Lightweight developer provisioning with gradle and seu as-code

Lightweight
Developer
Provisioning with
Gradle
and SEU-as-code
| JavaOne 2016 | task seuAsCode() << { println "created with ❤ and ☕ by @LeanderReimer" } 1

About me
Mario-Leander Reimer
Chief Technologist, QAware GmbH
mario-leander.reimer@qaware.de
twitter://@LeanderReimer
http://speakerdeck.com/lreimer
http://github.com/lreimer
http://github.com/seu-as-code
http://seu-as-code.io
http://www.qaware.de

SEU: a German acronym;
software development environment

Definition of Software Industrialization
• This has nothing to do with cheap labor!
• Automation of repetitive and laborious tasks
• Better software quality through standardized,
streamlined tooling
• Well integrated tool chain leads to a higher
productivity and happiness of your team
• Better cost efficiency and competitiveness

The ideal.

The reality?

What are the problems?
• Manual and error prone creation and update
procedure of individual SEUs
• Individual SEUs produce different results and
strange bugs
• Old versions of a SEU can't easily be restored
• The SEU for a new project is often a copy of a
previous project. ! Broken windows! !

The solution ...
• Use a build tool for the automated creation and
update of a SEU
• Software packages are expressed as dependencies
• Gradle tasks and Groovy are used instead of
shell scripting
• Everything is version controlled just like
ordinary source code

Demo.

The most minimalistic SEU
plugins {
id 'de.qaware.seu.as.code.base' version '2.4.0'
}
seuAsCode {
seuHome = 'J:'
projectName = 'JavaOne 2016'
}

Multi platform SEUs for mixed teams
plugins {
id 'de.qaware.seu.as.code.base' version '2.4.0'
}
import static de.qaware.seu.as.code.plugins.base.Platform.isMac
seuAsCode {
// use closure or Elvis operator (no syntax highlighting :(
seuHome = { if (isMac()) '/Volumes/JavaOne-2016' else 'J:' }
projectName = 'JavaOne 2016'
}

Software packages are dependencies
• Gradle has built-in support for dependencies
• Gradle supports different artifact repositories
(Maven, Ivy, Directory)
• Transitive dependencies between software
packages are supported
• Use dependency configurations to determine
installation directory

Software dependencies and configurations
repositories {
maven { url 'https://dl.bintray.com/seu-as-code/maven' }
jcenter()
}
dependencies {
seuac 'org.codehaus.groovy.modules.scriptom:scriptom:1.6.0'
seuac 'com.h2database:h2:1.4.188'
home 'de.qaware.seu.as.code:seuac-home:2.4.0'
software 'de.qaware.seu.as.code:seuac-environment:2.4.0:jdk8'
software 'org.gradle:gradle:2.14.1'
software "net.java:openjdk8:8u40:$osClassifier"
}

Secure passwords with Credentials plugin
plugins { id 'de.qaware.seu.as.code.credentials' version '2.4.0' }
repositories {
maven {
url 'https://your.company.com/nexus/repo'
credentials {
// access stored credentials via extra property
username project.credentials['Nexus'].username
password project.credentials['Nexus'].password
}
}
}

Platform plugin for OS specific builds
plugins { id 'de.qaware.seu.as.code.platform' version '1.0.0' }
platform {
win {
task helloSeuAsCode(group: 'Example') << {
println 'Hello SEU-as-code on Windows.'
}
}
mac {
task helloSeuAsCode(group: 'Example') << {
println 'Hello SEU-as-code on MacOS.'
}
}
}

Manage sources with Git or SVN plugin
plugins {
id 'de.qaware.seu.as.code.credentials' version '2.4.0'
id 'de.qaware.seu.as.code.git' version '2.3.0'
}
git {
plugins {
url 'https://github.com/seu-as-code/seu-as-code.plugins.git'
directory file("$seuHome/codebase/plugins/")
username project.credentials['Github'].username
password project.credentials['Github'].password
}
}

Manage sources with Git or SVN plugin
plugins {
id 'de.qaware.seu.as.code.credentials' version '2.4.0'
id 'de.qaware.seu.as.code.svn' version '2.1.1'
}
subversion {
usersGuide {
url 'https://github.com/seu-as-code/seu-as-code.users-guide.git'
directory file("$seuHome/docbase/users-guide/")
username project.credentials['Subversion'].username
password project.credentials['Subversion'].password
}
}

Implement scripts using plain Gradle
• Gradle build scripts are code! Be creative.
• Gradle provides useful predefined tasks: Copy,
Exec, Sync, Delete, ...
• Gradle tasks can easily reuse Ant tasks.
• Gradle tasks can be implemented in Groovy code.

Example 1: Init and delete Derby DB
ext.derbyHome = System.env['DERBY_HOME']
// import SQL file via the provided Derby command line tool
task initDemoDb(type: Exec, group: 'Database') {
workingDir "$derbyHome/bin"
commandLine 'cmd', '/B', '/C', 'ij.bat', "$rootDir/scripts/init.sql"
}
task deleteDemoDb(type: Delete, group: 'Database') {
delete "$derbyHome/demo"
}

Example 1: The Groovy SQL way
import groovy.sql.*
task initDemoDb(group: 'Database') << {
def derby = [
url: 'jdbc:derby://localhost:1527/demo;create=true',
driver: 'org.apache.derby.jdbc.ClientDriver',
user: 'admin',
password: 'secret'
]
Sql.withInstance(derby) {
execute file("$rootDir/scripts/database/init.sql").text
}
}

Example 2: Restore Solr index data
ext.cores = ['de_DE', 'en_GB', 'zh_CN']
task solrRestoreAll(group: 'Solr') { }
cores.each { coreName ->
def name = coreName.replaceAll("_", "").capitalize()
task "solrRestore${name}"(type: Sync, group: 'Solr') {
from zipTree("$rootDir/scripts/solr/${coreName}.zip")
into "$seuHome/software/solr-4.7.2/example/solr/${coreName}"
}
solrRestoreAll.dependsOn "solrRestore${name}"
}

Don't use shell
scripts. Use
Gradle instead!

Building software packages is easy
• Software packages are essentially plain JAR
files (software + customizations)
• 26 packages available via a Bintray repository
https://bintray.com/seu-as-code/maven
• 44 package build blue-prints are available at
Github, continuously growing.
• Software packages can be build with Gradle!

Let's build our
first package
using Gradle!

Download the original binary distribution
plugins {
id 'de.undercouch.download' version '1.2'
}
import de.undercouch.gradle.tasks.download.Download
task downloadArchive(type: Download) {
src 'https://services.gradle.org/distributions/gradle-3.0-all.zip'
dest "$buildDir"
}

Unpack archive using simple Gradle task
task extractArchive(type: Copy, dependsOn: downloadArchive) {
from {
zipTree("$buildDir/${project.name}-${version}-all.zip")
}
into "$buildDir/files"
}
// Best practice: directory name matches the package name
// optionally rename the extracted directory if required

Customize with additional files and hooks
// plain Groovy, place as a file under META-INF/hooks/
import org.codehaus.groovy.scriptom.*
Scriptom.inApartment
{
def wshShell = new ActiveXObject("WScript.Shell")
def shortcut = wshShell.CreateShortcut("$seuHomegradle.lnk")
shortcut.TargetPath = "${seuLayout.software}go-gradle.bat"
shortcut.WorkingDirectory = "${seuLayout.codebase}"
shortcut.Save()
}

Repackage all files as a normal JAR file
task buildPackage(type: Jar, dependsOn: extractArchive) {
baseName project.name
version version
extension 'jar'
// classifier 'x86'
destinationDir buildDir
from "$buildDir/files" // the extracted files
from "files" // some extra files
}

Publish JAR artifact to a repository server
publishing {
publications {
gradle(MavenPublication) {
artifact "${buildDir}/${project.name}-${version}.jar"
}
}
repositories {
maven {
// alternatively, use your private company repository server
url 'https://bintray.com/seu-as-code/maven'
credentials { ... }
}
}
}

What's next?

More features to come ...
• Continuously add more software packages
• Create plugin to build software packages
• Support for self-downloading packages
• Add support for other package managers
• Add Vault support for Credentials plugin
• Improve documentation and user’s guide

Star SEU-as-code on Github!
$ git clone https://github.com/seu-as-code/seu-as-code.archetype.git
$ git clone https://github.com/seu-as-code/seu-as-code.plugins.git
$ git clone https://github.com/seu-as-code/seu-as-code.packages.git
$ git clone https://github.com/seu-as-code/seu-as-code.examples.git
$ git clone https://github.com/seu-as-code/seu-as-code.documentation.git
$ git clone https://github.com/seu-as-code/seu-as-code.users-guide.git

Q & A

Lightweight developer provisioning with gradle and seu as-code

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