Server Side? Swift
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This document discusses server-side Swift frameworks and deploying a Swift server application. It begins with an introduction to popular server-side Swift frameworks like Perfect, Vapor, Kitura, and Zewo. It then demonstrates building a simple REST API using the Perfect framework, including defining routes and handlers for GET and POST requests. It also shows connecting to a PostgreSQL database and performing queries. The document concludes by discussing deploying the Swift server application.
![[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
ABI安定化など、Swift 3.0で実装予定だっ
た機能が見送られ、Swift 4.0まで持ち越
される。。。](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-12-320.jpg)
![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)
}
}](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-47-320.jpg)
![GET Method
// check thread
let thread = Thread.current
print(thread)
[INFO] Starting HTTP server on 0.0.0.0:8181 with document root ./webroot
<NSThread: 0x7fab61c15530>{number = 2, name = (null)}
<NSThread: 0x7fab61e06cd0>{number = 3, name = (null)}
<NSThread: 0x7fab61f05290>{number = 4, name = (null)}
全てのリクエストが別のThreadで実行さ
れていることがわかる](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-49-320.jpg)
![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)
}
}](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-50-320.jpg)
![let package = Package(
name: "PerfectTemplate",
targets: [],
dependencies: [
.Package(
url: "https://github.com/PerfectlySoft/
Perfect-PostgreSQL.git",
versions: Version(0,0,0)..<Version(10,0,0))
]
)
Postgresql
プロジェクト直下のpackage.swiftに
Perfect-PostgresSQLを追加する](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-56-320.jpg)
![GET Method…
let num = result.numTuples()
let messages: [[String : Any]] = (0..<num).map { x in
let t1 = result.getFieldString(tupleIndex: x, fieldIndex: 0)
let t2 = result.getFieldString(tupleIndex: x, fieldIndex: 1)
let t3 = result.getFieldString(tupleIndex: x, fieldIndex: 2)
let t4 = result.getFieldString(tupleIndex: x, fieldIndex: 3)
let message: [String : Any] = [
"id" : t1,
"message" : t2,
"created_at" : t3,
"updated_at" : t4
]
return message
}
result.clear()
connection.close()
try response.setBody(json: ["messages" : messages])
} catch let error as NSError {
print(error)
}
})](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-59-320.jpg)
![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 }
…](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-60-320.jpg)
![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)
…](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-61-320.jpg)
![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"])](https://image.slidesharecdn.com/hackertackle-160912111843/85/Server-Side-Swift-73-320.jpg)
Server Side? Swift
- 1. 2016/09/10 H-LANE #hackt_h HACKER TACKLE Server Side? Swift
- 2. About Me
- 3. • 田中 孝明 (Takaaki Tanaka) • クラスメソッド株式会社 • iOS アプリケーションエンジニア • @kongmingtrap • iOS Developer (Swift / Objective-C) • GyazSquare / GitHub
- 7. 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.
- 8. 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)
- 9. 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) 黎明期
- 10. 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) 成長期
- 11. 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) 全盛期
- 12. [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 ABI安定化など、Swift 3.0で実装予定だっ た機能が見送られ、Swift 4.0まで持ち越 される。。。
- 13. Swift is Open Source https://developer.apple.com/swift/blog/?id=34
- 14. Going Server-side with Swift Open Source https://developer.apple.com/videos/play/ wwdc2016/415/ WWDC2016
- 17. Agenda • Server Side Swift frameworks • Environment construct • Make • Deploy
- 18. Server Side Swift frameworks
- 21. Perfect • Swift における Rails の立ち位置を目指す • 豊富なDB接続ライブラリ • Mustacheテンプレート • FastCGI + apache2 or Nginx
- 23. VAPOR • Laraval like • シンプルに記述できることを目指す • ドキュメントが丁寧にまとめられている https://github.com/vapor/vapor
- 25. KITURA • IBM製 • IBMのクラウドプラットフォームBluemixがSwiftに対 応 • サンドボックスで試すことができる • Swift関連の取り組みも熱心 https://github.com/IBM-Swift
- 31. https://github.com/noppoMan Slimane • expressにインスパイア • マイクロフレームワーク＋HTTPサーバー • Yuki Takeiさん作成
- 33. 今回のデモで採用
- 34. 8000 star over.
- 36. Build Xcode 8.0 or later OS X El Captan (10.11.6)
- 37. $ 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
- 38. $ brew install openssl $ brew link openssl --force Build $ git clone https://github.com/PerfectlySoft/PerfectTemplate.git $ cd PerfectTemplate $ swift build $ .build/debug/PerfectTemplate
- 40. // 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
- 41. // 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
- 42. // 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
- 43. // 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
- 44. // 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
- 45. Make
- 46. 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) https://github.com/PerfectlySoft/PerfectExample- URLRouting
- 47. 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) } }
- 48. 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}
- 49. GET Method // check thread let thread = Thread.current print(thread) [INFO] Starting HTTP server on 0.0.0.0:8181 with document root ./webroot <NSThread: 0x7fab61c15530>{number = 2, name = (null)} <NSThread: 0x7fab61e06cd0>{number = 3, name = (null)} <NSThread: 0x7fab61f05290>{number = 4, name = (null)} 全てのリクエストが別のThreadで実行さ れていることがわかる
- 50. 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) } }
- 51. 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"}
- 52. Database
- 54. • Perfect Redis • Perfect SQLite • Perfect PostgreSQL • Perfect MySQL • Perfect MongoDB • Perfect FileMaker DB Connector
- 55. • Perfect Redis • Perfect SQLite • Perfect PostgreSQL • Perfect MySQL • Perfect MongoDB • Perfect FileMaker DB Connector https://github.com/PerfectlySoft/Perfect-PostgreSQL
- 56. let package = Package( name: "PerfectTemplate", targets: [], dependencies: [ .Package( url: "https://github.com/PerfectlySoft/ Perfect-PostgreSQL.git", versions: Version(0,0,0)..<Version(10,0,0)) ] ) Postgresql プロジェクト直下のpackage.swiftに Perfect-PostgresSQLを追加する
- 57. create table message ( id serial primary key, message text, created_at timestamp with time zone, updated_at timestamp with time zone ); • create message table Create Table
- 58. 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"
- 59. GET Method… let num = result.numTuples() let messages: [[String : Any]] = (0..<num).map { x in let t1 = result.getFieldString(tupleIndex: x, fieldIndex: 0) let t2 = result.getFieldString(tupleIndex: x, fieldIndex: 1) let t3 = result.getFieldString(tupleIndex: x, fieldIndex: 2) let t4 = result.getFieldString(tupleIndex: x, fieldIndex: 3) let message: [String : Any] = [ "id" : t1, "message" : t2, "created_at" : t3, "updated_at" : t4 ] return message } result.clear() connection.close() try response.setBody(json: ["messages" : messages]) } catch let error as NSError { print(error) } })
- 60. 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 } …
- 61. 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) …
- 62. Demo
- 63. Deploy
- 64. http://perfect.org/heroku-buildpack-for-perfect-and- swift.html Heroku Buildpack for Perfect and Swift
- 65. http://perfect.org/aws-buildpack-for-perfect-and- swift.html AWS Buildpack for Perfect and Swift
- 66. AMI AWSのマネージメントコンソールにログインし、 EC2のAMIから「us-east-1」リージョンにある パブリックイメージから「perfect-ubuntu-1510」を 検索します。
- 68. AMI $ sudo ssh -i ~/.ssh/xxxxx.pem ubuntu@xx.xxx.xx.xxx
- 69. 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 https://swift.org/download/#using-downloads AMIにインストールされているのがSwift 2.2のため、 ビルドするためにサポートされているSwift 3.0の SNAPSHOTを取得する $ export PATH=./swift-DEVELOPMENT-SNAPSHOT-2016-08-26-a-ubuntu15.10/usr/bin:"$ {PATH}"
- 70. Build & Run $ cd PerfectTemplate $ swift build $ .build/debug/PerfectTemplate
- 71. Demo
- 72. Appendix
- 73. 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"])
- 74. Recap
- 75. • 絶賛発展途上 • クライアントサイドの開発者もWebAPI の開発を経験しやすくなった • コミッターになりやすい Recap
- 80. ありがとうございました🙇