Javaone 2013 moscow gradle english
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Gradle Evgeny Borisov
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Transcript of Javaone 2013 moscow gradle english
Gradle
Evgeny Borisov
Good to be programmer…
You start crooked, everything is crooked
What are the tasks of build today?
• VCS • CI scripts & different xml configurations• Dependency management• Deployment (clustering)• Unit and sanity Tests• Documentation• …
Grandson will not come today, he sent mail that the build failed.
Which build tools do you know?
I use…
1. Gradle2. Maven3. Ant4. Ivy5. I build with my hands…
Declarative & Imperative
Declarative & Imperative
• ANT – Imperative
• Maven - Declarative Not really
Maven
<build>
</build>
We Love you, XML
<build>
</build>
We also have two problems…
• XML - yes, DSL- no
Who will be today’s Chuck Norris?
Why Gradle?
• Not adopted to specific type project• Powerful DSL, which can be extended easily• Groovy• Effective build– Tasks can run in parallel – Incremental build
One doesn’t simply talk. Lets build some project.
Where is my print???
test { testLogging.showStandardStreams = true}
Build task dependency graph
It’s exactly like in maven
Not like maven at all
• You can add dependency to existing task
• You can change task behavior via it’s properties
• You can extend tasks
Build task dependency graph
I need a war!
Lets write a Task
1. Class MyTask extends DefaultTask2. Write a method @TaskAction3. Add it to DSL4. That is all!
Additional plugins
• Groovy Plugin• The Scala Plugin• The War Plugin• The Ear Plugin• The Jetty Plugin• The Eclipse Plugin• The IDEA Plugin
• AspectJ plugin• ClassLoader plugin• Exec plugin• JavaFx Plugin• Tomcat Plugin• Android Plugin• The FindBugs Plugin
Your own Plugin
• Why should I write my own plugin? It’s not enough to write my own tasks?
• Extend DSL. – We want declarative build!
Do you want plugin???
• How to write plugin:https://bitbucket.org/davidmc24/gradle-bintray-plugin/src/6adc1aca5ed712b8802fe6b3830b2d860d9fda88/Bintray.gradle?at=default
• Adding plugin: buildscript: apply from: 'gradle/Bintray.gradle'
• Usage:repositories { bintray.jcenter() }
I can’t get out of here
I deep in this ant shit
You love ant?
Migrating from ant to gradle
Migrating from ant
I can’t migrate from maven
Yes you can!
maven2gradle plugin1. Type this in your build.gradle :
apply plugin:’maven2Gradle’
2. Put this script near you pom
3. Run: gradle build
What to read?
• http://www.gradle.org/docs/current/userguide/userguide.html
• http://www.gradle.org/docs/current/dsl/• http://www.gradle.org/docs/current/javadoc/
