Run Java Package

This handler (com.rierino.handler.JarLoadedEventHandler) provides ability to load and execute dynamic Java packages during runtime.

Handler Parameters

Parameter	Definition	Example	Default
jar.state	Name of the state manager storing jar definitions	customJars	handler_jar
jar.domain	Category of jars within the jar state manager that can be used by this handler	basket_operations	-
jar.local.dir	Local directory to store dynamic jars	/tmp	java.io.tmpdir

Actions

Process / ProcessPackage

Passes requested event to dynamic event handler for processing. Event metadata parameters applicable for this action are as follows:

Table

Parameter	Definition	Example	Default
Dynamic Handler	Name of the handler to execute request	basket_operations	-
Dynamic Action	Name of the action to call on handler	PriceBasket	-

JSON Schema

All parameters applicable for the selected handler are also passed on by the JarLoadedEventHandler.

Packages

Handler packages provide ability to deploy or replace packaged components during runtime. These packages are typically deployed using an JarLoadedEventHandler and can be automatically redeployed in production with a package pulse or journal.

It is possible to extend the languages that are supported for dynamic handler packages with new event handlers. Rierino is shipped with dynamic package deployment for Java with the following properties:

• Name: Descriptive name of the handler package

• Status: Whether the handler package should still execute or not

• Description: Detailed explanation of the package contents

• Package Files: List and URLs of files to load for the package

• Package Handlers: List and fully qualified class names of handlers inside the package

While hot swapping packages during runtime has its risks, this feature allows for faster deployment of mission critical changes or simpler CI/CD processes during development.