Pushing Swift to the Server

@Chris__Bailey | Swift@IBM #swiftsummit
Swift @ IBM Engineering Team
Chris Bailey(@Chris__Bailey)
November 7th, 2016
Pushing Swift to the Server

Why Swift on the Server?

Performant Applications
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)
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm

15.0
32.2
25.3
54.6
0.0
10.0
20.0
30.0
40.0
50.0
60.0

Low Memory
MemoryUsage(MB)
(lowerisbetter)
http://benchmarksgame.alioth.debian.org/u64q/performance.php?test=spectralnorm

Swift is ideal for Cloud

@Chris__Bailey | Swift@IBM #swiftsummit@Chris__Bailey | Swift@IBM #swiftsummit

MARS

1998 Mars Climate ORbiteR

DeC 11: Launch from Cape Canaveral1998 Mars Climate ORbiteR

DeC 11: Launch from Cape Canaveral

Sept 23rd: Lost Radio Contact

Sept 25th: Mission Declared a LOSS

PLANNED TRAJECTORY

PLANNED TRAJECTORY
TCM-4

PLANNED TRAJECTORY
TCM-4
226 KM

PLANNED TRAJECTORY
TCM-4
ACTUAL TRAJECTORY
226 KM

PLANNED TRAJECTORY
TCM-4
ACTUAL TRAJECTORY
226 KM
TCM-4

PLANNED TRAJECTORY
TCM-4
TCM-4 ACTUAL TRAJECTORY
226 KM

PLANNED TRAJECTORY
TCM-4
ACTUAL TRAJECTORY
226 KM
57 KM
TCM-4

Lockheed Martin 
Ground SoftwareNasa Jet Propulsion Laboratory 
Trajectory Calculation Software

Lockheed Martin 
Ground Software
Nasa Jet Propulsion Laboratory 
Trajectory Calculation Software
SIS 
(Software Interface Speciﬁcation)
Total Impulse
pounds-seconds
(United States Customary Unit)
newton-seconds
(International System of Units)
11.488

“Software interop is hard”

“Software interop is hard”
—Rocket Scientists

Siloed Development
API 
Specification
Collaborate
on API
Collaborate
on API
Create
Deploy
Create
Deploy

Collaborate
on Project
Collaborate
on Project
Collaborative Development
Deploy DeployGenerate
API 
Specification

Swift Development
Collaborate on
Swift Project
Deploy DeployGenerate
Swagger API 
Specification
Collaborate on
Swift Project

Collaboratively Building 
Applications

December 3rd, 2015
Apache 2.0 Software Licence
Swift Everywhere

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

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

 
Swift on the Server is Real
Swift 3.0 + Kitura 1.0

Let’s take a tour…

Create an Application
First, create a new project directory:
$ mkdir myFirstProject
Next, create a new Swift project using the Swift Package Manager.
$ cd myFirstProject
$ swift package init —-type executable
In Package.swift, add Kitura as a dependency for your project.
import PackageDescription
let package = Package(
name: "myFirstProject",
dependencies: [
.Package(url: "https://github.com/IBM-Swift/Kitura.git", majorVersion: 1, minor: 0)
])

Create an Application
In Sources/main.swift, add the following code.
import Kitura
// Create a new router
let router = Router()
// Handle HTTP GET requests to /
router.get("/") {
request, response, next in
response.send("Hello, World!")
next()
}
// Add an HTTP server and connect it to the router
Kitura.addHTTPServer(onPort: 8090, with: router)
// Start the Kitura runloop (this call never returns)
Kitura.run()

Deploy an Application
Open your browser at http://localhost:8090
Compile and run your application:
$ swift build
$ .build/debug/myFirstProject

Demo

Use Services

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

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

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

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

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

Swift

Swift
For safer missions to Mars

Pushing Swift to the Server

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