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- Add a simple UI to the WebServer SSE example.
- Update README.md (align with multipart) - Update endpoints and test to add count and delay parameters - Add logging provider and logging.properties
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examples/webserver/sse/src/main/java/io/helidon/examples/webserver/sse/Main.java
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| /* | ||
| * Copyright (c) 2024 Oracle and/or its affiliates. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.helidon.examples.webserver.sse; | ||
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| import io.helidon.logging.common.LogConfig; | ||
| import io.helidon.webserver.WebServer; | ||
| import io.helidon.webserver.http.HttpRules; | ||
| import io.helidon.webserver.staticcontent.StaticContentService; | ||
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|
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| /** | ||
| * This application provides a simple service with a UI to exercise Server Sent Events (SSE). | ||
| */ | ||
| class Main { | ||
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| private Main() { | ||
| } | ||
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| /** | ||
| * Executes the example. | ||
| * | ||
| * @param args command line arguments, ignored | ||
| */ | ||
| public static void main(String[] args) { | ||
| // load logging configuration | ||
| LogConfig.configureRuntime(); | ||
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| WebServer server = WebServer.builder() | ||
| .routing(Main::routing) | ||
| .port(8080) | ||
| .build() | ||
| .start(); | ||
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| System.out.println("WEB server is up! http://localhost:" + server.port()); | ||
| } | ||
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| /** | ||
| * Updates the routing rules. | ||
| * | ||
| * @param rules routing rules | ||
| */ | ||
| static void routing(HttpRules rules) { | ||
| rules.register("/", StaticContentService.builder("WEB") | ||
| .welcomeFileName("index.html") | ||
| .build()) | ||
| .register("/api", new SseService()); | ||
| } | ||
| } |
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examples/webserver/sse/src/main/java/io/helidon/examples/webserver/sse/SseMain.java
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examples/webserver/sse/src/main/resources/WEB/index.html
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| <!DOCTYPE html> | ||
| <!-- | ||
| Copyright (c) 2024 Oracle and/or its affiliates. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| --> | ||
| <html lang="en"> | ||
| <meta charset="utf-8"/> | ||
| <head> | ||
| <title>Helidon Examples WebServer SSE</title> | ||
| <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script> | ||
| <style> | ||
| .container { | ||
| width: 400px; | ||
| } | ||
| .controls { | ||
| display: flex; | ||
| flex-direction: row; | ||
| justify-content: space-between; | ||
| } | ||
| .controls input { | ||
| flex-grow: 1; | ||
| } | ||
| .controls input:not(:first-child) { | ||
| margin-left: 10px; | ||
| } | ||
| .events { | ||
| overflow-y: auto; | ||
| height: 400px; | ||
| margin: 10px 0 10px 0; | ||
| background-color: #f3f4f9; | ||
| color: #2F4F4F; | ||
| } | ||
| .events span { | ||
| display: block; | ||
| } | ||
| </style> | ||
| </head> | ||
| <body> | ||
| <h1>Text events</h1> | ||
| <div id="text_events" class="container"> | ||
| <div class="controls"> | ||
| <input type="button" value="start" /> | ||
| <input type="button" value="stop" disabled/> | ||
| </div> | ||
| <div class="events"></div> | ||
| </div> | ||
| <h1>JSON events</h1> | ||
| <div id="json_events" class="container"> | ||
| <div class="controls"> | ||
| <input type="button" value="start" /> | ||
| <input type="button" value="stop" disabled/> | ||
| </div> | ||
| <div class="events"></div> | ||
| </div> | ||
| <script type="text/javascript"> | ||
| $(document).ready(() => { | ||
| class Events { | ||
| constructor(rootEltId, uri, eventType) { | ||
| this.uri = uri; | ||
| this.eventSource = null; | ||
| this.rootElt = $(rootEltId); | ||
| this.eventsElt = this.rootElt.find('.events'); | ||
| this.startButton = this.rootElt.find('input[value="start"]'); | ||
| this.stopButton = this.rootElt.find('input[value="stop"]'); | ||
| this.startButton.click(() => { | ||
| this.eventsElt.empty(); | ||
| this.eventSource = new EventSource(this.uri); | ||
| this.eventSource.addEventListener('error', () => { | ||
| // server side stops after count | ||
| // prevent restart | ||
| this.eventSource.close(); | ||
| this.toggle(false); | ||
| }); | ||
| this.eventSource.addEventListener(eventType, event => { | ||
| this.eventsElt.append(`<span>${event.data}</span>`); | ||
| }); | ||
| this.toggle(true); | ||
| }); | ||
| this.stopButton.click(() => { | ||
| this.eventSource.close(); | ||
| this.toggle(false); | ||
| }); | ||
| } | ||
| toggle(active) { | ||
| this.startButton[0].disabled = active; | ||
| this.stopButton[0].disabled = !active; | ||
| } | ||
| } | ||
| new Events('#text_events', '/api/sse_text?count=30&delay=1', 'my-event'); | ||
| new Events('#json_events', '/api/sse_json?count=10&delay=1', 'message'); | ||
| }); | ||
| </script> | ||
| </body> | ||
| </html> |
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examples/webserver/sse/src/main/resources/logging.properties
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| # | ||
| # Copyright (c) 2018, 2024 Oracle and/or its affiliates. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| # | ||
|
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| handlers=java.util.logging.ConsoleHandler | ||
| java.util.logging.SimpleFormatter.format=%1$tY.%1$tm.%1$td %1$tH:%1$tM:%1$tS.%1$tL %5$s%6$s%n | ||
| # Global logging level. Can be overridden by specific loggers | ||
| .level=INFO | ||
| io.helidon.webserver.level=INFO |
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