEE - jPrime 2016 Microservices
5. @ivar_grimstad #SnoopEE - jPrime 2016 Monolithic Architecture Monolithic Application
6. @ivar_grimstad #SnoopEE - jPrime 2016 Monolithic Architecture
7. @ivar_grimstad #SnoopEE - jPrime 2016 Monolithic Architecture Monolithic Application
8. @ivar_grimstad #SnoopEE - jPrime 2016 Microservice Architecture Service A Service B Service C Application Call A Call B Call C
9. @ivar_grimstad #SnoopEE - jPrime 2016 Microservice Architecture
10. @ivar_grimstad #SnoopEE - jPrime 2016 Microservice Architecture Service A Service B Service C Application Call A Call B Call C
11. @ivar_grimstad #SnoopEE - jPrime 2016 Packaging
12. @ivar_grimstad #SnoopEE - jPrime 2016 Containers
13. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Application
14. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Java EE Container Application
15. @ivar_grimstad #SnoopEE - jPrime 2016
16. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Application Hardware Operating System JVM Java EE Container Application
17. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Application Hardware Operating System JVM Java EE Container Application
18. @ivar_grimstad #SnoopEE - jPrime 2016 Discovering Microservices
19. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application Call A Call B Call C
20. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application Discovery Service Register Register Register
21. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application Discovery Service Register Register Register Lookup A Call A
22. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application Discovery Service Register Register Register Lookup B Call B
23. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application Discovery Service Register Register Register Lookup B
24. @ivar_grimstad #SnoopEE - jPrime 2016 Introducing SnoopEE
25. @ivar_grimstad #SnoopEE - jPrime 2016 Background
26. @ivar_grimstad #SnoopEE - jPrime 2016 Inspired by Eureka
27. @ivar_grimstad #SnoopEE - jPrime 2016 Service B Service A Service C Application Eureka Discovery Service Register Register Register @EnableEurekaClient Hardware Operating System JVM Service A Hardware Operating System JVM Service B Hardware Operating System JVM Service C
28. @ivar_grimstad #SnoopEE - jPrime 2016 @SpringBootApplication @EnableEurekaClient public class Application { public static void main(String[] args) throws Exception { SpringApplication.run(Application.class, args); } }
29. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Service C Hardware Operating System JVM Service B Hardware Operating System JVM Service A Application SnoopEE Discovery Service Register Register Register Hardware Operating System JVM Java EE Container Service A Hardware Operating System JVM Java EE Container Service B Hardware Operating System JVM Java EE Container Service C @EnableSnoopClient
30. @ivar_grimstad #SnoopEE - jPrime 2016 Hardware Operating System JVM Java EE Container Service A Hardware Operating System JVM Java EE Container Service C Hardware Operating System JVM Java EE Container Service B Application SnoopEE Discovery Service Register Register Register @EnableSnoopClient Hardware Operating System Service C Hardware Operating System JVM Service B Future<Snoop>
31. @ivar_grimstad #SnoopEE - jPrime 2016 The Philosophy of SnoopEE
32. @ivar_grimstad #SnoopEE - jPrime 2016 Lean Non-intrusive Intuitive Configurable
33. @ivar_grimstad #SnoopEE - jPrime 2016
34. @ivar_grimstad #SnoopEE - jPrime 2016 SnoopEE
 Service Registration
35. @ivar_grimstad #SnoopEE - jPrime 2016 @EnableSnoopClient(serviceName="hello")
36. @ivar_grimstad #SnoopEE - jPrime 2016 @EnableSnoopClient(name = "hello") @ApplicationPath("api") public class ApplicationConfig extends Application { }
37. @ivar_grimstad #SnoopEE - jPrime 2016 SnoopEE
 Service Lookup
38. @ivar_grimstad #SnoopEE - jPrime 2016 @Snoop(serviceName="hello")
39. @ivar_grimstad #SnoopEE - jPrime 2016 @Inject @Snoop(serviceName = "hello") private SnoopServiceClient helloService;
40. @ivar_grimstad #SnoopEE - jPrime 2016 SnoopEE Service Consumption
41. @ivar_grimstad #SnoopEE - jPrime 2016 SnoopServiceClient
42. @ivar_grimstad #SnoopEE - jPrime 2016 @Inject @Snoop(serviceName = "hello") private SnoopServiceClient helloService;
43. @ivar_grimstad #SnoopEE - jPrime 2016
44. @ivar_grimstad #SnoopEE - jPrime 2016 String helloResponse = helloService.simpleGet("hello") .filter(r -> r.getStatus()==200) .map(r -> r.readEntity(String.class)) .orElse("goodbye");
45. @ivar_grimstad #SnoopEE - jPrime 2016 SnoopEE Configuration
46. @ivar_grimstad #SnoopEE - jPrime 2016 System Properties Environment Variables Application Configuration (snoop.yml)
47. @ivar_grimstad #SnoopEE - jPrime 2016 snoop.yml snoop: host: http://localhost port: 8080 serviceRoot: snoop-hello-service/api snoopService: 192.168.59.103:8081/snoop-service/
48. @ivar_grimstad #SnoopEE - jPrime 2016 The SnoopEE Protocol
49. @ivar_grimstad #SnoopEE - jPrime 2016 Service A Service B Service C Application SnoopEE Discovery Service Call Call Call Lookup http:// Register ws:// Register ws:// Register ws://
50. @ivar_grimstad #SnoopEE - jPrime 2016 DEMO !
51. @ivar_grimstad #SnoopEE - jPrime 2016 Hello World Micro Hello World SnoopEE Discovery Service Register Register Register Lookup Call Call Call
52. @ivar_grimstad #SnoopEE - jPrime 2016 Hello World Hello World SnoopEE Discovery Service Register Register Lookup Call Call Call Micro
53. @ivar_grimstad #SnoopEE - jPrime 2016 Hello Swarm Micro Hello World SnoopEE Discovery Service Register Register Register Lookup Call Call Call
54. @ivar_grimstad #SnoopEE - jPrime 2016 Summary
55. @ivar_grimstad #SnoopEE - jPrime 2016 Getting Started with SnoopEE
56. @ivar_grimstad #SnoopEE - jPrime 2016 1. Add Maven Dependency <dependency> <groupId>eu.agilejava</groupId> <artifactId>snoop</artifactId> <version>${snoop.version}</version> </dependency> <dependency> <groupId>eu.agilejava</groupId> <artifactId>snoop</artifactId> <version>1.3.0</version> </dependency>
57. @ivar_grimstad #SnoopEE - jPrime 2016 2. SnoopEE-Enable the Service @EnableSnoopClient(serviceName="hello")
58. @ivar_grimstad #SnoopEE - jPrime 2016 3. Configure the Service snoop: host: http://localhost port: 8080 serviceRoot: snoop-hello-service/api snoopService: 192.168.99.100:8081/snoop-service/
59. @ivar_grimstad #SnoopEE - jPrime 2016 4. Configure the Application snoop: snoopService: 192.168.99.100:8081/snoop-service/
60. @ivar_grimstad #SnoopEE - jPrime 2016 Is SnoopEE a Load Balancer?
61. @ivar_grimstad #SnoopEE - jPrime 2016 Service A1 Service A2 Service C Application SnoopEE Discovery Service Register Register Lookup Call Call Load Balancer
62. @ivar_grimstad #SnoopEE - jPrime 2016 Resources SnoopEE http://snoopee.agilejava.eu Samples https://github.com/ivargrimstad/snoop-samples Docker Images https://hub.docker.com/u/ivargrimstad
63. @ivar_grimstad #SnoopEE - jPrime 2016 @EnableSnoopClient
64. @ivar_grimstad #SnoopEE - jPrime 2016 www.cybercom.com