The addition of support for Swift as a server-side programming language makes it possible to use not just the same language on client and server, but also to reuse APIs and code. This opens up a world of possibilities for creating and deploying new types of applications. This session will introduce you to new models of client and server interaction for application development, and show you how to rapidly build an app with both client and server components written in Swift. Presented at FrenchKit: September 2016

1. Swift @ IBM Engineering Team
Chris Bailey(@Chris__Bailey)
September 23rd, 2016
End to End Application Development
Swift @ IBM

2. User-facing
Client Apps
Modern Application Design
App Services
3rd Party Services
On Prem Services
End Users
Swift @ IBM

3. Modern Application Design
End Users User-facing
Client Apps
App Services
On Prem Services
3rd Party Services
Swift @ IBM

4. Modern Application Design
End Users User-facing
Client Apps
App Services
On Prem Services
3rd Party Services
Developer Experience
Integrated
Swift @ IBM

5. Why Swift on the Server?
Swift @ IBM

6. 4.0
0.0
20.0
40.0
60.0
80.0
100.0
120.0
Performant Applications
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Duration(s)
(lowerisbetter)
Swift @ IBM

7. 4.0 4.3
0.0
20.0
40.0
60.0
80.0
100.0
120.0
Performant Applications
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Duration(s)
(lowerisbetter)
Swift @ IBM

8. 4.0 4.3
15.8
0.0
20.0
40.0
60.0
80.0
100.0
120.0
Performant Applications
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
Duration(s)
(lowerisbetter)
Swift @ IBM

9. Performant Applications
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
4.0 4.3
15.8
134.2
0.0
20.0
40.0
60.0
80.0
100.0
120.0
Duration(s)
(lowerisbetter)
Swift @ IBM

10. 15.0
0.0
10.0
20.0
30.0
40.0
50.0
60.0
Low Memory
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
MemoryUsage(MB)
(lowerisbetter)
Swift @ IBM

11. 15.0
32.2
0.0
10.0
20.0
30.0
40.0
50.0
60.0
Low Memory
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
MemoryUsage(MB)
(lowerisbetter)
Swift @ IBM

12. 15.0
32.2
25.3
0.0
10.0
20.0
30.0
40.0
50.0
60.0
Low Memory
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
MemoryUsage(MB)
(lowerisbetter)
Swift @ IBM

13. 15.0
32.2
25.3
54.6
0.0
10.0
20.0
30.0
40.0
50.0
60.0
Low Memory
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm
MemoryUsage(MB)
(lowerisbetter)
Swift @ IBM

14. Swift is ideal for Cloud
Swift @ IBM

15. Isomorphic Development
Swift @ IBM
Create Swift Project

16. Isomorphic Development
Swift @ IBM
Create Swift Project
Deploy Deploy

17. Isomorphic Development
Swift @ IBM
Create Swift Project
Deploy DeployGenerate
Swagger API
Specification
• Program in Swift on client and server
• Share code on both sides
• Automatically created Swagger APIs

18. Sharing tools and technologies
Swift @ IBM

19. How does this happen?
Swift @ IBM

20. Extend Swift to the server
Swift on the Server can attract Swift-
based Developers
Swift @ IBM

21. December 3rd, 2015
Apache 2.0 Software Licence
Open Source Swift

22. Linux PlatformsDarwin Platforms
Swift on Linux
Swift @ IBM
Swift
Standard
Library
Foundation Dispatch
Swift
Standard
Library
Foundation Dispatch
Consistent
Runtime across
Platforms

23. Add a Web Framework

24. Kitura: A Swift Web Framework and HTTP Server
http://kitura.io
Swift @ IBM

25. Server / Cloud DeploymentServer / Cloud DeploymentApple Client Deployment
Client Facing App
Client-Specific
Libraries
Kitura Web Framework
Swift @ IBM
Swift
Standard
Library
Foundation Dispatch
Swift
Standard
Library
Foundation Dispatch
Networking
Security
HTTPParsing
Application
Libraries
Application Specific Cloud Services
Server-Specific Libraries
Consistent
Runtime across
Clients/Servers
Kitura-based Server!
Built with Dispatch &
Foundation
Application
Libraries

26. Server / Cloud DeploymentServer / Cloud DeploymentApple Client Deployment
Client Facing App
Client-Specific
Libraries
Kitura Web Framework
Swift @ IBM
Swift
Standard
Library
Foundation Dispatch
Swift
Standard
Library
Foundation Dispatch
Networking
Security
HTTPParsing
Application
Libraries
Application Specific Cloud Services
Server-Specific Libraries
Consistent
Runtime across
Clients/Servers
Kitura-based Server!
Built with Dispatch &
Foundation
Swift
“Server”
APIs
Application
Libraries

27.
Swift on the Server is Real
Swift 3.0 + Kitura 1.0
Swift @ IBM

28. Let’s take a tour…
Swift @ IBM

29. Architecture
Web Framework
Source
Swift Binary
Dispatch
Foundation
Package Manager
Swift Libraries
SwiftyJSON
SwiftMongoDB
C Helpers
& Interfaces
C Libraries
HttpParser
HiRedis
CURL
PCRE2
Pluggable
Components

30. Architecture
Web Framework
Source
Swift Binary
Dispatch
Foundation
Package Manager
Swift Libraries
SwiftyJSON
SwiftMongoDB
C Helpers
& Interfaces
C Libraries
HttpParser
HiRedis
CURL
PCRE2
Pluggable
Components
Swift Libraries
Server APIs

31. Create an Application
First, create a new project directory
Next, create a new Swift project using the Swift Package Manager.
In Package.swift, add Kitura as a dependency for your project.

32. Create an Application
In Sources/main.swift, add the following code.

33. Deploy an Application
Open your browser at http://localhost:8090
Compile and run your application:

34. Use Services

35. Deploy to Cloud
$ docker pull ibmcom/kitura-ubuntu:latest $ git clone https://github.com/IBM-Swift/
Kitura-Starter-Bluemix

36. Using Cloud Tools
http://cloudtools.bluemix.net
• Deployment made easy
• Clone, code, push
• Demo projects to try

37. http://www.kitura.io/en/resources/tutorials.html
Tutorials
• Creating a Todo-List Backend
• Adding Authentication with Kitura-Credentials
• Adding Sessions with Kitura-Session
• Using Templating Engines with Kitura
• Enabling SSL/TLS on Kitura
• Using FastCGI with Kitura
• Special Types of Response Handlers
• Parsing Requests

38. Examples
Blitter Social Network
https://github.com/ibm-swift/blitter
BluePic Application
https://github.com/ibm-swift/bluepic

39. Discover Try
Build
IBM Cloud Tools
Package Catalog Swift Sandbox
Kitura + Packages
DeploySwift @ IBM
Swift @ IBM
https://developer.ibm.com/swift/

40. Thank you!
Swift @ IBM