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DanielContrerasAladroDanielContrerasAladro
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PAYARA-1939: SSE sample, serving from JAXRS-REST API to HTML5 JS listener
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‎pom.xml‎

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<modules>
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<module>test-utils</module>
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<module>servlet</module>
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<module>sse</module>
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<module>security</module>
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<module>jsf</module>
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<module>cdi</module>

‎sse/README.md‎

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# Java EE 8 Samples: Server Sent Events 1.0#
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The [JSR 370](https://www.jcp.org/en/jsr/detail?id=370) specifies the JavaTM API for RESTful Web Services - Server-Sent Events (SSE).
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## Samples ##
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- producer
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- consumer

‎sse/log.log‎

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‎sse/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee8</groupId>
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<artifactId>samples-parent</artifactId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<artifactId>sse</artifactId>
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<packaging>pom</packaging>
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<name>Java EE 8 Samples: Server Sent Events</name>
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<modules>
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<module>producer</module>
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</modules>
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<dependencies>
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<dependency>
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<groupId>org.javaee8</groupId>
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<artifactId>test-utils</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>org.glassfish.jersey.media</groupId>
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<artifactId>jersey-media-sse</artifactId>
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<version>2.26</version>
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</dependency>
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<dependency>
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<groupId>javax.ws.rs</groupId>
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<artifactId>javax.ws.rs-api</artifactId>
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<version>2.1</version>
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</dependency>
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</dependencies>
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</project>

‎sse/producer/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.javaee8</groupId>
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<artifactId>sse</artifactId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<artifactId>sse-producer</artifactId>
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<packaging>war</packaging>
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<name>Java EE 8 Samples: Server Sent Events [Producer]</name>
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<dependencies>
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<dependency>
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<groupId>javax.ejb</groupId>
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<artifactId>javax.ejb-api</artifactId>
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<version>3.2</version>
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<scope>test</scope>
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<type>jar</type>
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</dependency>
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</dependencies>
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</project>

‎sse/producer/src/main/java/org/javaee8/sse/producer/SseResource.java‎

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package org.javaee8.sse.producer;
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import javax.annotation.PostConstruct;
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import javax.inject.Singleton;
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import javax.ws.rs.GET;
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import javax.ws.rs.Path;
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import javax.ws.rs.Produces;
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import javax.ws.rs.core.Context;
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import javax.ws.rs.core.MediaType;
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import javax.ws.rs.sse.Sse;
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import javax.ws.rs.sse.SseBroadcaster;
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import javax.ws.rs.sse.SseEventSink;
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/**
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* @author Daniel Contreras
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*/
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@Path("/")
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@Singleton
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public class SseResource {
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@Context
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private Sse sse;
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private volatile SseBroadcaster sseBroadcaster;
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@PostConstruct
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public void init() {
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System.out.println("1");
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this.sseBroadcaster = sse.newBroadcaster();
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System.out.println("2");
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}
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@GET
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@Path("register")
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@Produces(MediaType.SERVER_SENT_EVENTS)
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public void register(@Context SseEventSink eventSink) {
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System.out.println("3");
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eventSink.send(sse.newEvent("welcome!"));
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System.out.println("4");
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sseBroadcaster.register(eventSink);
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System.out.println("5");
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eventSink.send(sse.newEvent("event1"));
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eventSink.send(sse.newEvent("event2"));
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eventSink.send(sse.newEvent("event3"));
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for (int i = 0; i < 20; i++) {
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sseBroadcaster.broadcast(sse.newEvent("Repeated" + i));
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try {
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Thread.sleep(1000);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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}

‎sse/producer/src/main/java/org/javaee8/sse/rest/RestApplication.java‎

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/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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package org.javaee8.sse.rest;
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import javax.ws.rs.ApplicationPath;
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import javax.ws.rs.core.Application;
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/**
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*
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* @author daniel
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*/
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@ApplicationPath(value = "rest")
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public class RestApplication extends Application{
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}

‎sse/producer/src/main/resources/WEB-INF/glassfish-web.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glassfish-web-app PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Servlet 3.0//EN" "http://glassfish.org/dtds/glassfish-web-app_3_0-1.dtd">
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<glassfish-web-app error-url="">
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<context-root>/</context-root>
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</glassfish-web-app>

‎sse/producer/src/main/webapp/index.html‎

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<!DOCTYPE html>
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<!--
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To change this license header, choose License Headers in Project Properties.
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To change this template file, choose Tools | Templates
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and open the template in the editor.
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-->
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<html>
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<head>
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<title>SSE</title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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</head>
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<body>
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<span id="foo"></span>
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<br><br>
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<button onclick="start()">Start</button>
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<script>
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function start() {
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var eventSource = new EventSource("rest/register");
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console.log(eventSource);
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eventSource.onmessage = function (event) {
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console.log(event)
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var el = document.getElementById("foo");
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el.innerHTML += event.data + "<br/>";
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el.scrollTop += 50;
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};
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eventSource.addEventListener('broadcast', function (event) {
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console.log(event)
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var el = document.getElementById("foo");
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el.innerHTML += event.data + "lt;br/&>";
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el.scrollTop += 50;
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}, false);
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}
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</script>
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</body>
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</html>

‎sse/producer/src/test/java/org/javaee8/sse/producer/SseResourceTest.java‎

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package org.javaee8.sse.producer;
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import static org.jboss.shrinkwrap.api.ShrinkWrap.create;
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import java.io.IOException;
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import java.net.URL;
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import org.jboss.arquillian.container.test.api.Deployment;
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import org.jboss.arquillian.container.test.api.RunAsClient;
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import org.jboss.arquillian.junit.Arquillian;
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import org.jboss.arquillian.test.api.ArquillianResource;
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import org.jboss.shrinkwrap.api.spec.WebArchive;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import javax.ws.rs.client.Client;
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import javax.ws.rs.client.ClientBuilder;
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import javax.ws.rs.client.WebTarget;
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import javax.ws.rs.core.Context;
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import javax.ws.rs.sse.SseEventSource;
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/**
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* @author Daniel Contreras
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*/
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//@RunWith(Arquillian.class)
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public class SseResourceTest {
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/*
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@ArquillianResource
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private URL base;
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private Client sseClient;
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WebTarget target;
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@Deployment
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public static WebArchive createDeployment() {
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return create(WebArchive.class)
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.addClass(SseResource.class);
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}
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@Before
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public void setup() {
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System.out.println("01");
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this.sseClient = ClientBuilder.newClient();
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System.out.println("02");
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}
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@After
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public void teardown() {
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}
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@Test
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@RunAsClient
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public void testClient() throws IOException {
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System.out.println("Client");
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System.out.println(base + "producer/register");
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System.out.println(this.sseClient.getConfiguration().toString());
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}
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@Test
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public void testServer() throws IOException {
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System.out.println("Server");
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System.out.println(base + "producer/register");
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//this.sseClient.target(base + "producer/register");
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System.out.println(this.sseClient.getConfiguration().getProperties().toString());
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System.out.println(this.sseClient.getConfiguration().getRuntimeType().toString());
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System.out.println(this.sseClient.getConfiguration().getInstances().toArray().toString());
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//this.sseClient.getHostnameVerifier();
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System.out.println(base + "producer/register");
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WebTarget target = sseClient.target(base + "producer/register");
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System.out.println("1");
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try (SseEventSource source = SseEventSource.target(target).build()) {
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System.out.println("2");
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source.register(System.out::println);
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System.out.println("3");
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source.open();
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System.out.println("5");
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Thread.sleep(500); // Consume events for just 500 ms
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} catch (Exception e) {
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System.out.println("error!!!");
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System.out.println(e.getMessage());
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}
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}
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*/
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}

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