everything-as-code. eine vielsprachige reise. #javaland
TRANSCRIPT
Everything-as-code.Eine vielsprachige Reise.
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 1
#whoami
Mario-Leander ReimerCheftechnologe, QAware GmbH
4 Vollblut Entwickler && Architekt
4 #CloudNativeNerd
4 Open Source Enthusiast
[email protected]://github.com/lreimerhttp://speakerdeck.com/lreimer
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 2
Welche Sprache verwenden echte Programmierer?
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Meine #FirstSevenLanguages
4 Pascal
4 Basic
4 C / C++
4 Assembler
4 PHP
4 Java
4 C#
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Meine #LastSevenLanguages
4 Java
4 Groovy
4 TypeScript
4 Ruby
4 Kotlin
4 Scala
4 Go
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Es gibt keine einstimmige Meinung ...
4 http://spectrum.ieee.org/computing/software/the-2016-top-programming-languages
4 https://www.sitepoint.com/whats-best-programming-language-learn-2015/
4 https://jaxenter.de/programmiersprachen-rankings-q1-2017-54308
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Die beste Programmiersprache gibt es nicht!Auf den Kontext kommt es an.
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Die IDE ist unsere Werkbank.
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Unsere Definition von Software Industrialisierung
4 Hat nichts mit billiger Arbeitskraft zu tun!
4 Hoher Automatisiersgrad von arbeitsintensiven und wiederkehrenden Arbeitsschritten
4 Höhere Software-Qualität durch abgestimmte Tool-Chain
4 Mehr Produktivität und Zufriedenheit der Teams
4 Bessere Kosten-Effizienz und Wettbewerbsfähigkeit
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 13
Wäre es nicht cool wenn ...
open fun everythingAsCode() : Boolean { everytingIsMadeFromCode() && everythingIsMadeByCode()}
val softwareIndustrialization = everythingAsCode()
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 14
The Quest for an ideal Polyglot Project Archetype
4 Welche Sprachen werden in unseren Projekten verwendet?
4 Welche Tools verwenden wir für Setup, Build, Code, Test, CI, Infrastructure und Dokumentation?
4 Was davon hat sich bewährt und was eher nicht?
4 Gibt es bereits Best Practices für den Einsatz in der Praxis?
+ Wishful Greenfield Thinking!
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 15
SEU-as-code// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 16
Lightweight Developer Provisioning mit Gradle
4 [ SEU ] -> Software Entwicklungs Umgebung
4 Nutzung von Gradle als Build-Tool für das Setup und die Aktualisierung unserer Entwicklungsumgebungen
4 Software-Pakete werden als Dependencies ausgedrückt
4 Gradle Tasks and Groovy Skripte statt Shell-Scripting
4 Versionskontrolle der SEU Definition und Skripte
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 17
plugins { id 'de.qaware.seu.as.code.base' version '2.4.0' }
import static de.qaware.seu.as.code.plugins.base.Platform.isMac
seuAsCode { seuHome = { if (isMac()) '/Volumes/Everything-as-code' else 'Y:' } projectName = 'Everything-as-code'}
dependencies { // list of software dependencies ... software 'org.groovy-lang:groovy:2.4.7' software 'org.scala-lang:scala:2.11.8' software 'org.jruby:jruby:9.1.4.0'}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 18
Build-as-code// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 19
Maven ist gut. Gradle ist besser.
4 Sehr flexibel und vielseitig einsetzbar.
4 Einfache Unterstützung für Polyglotte Projekte.
4 Build Skripte sind maximal kurz und prägnant.
4 Drastisch reduzierte Build-Zeiten durch Incremental Builds.
4 Zahlreiche neue Features: Composite Builds, Kotlin-basierte Build-Skripte, Performance Verbesserungen, ...
4 Regelmäßige Releases. Stabil und ausgereift.
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apply plugin: 'application'apply plugin: 'war'apply plugin: 'kotlin'apply plugin: 'groovy'
repositories { jcenter() }
dependencies { providedCompile 'fish.payara.extras:payara-micro:4.1.1.163' // and many more ...}
task everythingAsCode() << { println 'Everything-as-code @ OOP 2017.'}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 21
Main-as-code// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 22
Java ist nach wie vor die primäre Implementierungssprache!Und das ist gut so!
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 23
Für die Mutigen: Kotlin als ernsthafte Alternative zu Java.
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Warum Kotlin? Und nicht Scala, Clojure, ...
4 Für Java Entwickler sehr schnell zu erlernen.
4 Sehr ausgewogene Universalsprache.
4 Null Safety + jede Menge andere nützliche Features.
4 JDK6 kompatibel. Kleine Library-Größe.
4 Sehr guter IDE Support.
4 Wishful Greenfield Thinking.
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 25
@JsonIgnoreProperties(ignoreUnknown = true)data class Book(val title: String, val isbn: String, val author: String) { }
@ApplicationScopedopen class Bookshelf { private val books = listOf(Book("The Hitchhiker's Guide to the Galaxy", "0345391802")) open fun byIsbn(isbn: String): Book? = books.find { it.isbn == isbn }}
@Path("books")@Produces(MediaType.APPLICATION_JSON)open class BookResource @Inject constructor(private val bookshelf: Bookshelf) { @GET @Path("/{isbn}") open fun byIsbn(@PathParam("isbn") isbn: String): Response { val book = bookshelf.byIsbn(isbn) return if (book != null) Response.ok(book).build() else Response.status(Status.NOT_FOUND).build() }}
@ApplicationPath("api")class BookstoreAPI : Application() { override fun getClasses() = hashSetOf(JacksonFeature::class.java, BookResource::class.java)}
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Frontend-as-code
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 27
Willkommen in der JavaScript Wunderwelt.
4 Ein Universum für sich!
4 Klarer Trend: Single Page Webapplikationen.
4 HTML5 + CSS3 + ?
4 ? = TypeScript oder
4 ? = ECMAScript2015 + Babel
4 Rückgrat des Builds: node + npm + webpack
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 28
Test-as-code// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 29
Groovy und Spock für Unit & Integration Tests
class BookshelfSpec extends Specification { @Subject def bookshelf = new Bookshelf()
@Unroll def "Find book #title by ISBN #isbn"() { when: 'we search a book by ISBN' def book = bookshelf.byIsbn(isbn)
then: 'the title and author are correct' book?.title == title book?.author == author
where: isbn || title | author "0345391802" || "The Hitchhiker's Guide to the Galaxy" | "Douglas Adams" "0345391829" || "Life, the Universe and Everything" | "Douglas Adams" }}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 30
Scala und Gatling für Last-Testsclass BooksPerformanceTest extends Simulation { val conf = http.baseURL("http://localhost:18080").acceptHeader("application/json")
val feeder = csv("books.csv").random
val scn = scenario("Book Search") .exec(http("Get all books").get("/api/books")) .during(30 seconds) { feed(feeder) .exec(http("Get book by title ${Title}").get("/api/books?title=${Title}")) .pause(1 second) .exec(http("Get book with ISBN ${ISBN}").get("/api/books/${ISBN}")) }
setUp(scn.inject(atOnceUsers(10), rampUsers(50) over (30 seconds))) .assertions(global.responseTime.max.lessThan(5000)) .protocols(conf)}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 31
Pipeline-as-code// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 32
Definition der Build-Pipeline per Jenkinsfile#!/usr/bin/env groovy
node { stage 'Checkout SCM' checkout scm
stage 'Build/Analyse/Test' sh './gradlew clean build' archiveUnitTestResults() archiveDistributions()
stage 'Dockerize' sh './gradlew buildDockerImage'
stage 'Generate Documentation' sh './gradlew asciidoctor'}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 33
Infrastructure-as-code
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 34
Docker, Docker, Docker, ...
FROM qaware-oss-docker-registry.bintray.io/base/debian8-jre8MAINTAINER M.-Leander Reimer <[email protected]>
RUN mkdir -p /appADD build/distributions/everything-as-code-1.2.0.tar /app
WORKDIR /app/everything-as-code-1.2.0RUN chmod 755 bin/everything-as-code
EXPOSE 18080
CMD ./bin/everything-as-code
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 35
Vagrant und Ruby zum Setup lokaler VMsrequire 'yaml'
$setup = <<SCRIPT sudo apt-add-repository ppa:ansible/ansible sudo apt-get update sudo apt-get install -y ansible sshpassSCRIPT
Vagrant.configure("2") do |config| config.vm.box = "ubuntu/trusty32"
settings = YAML.load_file 'src/vagrant/vagrant.yml' config.vm.provider "virtualbox" do |vb| vb.name = settings['vm']['name'] vb.gui = false vb.memory = "512" end
config.vm.provision "shell", inline: $setupend
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 36
Provisionierung mit Ansible (und Python)---# file: jenkinsci.yml- hosts: jenkinsci remote_user: root tasks: - debug: msg="Creating a Jenkins pipeline job on {{ inventory_hostname }}"
- jenkins_job: name: Everything-as-code Pipeline config: "{{ lookup('file', 'templates/pipeline-job.xml') }}" url: "http://{{ inventory_hostname }}" user: admin password: admin
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 37
Cluster Orchestration mit Kubernetes---apiVersion: extensions/v1beta1kind: Deploymentmetadata: name: everything-as-codespec: replicas: 3 template: metadata: labels: tier: backend spec: containers: - name: everything-as-code image: "qaware-oss-docker-registry.bintray.io/lreimer/everything-as-code:1.2.0" ports: - containerPort: 18080 env: - name: PORT value: 18080
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 38
Documentation-as-code
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 39
Ja, wir brauchen Dokumentation!
4 Und nein. Der Quellcode ist nicht genug!
4 Technische Dokumente mit Word sind ! " #
4 Dokumentation sollte neben dem Quellcode liegen: change code, change docs.
4 Schnell und einfach zu schreiben.
4 Unterstützung für Code, Bilder, Diagramme
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 40
// Beispiel Architektur-Dokumentation mit arc42 (https://arc42.github.io)
:imagesdir: ./images
= image:qaware-logo.png[QAware GmbH,2016] Everything-as-code:toc-title: Table of Contents:toc:
[[section-introduction-and-goals]]== Introduction and Goals
The introduction to the architecture documentation should list the driving forcesthat software architects must consider in their decisions.
=== Requirements Overview
=== Quality Goals
=== Stakeholders
<<<<include::02_architecture_constraints.adoc[]
// further includes for the remaining sections
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 41
AsciidoctorJ und Gradle to the Rescueplugins { id "org.asciidoctor.convert" version "1.5.3" }
asciidoctorj { version = '1.5.4.1' }
asciidoctor { sourceDir 'src/docs/architecture' resources { from('src/docs/architecture') { include 'images/**/*.png' include 'images/**/*.jpg' } } backends 'html5' options doctype: 'article' attributes 'source-highlighter': 'coderay'}
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 42
Presentation-as-code
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These slides were written in Markdown.---## [fit] These slides were written in Markdown.
- This is for real programmers! :smiley:- Several open source projects available- Use HTML and JavaScript alternatively.
---
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 44
Heutige Projekte sind vielsprachig.
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 45
Zeitgemäße Entwicklermüssen
vielsprachig sein!
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Wir alle müssen unsere Hausaufgaben machen.
4 Entwickler: Be polyglot, keep learning!
4 Architekten: Die richtige Sprache ist stark abhängig vom jeweiligen Projekt-Kontext. Choose wisely!
4 Project Managers: Give your techies freedom!
4 Universities: Unterrichtet vielsprachig!
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 47
Fork me on GitHub.https://github.com/lreimer/everything-as-code
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 48
We are hiring.http://www.qaware.de/karriere/#jobs
// JavaLand 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware } 49