Framework Oriented Programming - Mobilization.pl

Transcript

1. Framework Oriented Programming @pepibumur / pepibumur@gmail.com
2. Hi! ! Pedro iOS Developer at SoundCloud @pepibumur Twitter/GitHub www.ppinera.es
3. Context Motivation How Questions Downsides
5. Things with something in common
6. !"#
9. Boxes Frameworks
10. In computer science, a framework is a collection of implementations of behavior, written in terms of a language, that has a well-defined interface by which the behavior is invoked Wikipedia
11. External Frameworks
13. inhibit_all_warnings! use_frameworks! target 'MyApp' do pod "PureLayout" pod 'FLEX' pod 'DateTools' pod 'Reachability' pod 'RxSwift' pod 'SDWebImage' pod "SDVersion" pod 'BlocksKit' pod 'CTFeedback' pod 'TOWebViewController' pod '1PasswordExtension' pod 'SlackTextViewController' pod 'FeedbackMe' pod 'Localize-Swift' pod 'Smooch' pod 'Fabric' pod 'Crashlytics' pod 'CWStatusBarNotification' pod "ImagePickerSheetController" pod 'KYNavigationProgress' end
14. ! 1 app target + X External frameworks
15. Simple projects
16. Small teams (and not distributed)
17. Only 1-2 platforms ! "
18. !
19. New platforms !"⌚$
30. Simple complex projects
31. Couldn't reuse code scale easily
32. Bigger projects Bigger teams (and also distributed)
33. Conflicts Between teams (Interdependencies)
41. !
42. !
43. Framework Oriented Programming
44. Architectural Approach Modularizing your apps code bases in local and multiplatform frameworks that expose a hookable interface.
45. New platforms/targets Gluing
47. Atomic teams that own frameworks
49. Decide about persistence Decide about patterns Decide about architecture Decide about language
51. Framework Exposes an API
53. Fewer interdependencies Fewer conflicts Fewer bugs
56. How to Setup the project
57. Using CocoaPods Create pods Link the project against them
58. mkdir Frameworks; cd Frameworks; pod lib create Core pod lib create UI pod lib create Player pod lib create Offline
59. Pod::Spec.new do |s| s.name = 'Player' s.dependency 'Core' s.dependency 'UI' end
60. abstract_target 'Frameworks' do pod "Core", :path => "Frameworks/Core" pod "UI", :path => "Frameworks/UI" pod "Player", :path => "Frameworks/Player" pod "Offline", :path => "Frameworks/Offline" # Platforms target "MyApp" target "MyTVApp" target "MyWatchApp" end
61. Manually Creating/Linking
62. Workspace Multiple framework projects Linked/Embedded
66. Multi-Platform Framework # Supported platforms SUPPORTED_PLATFORMS = iphoneos iphonesimulator appletvsimulator appletvos macosx watchsimulator watchos # Valid architectures VALID_ARCHS[sdk=macosx*] = x86_64 VALID_ARCHS[sdk=iphone*] = arm64 armv7 armv7s # Frameworks Search Path LD_RUNPATH_SEARCH_PATHS[sdk=iphone*] = $(inherited) @executable_path/Frameworks @loader_path/Frameworks LD_RUNPATH_SEARCH_PATHS[sdk=macosx*] = $(inherited) @executable_path/../Frameworks @loader_path/../Frameworks LD_RUNPATH_SEARCH_PATHS[sdk=watch*] = $(inherited) @executable_path/Frameworks @loader_path/Frameworks LD_RUNPATH_SEARCH_PATHS[sdk=appletv*] = $(inherited) @executable_path/Frameworks @loader_path/Frameworks
68. Pandora github.com/frameworkoriented/pandora gem install pandora-frameworks pandora create Core org.myorg
69. Questions With answers
70. External dependencies? » Minimize them (DIY) » Most dependent framework, fewer dependencies.
71. CocoaPods/Carthage? » Up to you » Both support local/external dependencies. » Depends on your setup.
72. Static/Dyamic? » Linking: » Static: Compilation time. » Dynamic: Startup time. » Swift only supports dynamic.
73. Linking/Embedding? » Linking "connects" dependencies. » Embedding "copies" them to the target (app)
74. Analyze Existing tools (e.g. CocoaPods) » Reverse engineering.
77. Transitioning from Monolithic? » Start pulling tooling: » API client. » Database wrapper. » Analytics. » Logging » Continue gradually pulling features from the least dependent.
78. How many frameworks? » It depends on your setup » Find the stack that works for you.
79. Freelance Setup
80. Feature Teams Setup
81. Multi-Platform Setup
82. One/Multiple repositories? » One repository » Unless: » Other repository needs a framework. » You make a framework open source.
83. Versioning? » Unified versioning. » Unless different repositories. » Very useful: deprecation macros.
84. Public/Internal/Private? » Internal by default. » Public API. » Restrictive over permissive. » Enforce good practices.
85. Downsides
86. Documentation Not good enough
87. No homogeneity In APIs
88. Macros #if !os(macOS) import AppKit typealias Image = NSImage #else import UIKit typealias Image = UIImage #end
89. Xcode Has a long way to go ! "
90. Conclussions » Fewer conflicts in big teams. » Easy multiplatfom apps. » Aims good practices (API). Do it if only if your project needs it
91. References » frameworkoriented.io » Building Modern Frameworks » How to create a Framework for iOS » Framework vs Library » Static and Dynamic libraries » The Unofficial Guide to xcconfig files
92. Thanks Questions? #yatusabes ! @pepibumur / pepibumur@gmail.com Photos from Unsplash Slides bit.ly/frameworkoriented