Gradle Task dependencies Execution issue - gradle

Question

I am facing an issue related to gradle task dependencies. One of my gradle task is calling another task successfully but it is not executing dependencies on which my second task depends. Please go through the following code to understand the problem statement:
My code is:
task callGradleDeploy <<{
tasks.deployComp.execute()
}
task deployComp (dependsOn: ['setEnvParameter', 'installWeb', 'installService']) <<{
println "Deployment Done"
}
task setEnvParameter {
//parameter Setting for deployement
}
task installWeb {
//install Web Code
}
task installService {
//install Services Code
}
Now when I run task callGradleDeploy, it is calling deployComp task but it is not installing Web or Service content (Not doing anything with setEnvParameter, installWeb, installService ). and Just printing Deployment Done
Just to notify, when I am individually calling(running) deployComp task, it is installing Web and Service part without any issue.
Please help me to understand how to manage this dependsOn thing while calling a gradle task into another.
Second part:
*//******************* Edited part below, For clear understanding *****************//*
#Opal I have done configuration like below after your suggestion.
For the cases, where only deployService should work. It is still calling deployWeb and deployWebAndService both.
Code is here:
task deploy (dependsOn : ['deployWeb', 'deployService', 'deployWebAndService']) <<{
println "\n\tExecuting respective task"
}
task deployWeb (dependsOn : ['configureWebApp','stopWebApp','uninstallWebApp','installWebApp','startWebApp']) <<{
println "\n\tExecuting deploy for Web Content"
}
task deployService (dependsOn : ['configureService','stopService','uninstallService','installService','startService']) <<{
println "\n\tExecuting deploy for Service Content"
}
task deployWebAndService (dependsOn : ['configureWebApp','configureService','stopWebApp','uninstallWebApp','installWebApp','startWebApp','stopService','uninstallService','installService'/*,'startService'*/]) <<{
println "\n\tExecuting deploy for Web and Service Content"
}
deployWeb.onlyIf{
(WebContent.equals("Yes") && ServiceContent.equals("No")) //fetching "Yes"/"No" values from a separate function
}
deployService.onlyIf{
(WebContent.equals("No") && ServiceContent.equals("Yes"))
}
deployWebAndService.onlyIf{
(WebContent.equals("Yes") && ServiceContent.equals("Yes"))
}

Answer 1

TL;DR Your build.gradle should look as follows:
task callGradleDeploy(dependsOn: ['deployComp']) {
}
task deployComp (dependsOn: ['setEnvParameter', 'installWeb', 'installService']) <<{
println "Deployment Done"
}
task setEnvParameter{
//parameter Setting for deployement
}
task installWeb{
//install Web Code
}
task installService{
//install Services Code
}
First of all you should never call task's execute() method manually, since this highly discouraged and interferes gradle's internal logic (directed acyclic graph). To define dependencies between tasks the following methods should be used:
mustRunAfter
shouldRunAfter
dependsOn
In your particular case it's enough to substitute execute invocation with dependsOn and it works perfectly. Also please note the << to indicate action is deprecated and scheduled to be removed in version 5.0. Instead use doLast:
task callGradleDeploy {
doLast { println 'action' }
}
EDIT
See the solution below. The advantage is that you configure dependencies between tasks once. To check if it works correctly run gradle deploy -Pwc or gradle deploy -Psc
task explodeWarContent {
doLast {
println 'Code to explode war'
}
}
task configureWebApp(dependsOn: explodeWarContent) {
doLast {
println 'Code to configure web app'
}
}
task stopWebApp {
doLast {
println 'Code to stop web app'
}
}
task uninstallWebApp(dependsOn: stopWebApp) {
doLast {
println 'Code to uninstall web app'
}
}
task installWebApp(dependsOn: configureWebApp) {
mustRunAfter uninstallWebApp
doLast {
println 'Code to install web app'
}
}
task startWebApp(dependsOn: installWebApp) {
mustRunAfter stopWebApp
doLast {
println 'Code to start web app'
}
}
task deployWebApp(dependsOn: [uninstallWebApp, startWebApp]) {
onlyIf { project.hasProperty('wc')}
}
task configureService {
doLast {
println 'Code to configure service'
}
}
task stopService {
doLast {
println 'Code to stop service'
}
}
task uninstallService(dependsOn: stopService) {
doLast {
println 'Code to uninstall service'
}
}
task installService(dependsOn: configureService) {
mustRunAfter uninstallService
doLast {
println 'Code to install service'
}
}
task startService(dependsOn: installService) {
mustRunAfter stopService
doLast {
println 'Code to start service'
}
}
task deployService(dependsOn: [uninstallService, startService]) {
onlyIf { project.hasProperty('sc')}
}
task deploy {
dependsOn deployWebApp, deployService
}