peaker: Ivar Grimstad Eclipse MicroProfile is a collection of community-driven open source specifications that define an enterprise Java microservices platform. This session gives an introduction to Eclipse MicroProfile and the tools available to get started building portable microservices with a minimum of effort. The features of MicroProfile will be in explained in a down-to-earth and easily understandable way.

1. COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0)
!1
Building Interoperable
Microservices
with Eclipse MicroProfile
Ivar Grimstad
Principal Consultant, Cybercom Sweden

2. @ivar_grimstad
https://github.com/ivargrimstad
https://www.linkedin.com/in/ivargrimstad

3. @ivar_grimstad#JakartaEE #EE4J

4. @ivar_grimstad#microservices
Eclipse MicroProfile

5. @ivar_grimstad#microservices

6. @ivar_grimstad#microservices
M
icroProfile
3.0
June
11,2019

7. @ivar_grimstad#microservices
Open Liberty

8. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE
java -jar dukes.jar

9. @ivar_grimstad#microservices

10. @ivar_grimstad#microservices
Getting Started

11. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

12. @ivar_grimstad#microservices
DEMO

13. @ivar_grimstad#microservices
Microservice Patterns

14. @ivar_grimstad#microservices

15. @ivar_grimstad#microservices
1. Externalised Configuration
2. Health Check API
3. Application Metrics
4. Circuit Breaker
5. Access Token
6. Distributed Tracing

16. @ivar_grimstad#microservices
Externalised Configuration

17. @ivar_grimstad#microservices
How to enable a service to run
in multiple environments
without modification?

18. @ivar_grimstad#microservices
Configuration for MicroProfile

19. @ivar_grimstad#microservices
System Properties
System.getProperties()
Environment Variables
System.getenv()
Application Configuration
META-INF/microprofile-config.properties

20. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

21. @ivar_grimstad#microservices
DEMO

22. @ivar_grimstad#microservices
Health Check API

23. @ivar_grimstad#microservices
How to detect that a running service
instance is unable to handle requests?

24. @ivar_grimstad#microservices
MicroProfile Health API

25. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

26. @ivar_grimstad#microservices
DEMO

27. @ivar_grimstad#microservices
Application Metrics

28. @ivar_grimstad#microservices
How to understand the
behavior of an application and
troubleshoot problems?

29. @ivar_grimstad#microservices
MicroProfile Metrics

30. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

31. @ivar_grimstad#microservices
DEMO

32. @ivar_grimstad#microservices
Circuit Breaker

33. @ivar_grimstad#microservices
How to prevent a network or
service failure from cascading
to other services?

34. @ivar_grimstad#microservices

35. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

36. @ivar_grimstad#microservices
DEMO

37. @ivar_grimstad#microservices
Access Token

38. @ivar_grimstad#microservices
How to communicate the identity
of the requestor to the services
that handle the request?

39. @ivar_grimstad#microservices
Basic Authentication

40. @ivar_grimstad#microservices
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Basic c25vb3850nBhc3M=
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}

41. @ivar_grimstad#microservices
OAuth 2.0

42. @ivar_grimstad#microservices
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Bearer 2YotnF2FEjrlzCsidMWpAA
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Basic c25vb3850nBhc3M=
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Bearer 2YotnF2FEjrlzCsidMWpAA
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}

43. @ivar_grimstad#microservices
JSON Web Token
(JWT)

44. @ivar_grimstad#microservices
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Bearer
eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiQ
mVhcmVyIiwiYXVkIjoic2ltcGxlYXBwIiwic3ViIjoiYm9iIiwidXBuIjo
iYm9iIiwiY3VzdG9tQ2xhaW0iOiJjdXN0b21WYWx1ZSIsImdyb3VwcyI6W
yJhZG1pbiIsInVzZXIiXSwiaXNzIjoiaHR0cDovL29wZW5saWJlcnR5Lml
vIiwiZXhwIjoxNTI1MzM5MjU5LCJpYXQiOjE1MjUyNTI4NTl9.nDDpCR2w
MWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz9vc
ptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowgJHwdvv7hMZvrK1loNrPfb
yv727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1
_y351lp2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5r
m0MMGIuAXdgUiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0
i31YRhLpYHfbzh_NlRrRPjGPNgzOIN1RInwPC8jdg_g
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}

45. @ivar_grimstad#microservices
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Bearer
eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiQ
mVhcmVyIiwiYXVkIjoic2ltcGxlYXBwIiwic3ViIjoiYm9iIiwidXBuIjo
iYm9iIiwiY3VzdG9tQ2xhaW0iOiJjdXN0b21WYWx1ZSIsImdyb3VwcyI6W
yJhZG1pbiIsInVzZXIiXSwiaXNzIjoiaHR0cDovL29wZW5saWJlcnR5Lml
vIiwiZXhwIjoxNTI1MzM5MjU5LCJpYXQiOjE1MjUyNTI4NTl9.nDDpCR2w
MWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz9vc
ptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowgJHwdvv7hMZvrK1loNrPfb
yv727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1
_y351lp2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5r
m0MMGIuAXdgUiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0
i31YRhLpYHfbzh_NlRrRPjGPNgzOIN1RInwPC8jdg_g
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}

46. @ivar_grimstad#microservices
✦Header
✦ JSON, Base64 URL Encoded
✦ Algorithm, Type
✦Payload
✦ JSON, Base64 URL Encoded
✦ Standard + Custom entries
✦Signature
✦ Binary, Base64 URL Encoded
✦ The actual signature

47. @ivar_grimstad#microservices
POST /hello HTTP/1.1
Host: localhost:8080
Authorization: Bearer
eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJ0b2tlbl90eXBlIjoiQ
mVhcmVyIiwiYXVkIjoic2ltcGxlYXBwIiwic3ViIjoiYm9iIiwidXBuIjo
iYm9iIiwiY3VzdG9tQ2xhaW0iOiJjdXN0b21WYWx1ZSIsImdyb3VwcyI6W
yJhZG1pbiIsInVzZXIiXSwiaXNzIjoiaHR0cDovL29wZW5saWJlcnR5Lml
vIiwiZXhwIjoxNTI1MzM5MjU5LCJpYXQiOjE1MjUyNTI4NTl9.nDDpCR2w
MWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz9vc
ptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowgJHwdvv7hMZvrK1loNrPfb
yv727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1
_y351lp2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5r
m0MMGIuAXdgUiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0
i31YRhLpYHfbzh_NlRrRPjGPNgzOIN1RInwPC8jdg_g
User-Agent: HTTPie/0.9.9
Accept: */*
Content-Type: application/json
Content-Length: 26
{“message”:“Hello, Duke!”}

48. @ivar_grimstad#microservices
{ “alg”: “RS256”, “typ”: “JWT}
{
“token-type: “access-token”,
“username”: “duke”,
“scopes”: [
“java”: “everywhere”
],
“exp”: 1474280963,
“iat”: 1474279163
“jti”: “66881b068b249ad9”
}
nDDpCR2wMWsENaDGORQblErOCJ6ii1R-N6iSzVsAz2RoUlvM2PrST2qT6kje-Nz
9vcptbSpOSlF1OuJydvP8Tg3puJKI5vGyL4RMowg-JHwdvv7hMZvrK1loNrPfby
v727L9UwJSZMdzL_sibiXDuj-bIBIr6yGjVF86aQnh-PWBV8HHM1iW8l1_y351l
p2CAPkfjKwLU91iIT1jO1QCwItF8Dv-zAzmhd_rOIF58eB809_5rm0MMGIuAXdg
UiU2bdEJQCkTWJKNNaSu5oddZzlKaCX4hIgBdrVV6447DM0i31YRhLpYHfbzh_N
lRrRPjGPNgzOIN1RInwPC8jdg_g

49. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

50. @ivar_grimstad#microservices
DEMO

51. @ivar_grimstad#microservices
Distributed Tracing

52. @ivar_grimstad#microservices
How to understand the
behavior of an application and
troubleshoot problems?

53. @ivar_grimstad#microservices

54. @ivar_grimstad#MicroProfile #JavaEE #EE4J #JakartaEE

55. @ivar_grimstad#microservices
End-to-End
DEMO

56. @ivar_grimstad#microservices
hello capitalizebirthday
Retry
+
Fallback
Fallback
http://localhost:8181/hello?name=duke
http://localhost:8282/birthday/duke?date=1995-05-23
http://localhost:8080/capitalize/duke
{
name: "Duke",
daysToBirthday: 304,
daysSinceBirthday: 62,
age: 24
}
Duke
Hello Duke! You are 24
years old. It has gone
62 days since your
birthday and it is 304
days left to your
next...
Response Response Response
Ope

57. COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0)
!57
Summary

58. @ivar_grimstad#microservices

59. @ivar_grimstad#microservices
and

60. @ivar_grimstad#microservices
Microservice Architecture
http://microservices.io
Samples
https://github.com/ivargrimstad
Microprofile
http://microprofile.io
Jakarta EE
https://jakarta.ee

61. COPYRIGHT (C) 2019, ECLIPSE FOUNDATION, INC. | MADE AVAILABLE UNDER THE ECLIPSE PUBLIC LICENSE 2.0 (EPL-2.0)
!61
Thank you!