This document summarizes a presentation about how the large open source Firefox OS project works. It discusses fundamentals like version control using Mercurial and Git, issue tracking with Bugzilla, continuous integration using Travis and TBPL/Jenkins for daily builds. It also covers collaboration tools like Wikis, emails, and video conferencing used by the geographically distributed team. The presentation aims to provide insights for other projects on building an open source project at Mozilla's scale.

1. Firefox OS - How Large
Open Source Project
works
gasolin @ coscup 2014
http://www.gasolin.idv.tw

2. About Me:
● Mozilla Firefox OS front-end developer
● GDG Taipei Organizer
● Android and Firefox OS book author
http://www.gasolin.idv.tw

3. 了解
Firefox OS 專案發展狀況
why and how we make Firefox OS

4. 能用
有什麼做法或工具
What can takeout to my project?

6. https://www.mozilla.org/zh-TW/about/history/

8. http://intangible.ca/2014/03/11/infographic-our-2013-fundraising-success/

9. https://blog.mozilla.org/blog/2013/12/16/mozilla-in-2013/

10. https://blog.mozilla.org/blog/2014/07/17/firefox-os-ecosystem-shows-strong-momentum-and-
expands-across-new-devices-markets-and-categories/

11. Why we make Firefox OS?
為何

12. 愛自幹的一
群人
reinvent the wheel

13. 改善
web engines are faster & powerful
then ever!
benefit all platform users

14. 選擇
Not-locked in a proprietary ecosystem
search, open, use web or webapp
by your will

15. 擁有
True Open Source, include moz-services
CAN host your app in web site or marketplace

16. Carriers and Chip vendors

17. 影響
Make things that improve Million
people’s life

18. How we
work?

20. Fundamentals to make it happen...
● Version Control
○ Mercurial
○ Git - github
● Issue Tracking
Bugzilla
Code Review per commit
● Continue Integration
○ Per commit test - Travis
■ lint, unittest, integration test
○ Daily Build - TPBL, Jenkins
Reference

21. …...
zzZ..

22. 12問
Let’s ask some questions
That you can ask for your project

23. 1. 有沒有在面試
時要求面試對象
寫程式?

24. Patch please (It’s open source)
http://bugzil.la/877972

25. 2.程式人員有
沒有安靜的工
作環境

27. 3.你有沒有用
市面上最好的
工具

28. Firefox Nightly come with Web IDE

29. Debugging OS/App on browser !!!

30. 4. 你有使用
版本控制系統嗎?

31. https://github.com/mozilla-b2g/gaia/
https://github.com/mozilla/gecko-dev/

32. 5. 你會把問題都修
好之後再繼續寫新
功能嗎?

33. Version Control’s
Tech Tree
• Patch Review
• Close tree
• Style Check

34. 防火長城
per patch review

35. send PR for review
Assign proper reviewer from Module owner list
https://wiki.mozilla.org/Modules/FirefoxOS

36. 作風檢查
Style Check for js, cs, json linters
pre commit hook
Rely on lint tools, not humans

37. 和諧
Close Tree while serious CI fail
happens

38. 6.你有沒有
問題追蹤資料庫?

39. Bugzilla http://mzl.la/1mXUxGM
over 1’040’000 bugs reported til today

40. Fire a bug

41. Issue Tracking Tech Tree
• Feature requests
• Bug report
• Scheduling
• Blocking Bugs

42. 7.你能用一個
步驟建出所有
結果嗎?

43. Add Pull Request,
all tests run automatically

44. 8.你有沒有
測試人員?

46. Bug Bash
at every feature complete

47. 警長
Backout commits while CI fail happens

48. 9. 你有每日構建版本
（Daily Build）嗎?

49. TBPL
+ Jenkins
https://github.com/Mozilla-TWQA/B2G-flash-tool
https://tbpl.mozilla.org/
Auto flash script

50. Continue Integration
Tech Tree
• unit test/functional test
• per pull request
• Daily Build

51. 10. 你有一份
最新時程表嗎?

52. Check wikipedia
http://en.wikipedia.org/wiki/Firefox_OS

53. https://wiki.mozilla.org/B2G/Roadmap
check Mozilla wiki

54. check burndown chart
http://charts.paas.allizom.org/fxos/burndown-release.html

55. Train Model
http://bit.ly/1caPWsG
Arrive every 3 mont

56. Train Model: Release every 3 month
● Time bound: Development + Release
● Agile for change
● Plan -> Feature complete -> Bug Fixing ->
Release Engineering
1.2 Plan
1.2 Dev
1.2 Fix
1.2 Release
PM/ePM
/eM
ePM/eM/
Engineer
QA/
Engineer
QA/
L10n/Cariier
Test
1.3 Plan
1.3 Dev
1.3 Fix
1.3 Release
1.1 Release
http://mozilla.github.io/process-releases/draft/development_specifics/

57. 11.你有規格嗎？

58. 交流
UI specs, feature planing
in
Box, Dropbox Google Doc, Bugzilla

59. Collaboration Pad
Tech Tree
• Wiki/Etherpad
• Email/IRC/IM
• MDN

60. 共筆
Wiki + Etherpad

61. 及時
Email, IRC &IM,
on time

62. Discussion
IRC: #b2g, #gaia (english)
#mozilla-taiwan (chinese)
Maillist: https://lists.mozilla.
org/listinfo/dev-gaia
Reference

63. 見面
Video conference,
face-to-face

64. 12. 有沒有做走廊使用性
hallway usability測試?

65. Settings > Improve Firefox OS >
Submit your Feedback

66. Settings > Improve Firefox OS >
Submit your Feedback
https://input.mozilla.org/zh-TW/?product=Firefox%20OS

67. #約耳測試
• 你有使用原始碼版本控制系統嗎 ?
• 你能用一個步驟建出所有結果嗎 ?
• 你有每日構建版本（ Daily Build）嗎?
• 你有沒有問題追蹤資料庫 ?
• 你會把問題都修好之後再繼續寫新功能嗎
• 你有一份最新時程表嗎
• 你有規格嗎
• 程式人員有沒有安靜的工作環境
• 你有沒有用市面上最好的工具
• 你有沒有測試人員
• 有沒有在面試時要求面試對象寫程式
• 有沒有做走廊使用性 hallway usability測試

68. 約耳測試
http://chinesetrad.joelonsoftware.
com/Articles/TheJoelTest.html

69. What can
takeout to my
projects?

70. Unlock more achievements!
• Collaboration pad
• Version Control (hg & git)
• Issue Tracking (Bugzilla)
• Continue Integration (TBPL, Travis)

71. Learn more about
Firefox OS
https://developer.mozilla.orgAction

72. Web App Developer Hub
https://marketplace.firefox.com/developers/
Action

73. Localization
https://wiki.mozilla.org/L10n:Contribute
Action

74. good first bug
http://mzl.la/14IUpTh
Action

75. #gaiafromabove

76. Thanks

77. Earn your first commit
http://codefirefox.com/videos
Action