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+ @claushoefele

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Server-Side Swift 2017 2016 Swift 2 Swift 3 Server APIs Work Group ? Swift.org

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Swift Server Projects Cross-platform Swift library Slack App Alexa Skill

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AlexaSkillsKit • Swift library to develop custom skills for Amazon Alexa • Cross-platform Swift • Development: macOS • Deployment: Linux

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Cross-Platform Swift Swift swiftc, lldb, SPM Standard Library Foundation Dispatch 3rd Party Swift Libraries C Libraries XCTest

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Example AlexaSkillsKit

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Example AlexaSkillsKit

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swiftenv swiftenv [--version] install Installs a version of Swift version Displays the current active Swift version versions Lists all installed Swift versions …

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Custom Toolchain

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Docker

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Docker Usage Container Image Dockerfile Registry Container build push run docker [OPTIONS] COMMAND [arg...]

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Docker Usage Cont’d #!/bin/bash set -e SWIFT_VERSION=$(<.swift-version) docker run \ --rm \ --volume "$(pwd):/app" \ --workdir /app \ swift:$SWIFT_VERSION \ swift test --build-path /.build

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Docker Usage Cont’d #!/bin/bash set -e SWIFT_VERSION=$(<.swift-version) docker run \ --rm \ --volume "$(pwd):/app" \ --workdir /app \ swift:$SWIFT_VERSION \ swift test --build-path /.build

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Docker Usage Cont’d #!/bin/bash set -e SWIFT_VERSION=$(<.swift-version) docker run \ --rm \ --volume "$(pwd):/app" \ --workdir /app \ swift:$SWIFT_VERSION \ swift test --build-path /.build

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Travis CI matrix: include: - os: osx osx_image: xcode8.3 sudo: required - os: linux dist: trusty sudo: required - os: linux dist: trusty sudo: required services: docker install: … script: … macOS Linux Docker (Linux)

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Does it work?

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Where are we Cross-platform Swift library Slack App Alexa Skill ✅

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WeGoBot

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WeGo Bot Architecture Kitura Kitura-net Environment Swift, Std Lib, Core Libs

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Calling URLSession.shared

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WeGo Bot Architecture Kitura BotService Spark Slack Kitura-net Environment Router Swift, Std Lib, Core Libs

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Docker Usage cont’d Container Image Dockerfile Registry Container } Swift Extend with custom app

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Dockerfile FROM swift:3.1 WORKDIR /app RUN apt-get update && apt-get install -y \ libssl-dev \ && rm -rf /var/lib/apt/lists/* COPY Package.swift ./ RUN swift package fetch; exit 0 EXPOSE 8090 COPY Sources ./Sources COPY Tests ./Tests RUN swift test CMD ./.build/debug/SwiftServer

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Dockerfile FROM swift:3.1 WORKDIR /app RUN apt-get update && apt-get install -y \ libssl-dev \ && rm -rf /var/lib/apt/lists/* COPY Package.swift ./ RUN swift package fetch; exit 0 EXPOSE 8090 COPY Sources ./Sources COPY Tests ./Tests RUN swift test CMD ./.build/debug/SwiftServer

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Dockerfile FROM swift:3.1 WORKDIR /app RUN apt-get update && apt-get install -y \ libssl-dev \ && rm -rf /var/lib/apt/lists/* COPY Package.swift ./ RUN swift package fetch; exit 0 EXPOSE 8090 COPY Sources ./Sources COPY Tests ./Tests RUN swift test CMD ./.build/debug/SwiftServer

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Dockerfile FROM swift:3.1 WORKDIR /app RUN apt-get update && apt-get install -y \ libssl-dev \ && rm -rf /var/lib/apt/lists/* COPY Package.swift ./ RUN swift package fetch; exit 0 EXPOSE 8090 COPY Sources ./Sources COPY Tests ./Tests RUN swift test CMD ./.build/debug/SwiftServer

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Dockerfile FROM swift:3.1 WORKDIR /app RUN apt-get update && apt-get install -y \ libssl-dev \ && rm -rf /var/lib/apt/lists/* COPY Package.swift ./ RUN swift package fetch; exit 0 EXPOSE 8090 COPY Sources ./Sources COPY Tests ./Tests RUN swift test CMD ./.build/debug/SwiftServer

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Deployment

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Tools Postman Docker Compose

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Does it Work?

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Where are we Cross-platform Swift library Slack App Alexa Skill ✅ ✅

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Alexa Skill Alexa Voice Service Alexa Skill

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AWS Lambda • Function as a Service, “Serverless” Architecture • Only pay for execution time • Event based • Stateless • Less server management

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Node.js child_process

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Lambda Execution Environment

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Dynamic Loading on Linux

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Does it work?

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Integration Tests

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Development Tools echosim.io ngrok

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Where are we Cross-platform Swift library Slack App Alexa Skill ✅ ✅ ✅

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Bridging the Gap CC BY 2.0 https://www.flickr.com/photos/ravi-shah/19806997920/

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Thanks AlexaSkillsKit swift-server-app swift-lambda-app @claushoefele