Refactor Eclipse-specific tooling into language servers

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1. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Refactor Eclipse-specific tooling into language servers Martin Lippert @martinlippert

2. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Language Server Protocol 2

3. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 3 https://code.visualstudio.com/images/2016_06_27_language-server-protocol.png

4. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 4 https://code.visualstudio.com/images/2016_06_27_language-server-sequence.png

5. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Our Background 5

6. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 6 at least 2 more… Cloud Foundry Manifest Files Concourse CI Pipeline Manifests BOSH Deployment Manifest Files

7. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Refactoring existing plugins for Eclipse 7

8. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Plugin 8 My Plugin JVM Equinox OSGi Runtime Eclipse UI Plugin JDT Core JDT UI Core Resources Plugin Server Core

9. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

   Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ My Language Server JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM (?) Files LSP

10. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 0 My Language Server Files

11. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy A 11

12. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Plugin 12 My Plugin JVM Equinox OSGi Runtime Eclipse UI Plugin JDT Core JDT UI Core Resources Plugin Server Core

13. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 13 My Plugin JVM Equinox OSGi Runtime JDT Core Core Resources Server Core Language Server LSP Connector

14. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy A • used by jdt.js (the Java Language Server) • pros: • re-use as much as possible • easy to adopt fixes/changes in components • same structure than before • cons: • probably more heavyweight • need to replace dependencies to UI 14

15. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy B 15

16. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Plugin 16 My Plugin JVM Equinox OSGi Runtime Eclipse UI Plugin JDT Core JDT UI Core Resources Plugin Server Core

17. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Third Party Lib Third Party Lib 17 My Plugin JVM Language Server LSP Connector

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    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy B • used by our language servers • pros: • more lightweight • use small third-party libs of your choice • cons: • most likely re-write code • need to replace dependencies to UI • you “own“ probably more code 18

19. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ What about the client side? 19

20. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy A 20

21. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Plugin 21 My Plugin JVM Equinox OSGi Runtime Eclipse UI Plugin JDT Core JDT UI Core Resources Plugin Server Core

22. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 2 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files My Plugin

23. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Core 3 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files UI

24. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Core 4 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files LSP UI

25. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy A • pros: • frond-end experience close to before the refactoring • re-use of UI-specific code of the plugin • cons: • need to write glue code on the client side • take async nature into account might be different, if UI was not designed for that before • you have to keep implementing the client and the server side 25

26. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy B 26

27. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Plugin 27 My Plugin JVM Equinox OSGi Runtime Eclipse UI Plugin JDT Core JDT UI Core Resources Plugin Server Core

28. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 8 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files My Plugin

29. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 9 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files Core UI

30. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 0 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files LSP LSP4E Core

31. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 1 JVM Equinox OSGi Runtime Eclipse UI JDT Core JDT UI Core Resources JVM Files Generic Editor LSP4E Core

32. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Strategy B • pros: • nearly no work on the UI side • generic editor and LSP4E is a great combination • cons: • less control over the UX • things might look different • if you need extra UI, you end up with a combination of A & B 32

33. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Some final thoughts • great to have separate language server features • update language servers individually is awesome • separation might be hard • quite a bit of work without short-term value • pays off in the long-term 33

34. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software,

    Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ Thanks!!! 34 Download STS from: https://spring.io/tools Ask questions on Stack Overflow: http://stackoverflow.com/questions/tagged/spring-tool-suite Report issues: https://github.com/spring-projects/spring-ide