3. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
3
About Hans Dockter
• Founder, Gradle
• CEO, Gradle Inc.
• Before Gradle:
o Trainer, Mentor, Consultant
for Enterprise Java.
o Senior Developer for Krugle and
Volkswagen.
• Prehistoric ;): Committer to JBoss and founder of
JBoss-IDE.
Monday, October 25, 2010
4. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• A general purpose build system
• It comes with a Groovy DSL and a Java core.
• Provides build-in support for Java, Groovy, Scala,
Web, OSGi projects.
• Gradle provides exciting solutions for many of the
big pain points you often have with current builds.
– Maintainability
– Performance
– Usability
4
What is Gradle?
Monday, October 25, 2010
5. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
What is Gradle?
Gradle is declarative
You specify the WHAT
Gradle figures out the HOW
Monday, October 25, 2010
6. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Extensible
Build Language
instead of a
Build Framework
Monday, October 25, 2010
7. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Deep Configuration API
• Deep Execution API
• Rich API
• Extendable Domain Objects
• Custom Tasks
• Custom Plugins
7
Extending Gradle
Monday, October 25, 2010
8. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Custom Declarative Elements
usePlugin ʻeditionsʼ
productEditions {
enterprise core, plugins, powerAddons
public core, plugins, openApi
}
> gradle enterpriseEditionZip
> gradle publicEditionTar
Monday, October 25, 2010
9. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Gradle
is
declarative
without
being rigid
Monday, October 25, 2010
10. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
The Build Language
Source Sets
Dependencies
Configurations
Archives
Projects
Artifacts
Custom Tasks
Plugins
Monday, October 25, 2010
11. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
XML and the What
It does not matter much
whether a build system
uses XML or Groovy for
declaring things.
Monday, October 25, 2010
12. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Please
no
messy
build scripts
Monday, October 25, 2010
13. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Separate Imperative from Declarative
• Custom Tasks/Plugins
• BuildSrc
• Jar
13
Organizing Build Logic
Monday, October 25, 2010
14. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
14
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'commons-math:commons-math:1.1'
}
}
task math << {
org.apache.commons.math.fraction.Fraction lhs = new
org.apache.commons.math.fraction.Fraction(1, 3);
// do something
}
Build Script Libraries
Monday, October 25, 2010
15. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Performance
is one of the
biggest
pain points
of complex builds.
Monday, October 25, 2010
16. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Should clean be
required for a
reliable build?
(Hint: We have the
21st century)
Monday, October 25, 2010
17. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Incremental Build
• Parallel Testing
• Soon: Parallel Builds
• Not too distant future: Distributed testing/builds
• Rich Model
17
Speed Improvements
Monday, October 25, 2010
18. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Gradle is
a
Build
Integration
Tool
Monday, October 25, 2010
19. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Ant Tasks
• Deep import of Ant builds
• Retrieve/Deploy to Maven/Ivy repositories
• Autogeneration of pom.xml/ivy.xml
• Future: Deep import of Maven builds
19
Build Integration Features
Monday, October 25, 2010
20. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Mission Critical!
• Very expensive if the build system can’t adapt to the
existing project layout:
– Freeze
– Project automation not working for a while
– Different branches (unreliable, hard to compare, ...)
• Gradle’s suppleness enables baby steps.
– Gradle can adapt to any project layout.
– No separate branches
– Comparable --> You can write tests
20
Build Migration
Monday, October 25, 2010
21. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Dependency Management
• Transitive Dependencies
• Repository less dependencies are 1st class citizens.
• Excludes per configuration or dependency
• Very flexible repository handling
• Based on Apache Ivy
• Powerful API
• Much More ...
Monday, October 25, 2010
22. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Deep Integration with
Ant Builds
> gradle hello
Hello, from Gradle...Here comes Ant...
[ant:echo] Hello, from Ant
<project>
<target name="hello" depends="intro">
<echo>Hello, from Ant</echo>
</target>
</project>
ant.importBuild 'build.xml'
hello.doFirst { println 'Here comes Ant' }
task intro << { println 'Hello, from Gradle'}
Monday, October 25, 2010
23. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Supports Maven/Ant/Gradle with pom or ivy.
• Supports any repository layout
• Very advanced features
• Gradle Artifactory plugin
• Integrated in Gradle Hudson plugin.
• Gradle Inc. has business partnership with JFrog.
23
Build Eco System
Monday, October 25, 2010
24. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
25. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
26. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
27. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
28. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
29. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Process is very
important.
But it is all about
YOUR
process
Monday, October 25, 2010
30. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Their is
no one-size-fits-all
project structure
for the
enterprise.
Monday, October 25, 2010
31. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
The physical
structure of your
projects should be
determined by
your
requirements.
(What, if not?)
Monday, October 25, 2010
32. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Be as
rigid
as
YOU
want
Monday, October 25, 2010
33. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
FRAME-
WORKITIS
Monday, October 25, 2010
34. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
34
Fighting with a Framework
Monday, October 25, 2010
35. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Monday, October 25, 2010
36. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Extensible
Build Language
instead of a
Build Framework
Monday, October 25, 2010
37. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Gradle Wrapper
>./gradlew assemble
Monday, October 25, 2010
38. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
• Very active community (mailing-list, patches, issues)
• Apache v2 license.
• Excellent user’s guide (200+ pages) + many samples
• Frequent releases, multiple commits per day
• Quality is king:
– 2800 unit tests, Many hundreds of integration test
– Healthy codebase
– low defect rate
• Commiter -> Steve Appling, Hans Dockter, Tom
Eyckmans, Adam Murdoch, Russel Winder
38
Project Background
Monday, October 25, 2010
39. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
39
Commercial Support: www.gradle.biz
Monday, October 25, 2010
40. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission.
Q&A
Monday, October 25, 2010