GR8Conf 2011: Groovy Maven Builds
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This document provides an overview of using Groovy to improve Maven builds. It discusses how Groovy Maven (GMaven) allows adding custom build logic using Groovy. Polyglot Maven adds Groovy syntactic sugar to POM files. Groovy MOJOs provide a way to create reusable plugins with full access to the Maven runtime. Examples demonstrate dynamically generating plugin properties and passing information between plugins. The document concludes that Maven provides a platform for building applications, not just processes, when combined with Groovy.
![Maven Plugins
Duplicates found in:
-=-= [org.codehaus.plexus:plexus-classworlds:jar:2.2.2:compile,
classworlds:classworlds:jar:1.1:compile] =-=-
-=-= [commons-logging:commons-logging-api:jar:1.1:compile,
commons-logging:commons-logging:jar:1.1.1:compile] =-=-
-=-= [nekohtml:xercesMinimal:jar:1.9.6.2:compile,
xerces:xercesImpl:jar:2.8.1:compile] =-=-
-=-= [nekohtml:nekohtml:jar:1.9.6.2:compile,
net.sourceforge.nekohtml:nekohtml:jar:1.9.9:compile] =-=-
-=-= [commons-beanutils:commons-beanutils:jar:1.8.0:compile,
commons-collections:commons-collections:jar:3.2.1:compile] =-=-
Google Guice
Duplicates found in:
-=-= [com.google.inject:guice:jar:3.0-SNAPSHOT:compile,
com.google.inject:guice:jar:no_deps:3.0-SNAPSHOT:compile] =-=-
3535](https://image.slidesharecdn.com/groovymavenbuildsevgenygoldin2011-110526034152-phpapp01/85/GR8Conf-2011-Groovy-Maven-Builds-35-320.jpg)
GR8Conf 2011: Groovy Maven Builds
- 1. Groovy Maven Builds Evgeny Goldin Thomson Reuters @evgeny_goldin 11
- 2. Evgeny Goldin Software Developer – 11 years Dev : C++ => Perl => Java => Groovy / Scala CM : Ant => Maven => Gradle OS : Artifactory, TeamCity, Jenkins Write for GroovyMag and Methods & Tools Maven plugins, GCommons library 22
- 3. OpenCalais by Thomson Reuters http://www.opencalais.com/ http://viewer.opencalais.com/ 33
- 4. Maven state of affairs: Maven is rarely used to its fullest potential “maven-antrun-plugin” is terribly overused Plugins development is limited http://maven.apache.org/plugins http://mojo.codehaus.org/plugins.html 44
- 5. About this session: Maven can be made better! .. especially when you use Groovy We’ll see how: GMaven Polyglot Maven Groovy MOJOs + Demo 55
- 6. Groovy is a new Perl. 66
- 7. Maven and Gradle 77
- 8. Gradle - dynamic build applications. Maven - repeatable build processes. 88
- 9. Maven makes it awkward to .. “if” a model composition / plugin execution Specify dynamic value when configuring a plugin Put your own logic in POM Modify existing plugins behavior Pass in-memory information between plugins 99
- 10. Is the game over? Or can builds become applications? 1010
- 11. Use case – Build Metadata 1111
- 12. Ant: ~60 LOC (100 total) 3 files 1212 http://goo.gl/i0ldH
- 13. Groovy: ~10 LOC (30 total) 1313 http://goo.gl/GdS6y
- 14. Compiles Groovy code Executes Groovy code Generates Java Stubs (required for MOJOs) http://delicious.com/evgenyg/gmaven 1414
- 15. <goal>execute</goal> Runs Groovy code Runs Groovy script Runs Groovy class 1515
- 16. Get IDE support back! 1616 http://goo.gl/8DOe2
- 17. <goal>execute</goal> Runs Groovy code Runs Groovy script Runs Groovy class MavenProject MavenSession Maven’s “ServletContext” 1717
- 18. MavenProject – Static Info http://goo.gl/3Ve31 Coordinates Properties Artifacts Dependencies Basedir Remote repositories 1818
- 19. MavenSession – Runtime Info http://goo.gl/Kh8iL Current MavenProject Build start time User properties System properties Goals Local repository 1919
- 20. GMaven “if” a model composition / plugin execution Specify dynamic value when configuring a plugin Put your own logic in POM Modify existing plugins behavior Pass in-memory information between plugins 2020
- 21. Use case – Build Metadata 2121
- 22. http://evgeny-goldin.com/wiki/Maven-about-plugin <plugin> <groupId>com.goldin.plugins</groupId> <artifactId>maven-about-plugin</artifactId> <version>0.2.3</version> </plugin> 2222
- 23. something.jar/META-INF/about.txt 2323
- 24. 2424
- 25. 2525
- 26. Polyglot Maven https://docs.sonatype.org/display/PMAVEN/ https://github.com/sonatype/polyglot-maven git clone + mvn clean install translate pom.xml pom.groovy 2626
- 29. Polyglot Maven Groovy syntactic sugar to Maven POM Couldn’t find a way to Attach a code to a lifecycle Locate MavenProject and MavenSession 2929
- 30. Polyglot Maven “if” a model composition / plugin execution Specify dynamic value when configuring a plugin Put your own logic in POM “validate” phase 3030
- 31. Groovy MOJOs Reusable More exposure to Maven runtime environment http://delicious.com/evgenyg/mojo 3131
- 32. Use case – Duplicates 3232 http://goo.gl/ZFRvp
- 33. https://github.com/evgeny-goldin/gmaven-samples Duplicates Finder http://www.flickr.com/photos/rohdesign/3534506648/ (rohdesign.com) 3333
- 34. http://evgeny-goldin.com/wiki/Duplicates-finder-plugin <plugin> <groupId>com.goldin.plugins</groupId> <artifactId>duplicates-finder-plugin</artifactId> <version>0.2.3</version> </plugin> 3434
- 35. Maven Plugins Duplicates found in: -=-= [org.codehaus.plexus:plexus-classworlds:jar:2.2.2:compile, classworlds:classworlds:jar:1.1:compile] =-=- -=-= [commons-logging:commons-logging-api:jar:1.1:compile, commons-logging:commons-logging:jar:1.1.1:compile] =-=- -=-= [nekohtml:xercesMinimal:jar:1.9.6.2:compile, xerces:xercesImpl:jar:2.8.1:compile] =-=- -=-= [nekohtml:nekohtml:jar:1.9.6.2:compile, net.sourceforge.nekohtml:nekohtml:jar:1.9.9:compile] =-=- -=-= [commons-beanutils:commons-beanutils:jar:1.8.0:compile, commons-collections:commons-collections:jar:3.2.1:compile] =-=- Google Guice Duplicates found in: -=-= [com.google.inject:guice:jar:3.0-SNAPSHOT:compile, com.google.inject:guice:jar:no_deps:3.0-SNAPSHOT:compile] =-=- 3535
- 36. Groovy MOJOs A Groovy class + @AnnoMojo 3636
- 37. Groovy MOJOs A Groovy class + @AnnoMojo Dynamic properties 3737 http://goo.gl/UqBqn
- 38. Groovy MOJOs A Groovy class + @AnnoMojo Dynamic properties 3838 http://goo.gl/UqBqn
- 39. Groovy MOJOs A Groovy class + @AnnoMojo Dynamic properties 3939 http://goo.gl/xV73v
- 40. Groovy MOJOs A Groovy class + @AnnoMojo Dynamic properties New Maven properties 4040 http://goo.gl/tEgQa
- 41. Groovy MOJOs Other plugins can be extended or invoked Their initialization though, may not work well http://github.com/TimMoore/mojo-executor 4141 http://goo.gl/tEgQa
- 42. mojo-executor 4242 http://goo.gl/CT6AQ
- 43. Groovy MOJOs A Groovy class + @AnnoMojo Dynamic properties New Maven properties Other plugins can be extended or invoked That’s how you deal with Maven! 4343
- 44. Maven 3 vs. Maven 2 IE9 vs. IE6 Maven 3: Aether, mojo-executor, better Mojo support Maven 3 Mojos will not run on Maven 2 Maven 2 support will seriously hold you back 4444
- 45. Groovy MOJOs “if” a model composition / plugin execution Specify dynamic value when configuring a plugin Put your own logic in POM Modify existing plugins behavior Pass in-memory information between plugins 4545
- 46. So .. 4646
- 47. So .. GMaven - custom build behavior on any phase Polyglot Maven is a Groovy syntactic sugar Groovy Mojos is the way to make it your way 4747
- 48. So .. GMaven - custom build behavior on any phase Polyglot Maven is a Groovy syntactic sugar Groovy Mojos is the way to make it your way Creating build applications with Maven – doable! Maven is not a solution, but a platform 4848
- 49. So .. GMaven - custom build behavior on any phase Polyglot Maven is a Groovy syntactic sugar Groovy Mojos is the way to make it your way Creating build applications with Maven – doable! Maven is not a solution, but a platform We don’t have to be limited by existing plugins Perl, IDEA, Jenkins, jQuery, Grails, Gradle .. 4949
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