Gradle child modules evaluation dependency - spring

Question

I have a bunch of projects whose configuration should be based on a template (only name changes, different dependencies). To do that I defined a parent project called "server" that holds that common configuration part in subprojects section.
group 'com.kbhit.orangebox.server'
version '1.0-SNAPSHOT'
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath "org.springframework.boot:spring-boot-gradle-plugin:1.3.5.RELEASE"
classpath 'com.bmuschko:gradle-docker-plugin:3.0.1'
}
}
import com.bmuschko.gradle.docker.tasks.container.DockerCreateContainer
import com.bmuschko.gradle.docker.tasks.container.DockerStartContainer
import com.bmuschko.gradle.docker.tasks.container.DockerStopContainer
import com.bmuschko.gradle.docker.tasks.image.DockerBuildImage
import com.bmuschko.gradle.docker.tasks.image.Dockerfile
ext.defineArtifact = { Map artifact ->
ext {
projectName = "$artifact.name"
projectVersion = '1.0.0'
artifactName = "$artifact.name-artifact.version.jar"
dockerBuildDir = "$buildDir/docker/"
}
springBoot {
executable = true
}
docker {
url = 'http://192.168.99.101:2376'
certPath = file(System.getProperty('docker.cert.path') ?: "${System.getProperty('user.home')}/.docker/machine/machines/default")
}
jar {
baseName = projectName
version = projectVersion
}
task createDockerfile(type: Dockerfile) {
destFile = file("$buildDir/docker/Dockerfile")
from 'java:8u91'
exposePort 8080
copyFile "$buildDir/docker/app.jar", '/app/app.jar'
workingDir '/app'
defaultCommand 'java', '-jar', 'app.jar'
}
task buildImage(type: DockerBuildImage, group: 'docker') {
dependsOn 'bootRepackage', 'createDockerfile'
inputDir = file("$buildDir/docker")
doFirst {
copy {
from "$buildDir/libs"
into dockerBuildDir
include artifactName
rename artifactName, 'app.jar'
}
}
}
task createContainer(type: DockerCreateContainer, group: 'docker') {
dependsOn buildImage
targetImageId { buildImage.getImageId() }
containerName projectName
}
task startContainer(type: DockerStartContainer, group: 'docker') {
dependsOn createContainer
targetContainerId { createContainer.getContainerId() }
}
task stopContainer(type: DockerStopContainer, group: 'docker') {
targetContainerId { createContainer.getContainerId() }
}
}
subprojects {
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'spring-boot'
apply plugin: 'com.bmuschko.docker-remote-api'
sourceCompatibility = 1.8
targetCompatibility = 1.8
repositories {
maven {
url('http://localhost:10001/content/groups/public/')
}
}
dependencyManagement {
imports {
mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Brixton.RELEASE'
}
}
dependencies {
compile("org.springframework.boot:spring-boot-starter-web") {
exclude module: "spring-boot-starter-tomcat"
}
compile group: 'io.springfox', name: 'springfox-swagger2', version: '2.5.0'
compile group: 'io.springfox', name: 'springfox-swagger-ui', version: '2.5.0'
compile("org.springframework.boot:spring-boot-starter-jetty")
compile("org.springframework.boot:spring-boot-starter-actuator")
testCompile("junit:junit")
testCompile("org.springframework.boot:spring-boot-starter-test")
}
task wrapper(type: Wrapper) {
gradleVersion = '2.3'
}
}
afterEvaluate {
task startServer() {
dependsOn subprojects.startContainer
}
}
Here's the configuration of one of the modules:
defineArtifact(name: 'orb-api-gateway', version: '1.0.0')
dependencies {
compile 'org.springframework.cloud:spring-cloud-starter-zuul'
compile 'org.springframework.cloud:spring-cloud-starter-eureka'
compile 'org.springframework.cloud:spring-cloud-starter-config'
testCompile group: 'com.jayway.restassured', name: 'rest-assured', version: '2.9.0'
}
The problem is that:
Child projects need to "inject" their properties "up" before those are requested in task definitions, eg. buildImage task - I'd use $dockerBuildDir variable which should be defined in defineArtifact method based on the arguments provided by the child module.
Parent module must have access to tasks created for child modules. See startServer task at the bottom.
Of course this won't work as at the time no task are created. If I were to fix this I would have to make server project evaluate after it's children but then I would not be able to define defineArtifact method before children request it. How to solve this problem?