Server Side? Swift - Speaker Deck

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ɹ2016/09/10 H-LANE #hackt_h HACKER TACKLE Server Side? Swift

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About Me

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• ాத ޹໌ (Takaaki Tanaka) • Ϋϥεϝιουגࣜձࣾ • iOS ΞϓϦέʔγϣϯΤϯδχΞ • @kongmingtrap • iOS Developer (Swift / Objective-C) • GyazSquare / GitHub

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Me and Fukuoka

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ͪΐ͏Ͳ1೥લ·ͰॅΜͰ͍·ͨ͠

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Summary of Swift

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Swift Swift is a powerful and intuitive programming language for macOS, iOS, watchOS and tvOS. Writing Swift code is interactive and fun, the syntax is concise yet expressive, and Swift includes modern features developers love. Swift code is safe by design, yet also produces software that runs lightning-fast.

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History of Swift • 0.x (2014/06) • 1.0 (2014/09) • 1.1 (2014/10) • 1.2 (2015/02) • 2.0 (2015/06) • 2.1 (2015/10) • 2.2 (2016/03) • 3.0 (2016/09)

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History of Swift • 0.x (2014/06) • 1.0 (2014/09) • 1.1 (2014/10) • 1.2 (2015/02) • 2.0 (2015/06) • 2.1 (2015/10) • 2.2 (2016/03) • 3.0 (2016/09) ᴈ໌ظ

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History of Swift • 0.x (2014/06) • 1.0 (2014/09) • 1.1 (2014/10) • 1.2 (2015/02) • 2.0 (2015/06) • 2.1 (2015/10) • 2.2 (2016/03) • 3.0 (2016/09) ੒௕ظ

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History of Swift • 0.x (2014/06) • 1.0 (2014/09) • 1.1 (2014/10) • 1.2 (2015/02) • 2.0 (2015/06) • 2.1 (2015/10) • 2.2 (2016/03) • 3.0 (2016/09) શ੝ظ

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[swift-evolution] Looking back on Swift 3 and ahead to Swift 4 https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160725/025676.html "#*҆ఆԽͳͲɺ4XJGUͰ࣮૷༧ఆͩͬ ͨػೳ͕ݟૹΒΕɺ4XJGU·Ͱ࣋ͪӽ ͞ΕΔɻɻɻ

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Swift is Open Source IUUQTEFWFMPQFSBQQMFDPNTXJGUCMPH JE

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(PJOH4FSWFSTJEFXJUI4XJGU0QFO4PVSDF IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZ XXED WWDC2016

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Architecture IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZ XXED

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Architecture IUUQTEFWFMPQFSBQQMFDPNWJEFPTQMBZ XXED

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Agenda • Server Side Swift frameworks • Environment construct • Make • Deploy

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Server Side Swift frameworks

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IUUQTHJUIVCDPN1FSGFDUMZ4PGU1FSGFDU Perfect

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Perfect w 4XJGUʹ͓͚Δ`3BJMT`ͷཱͪҐஔΛ໨ࢦ͢ w ๛෋ͳ%#઀ଓϥΠϒϥϦ w .VTUBDIFςϯϓϨʔτ w 'BTU$(*BQBDIFPS/HJOY

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IUUQRVUIFPSZJP VAPOR

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VAPOR w -BSBWBMMJLF w γϯϓϧʹهड़Ͱ͖Δ͜ͱΛ໨ࢦ͢ w υΩϡϝϯτ͕ஸೡʹ·ͱΊΒΕ͍ͯΔ IUUQTHJUIVCDPNWBQPSWBQPS

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IUUQTEFWFMPQFSJCNDPNTXJGULJUVSB KITURA

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KITURA w *#.੡ w *#.ͷΫϥ΢υϓϥοτϑΥʔϜ#MVFNJY͕4XJGUʹର Ԡ w αϯυϘοΫεͰࢼ͢͜ͱ͕Ͱ͖Δ w 4XJGUؔ࿈ͷऔΓ૊Έ΋೤৺ IUUQTHJUIVCDPN*#.4XJGU

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IUUQXXX[FXPJP Zewo

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IUUQTHJUIVCDPNOFDPMU4XJGUPO Swifton

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IUUQTHJUIVCDPNOFDPMU4XJGUPO Swifton w 3VCZPO3BJMTMJLF

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IUUQTHJUIVCDPNOPQQP.BO4MJNBOF Slimane

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Environment construct

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ࠓճͷσϞͰ࠾༻

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TUBSPWFS

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Perfect Template IUUQTHJUIVCDPN1FSGFDUMZ4PGU1FSGFDU5FNQMBUFHJU

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Build 9DPEFPSMBUFS 049&M$BQUBO

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$ swift —version Apple Swift version 3.0 (swiftlang-800.0.43.6 clang-800.0.38) Target: x86_64-apple-macosx10.9 $ xcode-select --switch /Applications/Xcode.app/Contents/Developer Build

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$ brew install openssl $ brew link openssl --force Build $ git clone https://github.com/PerfectlySoft/PerfectTemplate.git $ cd PerfectTemplate $ swift build $ .build/debug/PerfectTemplate

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No content

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// Create HTTP server. let server = HTTPServer() // Register your own routes and handlers var routes = Routes() // Add the routes to the server. server.addRoutes(routes) // Set a listen port of 8181 server.serverPort = 8181 // Set a document root. // This is optional. If you do not want to serve static content then do not set this. // Setting the document root will automatically add a static file handler for the route /** server.documentRoot = "./webroot" // Gather command line options and further configure the server. // Run the server with --help to see the list of supported arguments. // Command line arguments will supplant any of the values set above. configureServer(server) do { // Launch the HTTP server. try server.start() } catch PerfectError.networkError(let err, let msg) { print("Network error thrown: \(err) \(msg)") } Server Start

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Make

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Router // list routes.add(method: .get, uri: "/list", handler: listHandler) // login routes.add(method: .post, uri: "/login", handler: loginHandler) // get message routes.add(method: .get, uri: "/message", handler: getMessageHandler) // post message routes.add(method: .post, uri: "/message", handler: postMessageHandler) IUUQTHJUIVCDPN1FSGFDUMZ4PGU1FSGFDU&YBNQMF 63-3PVUJOH

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GET Method // listHandler func listHandler(request: HTTPRequest, _ response: HTTPResponse) { defer { response.completed() } response.setHeader(.contentType, value: "application/json") do { let listArray: [String : Any] = [ "name1": 300, "name2": 230.45, "name3": 150 ] try response.setBody(json: listArray) } catch let error as NSError { print(error) } }

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GET Method curl -v -H "Accept: application/json" -H "Content-type: application/json" - X GET http://0.0.0.0:8181/list * Trying 0.0.0.0... * Connected to 0.0.0.0 (127.0.0.1) port 8181 (#0) > GET /list HTTP/1.1 > Host: 0.0.0.0:8181 > User-Agent: curl/7.43.0 > Accept: application/json > Content-type: application/json > < HTTP/1.1 200 OK < Content-Type: application/json < Connection: Keep-Alive < Content-Length: 40 < * Connection #0 to host 0.0.0.0 left intact {"name1":300,"name2":230.45,"name3":150}

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GET Method // check thread let thread = Thread.current print(thread) [INFO] Starting HTTP server on 0.0.0.0:8181 with document root ./webroot {number = 2, name = (null)} {number = 3, name = (null)} {number = 4, name = (null)} શͯͷϦΫΤετ͕ผͷ5ISFBEͰ࣮ߦ͞ Ε͍ͯΔ͜ͱ͕Θ͔Δ

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POST Method // loginHandler func loginHandler(request: HTTPRequest, _ response: HTTPResponse) { defer { response.completed() } do { let json = try request.postBodyString?.jsonDecode() response.setHeader(.contentType, value: "application/json") guard let decoded = json as? [String : Any] else { return } let result: [String : Any] = decoded["user"].map { ["result": true, "user": $0] } ?? ["result": false] try response.setBody(json: result) } catch let error as NSError { print(error) } }

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POST Method curl -v -H "Accept: application/json" -H "Content-type: application/json" - X POST -d '{"user": "tana"}' http://0.0.0.0:8181/login * Trying 0.0.0.0... * Connected to 0.0.0.0 (127.0.0.1) port 8181 (#0) > POST /login HTTP/1.1 > Host: 0.0.0.0:8181 > User-Agent: curl/7.43.0 > Accept: application/json > Content-type: application/json > Content-Length: 16 > * upload completely sent off: 16 out of 16 bytes < HTTP/1.1 200 OK < Content-Type: application/json < Connection: Keep-Alive < Content-Length: 29 < * Connection #0 to host 0.0.0.0 left intact {"result":true,"user":"tana"}

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Database

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let package = Package( name: "PerfectTemplate", targets: [], dependencies: [ .Package( url: "https://github.com/PerfectlySoft/ Perfect-PostgreSQL.git", versions: Version(0,0,0)..

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create table message ( id serial primary key, message text, created_at timestamp with time zone, updated_at timestamp with time zone ); w DSFBUFNFTTBHFUBCMF Create Table

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GET Method // get message routes.add(method: .get, uri: "/message", handler: { request, response in defer { response.completed() } do { response.setHeader(.contentType, value: "application/json") let connection = PGConnection() let status = connection.connectdb(db) let result = connection.exec( statement: "select * FROM message order by updated_at desc") … // DB let db = "postgresql://samplefuku:fukuoka@localhost:5432/exampledb"

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GET Method … let num = result.numTuples() let messages: [[String : Any]] = (0..

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POST Method // post message routes.add(method: .post, uri: "/message", handler: { request, response in defer { response.completed() } do { let json = try request.postBodyString?.jsonDecode() response.setHeader(.contentType, value: “application/json") guard let decoded = json as? [String : Any] else { return } …

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POST Method … let result: [String : Any] = decoded["message"].map { message in let connection = PGConnection() let status = connection.connectdb(db) let date = Date() let createdAt = RFC3339DateFormatter.string(from: date) let updatedAt = RFC3339DateFormatter.string(from: date) let result = connection.exec( statement: "insert into message (message, created_at, updated_at) values($1, $2, $3)", params: ["\(message)", "\(createdAt)", "\(updatedAt)"]) result.clear() connection.close() return ["message" : message] } ?? [:] try response.setBody(json: result) …

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Demo

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Deploy

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IUUQQFSGFDUPSHIFSPLVCVJMEQBDLGPSQFSGFDUBOE TXJGUIUNM Heroku Buildpack for Perfect and Swift

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IUUQQFSGFDUPSHBXTCVJMEQBDLGPSQFSGFDUBOE TXJGUIUNM AWS Buildpack for Perfect and Swift

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AMI ηΩϡϦςΟάϧʔϓͷΠϯό΢ϯυʹ)551Λ ௥Ճ͓ͯ͘͠

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AMI $ sudo ssh -i ~/.ssh/xxxxx.pem [email protected]

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AMI $ wget https://swift.org/builds/development/ubuntu1510/swift-DEVELOPMENT- SNAPSHOT-2016-08-26-a/swift-DEVELOPMENT-SNAPSHOT-2016-08-26-a-ubuntu15.10.tar.gz $ tar xzf swift-DEVELOPMENT-SNAPSHOT-2016-08-26-a-ubuntu15.10.tar.gz IUUQTTXJGUPSHEPXOMPBEVTJOHEPXOMPBET ".*ʹΠϯετʔϧ͞Ε͍ͯΔͷ͕4XJGUͷͨΊɺ Ϗϧυ͢ΔͨΊʹαϙʔτ͞Ε͍ͯΔ4XJGUͷ 4/"14)05Λऔಘ͢Δ $ export PATH=./swift-DEVELOPMENT-SNAPSHOT-2016-08-26-a-ubuntu15.10/usr/bin:"$ {PATH}"

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Build & Run $ cd PerfectTemplate $ swift build $ .build/debug/PerfectTemplate

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Demo

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Appendix

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Call Shell // Commandline func command(launchPath: String, arguments: [String]) -> String { let task = Process() task.launchPath = launchPath task.arguments = arguments let pipe = Pipe() task.standardOutput = pipe task.launch() let data = pipe.fileHandleForReading.readDataToEndOfFile() let output = String( data: data, encoding: String.Encoding.utf8)! return output } let cl = command(launchPath: "/bin/echo", arguments: ["aaaa"])

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Recap

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