HackerTackle 2016/09/10の発表資料です。

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

4. Me and Fukuoka

5. ちょうど1年前まで住んでいました

6. Summary of Swift

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

15. Architecture
https://developer.apple.com/videos/play/
wwdc2016/415/

16. Architecture
https://developer.apple.com/videos/play/
wwdc2016/415/

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

18. Server Side Swift frameworks

20. https://github.com/PerfectlySoft/Perfect
Perfect

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

22. http://qutheory.io/
VAPOR

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

24. https://developer.ibm.com/swift/kitura/
KITURA

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

26. http://www.zewo.io/
Zewo

27. Zewo
• 豊富なパッケージ数
• BaseComponentsをVaporと入れ替えることができ
る
https://github.com/Zewo

28. https://github.com/necolt/Swifton
Swifton

29. https://github.com/necolt/Swifton
Swifton
• Ruby on Rails like

30. https://github.com/noppoMan/Slimane
Slimane

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

32. Environment construct

33. 今回のデモで採用

34. 8000 star over.

35. Perfect Template
https://github.com/PerfectlySoft/PerfectTemplate.git

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。

67. AMI
セキュリティグループのインバウンドにHTTPを
追加しておく

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

76. Happy Swift life!!

77. One more thing...

78. http://dev.classmethod.jp/news/
developers-io-2016-in-fukuoka/

79. http://dev.classmethod.jp/news/job-
fair-20161007/

80. ありがとうございました🙇