The document provides information about Mario-Leander Reimer, a senior developer and architect at QAware GmbH. It discusses his experience building software solutions using everything-as-code principles across multiple programming languages and tools. The document is presented as a slide deck advocating an everything-as-code approach to software development.

2. #whoami
Mario-Leander Reimer
Cheftechnologe, QAware GmbH
- Senior Developer && Architect
- 20+ Jahre Erfahrung
- #CloudNativeNerd
- Open Source Enthusiast
mario-leander.reimer@qaware.de
http://github.com/lreimer
http://speakerdeck.com/lreimer
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

4. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

5. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

6. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

8. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

9. Software Industrialization
ist eine Schlüsselanforderung
für erfolgreiches DevOps und
Continuous Delivery.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

10. Ein Software-Fließband produziert
und liefert die fertige Software an.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

11. Software Industrialisierung bedeutet ...
• Hoher Automatisiersgrad von arbeitsintensiven
und wiederkehrenden Arbeitsschritten
• Bessere Software-Qualität durch eine
abgestimmte Tool-Chain
• Mehr Produktivität und Zufriedenheit der Teams
• Kosten-Effizienz und Wettbewerbsfähigkeit
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

12. Die IDE ist unsere
Werkbank.

13. val softwareIndustrialization = everythingAsCode()
open fun everythingAsCode() =
everythingIsMadeFromCode()
&& everythingIsMadeByCode()
private fun everythingIsMadeFromCode() = true
private fun everythingIsMadeByCode() = true
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

14. Auf die Domäne kommt es an!
Eine beste Programmiersprache gibt es nicht.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

15. Die Queste nach dem idealen Polyglot Project Archetype
• Welche Sprachen werden in unseren Projekten in
welchen Domänen verwendet?
• Welche Tools verwenden wir für Setup, Build, Code,
Test, CI, Infrastructure, Documentation?
• Was davon hat sich bewährt und was eher nicht?
• Gibt es bereits Best Practices oder Anti-Patterns?
+ Wishful Greenfield Thinking!
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

16. Eine vielsprachige
Reise beginnt ...

18. Lightweight Developer Provisioning mit Gradle
• [ SEU ] -> Software Entwicklungs Umgebung
• Nutzung von Gradle als Build-Tool für das Setup und
die Aktualisierung unserer Entwicklungsumgebungen
• Software-Pakete werden als Dependencies definiert
• Gradle Tasks und Groovy Code statt Shell-Scripting
• Versionskontrolle der SEU Definition und Skripte
• Open Source. http://seu-as-code.io
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

19. 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'
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

21. # language: en
Functionality: Authentication and Authorization
Scenario Outline: Check proper login behaviour
Given the username "<USERNAME>"
And the password "<PASSWORD>"
When the user logs into the system
Then the login result is "<RESULT>"
Examples: Login data
| USERNAME | PASSWORD | RESULT |
| mario-leander.reimer | invalidpwd | failure |
| unknown | somepwd | failure |
| mario-leander.reimer | correctpwd | success |
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

22. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

24. Maven ist gut. Gradle ist 100x schneller.
• Sehr flexibel und vielseitig einsetzbar.
• Einfache Unterstützung für polyglotte Projekte.
• Build Skripte sind maximal kurz und prägnant.
• Deutlich reduzierte Build-Zeiten durch inkrementelle
Builds und Caching
• Zahlreiche neue Features: Composite Builds, Kotlin-
basierte Build-Skripte, Performance Verbesserungen, ...
• Regelmäßige Releases. Stabil und ausgereift.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

25. apply plugin: 'application'
apply plugin: 'war'
apply plugin: 'kotlin'
apply plugin: 'groovy'
repositories { jcenter() }
dependencies {
providedCompile 'fish.payara.extras:payara-micro:4.1.1.164'
// and many more ...
}
task everythingAsCode() << {
println 'Everything-as-code using Gradle @ ContinuousLifecycle 2017.'
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

27. Java ist nach wie vor unsere
primäre Implementierungssprache!
Und das ist gut so!
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

28. Aber:
Kotlin als Alternative zu
Java ist einen Blick wert!
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

29. Warum Kotlin? Und nicht Scala, Clojure, ...
• Für Java Entwickler sehr schnell zu erlernen.
• Sehr ausgewogene Universalsprache.
• Null Safety + Synatctic Sugar + jede Menge
andere nützliche Features.
• JDK6 kompatibel. Kleine Library-Größe.
• Sehr guter IDE und Tool Support.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

30. @JsonIgnoreProperties(ignoreUnknown = true)
data class Book(val title: String, val isbn: String, val author: String)
@ApplicationScoped
open 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)
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

32. Willkommen in der JavaScript Wunderwelt.
• Ein Universum für sich!
• Klarer Trend: Single Page Webapplikationen.
• HTML5 + CSS3 + ?
• ? = TypeScript oder
• ? = ECMAScript2015 + Babel
• Rückgrat des Builds: node + npm + webpack
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

34. Grovy + Spock eignen sich für Unit,
Integration, Acceptance und UI-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"
}
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

35. Scala und Gatling für lesbare und
performante Last-Tests
class 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)
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

37. Definition einer Build-Pipeline per
Jenkinsfile und Groovy
#!/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'
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

38. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

40. Architektur-Definition und Prüfung
mit QAvalidator für wartbaren Code.
architecture(name: "Mail Example", prefix: "tview", reflexMLversion: "1.0") {
excludes "java.lang.*"
api "JavaMail" : "javax.mail.*"
component "Mail" {
api "IMail" : "de.qaware.mail.*"
impl ["de.qaware.mail.impl.*", "de.qaware.mail.impl2.*"]
uses "JavaMail"
component "MailSender" {
api ["de.qaware.mail.sender.*", "javax.mail.*"]
impl "de.qaware.mail.impl.javamail.JavaMailSender"
uses "JavaMail"
}
}
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

42. Docker, Docker, Docker, ...
FROM qaware-oss-docker-registry.bintray.io/base/alpine-k8s-openjdk8:8u121
MAINTAINER M.-Leander Reimer <mario-leander.reimer@qaware.de>
RUN mkdir -p /app
ADD build/distributions/everything-as-code-1.2.3.tar /app
WORKDIR /app/everything-as-code-1.2.3
RUN chmod 755 bin/everything-as-code
EXPOSE 18080
CMD ./bin/everything-as-code
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

43. Cluster Orchestration mit K8s et.al.
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: everything-as-code
spec:
replicas: 2
template:
metadata:
labels:
tier: backend
spec:
containers:
- name: everything-as-code
image: "qaware-oss-docker-registry.bintray.io/lreimer/everything-as-code:1.2.3"
ports:
- containerPort: 18080
env:
- name: PORT
value: 18080
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

44. Einfache Provisionierung mit Ansible.
---
# 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
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

45. Vagrant und Ruby zum Setup lokaler VMs.
require 'yaml'
$setup = <<SCRIPT
sudo apt-add-repository ppa:ansible/ansible
sudo apt-get update
sudo apt-get install -y ansible sshpass
SCRIPT
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: $setup
end
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

47. Ja, wir brauchen Dokumentation!
• Und nein. Der Quellcode ist nicht genug!
• Technische Dokumente mit Word sind ! " #
• Dokumentation sollte neben dem Quellcode
liegen: change code, change docs.
• Schnell und einfach zu schreiben.
• Unterstützung für Code, Bilder, Diagramme
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

48. // 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 forces
that software architects must consider in their decisions.
=== Requirements Overview
=== Quality Goals
=== Stakeholders
<<<<
include::02_architecture_constraints.adoc[]
// further includes for the remaining sections
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

49. Mit AsciidoctorJ und Gradle zum fertigen Dokument.
plugins { 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', 'pdf']
options doctype: 'article'
attributes 'source-highlighter': 'coderay'
}
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

50. Architectur-Dokumentation mit Structurizr
def workspace = new Workspace("Everything-as-code", "The system context of Everything-as-code.")
def model = workspace.model
// create a model and the software system we want to describe
def bookApp = model.addSoftwareSystem("Book Application", "The best source to get info on books.")
// create the various types of people (roles) that use the software system
def anonymousUser = model.addPerson("Anonymous User", "Anybody on the web.")
anonymousUser.uses(bookApp, "Searches for books and views details.")
def browser = bookApp.addContainer("Web Browser",
"Allows users to view information about books", "Edge, Chrome, Firefox")
anonymousUser.uses(browser, "Views information from and makes requests to")
def webApp = bookApp.addContainer("Web Application",
"Hosts the browser-based web application and services", "Payara Fish")
browser.uses(webApp, "uses [JSON/HTTPS]")
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

51. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

53. 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.
---
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

55. Use the right tool
for the job!

57. Alles mit Augenmaß!
Der richtige Technologie-Stack hängt vom Team,
dem Projekt-Kontext und unseren Kunden ab.
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

58. Fork me on GitHub.
https://github.com/lreimer/everything-as-code
// ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }

59. // ContinuousLifecycle 2017 // Everything-as-code -> { created with ❤ and ☕ by @LeanderReimer @qaware }