Scala：接收服务器发送事件 [英] Scala: Receiving Server-Sent-Events

问题描述

设置：

我正在处理的项目有一个带有HTTP接口的pub / sub服务器。订阅通过接受服务器发送事件来工作。

A project I am working on has a pub/sub server with an HTTP interface. Subscription works by accepting server-sent-events.

curl -X GET server:port/topics/news

每当邮件发布到给定主题网址时都会被推送

which will be pushed whenever a message is published to the given topic URL

curl -X PUT server:port/topics/news -d "Politician Lies!"

问题：

我有一个需要订阅此pub / sub服务器的scala项目。表演！框架能够通过使用带有Enumeratee + Iteratee的PlayWS来处理这个问题。不幸的是，PlayWS库要求播放！应用程序在范围内，我不使用Play。是否有一个库（具有最小的依赖性）我可以使用它允许我接受服务器发送事件？我需要至少一个工作示例才能开始。

I have a scala project which needs to subscribe to this pub/sub server. The Play! framework is able to handle this by using PlayWS with Enumeratee + Iteratee. Unfortunately, the PlayWS library requires that a Play! Application is in scope and I am not using Play. Is there a library (with minimal dependancies) I can use which allows me to accept server-sent-events? I'll need at least one working example in order to get started.

我偏爱scala库但我愿意接受Java解决方案，如果我有to。

I have a preference for scala libraries but I'm willing to accept a Java solution if I have to.

推荐答案

你有几种可能性：

在Play 2.3中， WS库现在是一个单独的库，所以这应该有所帮助。 RC2已经可用

In Play 2.3, the WS library is now a separate library, so that should help. RC2 is already available

或者，您可以依赖于Play 2.x并使用 StaticApplication ，如下所示：

Alternatively, you could depend on Play 2.x and use a StaticApplication like so:

val application = new StaticApplication(new java.io.File("."))

这实际上是引导Play应用程序，从那里你可以使用 WS 图书馆照常

This will essentially bootstrap a Play application, and from there on you can use the WS library as usual

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