juneau-doc/docs/Topics/11.juneau-microservice-core/01.Overview.html

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{8.0.0-new, 8.1.2-deprecated} 
Microservice Overview

<p>
	The Microservice API consists of a base class for defining executable microservices.
</p>
<p>
	Features include:
</p>
<ul class='spaced-list'>
	<li>
		A builder-based API for defining and starting microservices.
	<li>
		An extensible API that allows you to hook into various lifecycle events.
	<li>
		Simple-to-use APIs for accessing manifest file entries, command-line arguments, and external configuration 
		file properties.
</ul>
<p>
	The Microservice API consists of the following packages and classes:
</p>
<ul class='javatree'>
	<li class='jp'>{@link oaj.microservice}
		<ul>
			<li class='jc'>{@link oaj.microservice.Microservice} - The base microservice class.
			<li class='jc'>{@link oaj.microservice.MicroserviceBuilder} - Builder for the microservice class.
			<li class='jic'>{@link oaj.microservice.MicroserviceListener} - Interface for hooking into lifecyle events of the microservice.
			<ul>
				<li class='jc'>{@link oaj.microservice.BasicMicroserviceListener} - Adapter for MicroserviceListener class.
			</ul>
		</ul>
	<li class='jp'>{@link oaj.microservice.console}
		<ul>
			<li class='jac'>{@link oaj.microservice.console.ConsoleCommand} - Abstract class for defining console commands.
		</ul>
</ul>
<p>
	By itself the Microservice API doesn't provided much functionality, but it does provide the basis for the {@doc juneau-microservice-jetty Jetty Microservice} described later.
</p> 
<p>
	The most-basic creation of a microservice from an entry-point method is shown below:
</p>	
<p class='bpcode w800'>
	<jk>public class</jk> App {
		<jk>public static void</jk> main(String[] args) {
			Microservice
				.<jsm>create</jsm>()   <jc>// Create builder.</jc>
				.args(args) <jc>// Pass in args.</jc>
				.build()    <jc>// Create microservice.</jc>
				.start()    <jc>// Start microservice.</jc>
			;
		}
	}
</p>