Vapor State of the Union

The creator of Vapor gives an overview of what the core team has been working on this past year. He also discusses the future of Vapor and some exciting developments in server-side Swift.

Transcript

1. VAPOR State of the Union @tanner0101 By
2. Brief History 1.0 Sep 2016 2.0 May 2017 3.0 May 2018 0.1 Jan 2016 Rewrite
3. 3.0 Biggest Changes
4. 3.0 Codable ⚙ Config SwiftNIO Biggest Changes
5. ⚙ Config 2.0
6. { "port": "8080", "host": "0.0.0.0", "securityLayer": "none" } ⚙ Config 2.0
7. let config = NIOServerConfig .default(hostname: "localhost", port: 8080) services.register(config) ⚙ Config 3.0
8. let port = env.isRelease ? 80 : 8080
 let config = NIOServerConfig .default(hostname: "localhost", port: port) services.register(config) ⚙ Config 3.0
9. ⚙ Config 3.0
10. Codable
11. Codable final class Post: Model { let content: String let storage = Storage() init(row: Row) throws { content = try row.get("content") } func makeRow() throws -> Row { var row = Row() try row.set("content", content) return row } } 2.0
12. Codable struct Post: SQLiteModel { var id: Int? let content: String } 3.0
13. SwiftNIO
14. SwiftNIO
15. SwiftNIO 2.0 let todos = try Todo.makeQuery().all() print(todos) // [Todo] print(todos.count) return try todos.makeJSON()
16. SwiftNIO let todos = Todo.query(on: req).all() print(todos) // Future<[Todo]> return todos.map { todos in print(todos.count) return todos } 3.0
17. SwiftNIO Why?
18. SwiftNIO Merging NIO-based implementation of vapor/http
19. SwiftNIO Merging NIO-based implementation of vapor/http
20. SwiftNIO Non-blocking apps can handle more IO-bound requests at once.
21. SwiftNIO Non-blocking apps can handle more IO-bound requests at once.
22. Blocking Non-Blocking
23. Blocking Non-Blocking Thread
24. Blocking Non-Blocking Request 1 1
25. Blocking Non-Blocking 1 1
26. Blocking Non-Blocking 1 1
27. Blocking Non-Blocking 1 1
28. Blocking Non-Blocking 1 1 2 2
29. Blocking Non-Blocking 1 1 2 2 ❌
30. Blocking Non-Blocking 1 1 2 2 ❌ Just open more threads?
31. Database queries. External API requests. File streaming. WebSockets. I/O-bound
32. func foo() -> Future<String> foo().map { string in print(string) } Coroutines (async / await)
33. func foo() async -> String let string = await foo() Coroutines (async / await)
34. func foo() async -> String let string = await foo() Coroutines (async / await) Swift 7
35. SwiftNIO
36. Packages
37. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
38. HTTP Small wrapper around SwiftNIO’s HTTP/1 module.
39. import NIO import NIOHTTP1 private final class HTTPHandler: ChannelInboundHandler { typealias InboundIn = HTTPServerRequestPart typealias OutboundOut = HTTPServerResponsePart func channelRead(ctx: ChannelHandlerContext, data: NIOAny) { let req = unwrapInboundIn(data) switch req { case .end: let message = "Hello, world!" let res = HTTPResponseHead( version: .init(major: 1, minor: 1), status: .ok, headers: HTTPHeaders.init([ ("Content-Length", message.count.description), ("Content-Type", "text/plain") ]) ) ctx.write(wrapOutboundOut(.head(res)), promise: nil) var buffer = ctx.channel.allocator.buffer(capacity: message.count) buffer.write(string: message) ctx.write(wrapOutboundOut(.body(.byteBuffer(buffer))), promise: nil) ctx.writeAndFlush(wrapOutboundOut(.end(nil)), promise: nil) case .body, .head: break } } } let group = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount) let bootstrap = ServerBootstrap(group: group) .serverChannelOption(ChannelOptions.backlog, value: 256) .serverChannelOption(ChannelOptions.socket(SocketOptionLevel(SOL_SOCKET), SO_REUSEADDR), value: 1) .childChannelInitializer { channel in channel.pipeline.configureHTTPServerPipeline(withErrorHandling: true).then { channel.pipeline.add(handler: HTTPHandler()) } } .childChannelOption(ChannelOptions.socket(IPPROTO_TCP, TCP_NODELAY), value: 1) .childChannelOption(ChannelOptions.socket(SocketOptionLevel(SOL_SOCKET), SO_REUSEADDR), value: 1) .childChannelOption(ChannelOptions.maxMessagesPerRead, value: 1) defer { try! group.syncShutdownGracefully() } let channel = try bootstrap.bind(host: "localhost", port: 8080).wait() print("Server booted") try channel.closeFuture.wait() “Hello World” in SwiftNIO ~50 LoC
40. HTTP import HTTP struct Hello: HTTPServerResponder { func respond(to req: HTTPRequest, on worker: Worker) -> Future<HTTPResponse> { let res = HTTPResponse(body: "Hello, world!") return worker.future(res) } } let group = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount) defer { try! group.syncShutdownGracefully() } let server = try HTTPServer.start( hostname: "localhost", port: 8080, responder: Hello(), on: group ).wait() try server.onClose.wait() <20 LoC 3.0
41. HTTP import HTTP struct Hello: HTTPServerResponder { func respond(to req: HTTPRequest, on worker: Worker) -> Future<HTTPResponse> { let res = HTTPResponse(body: "Hello, world!") return worker.future(res) } } <20 LoC 3.0
42. HTTP } NIO HTTP 3.0
43. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
44. WebSocket Client Server
45. WebSocket Client Server http://
46. WebSocket Client Server Request http://
47. WebSocket Client Server Request Response http://
48. WebSocket Client Server ws://
49. WebSocket Client Server ws:// Connect
50. WebSocket Client Server ws:// Connect Data
51. WebSocket Client Server ws:// Connect Data
52. WebSocket Client Server ws:// Connect Data
53. WebSocket Client Server ws:// Connect Data
54. import WebSocket
 
 let ws = HTTPServer.webSocketUpgrader(shouldUpgrade: { req in return [:] }, onUpgrade: { ws, req in ws.onText { ws, string in ws.send(string.reversed()) } }) WebSocket 3.0
55. import WebSocket
 
 let ws = HTTPServer.webSocketUpgrader(shouldUpgrade: { req in return [:] }, onUpgrade: { ws, req in ws.onText { ws, string in ws.send(string.reversed()) } }) let group = MultiThreadedEventLoopGroup(numberOfThreads: System.coreCount) defer { try! group.syncShutdownGracefully() } let server = try HTTPServer.start( hostname: "localhost", port: 8080, responder: ..., upgraders: [ws], on: group ).wait() WebSocket 3.0
56. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
57. MySQL PostgreSQL ⚡ Redis Pure Swift, wire protocol clients. 3.0
58. MySQL PostgreSQL ⚡ Redis 3.0
59. MySQL PostgreSQL ⚡ Redis Code Comments 3,200 800 3,700 1,000 200 1,500 7,700 2,700
60. Blocking Non-Blocking 1 1 2 2 You’re only as fast as your slowest code. ❌
61. MySQL PostgreSQL ⚡ Redis 3.0
62. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
63. + SQL Lightweight API for writing SQL queries. 3.0
64. + SQL 3.0 SELECT * FROM galaxies WHERE type = ‘spiral’
65. + SQL 3.0 conn SELECT * FROM galaxies WHERE type = ‘spiral’
66. + SQL 3.0 conn.select() SELECT * FROM galaxies WHERE type = ‘spiral’
67. + SQL 3.0 conn.select().all() SELECT * FROM galaxies WHERE type = ‘spiral’
68. + SQL 3.0 conn.select().all().from(Galaxy.self) SELECT * FROM galaxies WHERE type = ‘spiral’
69. + SQL 3.0 conn.select().all().from(Galaxy.self) .where(\Galaxy.type == .spiral) SELECT * FROM galaxies WHERE type = ‘spiral’
70. + SQL 3.0 conn.select().all().from(Galaxy.self) .where(\Galaxy.type == .spiral) .all(decoding: Galaxy.self) SELECT * FROM galaxies WHERE type = ‘spiral’
71. + SQL 3.0 conn.select().all().from(Galaxy.self) .join(Planet.self, on: \Galaxy.id == \Planet.galaxyID) .where(\Galaxy.type == .spiral) .where(\Planet.type == .smallRocky) .all(decoding: Planet.self, Galaxy.self)
72. + SQL 3.0 conn.select() .column(function: "version") .run()
73. + SQL 3.0 conn.select() .column(function: "version") .run() SELECT version()
74. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
75. Fluent Swift ORM.
76. struct Todo: SQLiteModel { var id: Int? let title: String } 3.0 Fluent
77. Fluent let todo = Todo(title: "Fix Bugs ") todo.create(on: req) 3.0
78. Fluent let todos = Todo.query(on: req) .filter(\.title == "Clean room") .all() 3.0
79. Fluent let count = Todo.query(on: req) .filter(\.title == "Clean room") .count() 3.0
80. Fluent func index(_ req: Request) -> Future<[Todo]> { return Todo.query(on: req).all() } 3.0
81. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
82. Vapor HTTP Server + Router + Middleware
83. Vapor 3.0 router.get("hello") { req in return "Hello, world!" }
84. Vapor router.get("hello") { req in return "Hello, world!" } 3.0 $ curl localhost:8080/hello Hello, world!
85. Vapor 3.0 router.get("hello", String.parameter) { req in let name = try req.parameters.next(String.self) return "Hello, \(name)!" }
86. Vapor router.get("hello", String.parameter) { req in let name = try req.parameters.next(String.self) return "Hello, \(name)!" } 3.0 $ curl localhost:8080/hello/Swift Hello, Swift!
87. Vapor 3.0 struct LoginInfo: Content { var email: String var password: String } router.post("login") { req in return try req.content.decode(LoginInfo.self).map { info in return "\(info.email): \(info.password)" } }
88. Vapor struct LoginInfo: Content { var email: String var password: String } router.post("login") { req in return try req.content.decode(LoginInfo.self).map { info in return "\(info.email): \(info.password)" } } 3.0 $ curl -X POST -H 'Content-Type: application/json' -d '{"email": "test@vapor.codes", "password": "123"}' localhost:8080/login test@vapor.codes: 123
89. HTTP PostgreSQL Console Core JWT + SQL ⚡ Redis Vapor DatabaseKit MySQL TemplateKit Routing Crypto Auth Leaf ✅ Validation Multipart Fluent URL-Encoded Form SQLite WebSocket Service
90. 2 vapor.cloud
91. Cloud Coding is fun. Deploying isn’t.
92. Cloud $ vapor cloud deploy
93. ~/dev/tanner0101/TodoAPI master $ vapor cloud deploy app: Server-side Swift 18 git: git@github.com:tanner0101/sss-berlin—18.git env: production db: none replicas: 1 replica size: large branch: master build: incremental Creating deployment [Done] Connecting to build logs ... Waiting in Queue [Done] Starting deployment: 'sss-berlin-18' [Done] Getting project from Git 'git@github.com:tanner0101/sss-berlin—18.git' [Done] ... Building container [Done] Pushing container to registry [Done] Updating replicas [Done] Deployment succeeded: https://sss-berlin-18.vapor.cloud [Done] Successfully deployed. Cloud 1.0
94. Cloud Free hosting. Paid databases. 1.0
95. Cloud Free hosting. Paid databases. Free databases. 2.0
96. Cloud Custom Dockerfile. Instant scaling. No deploy queues. Rollback. 2.0
100. Cloud Backend built entirely on Vapor 3. 2.0
101. Swift Server Work Group NEW
102. swift.org/server
104. Swift Server Work Group NEW Packages. Mature ecosystem. Increase compatibility. Promote quality.
105. Swift Server Work Group NEW Federated approach.
106. Swift Server Work Group NEW 1. Propose
107. Swift Server Work Group NEW 1. Propose 2. Incubate
108. Swift Server Work Group NEW 1. Propose 2. Incubate 3. Graduate
109. Swift Server Work Group NEW ✅ Recommended
110. forums.swift.org
111. http://vapor.codes @codevapor
112. http://vapor.codes @codevapor Thank you
113. http://vapor.codes @codevapor Questions?