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package com.sun.jersey.server.impl.container.httpserver;
import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.core.header.InBoundHeaders;
import com.sun.jersey.server.impl.application.WebApplicationImpl;
import com.sun.jersey.spi.container.ContainerListener;
import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerResponse;
import com.sun.jersey.spi.container.ContainerResponseWriter;
import com.sun.jersey.spi.container.ReloadListener;
import com.sun.jersey.spi.container.WebApplication;
import com.sun.net.httpserver.Headers;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpsExchange;
import javax.ws.rs.core.UriBuilder;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
/**
* A {@link HttpHandler} for a {@link WebApplicationImpl}.
*
* @author Paul.Sandoz@Sun.Com
*/
public class HttpHandlerContainer implements HttpHandler, ContainerListener {
private WebApplication application;
public HttpHandlerContainer(WebApplication app) throws ContainerException {
this.application = app;
}
private final static class Writer implements ContainerResponseWriter {
final HttpExchange exchange;
Writer(HttpExchange exchange) {
this.exchange = exchange;
}
public OutputStream writeStatusAndHeaders(long contentLength,
ContainerResponse cResponse) throws IOException {
Headers eh = exchange.getResponseHeaders();
for (Map.Entry<String, List<Object>> e : cResponse.getHttpHeaders().entrySet()) {
List<String> values = new ArrayList<String>();
for (Object v : e.getValue())
values.add(ContainerResponse.getHeaderValue(v));
eh.put(e.getKey(), values);
}
if (cResponse.getStatus() == 204) {
// Work around bug in LW HTTP server
// http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6886436
exchange.sendResponseHeaders(cResponse.getStatus(), -1);
} else {
exchange.sendResponseHeaders(cResponse.getStatus(),
getResponseLength(contentLength));
}
return exchange.getResponseBody();
}
public void finish() throws IOException {
}
private long getResponseLength(long contentLength) {
if (contentLength == 0)
return -1;
if (contentLength < 0)
return 0;
return contentLength;
}
}
public void handle(HttpExchange exchange) throws IOException {
WebApplication _application = application;
/**
* This is a URI that contains the path, query and
* fragment components.
*/
URI exchangeUri = exchange.getRequestURI();
/**
* The base path specified by the HTTP context of the HTTP handler.
* It is in decoded form.
*/
String decodedBasePath = exchange.getHttpContext().getPath();
// Ensure that the base path ends with a '/'
if (!decodedBasePath.endsWith("/")) {
if (decodedBasePath.equals(exchangeUri.getPath())) {
/**
* This is an edge case where the request path
* does not end in a '/' and is equal to the context
* path of the HTTP handler.
* Both the request path and base path need to end in a '/'
* Currently the request path is modified.
* TODO support redirection in accordance with resource
* configuration feature.
*/
exchangeUri = UriBuilder.fromUri(exchangeUri).
path("/").build();
}
decodedBasePath += "/";
}
/*
* The following is madness, there is no easy way to get
* the complete URI of the HTTP request!!
*
* TODO this is missing the user information component, how
* can this be obtained?
*/
String scheme = (exchange instanceof HttpsExchange) ? "https" : "http";
URI baseUri = null;
try {
List<String> hostHeader = exchange.getRequestHeaders().get("Host");
if (hostHeader != null) {
StringBuilder sb = new StringBuilder(scheme);
sb.append("://").append(hostHeader.get(0)).append(decodedBasePath);
baseUri = new URI(sb.toString());
} else {
InetSocketAddress addr = exchange.getLocalAddress();
baseUri = new URI(scheme, null, addr.getHostName(), addr.getPort(),
decodedBasePath, null, null);
}
} catch (URISyntaxException ex) {
throw new IllegalArgumentException(ex);
}
final URI requestUri = baseUri.resolve(exchangeUri);
final ContainerRequest cRequest = new ContainerRequest(
_application,
exchange.getRequestMethod(),
baseUri,
requestUri,
getHeaders(exchange),
exchange.getRequestBody()
);
try {
_application.handleRequest(cRequest, new Writer(exchange));
} catch (RuntimeException e) {
e.printStackTrace();
exchange.getResponseHeaders().clear();
exchange.sendResponseHeaders(500, -1);
} catch (IOException ex) {
ex.printStackTrace();
exchange.getResponseHeaders().clear();
exchange.sendResponseHeaders(500, -1);
throw ex;
}
exchange.getResponseBody().flush();
exchange.close();
}
private InBoundHeaders getHeaders(HttpExchange exchange) {
InBoundHeaders rh = new InBoundHeaders();
Headers eh = exchange.getRequestHeaders();
for (Entry<String, List<String>> e : eh.entrySet()) {
rh.put(e.getKey(), e.getValue());
}
return rh;
}
// ContainerListener
public void onReload() {
WebApplication oldApplication = application;
application = application.clone();
if (application.getFeaturesAndProperties() instanceof ReloadListener)
((ReloadListener) application.getFeaturesAndProperties()).onReload();
oldApplication.destroy();
}
}