Cloud Foundry Java Client for Fun and Profit!

1. CLOUD FOUNDRY JAVA CLIENT FOR FUN AND PROFIT†
Josh Ghiloni
jghiloni@ecsteam.com
@joshghiloni
†Fun and Profit Not Guaranteed
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3. ABOUT ECS TEAM
Technology consulting company with headquarters in Denver, CO
Founded in 1999
Completed 40+ cloud native development engagements since 2014
Bronze Sponsor, CF Summit
Silver Member, CF Foundation
Sponsor, Colorado CF Meetup
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4. AGENDA
1. What's new in Java 8?
2. Introduction to Project Reactor
3. Interacting with the UAA
4. Interacting with the Cloud Foundry API
5. Interacting with the Firehose
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5. WHAT'S NEW IN JAVA 8?
4 . 1

6. WHAT'S NEW IN JAVA 8?
FUNCTIONAL INTERFACES
public interface Function<T, R> {
R apply(T input);
}
4 . 2

7. WHAT'S NEW IN JAVA 8?
STREAMS
public <T> Stream<T> of(T... items) {
return Arrays.stream(items);
}
4 . 3

8. WHAT'S NEW IN JAVA 8?
4 . 4

9. WHAT'S NEW IN JAVA 8?
LAMBDAS
public List<Integer> squaredIntegers(Integer... ints) {
return Arrays.stream(ints).map((i) -> i * i).collect(Collectors.toList());
}
public List<Integer> positiveIntegers(Integer... ints) {
return Arrays.stream(ints).filter((i) -> i > 0).collect(Collectors.toList());
}
4 . 5

10. INTRODUCTION TO PROJECT
REACTOR
5 . 1

11. INTRODUCTION TO PROJECT REACTOR
Non-blocking API
Compatible with Standard Java Features
Typed sequences
Publisher - Reactive Standard (used for 0 .. N items)
Mono - Used for 0 .. 1 items
Flux - Used for N items
5 . 2

12. INTERACTING WITH THE CLOUD FOUNDRY API
Two global components:
ConnectionContext - Info about foundation
TokenProvider - Authentication information
6 . 1

13. INTERACTING WITH THE CLOUD FOUNDRY API
Client interface:
ConnectionContext - Info about foundation
TokenProvider - Authentication information
UaaClient - Work with the Cloud Foundry UAA
6 . 2

14. INTERACTING WITH THE CLOUD FOUNDRY API
DEMO!
6 . 3

15. INTERACTING WITH THE CLOUD FOUNDRY API
Client interface:
ConnectionContext - Info about foundation
TokenProvider - Authentication information
UaaClient - Work with the Cloud Foundry UAA
CloudFoundryClient - Work with the Cloud Foundry REST API
6 . 4

16. INTERACTING WITH THE CLOUD FOUNDRY API
DEMO!
6 . 5

17. INTERACTING WITH THE CLOUD FOUNDRY API
Client interface:
ConnectionContext - Info about foundation
TokenProvider - Authentication information
UaaClient - Work with the Cloud Foundry UAA
CloudFoundryClient - Work with the Cloud Foundry REST API
DopplerClient - Work with the Cloud Foundry Firehose
6 . 6

18. INTERACTING WITH THE CLOUD FOUNDRY API
DEMO!
6 . 7

19. THANKS!
ANY QUESTIONS?
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