The document discusses Spring Shell, highlighting its benefits for Java software engineers, including local and remote execution, and its applications in automation and data analysis. It covers topics such as command definition, parameter handling, and the transition from client to server implementation, along with potential drawbacks like testing and configuration. Resources and links to related projects and demos are also provided.

1. Spring shell for everyone
Ihor Banadiga

2. Ihor Banadiga
JavaDay Lviv, CoffeeJug,
Morning@Lohika, Devoxx
Ukraine, Kotlin Night Kyiv
2
Java Software Engineer at Lohika
#jdo_shell

3. Who don’t?
3

4. Who did?
4

5. Who do?
5

6. Who done?
6

7. Agenda
● How to start
● Resolve base problems
● Remote usage
● Build “muscles”
7

8. What is shell?
8
Before we start...

9. Shell
● sh
● bash
● zsh
9
● aws-shell
● mysql
● mongo

10. Why?
10
One more question...

11. Why?
● Local execution
● Remote execution
● Complete solution
● Professional users
● Accessibility
11

12. Why me?
12
One more question...

13. My case
● Many services
● Background processing
● Data analysis / automatization
● No UI
● Operators / Devops
● Limited time
13

14. Spring Shell
14
Spring framework

15. Coding session
15
Client bank
#jdo_shell

16. 16
Summary
Client bank coding session

17. Summary
● Define commands
● Define parameters
● Entering extra params
● Group commands
● Commands availability
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● Customize prompt
● Autocompletion
● Converter implementation
● Help generation

18. Looks cool
18
No one is perfect

19. What are the cons?
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20. Cons
● Testing
● Time to start
● Logging
● Upgrade
● Update
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● Configuration
● Network
● etc

21. How can we deal with it?
21

22. 22
Thin client
Move shell to server

23. Coding session
23
Move client bank to server
#jdo_shell

24. 24
Summary
Client bank on server

25. Summary
● SSH support
● Time to start / Time to connect
● Logs on server
● Upgrade / Update on server
● Configuration
● Network
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● JVM ecosystem
● Post processors
● Actuator as shell
● Testing

26. 26
Question?
Thanks!
#jdo_shell

27. Thanks!
27
Slide Code
#jdo_shell

28. Links
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● Slide https://www.slideshare.net/IhorBanadiga/spring-shell-for-everyone
● Demo https://github.com/banadiga/shell-application
● Client bank https://github.com/banadiga/client-bank
● Spring shell project https://projects.spring.io/spring-shell/
● SSH shell https://github.com/fonimus/ssh-shell-spring-boot