Payara Micro Gradle Plugin

Payara Micro has a Gradle plugin which can start and stop Payara Micro and create an Uber JAR bundle of the application and Payara Micro .

The plugin requires JDK 8 or higher and the latest plugin version is currently 1.1.0

Installation

To use it, simply add the following script to your build.gradle:

plugins {
  id "fish.payara.micro-gradle-plugin" version "1.1.0"
}

Configuration Example

payaraMicro {
    payaraVersion = '6.2024.12'
    deployWar = false
    useUberJar = true
    daemon = false
    commandLineOptions = [port: 2468]
    javaCommandLineOptions = [Dtest: 'test123', ea:true]
}

Plugin Tasks

microBundle

Aim: This task bundles the attached project’s artifact into an Uber JAR with the specified configurations. Usage: gradle microBundle

Table 1. Configuration tags
Element Default Notes

javaPath

java

Absolute path to the java executable

payaraVersion

6.2024.12

By default microBundle task fetches payara-micro with version 6.2024.12

microStart

Aim: This task starts Payara Micro with the specified configuration. Usage: gradle microStart

Table 2. Configuration tags
Element Default Notes

useUberJar

false

Use created uber-jar that resides in target folder. The name of the JAR artifact will be resolved automatically by evaluating its final name, artifact ID and version. This configuration element has the higher precedence compared to payaraMicroAbsolutePath and payaraVersion.

payaraMicroAbsolutePath

none

Absolute path to payara-micro executable.

payaraVersion

6.2024.12

By default microStart task fetches Payara Micro with version 6.2024.12.

daemon

false

Starts Payara Micro in separate JVM process and continues with the Gradle build.

immediateExit

false

If Payara Micro is executed in daemon mode, the executor thread will wait for the ready message before shutting down its process. By setting immediateExit to true you can skip this and instantly interrupt the executor thread.

javaPath

java

Absolute path to the java executable.

deployWar

false

If the attached project is of type WAR, it will automatically be deployed to Payara Micro if deployWar is set to true.

javaCommandLineOptions

none

Defines a list of command line options that will be passed to java executable. Command line options can either be defined as key-value pairs or just as list of values. key-value pairs will be formatted as key=value.

commandLineOptions

none

Defines a list of command line options that will be passed onto Payara Micro.

hotDeploy

false

Enables the hot reload mode.

microStop

Aim: This task stops Payara Micro with the specified configuration. By default this task tries to find out currently executing Payara Micro instance based on project GAV. If processId is defined, it will take precedence and the given processId will immediately kill the executing Payara Micro instance. Usage: gradle microStop

Table 3. Configuration tags
Element Default Notes

processId

none

Process id of the running Payara Micro instance.

useUberJar

false

Use created uber-jar that resides in build\libs folder. The name of the jar artifact will be resolved automatically by evaluating its final name.

microReload

Aim: This task reloads the Payara Micro application with the specified configuration. By default, this task performs the vanilla deployment of the application without restarting the Payara Micro instance. If hotDeploy is set to true then the Hot Reload functionality will be enabled. Usage: gradle microReload

This task is specifically designed for integration with the IDEs and Editors. Payara Micro instance allows IDEs to deploy the application in Hot Deploy mode by reusing the existing application instance and updating its classloader and internal components relative to the modified source. This can lead to significant savings of time when an application is redeployed and boost developer productivity even more.
Table 4. Configuration tags
Element Default Notes

hotDeploy

false

Enables the hot reload mode.

sourcesChanged

none

Defines a list(comma separated) of the absolute paths to the source file which need to be reloaded via the Hot Reload feature.

metadataChanged

false

If set to true, reloads deployment descriptors metadata in hot deploy mode

See Also