How to use startParameters in BuildGradle task? - gradle

Question

I would like to pass deployDir (with value /my_archive) to uploadArchives task in my_project:
task build (type: GradleBuild) {
buildFile = './my_project/build.gradle'
tasks = ['uploadArchives']
/* startParameter = [deployDir:"/my_archive"] ??? */
}
I do not know how to declare the start parameters. I have tried different ways, e.g.,
startParameter = [deployDir:"/my_archive"]
Without success.
How to declare startParameter in the GradleBuild task?

Answer 1

I assume you mean to pass the deployDir as a project property. In this case, you'll find there is a setProjectProperties(Map) method you can use:
task build (type: GradleBuild) {
buildFile = './my_project/build.gradle'
tasks = ['uploadArchives']
startParameter.projectProperties = [deployDir: "/my_archive"]
}
This will enable you to access deployDir as a variable from the called build script:
uploadArchives {
repositories {
mavenDeployer {
repository(url: deployDir)
// --- or, if deployDir can be empty ---
repository(url: project.properties.get('deployDir', 'file:///default/path'))
}
}
}

Answer 2

we can set the project properties and system properties via the api
setProjectProperties(Map<String,String> projectProperties)
setSystemPropertiesArgs(Map<String,String> systemPropertiesArgs)
here is the sample from my local for startParameter:
task startBuild(type: GradleBuild) {
StartParameter startParameter = project.gradle.startParameter;
Iterable<String> tasks = new ArrayList<String>();
Iterable<String> excludedTasks = new ArrayList<String>();
startParameter.getProjectProperties().each { entry ->
println entry.key + " = " + entry.value;
if(entry.key.startsWith('t_')){
tasks << (entry.key - 't_');
}
if(entry.key.startsWith('build_') && "true" == entry.value){
tasks << (':' + (entry.key - 'build_') +':build');
}
if(entry.key.startsWith('x_') && "true" == entry.value){
excludedTasks << (entry.key - 'x_');
}
}
startParameter.setTaskNames(tasks);
startParameter.setExcludedTaskNames(excludedTasks);
println startParameter.toString();
}
we can reference the api from this link StartParameter
the startparameter is really powerful in gradle when you need to customize your gradle build logic.