Hans Dockter on Gradle

Transcript

1. Gradle A Better Way To Build Friday, January 14, 2011
2. 2 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. Friday, January 14, 2011
3. • 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 3 What is Gradle? Friday, January 14, 2011
4. What is Gradle? Gradle is declarative You specify the WHAT Gradle figures out the HOW Friday, January 14, 2011
5. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Extensible Build Language instead of a Build Framework Friday, January 14, 2011
6. • Deep Configuration API • Deep Execution API • Rich API • Extendable Domain Objects • Custom Tasks • Custom Plugins 6 Extending Gradle Friday, January 14, 2011
7. Custom Declarative Elements usePlugin ʻeditionsʼ productEditions { enterprise core, plugins, powerAddons public core, plugins, openApi } > gradle enterpriseEditionZip > gradle publicEditionTar Friday, January 14, 2011
8. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Gradle is declarative without being rigid Friday, January 14, 2011
9. The Build Language Source Sets Dependencies Configurations Archives Projects Artifacts Custom Tasks Plugins Friday, January 14, 2011
10. XML and the What It’s the design, stupid! Friday, January 14, 2011
11. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Please no messy build scripts Friday, January 14, 2011
12. • Separate Imperative from Declarative • Custom Tasks/Plugins • BuildSrc • Jar 12 Organizing Build Logic Friday, January 14, 2011
13. 13 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 Friday, January 14, 2011
14. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. It’s the performance, stupid! Friday, January 14, 2011
15. 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) Friday, January 14, 2011
16. • Incremental Build • Parallel Testing • Soon: Parallel Builds, Distributed testing/builds • Rich Model 16 Speed Improvements Friday, January 14, 2011
17. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Gradle is a Build Integration Tool Friday, January 14, 2011
18. • 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 18 Build Integration Features Friday, January 14, 2011
19. • 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 19 Build Migration Friday, January 14, 2011
20. 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 ... Friday, January 14, 2011
21. 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'} Friday, January 14, 2011
22. • 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. 22 Build Eco System Friday, January 14, 2011
23. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Process is very important. But it is all about YOUR process Friday, January 14, 2011
24. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Their is no one-size-fits-all project structure for the enterprise. Friday, January 14, 2011
25. 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?) Friday, January 14, 2011
26. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Be as rigid as YOU want Friday, January 14, 2011
27. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. FRAME- WORKITIS Friday, January 14, 2011
28. 28 Fighting with a Framework Friday, January 14, 2011
29. Friday, January 14, 2011
30. SpringOne 2GX 2009. All rights reserved. Do not distribute without permission. Extensible Build Language instead of a Build Framework Friday, January 14, 2011
31. Gradle Wrapper >./gradlew assemble Friday, January 14, 2011
32. • 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 32 Project Background Friday, January 14, 2011
33. 33 Commercial Support: www.gradle.biz Friday, January 14, 2011
34. Q&A Friday, January 14, 2011