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jersey-sse-ozark.html
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<!DOCTYPE html>
<html>
<head>
<title>Java EE 8を先取る</title>
<meta charset="utf-8">
<style>
@import url(https://fonts.googleapis.com/css?family=Ubuntu+Mono:400,700,400italic);
@font-face {
font-family: 'mplus';
src: url('assets/mplus-1c-regular.ttf');
}
h1, h2, h3, h4, h5, h6 {
font-family: 'mplus';
}
p, li {
font-family: 'mplus';
font-size: 1.2em;
}
strong {
text-decoration: underline;
}
li p, li li {
font-size: 1em;
}
code.remark-inline-code {
font-family: 'Ubuntu Mono';
}
code.remark-code {
font-family: 'Ubuntu Mono';
font-size: 1.2em;
}
table {
border-right: thin solid silver;
border-bottom: thin solid silver;
}
th, td {
border-left: thin solid silver;
border-top: thin solid silver;
}
</style>
</head>
<body>
<textarea id="source">
class: center, middle
# Java EE 8を先取る
---
class: center, middle
## Java EE 8新機能
---
## Server-Sent Events (SSE)
* サーバー→クライアントの通知
* HTTPプロトコルで実現
---
## MVC 1.0
* アクションベースのMVC
* JAX-RS拡張として提供
---
## その他
* [JSON Binding](https://www.jcp.org/en/jsr/detail?id=367)
* HTTP/2サポート
* CDIの強化
* [Java EE Management API 2.0](https://www.jcp.org/en/jsr/detail?id=373)
* [Java EE Security API](https://www.jcp.org/en/jsr/detail?id=375)
---
### Java EE 8のリリーススケジュール
[JSR 366](https://www.jcp.org/en/jsr/detail?id=366)より引用
* Q4 2015 Early Draft
* Q1 2016 Public Review
* Q3 2016 Proposed Final Draft
* H1 2017 Final Release
---
class: center, middle
## そんなに待てない！！！
---
class: center, middle
### そこで……
---
class: center, middle
## Jersey SSE Support
JerseyによるServer-Sent Eventsのサポート
---
class: center, middle
## Ozark
MVC 1.0の参照実装
---
class: center, middle
## ですよ！！！
---
class: center, middle
### もうちょい詳しく
---
## Jersey SSE Support
* JerseyはJAX-RSの参照実装
* Jersey SSE SupportはJerseyでSSEするための拡張
* dependenciesに一行足すだけで使える(Gradle)
---
## 例：Jersey SSE
```java
@RequestScoped
@Path("sse")
public class SimpleSSESample {
@Resource
private ManagedExecutorService executor;
@GET
@Produces(SseFeature.SERVER_SENT_EVENTS)
public EventOutput sendEvents() {
EventOutput out = new EventOutput();
executor.submit(new Task(out));
return out;
}
}
```
---
## 例：Jersey SSE
```java
class Task implements Callable<Void> {
private final EventOutput out;
public Task(EventOutput out) { this.out = out; }
public Void call() throws Exception {
try {
for (int i = 0; i < 10; i++) {
TimeUnit.SECONDS.sleep(1);
OutboundEvent event =
new OutboundEvent.Builder()
.name("message")
.data("Hello " + i).build();
out.write(event);
}
return null;
} finally { out.close(); }
}
}
```
---
## 例：Jersey SSE
クライアント側のコード(JavaScript)
```javascript
var es = new EventSource('/sample/app/sse');
es.addEventListener('message', function(event) {
console.log(event.data);
});
```
---
## 例：Jersey SSE
実行結果
```
Hello 0
Hello 1
Hello 2
Hello 3
Hello 4
Hello 5
Hello 6
Hello 7
Hello 8
Hello 9
```
※1秒毎に表示される
---
## 例：Jersey SSE
build.gradleの記述例
```groovy
dependencies {
compile 'org.glassfish.jersey.media:jersey-media-sse:2.22'
}
```
---
## Ozark
* JSR 371 MVC 1.0の参照実装
* Jerseyをベースに作られている
* JSP、Thymeleaf、mustacheなどのテンプレートに対応
* dependenciesに一行足すだけで使える(Gradle)
---
## 例：Ozark
```java
@RequestScoped
@Path("hello")
public class HelloController {
@Inject
private Models models;
@Controller
@GET
public String sayHello(@QueryParam("name") String name) {
models.put("name", name);
return "hello.jsp";
}
}
```
---
## 例：Ozark
```jsp
<%@ page contentType="text/html; charset=UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<title>Hello</title>
</head>
<body>
<p>Hello, ${name}!</p>
</body>
</html>
```
---
## 例：Ozark
build.gradleの記述例
```groovy
dependencies {
compile 'org.glassfish.ozark:ozark:1.0.0-m02'
}
```
---
## サンプル作ってみました
https://github.com/backpaper0/jersey-sse-ozark-sample
---
## まとめ
* Java EE 8の新機能の一部は今からでも試せる
* 素振りをしておくとスムーズに導入できる
* もしくは、導入しないという判断もしやすい
---
## この資料について
* Author: [@backpaper0](https://github.com/backpaper0)
* License: [The MIT License](https://opensource.org/licenses/MIT)
</textarea>
<script src="assets/remark.min.js">
</script>
<script>
var slideshow = remark.create();
</script>
</body>
</html>