Scaling CocoaPods

A lightning talk given at Square's OSCON party

Transcript

1. Scaling CocoaPods Samuel Giddins Scaling CocoaPods @ Square 1
2. Samuel Giddins Mobile Developer Experience @ Square CocoaPods Core Contributor Scaling CocoaPods @ Square 2
3. Mobile Developer Experience Scaling CocoaPods @ Square 3
4. Mobile Developer Experience ➡ Owns the build system, dependency manager, interface with CI Scaling CocoaPods @ Square 3
5. Mobile Developer Experience ➡ Owns the build system, dependency manager, interface with CI ➡ Maintains the (open source) tools used to build the app Scaling CocoaPods @ Square 3
6. Mobile Developer Experience ➡ Owns the build system, dependency manager, interface with CI ➡ Maintains the (open source) tools used to build the app ➡ Keeps developers as productive as possible Scaling CocoaPods @ Square 3
7. Mobile Developer Experience ➡ Owns the build system, dependency manager, interface with CI ➡ Maintains the (open source) tools used to build the app ➡ Keeps developers as productive as possible ➡ Cross platform: iOS & Android Scaling CocoaPods @ Square 3
8. Mobile Developer Experience ➡ Owns the build system, dependency manager, interface with CI ➡ Maintains the (open source) tools used to build the app ➡ Keeps developers as productive as possible ➡ Cross platform: iOS & Android ➡ Develops CocoaPods features Scaling CocoaPods @ Square 3
9. CocoaPods @ Square Scaling CocoaPods @ Square 4
10. CocoaPods @ Square ➡ 265 total pods Scaling CocoaPods @ Square 4
11. CocoaPods @ Square ➡ 265 total pods ➡Pods directory is 1005 MB Scaling CocoaPods @ Square 4
12. CocoaPods @ Square ➡ 265 total pods ➡Pods directory is 1005 MB ➡Over 10,000 source files Scaling CocoaPods @ Square 4
13. CocoaPods @ Square ➡ 265 total pods ➡Pods directory is 1005 MB ➡Over 10,000 source files ➡ Swift, Objective-C Scaling CocoaPods @ Square 4
14. CocoaPods @ Square ➡ 265 total pods ➡Pods directory is 1005 MB ➡Over 10,000 source files ➡ Swift, Objective-C ➡ Dynamic Frameworks, Static Libraries, Static Frameworks Scaling CocoaPods @ Square 4
15. CocoaPods @ Square ➡ 265 total pods ➡Pods directory is 1005 MB ➡Over 10,000 source files ➡ Swift, Objective-C ➡ Dynamic Frameworks, Static Libraries, Static Frameworks ➡ Monorepo & Multirepo Scaling CocoaPods @ Square 4
16. CocoaPods @ Square is CocoaPods @ Scale Scaling CocoaPods @ Square 5
17. CocoaPods at home in a monorepo Generating a scratch workspace for a single pod $ pod gen Frameworks/SquareUIComponents --auto-open Describing tests in a podspec Pod::Spec.new do |s| s.test_spec 'Tests' do |ts| ts.source_files = 'Tests/**/*.{h,m}' end end Scaling CocoaPods @ Square 6
18. Automation Removing the depending on the open-source specs repo $ pod whitelist NAME VERSION Whitelists a (pod, version) tuple for internal Square use Automatically generating pre-built binary pods on CI $ pod bin NAME.podspec [ARTIFACT_REPO_URL] Converts the provided `NAME.podspec` into a binary version. The process includes, installing a sandbox, building the sandbox using release configuration for both device and simulator, packing the output and generate a new podspec that uses `ARTIFACT_REPO_URL` as the source. The generated podspec is also validated. Scaling CocoaPods @ Square 7
19. CocoaPods Performance Scaling CocoaPods @ Square 8
20. CocoaPods Performance ➡ Lots of profiling with rbspy Scaling CocoaPods @ Square 8
21. CocoaPods Performance ➡ Lots of profiling with rbspy ➡ Resolver refactoring to make graph traversal not take forever Scaling CocoaPods @ Square 8
22. CocoaPods Performance ➡ Lots of profiling with rbspy ➡ Resolver refactoring to make graph traversal not take forever ➡ Build setting generation rewrite to memoize everything Scaling CocoaPods @ Square 8
23. Investment in Monitoring Scaling CocoaPods @ Square 9
24. Investment in Monitoring ➡ chronometer to instrument method calls Scaling CocoaPods @ Square 9
25. Investment in Monitoring ➡ chronometer to instrument method calls ➡ Log durations to in-house logging system Scaling CocoaPods @ Square 9
26. Investment in Monitoring ➡ chronometer to instrument method calls ➡ Log durations to in-house logging system ➡ Roll up into dashboards visible to the entire organization Scaling CocoaPods @ Square 9
27. Investment in Monitoring Scaling CocoaPods @ Square 10
28. Ownership of our Destiny Scaling CocoaPods @ Square 11
29. Ownership of our Destiny ➡ The team owns our use of CocoaPods, not any individual contributors Scaling CocoaPods @ Square 11
30. Ownership of our Destiny ➡ The team owns our use of CocoaPods, not any individual contributors ➡ No forks, few hacks, no helplessness Scaling CocoaPods @ Square 11
31. Ownership of our Destiny ➡ The team owns our use of CocoaPods, not any individual contributors ➡ No forks, few hacks, no helplessness ➡ Open Source sharing expertise with therest of the industry Scaling CocoaPods @ Square 11
32. Continuous Re-Evaluation Scaling CocoaPods @ Square 12
33. Continuous Re-Evaluation ➡ Even though we have core contributors, we're open to not using CocoaPods Scaling CocoaPods @ Square 12
34. Continuous Re-Evaluation ➡ Even though we have core contributors, we're open to not using CocoaPods ➡ Taking as many lessons as possible from other tools, such as Buck and Bazel Scaling CocoaPods @ Square 12
35. Continuous Re-Evaluation ➡ Even though we have core contributors, we're open to not using CocoaPods ➡ Taking as many lessons as possible from other tools, such as Buck and Bazel ➡ CocoaPods is a tool, tools are replaceable. Our expertise is forever. Scaling CocoaPods @ Square 12
36. CocoaPods: Scaled? Scaling CocoaPods @ Square 13
37. CocoaPods: Scaled? Scaling CocoaPods @ Square 14
38. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over Scaling CocoaPods @ Square 14
39. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods Scaling CocoaPods @ Square 14
40. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods ➡ Development has internal ownership (my team!) Scaling CocoaPods @ Square 14
41. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods ➡ Development has internal ownership (my team!) ➡ Performance has improved slightly, with a massive increase in: Scaling CocoaPods @ Square 14
42. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods ➡ Development has internal ownership (my team!) ➡ Performance has improved slightly, with a massive increase in: ➡features Scaling CocoaPods @ Square 14
43. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods ➡ Development has internal ownership (my team!) ➡ Performance has improved slightly, with a massive increase in: ➡features ➡# of modules Scaling CocoaPods @ Square 14
44. CocoaPods: Scaled? ➡ Last year's crisis of confidence is over ➡ We've onboarded 2 new people to contribute to CocoaPods ➡ Development has internal ownership (my team!) ➡ Performance has improved slightly, with a massive increase in: ➡features ➡# of modules ➡amount of code managed by CocoaPods Scaling CocoaPods @ Square 14
45. CocoaPods: Scaled @segiddins MDX @ Square Scaling CocoaPods @ Square 15