Introduction to Vapor The Developer’s 3 

" Head of Vapor Development at Nodes Full time Vapor developer since January 2017 Background in iOS development ~50 customer projects and ~40 packages @steffendsommer 

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“Platform support for all Apple platforms as well as Linux” 

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A web framework built in Swift Official support for SQLite, MySQL, PostgreSQL and Redis Built on top of SwiftNIO 

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Frontend Backend Static websites Dynamic websites API 

Backend API Android application iOS application Single page application Illustration borrowed from Jonas Schwartz 

1.0 Sep, 2016 2.0 May, 2017 3.0 April, 2018 0.1 Jan, 2016 Timeline borrowed from Tanner Nelson 

⚙ Configs Codable Async 

import Vapor let app = try Application() let router = try app.make(Router.self) router.get("hello") { req in return "Hello, world." } try app.run() 

Strong, safe and modern language Fast and has a low memory footprint (aka. ) Tech awesomeness ♻ Potential synergy between iOS and Vapor 

♻ Models ⚠ Errors Frameworks used in both places Endpoints & Environments Business logic Styling Test code (e.g. mocks) ✅ Validation ☂ A framework that wraps the endpoints 

Modern and Swifty API’s Great community Growing eco system Most popular 

Everything is “new” Tooling ⚙ Foundation Eco system Resources 

≠ 

Number of users 1 ≠ ∞ 

Performance ? ≠ < 2 sec 

Performance Free ≠ Pricy 

Platforms iOS tvOS macOS watchOS ≠ macOS Linux 

Bug fixing Next release cycle ≠ Fix it now 

User Interfaces Storyboards Auto Layout Xib ≠ HTML CSS JavaScript
 Leaf 

The Xcode Project File Merge madness ≠ What file? 

State Used when needed ≠ It’s all about the request 

Persistence Used ≠ Very central 

Architecture MVC MVVM MVP VIPER ≠ MVC 

? 

https://www.serversideswift.work 

Create a new post Show all published posts, sorted by a publish date Show details of a single post 

brew install vapor/tap/vapor 1 

vapor new ServerSideSwiftWork 2 

vapor xcode 3 

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http://localhost:8080/hello 

SQLite Fluent Leaf 

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// swift-tools-version:4.2 import PackageDescription let package = Package( name: "ServerSideSwiftWork", dependencies: [ // A server-side Swift web framework. .package(url: "https://github.com/vapor/vapor.git", from: "3.0.0"), // Swift ORM (queries, models, relations, etc) built on SQLite 3. .package(url: "https://github.com/vapor/fluent-sqlite.git", from: "3.0.0"), // Template engine .package(url: "https://github.com/vapor/leaf.git", from: "3.0.1"), ], targets: [ .target(name: "App", dependencies: ["Leaf", "FluentSQLite", "Vapor"]), .target(name: "Run", dependencies: ["App"]), .testTarget(name: "AppTests", dependencies: ["App"]) ] ) 

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final class Work: Codable { public var id: Int? public var company: String public var location: String public var title: String public var description: String public var externalUrl: String public var publishedAt: Date? public init( company: String, location: String, title: String, description: String, externalUrl: String, publishedAt: Date? = nil ) { self.company = company self.location = location self.title = title self.description = description self.externalUrl = externalUrl self.publishedAt = publishedAt } } 

extension Work: SQLiteModel {} extension Work: Migration {} extension Work: Content {} extension Work: Parameter {} 

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func create(_ req: Request) throws -> Future { return try req .content .decode(Work.self) .save(on: req) } 

func index(_ req: Request) throws -> Future<[Work]> { return Work .query(on: req) .filter(\.publishedAt != nil) .sort(\.publishedAt, .descending) .all() } 

struct ViewData: Codable { let work: [Work] } func renderIndex(_ req: Request) throws -> Future { return Work .query(on: req) .filter(\.publishedAt != nil) .sort(\.publishedAt, .descending) .all() .flatMap { items in try req.view().render("index", ViewData(work: items)) } } 

func show(_ req: Request) throws -> Future { return try req .parameters .next(Work.self) } 

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Work

#for(item in work) {
• #(item.title) at #(item.company)
  #(item.description)
}



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public func routes(_ router: Router) throws { let workController = WorkController() router.get("api/work", use: workController.index) router.get("api/work", Work.parameter, use: workController.show) router.post("api/work", use: workController.create) router.get("work", use: workController.renderIndex) } 

⚙ 

public func configure(_ config: inout Config, _ env: inout Environment, _ services: inout Services) throws { /// Register providers first try services.register(FluentSQLiteProvider()) try services.register(LeafProvider()) config.prefer(LeafRenderer.self, for: ViewRenderer.self) /// Register routes to the router let router = EngineRouter.default() try routes(router) services.register(router, as: Router.self) /// Register middleware var middlewares = MiddlewareConfig() middlewares.use(ErrorMiddleware.self) services.register(middlewares) // Configure a SQLite database let sqlite = try SQLiteDatabase(storage: .memory) /// Register the configured SQLite database to the database config. var databases = DatabasesConfig() databases.add(database: sqlite, as: .sqlite) services.register(databases) /// Configure migrations var migrations = MigrationConfig() migrations.add(model: Work.self, database: .sqlite) services.register(migrations) } 

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try services.register(FluentSQLiteProvider()) try services.register(LeafProvider()) config.prefer(LeafRenderer.self, for: ViewRenderer.self) 

let router = EngineRouter.default() try routes(router) services.register(router, as: Router.self) 

let sqlite = try SQLiteDatabase(storage: .memory) var databases = DatabasesConfig() databases.add(database: sqlite, as: .sqlite) services.register(databases) 

var migrations = MigrationConfig() migrations.add(model: Work.self, database: .sqlite) services.register(migrations) 

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GET http://localhost:8080/work 

Yes, async is hard at first RxSwift/ReactiveSwift can be a plus Async/await would be great 

☁ 

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vapor cloud deploy 

https://vapor.cloud 

Multiple regions and cloud providers Custom docker templates ♻ Internal DNS setup Build pipeline ✏ Releases and rollback Public API Database IP Built-in Git server Commands in separate replicas ⚙ Loadbalancer configuration More statistics All features in the dashboard Config updates without redeployment And much more… Version 2 

Public alpha Now-ish Week 40-41 

https://docs.vapor.codes https://discord.gg/vapor Tim Condon - Getting Started with Server Side Swift and Vapor (Codemobile 2018) ? https://www.serversideswift.work https://www.serversideswift.info 

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@steffendsommer