Gradle Tips and Tricks - 2017

Run tasks on sub-projects only
./gradlew sub-project:build

Tasks
./gradlew classes
tasks

Gradle task options Skip Tasks
-x test -x testClasses -x javadoc -x javadocJar -x integrationTestClasses 
-x findbugsMain -x findbugsTest -x findbugsIntegrationTest -x pmdMain -x pmdTest -x pmdIntegrationTest 

--daemon
--dry-run 
--profile
--parallel
Troubleshooting
--debug

-s, --stacktrace

Run specific tests
gradle test --tests org.gradle.SomeTest.someMethod
gradle test --tests org.gradle.SomeTest
gradle test --tests org.gradle.internal*
//select all ui test methods from integration tests by naming convention
gradle test --tests *IntegTest*ui*
//selecting tests from different test tasks
gradle test --tests *UiTest integTest --tests *WebTest*ui

Install an artifact locally
apply plugin: 'maven-publish'
gradle publishToMavenLocal

Using artifacts from local maven
apply plugin: "maven"
allprojects {
  repositories {
      mavenLocal()
      mavenCentral()
  }
}

Run tasks in remote debug mode
--debug-jvm
export GRADLE_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"
- this is same as above, but more flexible.

gw - run gradle in sub folders
brew install gdub

Config files
Add extra steps into init script
~/.gradle/init.d

~/.gradle/init.gradle

allprojects {
  apply plugin: 'maven-publish'
  buildscript {
    repositories {
      mavenLocal()
      .... 
    }
  }

  repositories {
    mavenLocal()
    ....
  }

}

settings.gradle
- Figure out which projects are to take part in a build.
include ':repository', ':services', ':web-app'
gradle.properties vs settings.gradle

Change subproject name
include "foo"
rootProject.name = 'projectName'
project(":foo").name = "foofoo"

build.gradle
allprojects {}
subprojects {}

settings.gradle in root folder
build.gradle for each module

gradle.properties

Cache

~/.gradle/caches, it can also be configured to use local or remote maven.

Task
Use doLast instead of <<
task copyJarToBin(type: Copy) {
    from createJar // shortcut for createJar.outputs.files
    into "d:/tmp"
} 
task stopTomcat(type:Exec)


Related
Maven Tips and Tricks - 2016