1. Opening Opensourcethe Jenkins Way BreizhCamp 17 juin 2011 ©2011 Cloud Bees, Inc. All Rights Reserved

3. New-Bee at

4. (ex-)CommitterMaven

5. JUG-Leader©2011 CloudBees, Inc. All Rights Reserved

6. Jenkins ? ©2011 CloudBees, Inc. All Rights Reserved

8. Release management

9. Continuousdeployment

10. Business Intelligence …©2011 CloudBees, Inc. All Rights Reserved

11. Hudson / Jenkins : the fork ©2011 CloudBees, Inc. All Rights Reserved

12. ©2011 CloudBees, Inc. All Rights Reserved User choosed Jenkins 13 000 downloads / week 1 500 member on jenkins-users 4 000 followers @jenkinsci

13. 900 members on jenkins-dev 48 active contributors, 94 publicized 170 Pull-requestsfromoccasionalcontributors 11,3 changes per release(6,7 before the fork) … as Developersdid ©2011 CloudBees, Inc. All Rights Reserved

14. OpenSource model How to attract new contributors ? ©2011 CloudBees, Inc. All Rights Reserved

15. Voice committer Committer Contributor Supporting User User Standard OSS model « meritocratic » ©2011 CloudBees, Inc. All Rights Reserved

16. Use the tool Contribute to user-forum Getfamiliarwith the code Contribute to dev-forum Fix bugs and post patches Be nicewitheverybody Do some lobbying How to become a Committer … ©2011 CloudBees, Inc. All Rights Reserved

17. Difficult to getinto the code Difficult to getspare time Difficult to fix bug or add new features Laborious to create and maintain patches Frustrating to wait for approval How manytalentuousguys do weloosehere ? In practice… ©2011 CloudBees, Inc. All Rights Reserved

18. Mypersonalexperience ©2011 CloudBees, Inc. All Rights Reserved Motivation (# of contributions) (neveroccurred)

19. Rule #1 : lower the contribution barrier The Jenkins-way ©2011 CloudBees, Inc. All Rights Reserved

20. Want to contribute ? ©2011 CloudBees, Inc. All Rights Reserved Ask for commit

21. « Withgreat power, comesgreatresponsibility » Self-censoredcontributors ©2011 CloudBees, Inc. All Rights Reserved

22. Discover a regression : revert Test harness to the rescue(stillmuch to do there) Possible if therewas few changes between releases ! Hey, thisis SCM roleafter all ! ©2011 CloudBees, Inc. All Rights Reserved

23. Rule #2 : Release often (even more) The Jenkins-way ©2011 CloudBees, Inc. All Rights Reserved

24. One release per week Few changes between releases Easy to rollbackwhensomethingisbroken + « stable but older » branch (3 month) withCritical bug fixes only Jenkins releases ©2011 CloudBees, Inc. All Rights Reserved

25. OpenSource model How to merge contributions ? ©2011 CloudBees, Inc. All Rights Reserved

26. Contributormayask for code review Contribution mayrequire few changes beforebeeingapplied Wedon’twant to discouragecontributors WTF ? ©2011 CloudBees, Inc. All Rights Reserved

27. Diff format isdefinitly not a sexy format for humans > +@Deprecated > +public class Base64 > +{ > + public Base64() > + { > + super(); Doesitreallyneed to call Object.super(). Can we not leaveitwith the default constructor as Plexus' original has? > + } Diff format (SVN patch) ©2011 CloudBees, Inc. All Rights Reserved

28. GitHub pull request ©2011 CloudBees, Inc. All Rights Reserved

29. Rule #3 : Tools matter, use the right ones The Jenkins-way ©2011 CloudBees, Inc. All Rights Reserved patch Pull request + Commit pattern

30. Origin of the Hudson/Jenkins fork(java.netoutage) 200 forks on Jenkins GitHub repo ! 170 pull requests Jenkins atGitHub ©2011 CloudBees, Inc. All Rights Reserved

31. Opensource model Embrace new features ©2011 CloudBees, Inc. All Rights Reserved

32. 250 plugins !(maven plugin is the only one in core) Evengrowingecosystem Contributorcan focus on some plugin thatbringthem value daily Modular design ©2011 CloudBees, Inc. All Rights Reserved

33. Extension point withruntimediscovery Need to plugsomewhere in Jenkins ? add a new extension point Someidea for a new plugin ?  add for a repo on github/jenkins-ci Extensibility ©2011 CloudBees, Inc. All Rights Reserved

34. Rule #6 : design for extensibility  Multiple technical solutions (incl. @Inject) The Jenkins way ©2011 CloudBees, Inc. All Rights Reserved

35. OpenSource model How to talk together ? ©2011 CloudBees, Inc. All Rights Reserved

36. User forum Dev forum Private forum (+ lobbying) Multiple discussion levels ©2011 CloudBees, Inc. All Rights Reserved

38. All discussions are public On jenkins-dev On irc #jenkinsci Meeting bi-weekly on irc Logged by irc-bot for lateravailabilityhttp://meetings.jenkins-ci.org/jenkins transparency ©2011 CloudBees, Inc. All Rights Reserved

39. Rule #4 : Makethings transparent The Jenkins way ©2011 CloudBees, Inc. All Rights Reserved

40. OpenSource model Who’s the boss ? ©2011 CloudBees, Inc. All Rights Reserved

41. Right, projectneedssome sort of lead… but not a despot ! « BenevolentDictator For Life »-syndrom Lead ©2011 CloudBees, Inc. All Rights Reserved

42. Highly active contributor Good knowledge of projecthistory Good technicalskills Visionary Newbie-compliant Not egocentric Lead must be … ©2011 CloudBees, Inc. All Rights Reserved

43. Kohsuke Kawaguchi Andrew Bayer Dean Yu (all from != companies) And discuss in public ! Lead-commiteeissafer ©2011 CloudBees, Inc. All Rights Reserved

44. Rule #5 : choose a good Lead model  focus first on building a community The Jenkins way ©2011 CloudBees, Inc. All Rights Reserved

45. Opensource (x)or Business ? ©2011 CloudBees, Inc. All Rights Reserved

46. ( ©2011 CloudBees, Inc. All Rights Reserved

47. CloudBees relation with Jenkins ? ©2011 CloudBees, Inc. All Rights Reserved

48. Nectar : enhanced & supported Jenkins DEV@Cloud : hosted software factory RUN@Cloud : Java PaaS Public : hosted by Amazon Private : on yourownvirtualized infra CloudBees in 5 words ©2011 CloudBees, Inc. All Rights Reserved

49. KK is a CloudBeesemployee… but CloudBeesengaged to neverinterferewith Jenkins Lead committee DEV@Cloudisawesomethanks to active opensourceecosystem ! CloudBees vs OpenSource ©2011 CloudBees, Inc. All Rights Reserved

50. CloudBeescontributesbugfixes to OSS CloudBees vs OpenSource ©2011 CloudBees, Inc. All Rights Reserved

52. Virtualisation, auto-scaling, hypervisorintegration

53. Jobs classification (folders)

54. Advanced Backup

55. …Nectar value for entreprises ©2011 CloudBees, Inc. All Rights Reserved

56. Jenkins cluster Multi-tenant masters Pool of slaves Automaticprovisionning On phisical or virtual machines Centralised management (plugins, upgrades, default config…) DEV@CloudPrivate Edition ©2011 CloudBees, Inc. All Rights Reserved

57. Thanks to flexible Jenkins model Easiest maintenance Easiest contributions to oss All thosesfeatures are Plugins ! ©2011 CloudBees, Inc. All Rights Reserved

58. ) ©2011 CloudBees, Inc. All Rights Reserved

59. Does Jenkins model applyelsewhere ? ©2011 CloudBees, Inc. All Rights Reserved

60. I’mtrying to for GWT-maven-plugin Does Jenkins model applyelsewhere ? ©2011 CloudBees, Inc. All Rights Reserved

61. #1 : lower the contribution barrierjustask to join the team ! #2 : release oftenone release per month #3 : toolsmattermovedfromcodehaussvn to GitHub #4 : makeit transparenteverythinghappens on googlegroups #5 : choose a good lead-modelmyself + Olivier Lamy, may change … #6 : design for extensibilitymore investigation requiredhere Applyingrules ©2011 CloudBees, Inc. All Rights Reserved

63. encouraged to contribute,

64. added to team,

65. theyfixed issues by themself !Salvador Diaz to analyse Pull Request Pierre-Yves Ricaucommitted 5 fixes Doesitwork ? ©2011 CloudBees, Inc. All Rights Reserved

66. Q&A Thankyou ©2011 CloudBees, Inc. All Rights Reserved