如何使用Grizzly / Jersey获取客户端地址以进行日志记录？

问题描述

我正在使用Grizzly来提供Jersey应用程序，同时使用Logback来满足我的日志记录需求。请注意，此处不涉及 Servlet ，我使用一段代码手动启动所有内容：

I'm using Grizzly to serve a Jersey application, while using Logback for my logging needs. Please not that there are no Servlets involved here, I fire up everything "by hand" using a piece of code like this:

final URI uri = /* this is a configuration option */
this.server = new HttpServer();
final NetworkListener nl = new NetworkListener(
    "grizzly", uri.getHost(), uri.getPort());
server.addListener(nl);

final GuiceComponentProviderFactory gcpf =
    new GuiceComponentProviderFactory(rc, inj);
final HttpHandler processor = ContainerFactory.createContainer(
    HttpHandler.class, rc, gcpf);
this.server.getServerConfiguration().addHttpHandler(
    processor, uri.getPath());
server.start();

现在我想使用Logback的功能，使客户端的套接字地址在日志记录中可见。为此，我需要一些地方来连接一个HTTP处理的监听器，它会收到有关传入请求的通知（我可以将地址放入MDC）以及请求完成时（这样我就可以清理MDC）。我遵循的一种方法是使用Jersey连接 Container * Filter 实例，如下所示：

Now I would like to use Logback's MDC feature to make the socket address of the clients visible in the log records. For this purpose I would need some place to hook up a listener to the HTTP processing which gets notified about incoming requests (where I can put the address into the MDC) and when a request is done (so I can clean up the MDC). One approach I followed is to hook up a Container*Filter instance with Jersey, which looked like this:

class MdcFilter implements
        ContainerRequestFilter, ContainerResponseFilter {

    @Override
    public ContainerRequest filter(ContainerRequest request) {
        MDC.put("http-client", "foo" /* no way to get the address here */);
        return request;
    }

    @Override
    public ContainerResponse filter(
            ContainerRequest request,
            ContainerResponse response) {

        MDC.remove("http-client");
        return response;
    }

}

不幸的是，泽西岛 ContainerRequest 不提供有关连接客户端的信息（这真是一个惊喜）。

Unfortunately, a Jersey ContainerRequest does not provide information about the connected client (which cam as a real surprise).

我怀疑应该存在类似的界面与Grizzly本身，但我无法挖出来。

I suspect a similar interface should exist with Grizzly itself, but I was unable to dig it out.

推荐答案

对于Grizzly，相关的API被称为。使用它，它归结为这样：

For Grizzly, the relevant API is called HttpServerProbe. Using this, it comes down to something like this:

final HttpServer server = new org.glassfish.grizzly.http.server.HttpServer();
server.addListener(new NetworkListener("grizzly", "localhost", 8080));
server.getServerConfiguration().addHttpHandler(
    new StaticHttpHandler("/var/www/"), "/");

server.getServerConfiguration().getMonitoringConfig().getWebServerConfig()
  .addProbes(new HttpServerProbe.Adapter() {

    @Override
    public void onRequestReceiveEvent(
        HttpServerFilter filter,
        Connection connection,
        Request request) {

      System.out.println(request.getRemoteAddr());
      MDC.put("http-client", request.getRemoteAddr());
    }

    @Override
    public void onRequestCompleteEvent(
        HttpServerFilter filter,
        Connection connection,
        Response response) {

      MDC.remove("http-client");
    }
}

server.start();

请注意，还有更多可能相关的事件，例如暂停，恢复和取消。这些应该也可以处理，特别是如果使用长轮询（又名Comet，又名 whatnot ）。但基本上这是可以挂钩的地方。

Note that there are more events which might be relevant, like suspend, resume and cancel. These should probably be handled as well, especially if long-polling (aka Comet, aka whatnot) is used. But basically this is the place to hook into.

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