I am new to gradle and I am facing a weird problem while I’m trying to add a plugin in gradle. I know that we have to specify an if and version in plugin body for a gradle build, but I tried to add a plugin with some id and version. My question is..how does a gradle build know which artifact id to choose if there are multiple artifacts under same group id? I know that this might be a lame question...but I’m pretty new to gradle and I’d like to know your input.
Are you trying to apply the spring-boot-plugin?
If so, does the project you're trying to apply the plugin to have a buildscript block like this:
buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
}
dependencies {
classpath "org.springframework.boot:spring-boot-gradle-plugin:2.0.4.RELEASE"
}
}
apply plugin: "org.springframework.boot"
or a plugin closure:
plugins {
id "org.springframework.boot" version "2.0.4.RELEASE"
}
With a buildscript block, Gradle knows where to find the plugin because I've specified a repository for it to go look for it. After resolving the dependency path it finds and downloads the plugin, then puts it on the classpath for use in build.gradle files. It then only needs to get applied, i.e. apply plugin: ....
With the plugins closure, things are a bit trickier. Plugins are published under a unique id, which is looked up and gradle resolves the specified version. I'm not too terribly knowledgeable about how this is done, but here, new plugin mechanism , describes some differences between buildscript {} apply plugin: ... and plugins {}.
Related
I have created a custom Kotlin compiler plugin for Gradle. It was inspired by kotlin-allopen (2) and sample-kotlin-compiler-plugin, and is supposed to make all Kotlin classes non-final.
The problem is, I'm unable to use it in my projects, I only get the following:
Caused by: org.gradle.api.plugins.UnknownPluginException: Plugin with id 'no.synth.kotlin.plugins.kotlin-really-allopen' not found.
at org.gradle.api.internal.plugins.DefaultPluginManager.apply(DefaultPluginManager.java:131)
I have tried both the "new" plugin syntax:
plugins {
id "no.synth.kotlin.plugins.kotlin-really-allopen" version "0.1"
}
.. and the old one:
buildscript {
repositories {
mavenLocal()
}
dependencies {
classpath "no.synth.kotlin.plugins:kotlin-really-allopen:0.1"
}
}
apply plugin: "kotlin-really-allopen" // I've tried "no.synth.kotlin.plugins.kotlin-really-allopen" as well
So what am I doing wrong? Here's the plugin: https://github.com/henrik242/kotlin-really-allopen
EDIT: I have updated the repository with an example app and a README.md to easily reproduce the problem.
Your Gradle plugin doesn't seem to contain any entry under META-INF/gradle-plugins.
Gradle requires that every plugin ID is mapped to the implementation class, and this mapping is stored in META-INF/gradle-plugins resources.
To map the plugin ID kotlin-really-allopen, you would need a resource file
src/main/resources/META-INF/gradle-plugins/kotlin-really-allopen.properties.
See: Wiring for a custom plugin
You can also use the Gradle Plugin Development Plugin, which automatically generates these entries from the build script DSL.
Also, your repository doesn't seem to contain an actual Gradle plugin implementation, there's only the part that the compiler needs to load. For an example that contains the Gradle part too, take a look at kevinmost/debuglog.
Move apply plugin: "kotlin-really-allopen" in your build.gradle module app on top
I'm a beginner in gradle, using version 4.8.
Whatever I do , the plugins are never found. I get this error message:
Plugin [id: 'org.jetbrains.kotlin.jvm', version: '1.3.20'] was not found in any of the following sources:
Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
Plugin Repositories (could not resolve plugin artifact 'org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin:1.3.20')
Searched in the following repositories:
Gradle Central Plugin Repository
No matter how many repositories I add, it seems it is only looking in "Gradle Central Plugin Repository"
My gradle.build file:
buildscript {
repositories {
mavenCentral()
maven {
url "https://plugins.gradle.org/m2/"
}
}
dependencies {
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.20"
classpath "org.jetbrains.kotlin.jvm:kotlin-gradle-plugin:1.3.20"
}
}
plugins {
id 'java'
id 'org.jetbrains.kotlin.jvm' version '1.3.20'
id 'kotlin2js' version '1.3.20'
}
Can you help me?
Try the following gradle.build configuration:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.20"
}
}
plugins {
id 'java'
}
apply plugin: 'kotlin2js'
repositories {
mavenCentral()
}
When you include the plugin by id, it seems Gradle wants to retrieve the plugin from the Gradle plugin portal, but the Kotlin plugin is not there, it's part of the buildscript dependency. Using it with the apply plugin works. You can also find a slightly different working example here.
I had similar problem because i forgot about proxy settings like systemProp.https.proxyHost and systemProp.http.proxyHost and etc. that was set in ~/.gradle/gradle.properties.
I fixed configuration and plugin was successfully dowlnloaded
Check gradle.properties and try to add correct proxy settings if you behind firewall or escape this settings if you not.
you need to add repository mavenCentral() to the buildscript dependencies.
for example: kotlin-gradle-plugin:1.3.20. also the documentation hints for that.
Go to your project and then to the Gradle script. In Gradle, Go to Setting.Gradle and change the Fist Bitray Url to https://plugins.gradle.org/m2/.
In our company, many of the different projects use similar technology stack and will have many common features.
So, we want to maintain the common features, dependencies etc. in one common file and refer it in the other projects.
In maven, it is something like creating a separate maven project with the common dependency information and refer that in the other projects as .
I want to do something similar to the maven parent project in gradle, which can be used by all different projects.
I googled for that, but could not find a concise information on how to do that.
We are not allowed to use external thirdparty plugins.
It would be great if someone could explain it how to do that.
in gradle you can do that, but for it you need to have external plugin, otherwise it is not possible at least for now. I have achieved it in this way:
buildscript {
repositories { jcenter() }
dependencies {
classpath 'com.netflix.nebula:nebula-dependency-recommender:4.3.0'
}
}
allprojects {
apply plugin: 'nebula.dependency-recommender'
apply plugin: 'groovy'
apply plugin: 'java'
sourceCompatibility = 1.8
targetCompatibility = 1.8
repositories {
mavenCentral()
jcenter()
maven { url "http://repo1.maven.org/maven2/" }
maven { url "REPOSITORY_OF_YOUR_PARENT_POM.XML" }
}
dependencyRecommendations {
mavenBom module: 'YOUR_PARENT_POM_GROUP:YOUR_PARENT_POM_ID:YOUR_PARENT_POM_VERSION'
}
}
where:
REPOSITORY_OF_YOUR_PARENT_POM.XML - any system like nexus or something else accessible for maven
YOUR_PARENT_POM_GROUP - your parent pom project group (e.g. com.foo.bar.parent)
YOUR_PARENT_POM_ID - your parent pom id (e.g. projects-parent)
YOUR_PARENT_POM_VERSION - your parent pom project version (e.g. 1.0.1)
so, if the external dependency to netflix.nebula is fine , than you can go in this way
Gradle has many extension mechanisms for leveraging build logic located outside of the main script.
A simple thing that can be done is to use an external build script, which can be sourced from the local file system or through an URL, see the documentation on this topic.
If that solution gets too problematic, then you can move to packaging a real plugin that others can apply and potentially configure.
This will allow you to configure much more than dependencies for example.
I have a webapp compilation subproject which is written in a separate script plugin and is being added to the root project via "apply from: scriptSrc" syntax. Top of my script plugin looks like this:
buildscript {
repositories {
jcenter()
}
dependencies{
classpath 'com.moowork.gradle:gradle-grunt-plugin:0.10'
}
}
apply plugin: "com.moowork.grunt"
However its not recognizing the plugin and fails on the initialization phase saying
Plugin with id 'com.moowork.grunt' not found.
I am following this: https://plugins.gradle.org/plugin/com.moowork.grunt/0.10.
Anyone else having issues with grunt plugin inclusion in script plugin?
Not sure exactly what exactly is causing the issue. Make sure you have the buildscript setup the following way.
apply plugin: 'com.moowork.grunt'
buildscript{
dependencies{
classpath 'com.moowork.gradle:gradle-grunt-plugin:0.13'
classpath 'com.moowork.gradle:gradle-node-plugin:0.12'
}
// In this section you declare where to find the dependencies of your project
repositories {
jcenter()
mavenCentral()
}
}
If you go plan to use plugin:0.13, you need to include the node-plugin as well or else you may get a NoClassDefFound Exception. This may not be necessary if you continue to use version 0.10.
Also, if you are working on a gradle project in eclipse and building the project from commandline, make sure you refresh the project so build reflects in your workspace.
In a multi-project Gradle environment, I have the usual buildscript block in my parent build.gradle:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.1.7.RELEASE")
}
}
However, the dependencies which are supposed to be "blessed" (See 54.2 Declaring dependencies without versions) does not seem to be, since Gradle does not search for the correct version (because there is not version at all). I wonder if I am missing some additional configuration or it's just not possible at this moment to have "blessed" dependencies for a multi-project Gradle environment.
Applying spring-boot plugin to all projects (not just parent project) should help.
Try:
allprojects {
apply plugin: 'spring-boot'
}
EDIT: Andy and I posted the answers almost at the same time. But yes, either allprojects or subprojects should work fine, depending whether you parent project needs the plugin, or not.
You need to apply the Spring Boot plugin to every project that you want to use the Boot-provided dependency versions. As it's a multi-project build (and assuming you want to apply the plugin to every subproject), add the following to your build.gradle:
subprojects {
apply plugin: 'spring-boot'
}