[iOS Dev UK 23] Making developer tools with Swift

Transcript

1. Making developer tools with Swift Pol Piella Abadia Senior iOS Developer, BBC iPlayer iOS Dev UK · Aberystwyth, Wales 10:20 Great Hall
2. Senior software engineer based in Manchester Hi! I’m Pol
3. Content creation Apps I am working on Public speaking
4. Content creation Apps I am working on Public speaking
5. Content creation Apps I am working on Public speaking
6. Swift & Developer Tools?
7. Swift & Developer Tools!
8. You know Swift!
9. You (and your team) know Swift!
10. Focus on the system and NOT the language!
11. You (and your audience) know Swift!
12. Can you build it with Swift?
13. #1 A simple CLI script?
14. feature/MYTICKET-123_name-of-your-branch
15. feature/MYTICKET-123_name-of-your-branch Author: Pol Piella Abadia <hi@polpiella.dev> Date: Sun Aug 20 14:03:41 2023 +0100 My awesome feature TICKET-123 Branch Commit
18. # ! /usr/bin/env swift import Foundation let commitMessageFile = CommandLine.arguments[1] guard let data = FileManager.default.contents(atPath: commitMessageFile), let commitMessage = String(data: data, encoding: .utf8) else { exit(1) } let gitBranchName = shell("git rev-parse -- abbrev-ref HEAD") .trimmingCharacters(in: .newlines) let regex = try! NSRegularExpression(pattern: #"(\w+-\d+)"#, options: .anchorsMatchLines) let stringRange = NSRange(location: 0, length: gitBranchName.utf16.count) guard let match = regex.firstMatch(in: gitBranchName, range: stringRange) else { exit(0) } let range = match.range(at: 1) guard !NSEqualRanges(range, NSMakeRange(NSNotFound, 0)) else { exit(1) } let ticketNumber = (gitBranchName as NSString) .substring(with: range) .trimmingCharacters(in: .newlines) if !commitMessage.contains(ticketNumber) { do { try "\(commitMessage.trimmingCharacters(in:.newlines))\n\n\(ticketNumber)" .write(toFile: commitMessageFile, atomically: true, encoding: .utf8) } catch { print("Could not write to file \(commitMessageFile)") } }
19. # ! /usr/bin/env swift import Foundation let commitMessageFile = CommandLine.arguments[1] guard let data = FileManager.default.contents(atPath: commitMessageFile), let commitMessage = String(data: data, encoding: .utf8) else { exit(1) } let gitBranchName = shell("git rev-parse -- abbrev-ref HEAD") .trimmingCharacters(in: .newlines) let regex = try! NSRegularExpression(pattern: #"(\w+-\d+)"#, options: .anchorsMatchLines) let stringRange = NSRange(location: 0, length: gitBranchName.utf16.count) guard let match = regex.firstMatch(in: gitBranchName, range: stringRange) else { exit(0) } let range = match.range(at: 1) guard !NSEqualRanges(range, NSMakeRange(NSNotFound, 0)) else { exit(1) } let ticketNumber = (gitBranchName as NSString) .substring(with: range) .trimmingCharacters(in: .newlines) if !commitMessage.contains(ticketNumber) { do { try "\(commitMessage.trimmingCharacters(in:.newlines))\n\n\(ticketNumber)" .write(toFile: commitMessageFile, atomically: true, encoding: .utf8) } catch { print("Could not write to file \(commitMessageFile)") } }
20. chmod +x file_where_hook_code_is
21. Not so fast…
22. Yes and no… https://github.com/mxcl/swift-sh
23. # ! /usr/bin/env swift-sh import Foundation let commitMessageFile = CommandLine.arguments[1] guard let data = FileManager.default.contents(atPath: commitMessageFile), let commitMessage = String(data: data, encoding: .utf8) else { exit(1) } let gitBranchName = shell("git rev-parse -- abbrev-ref HEAD") .trimmingCharacters(in: .newlines) let regex = try! NSRegularExpression(pattern: #"(\w+-\d+)"#, options: .anchorsMatchLines) let stringRange = NSRange(location: 0, length: gitBranchName.utf16.count) guard let match = regex.firstMatch(in: gitBranchName, range: stringRange) else { exit(0) } let range = match.range(at: 1) guard !NSEqualRanges(range, NSMakeRange(NSNotFound, 0)) else { exit(1) } let ticketNumber = (gitBranchName as NSString) .substring(with: range) .trimmingCharacters(in: .newlines) if !commitMessage.contains(ticketNumber) { do { try "\(commitMessage.trimmingCharacters(in:.newlines))\n\n\(ticketNumber)" .write(toFile: commitMessageFile, atomically: true, encoding: .utf8) } catch { print("Could not write to file \(commitMessageFile)") } }
24. # ! /usr/bin/env swift-sh import Foundation import SourceKittenFramework // @jpsim ~> 0.34.1 let commitMessageFile = CommandLine.arguments[1] guard let data = FileManager.default.contents(atPath: commitMessageFile), let commitMessage = String(data: data, encoding: .utf8) else { exit(1) } let gitBranchName = shell("git rev-parse -- abbrev-ref HEAD") .trimmingCharacters(in: .newlines) let regex = try! NSRegularExpression(pattern: #"(\w+-\d+)"#, options: .anchorsMatchLines) let stringRange = NSRange(location: 0, length: gitBranchName.utf16.count) guard let match = regex.firstMatch(in: gitBranchName, range: stringRange) else { exit(0) } let range = match.range(at: 1) guard !NSEqualRanges(range, NSMakeRange(NSNotFound, 0)) else { exit(1) } let ticketNumber = (gitBranchName as NSString) .substring(with: range) .trimmingCharacters(in: .newlines) if !commitMessage.contains(ticketNumber) { do { try "\(commitMessage.trimmingCharacters(in:.newlines))\n\n\(ticketNumber)" .write(toFile: commitMessageFile, atomically: true, encoding: .utf8) } catch { print("Could not write to file \(commitMessageFile)") } }
25. Future- proofing and scaling
26. swift package init -- type executable
27. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "GitHookExecutable", dependencies: [ ], targets: [ .executableTarget( name: "GitHookExecutable", dependencies: [ ] ), ] )
28. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "GitHookExecutable", dependencies: [ .package(url: "https: // github.com/apple/swift-argument-parser.git", exact: "1.2.3") ], targets: [ .executableTarget( name: "GitHookExecutable", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser") ] ), ] )
29. import ArgumentParser @main struct GitHookExecutable: ParsableCommand { @Argument(help: "The path to the commit message file") var commitMessagePath: String func run() throws { let commitMessage = try String(contentsOfFile: commitMessagePath) // . .. } }
30. Learn more about it! https://www.youtube.com/watch?v=yyOXynCoagE&t=611s
31. #2 Running a build script?
33. brew install swiftlint pod install
34. What about Swift Packages?
35. Swift 5.6 to the rescue! https://github.com/apple/swift-evolution/blob/main/proposals/0303-swiftpm-extensible-build-tools.md
36. // swift-tools-version:5.7 import PackageDescription let package = Package( name: "SwiftLint", platforms: [.macOS(.v12)], products: [ .plugin(name: "SwiftLintPlugin", targets: ["SwiftLintPlugin"]) ], dependencies: [ / / .. . ], targets: [ .plugin( name: "SwiftLintPlugin", capability: .buildTool(), dependencies: [ .target(name: "SwiftLintBinary", condition: .when(platforms: [.macOS])), .target(name: "swiftlint", condition: .when(platforms: [.linux])) ] ), .executableTarget( name: "swiftlint", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser"), "CollectionConcurrencyKit", "SwiftLintFramework", "SwiftyTextTable", ] ), .binaryTarget( name: "SwiftLintBinary", url: "https: // github.com/realm/SwiftLint/releases/download/0.52.4/SwiftLintBinary-macos.artifactbundle.zip", checksum: "8a8095e6235a07d00f34a9e500e7568b359f6f66a249f36d12cd846017a8c6f5" ) ] ) https://github.com/realm/SwiftLint/blob/main/Package.swift
37. // swift-tools-version:5.7 import PackageDescription let package = Package( name: "SwiftLint", platforms: [.macOS(.v12)], products: [ .plugin(name: "SwiftLintPlugin", targets: ["SwiftLintPlugin"]) ], dependencies: [ / / .. . ], targets: [ .plugin( name: "SwiftLintPlugin", capability: .buildTool(), dependencies: [ .target(name: "SwiftLintBinary", condition: .when(platforms: [.macOS])), .target(name: "swiftlint", condition: .when(platforms: [.linux])) ] ), .executableTarget( name: "swiftlint", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser"), "CollectionConcurrencyKit", "SwiftLintFramework", "SwiftyTextTable", ] ), .binaryTarget( name: "SwiftLintBinary", url: "https: // github.com/realm/SwiftLint/releases/download/0.52.4/SwiftLintBinary-macos.artifactbundle.zip", checksum: "8a8095e6235a07d00f34a9e500e7568b359f6f66a249f36d12cd846017a8c6f5" ) ] ) https://github.com/realm/SwiftLint/blob/main/Package.swift
38. // swift-tools-version:5.7 import PackageDescription let package = Package( name: "SwiftLint", platforms: [.macOS(.v12)], products: [ .plugin(name: "SwiftLintPlugin", targets: ["SwiftLintPlugin"]) ], dependencies: [ / / .. . ], targets: [ .plugin( name: "SwiftLintPlugin", capability: .buildTool(), dependencies: [ .target(name: "SwiftLintBinary", condition: .when(platforms: [.macOS])), .target(name: "swiftlint", condition: .when(platforms: [.linux])) ] ), .executableTarget( name: "swiftlint", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser"), "CollectionConcurrencyKit", "SwiftLintFramework", "SwiftyTextTable", ] ), .binaryTarget( name: "SwiftLintBinary", url: "https: // github.com/realm/SwiftLint/releases/download/0.52.4/SwiftLintBinary-macos.artifactbundle.zip", checksum: "8a8095e6235a07d00f34a9e500e7568b359f6f66a249f36d12cd846017a8c6f5" ) ] ) https://github.com/realm/SwiftLint/blob/main/Package.swift
39. // swift-tools-version:5.7 import PackageDescription let package = Package( name: "SwiftLint", platforms: [.macOS(.v12)], products: [ .plugin(name: "SwiftLintPlugin", targets: ["SwiftLintPlugin"]) ], dependencies: [ / / .. . ], targets: [ .plugin( name: "SwiftLintPlugin", capability: .buildTool(), dependencies: [ .target(name: "SwiftLintBinary", condition: .when(platforms: [.macOS])), .target(name: "swiftlint", condition: .when(platforms: [.linux])) ] ), .executableTarget( name: "swiftlint", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser"), "CollectionConcurrencyKit", "SwiftLintFramework", "SwiftyTextTable", ] ), .binaryTarget( name: "SwiftLintBinary", url: "https: // github.com/realm/SwiftLint/releases/download/0.52.4/SwiftLintBinary-macos.artifactbundle.zip", checksum: "8a8095e6235a07d00f34a9e500e7568b359f6f66a249f36d12cd846017a8c6f5" ) ] ) https://github.com/realm/SwiftLint/blob/main/Package.swift
40. // swift-tools-version:5.7 import PackageDescription let package = Package( name: "SwiftLint", platforms: [.macOS(.v12)], products: [ .plugin(name: "SwiftLintPlugin", targets: ["SwiftLintPlugin"]) ], dependencies: [ / / .. . ], targets: [ .plugin( name: "SwiftLintPlugin", capability: .buildTool(), dependencies: [ .target(name: "SwiftLintBinary", condition: .when(platforms: [.macOS])), .target(name: "swiftlint", condition: .when(platforms: [.linux])) ] ), .executableTarget( name: "swiftlint", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser"), "CollectionConcurrencyKit", "SwiftLintFramework", "SwiftyTextTable", ] ), .binaryTarget( name: "SwiftLintBinary", url: "https: // github.com/realm/SwiftLint/releases/download/0.52.4/SwiftLintBinary-macos.artifactbundle.zip", checksum: "8a8095e6235a07d00f34a9e500e7568b359f6f66a249f36d12cd846017a8c6f5" ) ] ) https://github.com/realm/SwiftLint/blob/main/Package.swift
41. import Foundation import PackagePlugin @main struct SwiftLintPlugin: BuildToolPlugin { func createBuildCommands(context: PluginContext, target: Target) async throws - > [Command] { guard let sourceTarget = target as? SourceModuleTarget else { return [] } return createBuildCommands( inputFiles: sourceTarget.sourceFiles(withSuffix: "swift").map(\.path), packageDirectory: context.package.directory, workingDirectory: context.pluginWorkDirectory, tool: try context.tool(named: "swiftlint") ) } private func createBuildCommands( inputFiles: [Path], packageDirectory: Path, workingDirectory: Path, tool: PluginContext.Tool ) -> [Command] { // . .. return [ .prebuildCommand( displayName: "SwiftLint", executable: tool.path, arguments: arguments, outputFilesDirectory: outputFilesDirectory ) ] } } https://github.com/realm/SwiftLint/blob/main/Plugins/SwiftLintPlugin/SwiftLintPlugin.swift
42. import Foundation import PackagePlugin @main struct SwiftLintPlugin: BuildToolPlugin { func createBuildCommands(context: PluginContext, target: Target) async throws - > [Command] { guard let sourceTarget = target as? SourceModuleTarget else { return [] } return createBuildCommands( inputFiles: sourceTarget.sourceFiles(withSuffix: "swift").map(\.path), packageDirectory: context.package.directory, workingDirectory: context.pluginWorkDirectory, tool: try context.tool(named: "swiftlint") ) } private func createBuildCommands( inputFiles: [Path], packageDirectory: Path, workingDirectory: Path, tool: PluginContext.Tool ) -> [Command] { // . .. return [ .prebuildCommand( displayName: "SwiftLint", executable: tool.path, arguments: arguments, outputFilesDirectory: outputFilesDirectory ) ] } } https://github.com/realm/SwiftLint/blob/main/Plugins/SwiftLintPlugin/SwiftLintPlugin.swift
43. import Foundation import PackagePlugin @main struct SwiftLintPlugin: BuildToolPlugin { func createBuildCommands(context: PluginContext, target: Target) async throws - > [Command] { guard let sourceTarget = target as? SourceModuleTarget else { return [] } return createBuildCommands( inputFiles: sourceTarget.sourceFiles(withSuffix: "swift").map(\.path), packageDirectory: context.package.directory, workingDirectory: context.pluginWorkDirectory, tool: try context.tool(named: "swiftlint") ) } private func createBuildCommands( inputFiles: [Path], packageDirectory: Path, workingDirectory: Path, tool: PluginContext.Tool ) -> [Command] { // . .. return [ .prebuildCommand( displayName: "SwiftLint", executable: tool.path, arguments: arguments, outputFilesDirectory: outputFilesDirectory ) ] } } https://github.com/realm/SwiftLint/blob/main/Plugins/SwiftLintPlugin/SwiftLintPlugin.swift
44. import Foundation import PackagePlugin @main struct SwiftLintPlugin: BuildToolPlugin { func createBuildCommands(context: PluginContext, target: Target) async throws - > [Command] { guard let sourceTarget = target as? SourceModuleTarget else { return [] } return createBuildCommands( inputFiles: sourceTarget.sourceFiles(withSuffix: "swift").map(\.path), packageDirectory: context.package.directory, workingDirectory: context.pluginWorkDirectory, tool: try context.tool(named: "swiftlint") ) } private func createBuildCommands( inputFiles: [Path], packageDirectory: Path, workingDirectory: Path, tool: PluginContext.Tool ) -> [Command] { // . .. return [ .prebuildCommand( displayName: "SwiftLint", executable: tool.path, arguments: arguments, outputFilesDirectory: outputFilesDirectory ) ] } } https://github.com/realm/SwiftLint/blob/main/Plugins/SwiftLintPlugin/SwiftLintPlugin.swift
45. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "DemoSwiftPackage", products: [ .library( name: "DemoSwiftPackage", targets: ["DemoSwiftPackage"] ), ], dependencies: [ .package(url: "https: // github.com/realm/SwiftLint.git", exact: "0.52.4") ], targets: [ .target( name: "DemoSwiftPackage", plugins: [ .plugin(name: "SwiftLintPlugin", package: "SwiftLint") ] ) ] )
46. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "DemoSwiftPackage", products: [ .library( name: "DemoSwiftPackage", targets: ["DemoSwiftPackage"] ), ], dependencies: [ .package(url: "https: // github.com/realm/SwiftLint.git", exact: "0.52.4") ], targets: [ .target( name: "DemoSwiftPackage", plugins: [ .plugin(name: "SwiftLintPlugin", package: "SwiftLint") ] ) ] )
47. What about Xcode projects?
48. import Foundation import PackagePlugin #if canImport(XcodeProjectPlugin) import XcodeProjectPlugin extension SwiftLintPlugin: XcodeBuildToolPlugin { func createBuildCommands(context: XcodePluginContext, target: XcodeTarget) throws - > [Command] { let inputFilePaths = target.inputFiles .filter { $0.type == .source && $0.path.extension == "swift" } .map(\.path) return createBuildCommands( inputFiles: inputFilePaths, packageDirectory: context.xcodeProject.directory, workingDirectory: context.pluginWorkDirectory, tool: try context.tool(named: "swiftlint") ) } } #endif https://github.com/realm/SwiftLint/blob/main/Plugins/SwiftLintPlugin/SwiftLintPlugin.swift
51. Manually running a build script?
52. import UIKit public protocol Camera { func start() func stop() func capture(_ completion: @escaping (UIImage?) -> Void) func rotate() }
53. import UIKit // Protocol to be matched protocol AutoMockable {} public protocol Camera: AutoMockable { func start() func stop() func capture(_ completion: @escaping (UIImage?) -> Void) func rotate() }
54. ./sourcery -- config ".sourcery.yml"
55. // Generated using Sourcery 1.8.2 — https: // github.com/krzysztofzablocki/Sourcery // DO NOT EDIT // swiftlint:disable line_length // swiftlint:disable variable_name import Foundation #if os(iOS) || os(tvOS) || os(watchOS) import UIKit #elseif os(OSX) import AppKit #endif class CameraMock: Camera { // MARK: - start var startCallsCount = 0 var startCalled: Bool { return startCallsCount > 0 } var startClosure: (() -> Void)? func start() { startCallsCount += 1 startClosure?() } //
56. What if…
57. / / swift-tools-version:5.6 import PackageDescription import Foundation let package = Package( name: "Sourcery", platforms: [ .macOS(.v12) ], products: [ .plugin(name: "SourceryCommandPlugin", targets: ["SourceryCommandPlugin"]) ], dependencies: [], targets: [ .executableTarget( name: "SourceryExecutable", dependencies: ["SourceryLib"], path: "SourceryExecutable", exclude: [ "Info.plist" ] ), .plugin( name: "SourceryCommandPlugin", capability: .command( intent: .custom( verb: "sourcery-command", description: "Sourcery command plugin for code generation" ), permissions: [ .writeToPackageDirectory(reason: "Need permission to write generated files to package directory") ] ), dependencies: ["SourceryExecutable"] ) ] ) https://github.com/krzysztofzablocki/Sourcery/blob/master/Package.swift
58. / / swift-tools-version:5.6 import PackageDescription import Foundation let package = Package( name: "Sourcery", platforms: [ .macOS(.v12) ], products: [ .plugin(name: "SourceryCommandPlugin", targets: ["SourceryCommandPlugin"]) ], dependencies: [], targets: [ .executableTarget( name: "SourceryExecutable", dependencies: ["SourceryLib"], path: "SourceryExecutable", exclude: [ "Info.plist" ] ), .plugin( name: "SourceryCommandPlugin", capability: .command( intent: .custom( verb: "sourcery-command", description: "Sourcery command plugin for code generation" ), permissions: [ .writeToPackageDirectory(reason: "Need permission to write generated files to package directory") ] ), dependencies: ["SourceryExecutable"] ) ] ) https://github.com/krzysztofzablocki/Sourcery/blob/master/Package.swift
59. / / swift-tools-version:5.6 import PackageDescription import Foundation let package = Package( name: "Sourcery", platforms: [ .macOS(.v12) ], products: [ .plugin(name: "SourceryCommandPlugin", targets: ["SourceryCommandPlugin"]) ], dependencies: [], targets: [ .executableTarget( name: "SourceryExecutable", dependencies: ["SourceryLib"], path: "SourceryExecutable", exclude: [ "Info.plist" ] ), .plugin( name: "SourceryCommandPlugin", capability: .command( intent: .custom( verb: "sourcery-command", description: "Sourcery command plugin for code generation" ), permissions: [ .writeToPackageDirectory(reason: "Need permission to write generated files to package directory") ] ), dependencies: ["SourceryExecutable"] ) ] ) https://github.com/krzysztofzablocki/Sourcery/blob/master/Package.swift
60. import PackagePlugin import Foundation @main struct SourceryCommandPlugin: CommandPlugin { func performCommand(context: PluginContext, arguments: [String]) async throws { / / Run one per target for target in context.package.targets { let configFilePath = target.directory.appending(subpath: ".sourcery.yml").string let sourcery = try context.tool(named: "SourceryExecutable").path.string guard FileManager.default.fileExists(atPath: configFilePath) else { Diagnostics.warning("⚠ Could not find `.sourcery.yml` for target \(target.name)") continue } let sourceryURL = URL(fileURLWithPath: sourcery) let process = Process() process.executableURL = sourceryURL process.arguments = [ " - - config", configFilePath, " - - cacheBasePath", context.pluginWorkDirectory.string ] try process.run() process.waitUntilExit() let gracefulExit = process.terminationReason = = .exit && process.terminationStatus == 0 if !gracefulExit { throw "🛑 The plugin execution failed with reason: \(process.terminationReason.rawValue) and status: \(process.terminationStatus) " } } } } https://github.com/krzysztofzablocki/Sourcery/blob/master/Plugins/SourceryCommandPlugin/SourceryCommandPlugin.swift
61. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "GitHookExecutable", dependencies: [ .package(url: "https: // github.com/apple/swift-argument-parser.git", exact: "1.2.3") ], targets: [ .executableTarget( name: "GitHookExecutable", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser") ] ), ] )
62. // swift-tools-version: 5.9 import PackageDescription let package = Package( name: "GitHookExecutable", dependencies: [ .package(url: "https: // github.com/apple/swift-argument-parser.git", exact: "1.2.3"), .package(url: "https: // github.com/krzysztofzablocki/Sourcery.git", exact: "2.0.3") ], targets: [ .executableTarget( name: "GitHookExecutable", dependencies: [ .product(name: "ArgumentParser", package: "swift-argument-parser") ] ), ] )
63. swift package sourcery-command
65. What about Xcode projects?
66. #if canImport(XcodeProjectPlugin) import XcodeProjectPlugin extension SourceryCommandPlugin: XcodeCommandPlugin { func performCommand(context: XcodePluginContext, arguments: [String]) throws { for target in context.xcodeProject.targets { guard let configFilePath = target .inputFiles .filter({ $0.path.lastComponent == ".sourcery.yml" }) .first? .path .string else { Diagnostics.warning("⚠ Could not find `.sourcery.yml` in Xcode's input file list") return } let sourcery = try context.tool(named: "SourceryExecutable").path.string try run(sourcery, withConfig: configFilePath, cacheBasePath: context.pluginWorkDirectory.string) } } } #endif https://github.com/krzysztofzablocki/Sourcery/blob/master/Plugins/SourceryCommandPlugin/SourceryCommandPlugin.swift
69. #3 Back-End service?
72. How does this work?
73. Ok… but what are web hooks?
74. issue_comment webhook https://docs.github.com/en/webhooks/webhook-events-and-payloads#issue_comment
75. Creating a service with Swift!
78. https://github.com/swift-server/swift-aws-lambda-runtime
79. It’s just an executable…
80. import AWSLambdaRuntime import AWSLambdaEvents @main struct UploadToTestFlightWebhook: SimpleLambdaHandler { let snakeCaseDecoder: JSONDecoder init() { let decoder = JSONDecoder() decoder.keyDecodingStrategy = .convertFromSnakeCase snakeCaseDecoder = decoder } func handle(_ request: APIGatewayV2Request, context: LambdaContext) async throws -> APIGatewayV2Response { guard let body = request.body, let bodyData = body.data(using: .utf8), let request = try? snakeCaseDecoder.decode(GithubWebhookData.self, from: bodyData) else { return .init(statusCode: .badRequest, body: "Could not parse the request content ... ") } guard request.action == "created", request.comment.body.lowercased() == "upload to testflight" else { return .init(statusCode: .ok, body: "Not handling the event ... ") } // ... } }
81. … that runs on a different platform
82. #! /bin/bash product=Webhook docker run \ -- rm \ -- volume "$(pwd)/:/src" \ -- workdir "/src/" \ swift:5.8-amazonlinux2 \ swift build -- product $product -c release -Xswiftc -static-stdlib target=.build/lambda/$product rm -rf "$target" mkdir -p "$target" cp ".build/release/$product" "$target/" cd "$target" ln -s "$product" "bootstrap" zip -- symlinks lambda.zip * https://fabianfett.dev/getting-started-with-swift-aws-lambda-runtime
83. #! /bin/bash swift package \ -- disable-sandbox archive \ -- swift-version 5.8 \ -- output-path . \ -- products Webhook
84. #! /bin/bash swift package \ -- disable-sandbox archive \ -- swift-version 5.8 \ -- output-path . \ -- products Webhook
85. It’s getting better…
86. You still need to upload it…
88. service: upload-to-testflight-webhook frameworkVersion: "3" configValidationMode: warn package: artifact: build/Products/Webhook.zip provider: name: aws region: eu-west-1 httpApi: payload: "2.0" cors: true runtime: provided.al2 architecture: arm64 functions: webhook: handler: webhook memorySize: 256 description: "[${sls:stage}] Upload" events: - httpApi: path: /upload method: post Serverless framework https://www.serverless.com
89. name: Deploy the serverless lambda to AWS on: push: branches: - main jobs: deploy: runs-on: ubuntu-latest container: image: swift:5.8-amazonlinux2 steps: - uses: actions/checkout@v3 - name: Configure AWS Credentials uses: aws-actions/configure-aws-credentials@v2 with: aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }} aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }} aws-region: eu-west-2 - name: Install zip run: | yum install -y zip - name: Install awscli run: | yum install -y awscli - name: Archive the lambda run: | ./package.sh Webhook - name: Deploy to AWS run: | aws lambda update-function-code \ - - function-name webhook \ - - zip-file fileb: // .build/lambda/Webhook/Webhook.zip CI/CD workflow https://www.polpiella.dev/automatic-deployment-of-swift-aws-lambdas-on-ci-cd
90. This is jut the tip of the iceberg…
91. Even slide decks! https://github.com/joshdholtz/DeckUI
92. Any questions?
93. Any questions? I have stickers too…
94. Resources - Plugins https://www.polpiella.dev/code-generation-using-swift-package-plugins https://www.polpiella.dev/sourcery-swift-package-command-plugin https://www.polpiella.dev/load-custom-fonts-with-no-code-using-swift-package-plugins https://www.polpiella.dev/an-early-look-at-swift-extensible-build-tools https://theswiftdev.com/beginners-guide-to-swift-package-manager-command-plugins/ https://www.polpiella.dev/binary-targets-in-modern-swift-packages https://www.polpiella.dev/network-requests-in-swift-package-plugins
95. https://www.polpiella.dev/automating-swift-package-releases-with-github-actions https://www.polpiella.dev/collecting-gihub-actions-workflow-metrics-with-swift https://www.polpiella.dev/scripting-in-swift-git-hooks https://github.com/artemnovichkov/Swift-For-Scripting https://blog.eidinger.info/swift-e-runs-code-directly-from-the-command-line https://nshipster.com/swift-sh/ Resources - CLI + Scripts
96. https://www.areweserveryet.org/ https://www.polpiella.dev/github-webhooks-and-xcode-cloud https://www.polpiella.dev/swift-async-await-in-aws-lambdas https://www.polpiella.dev/scheduled-swift-aws-lambdas https://www.polpiella.dev/automatic-deployment-of-swift-aws-lambdas-on-ci-cd https://opticalaberration.com/2021/12/proxy-server.html Resources - ServerSide Swift https://www.serversideswift.info https://theswiftdev.com