/*
* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @library /lib/testlibrary server
* @build jdk.testlibrary.SimpleSSLContext
* @modules java.base/sun.net.www.http
* java.net.http/jdk.internal.net.http.common
* java.net.http/jdk.internal.net.http.frame
* java.net.http/jdk.internal.net.http.hpack
* @run testng/othervm
* -Djdk.internal.httpclient.debug=true
* -Djdk.httpclient.HttpClient.log=errors,requests,responses
* ServerPushWithDiffTypes
*/
import java.io.*;
import java.net.*;
import java.nio.ByteBuffer;
import java.nio.file.*;
import java.net.http.*;
import java.net.http.HttpResponse.BodyHandler;
import java.net.http.HttpResponse.PushPromiseHandler;
import java.net.http.HttpResponse.BodySubscriber;
import java.util.*;
import java.util.concurrent.*;
import jdk.internal.net.http.common.HttpHeadersImpl;
import org.testng.annotations.Test;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.testng.Assert.assertEquals;
public class ServerPushWithDiffTypes {
static Map<String,String> PUSH_PROMISES = Map.of(
"/x/y/z/1", "the first push promise body",
"/x/y/z/2", "the second push promise body",
"/x/y/z/3", "the third push promise body",
"/x/y/z/4", "the fourth push promise body",
"/x/y/z/5", "the fifth push promise body",
"/x/y/z/6", "the sixth push promise body",
"/x/y/z/7", "the seventh push promise body",
"/x/y/z/8", "the eight push promise body",
"/x/y/z/9", "the ninth push promise body"
);
@Test
public static void test() throws Exception {
Http2TestServer server = null;
try {
server = new Http2TestServer(false, 0);
Http2Handler handler =
new ServerPushHandler("the main response body",
PUSH_PROMISES);
server.addHandler(handler, "/");
server.start();
int port = server.getAddress().getPort();
System.err.println("Server listening on port " + port);
HttpClient client = HttpClient.newHttpClient();
// use multi-level path
URI uri = new URI("http://127.0.0.1:" + port + "/foo/a/b/c");
HttpRequest request = HttpRequest.newBuilder(uri).GET().build();
ConcurrentMap<HttpRequest,CompletableFuture<HttpResponse<BodyAndType<?>>>>
results = new ConcurrentHashMap<>();
PushPromiseHandler<BodyAndType<?>> bh = PushPromiseHandler.of(
(pushRequest) -> new BodyAndTypeHandler(pushRequest), results);
CompletableFuture<HttpResponse<BodyAndType<?>>> cf =
client.sendAsync(request, new BodyAndTypeHandler(request), bh);
results.put(request, cf);
cf.join();
assertEquals(results.size(), PUSH_PROMISES.size() + 1);
for (HttpRequest r : results.keySet()) {
URI u = r.uri();
BodyAndType<?> body = results.get(r).get().body();
String result;
// convert all body types to String for easier comparison
if (body.type() == String.class) {
result = (String)body.getBody();
} else if (body.type() == byte[].class) {
byte[] bytes = (byte[])body.getBody();
result = new String(bytes, UTF_8);
} else if (Path.class.isAssignableFrom(body.type())) {
Path path = (Path)body.getBody();
result = new String(Files.readAllBytes(path), UTF_8);
} else {
throw new AssertionError("Unknown:" + body.type());
}
System.err.printf("%s -> %s\n", u.toString(), result.toString());
String expected = PUSH_PROMISES.get(r.uri().getPath());
if (expected == null)
expected = "the main response body";
assertEquals(result, expected);
}
} finally {
server.stop();
}
}
interface BodyAndType<T> {
Class<T> type();
T getBody();
}
static final Path WORK_DIR = Paths.get(".");
static class BodyAndTypeHandler implements BodyHandler<BodyAndType<?>> {
int count;
final HttpRequest request;
BodyAndTypeHandler(HttpRequest request) {
this.request = request;
}
@Override
public HttpResponse.BodySubscriber<BodyAndType<?>> apply(int statusCode,
HttpHeaders responseHeaders) {
int whichType = count++ % 3; // real world may base this on the request metadata
switch (whichType) {
case 0: // String
return new BodyAndTypeSubscriber(BodySubscriber.asString(UTF_8));
case 1: // byte[]
return new BodyAndTypeSubscriber(BodySubscriber.asByteArray());
case 2: // Path
URI u = request.uri();
Path path = Paths.get(WORK_DIR.toString(), u.getPath());
try {
Files.createDirectories(path.getParent());
} catch (IOException ee) {
throw new UncheckedIOException(ee);
}
return new BodyAndTypeSubscriber(BodySubscriber.asFile(path));
default:
throw new AssertionError("Unexpected " + whichType);
}
}
}
static class BodyAndTypeSubscriber<T>
implements HttpResponse.BodySubscriber<BodyAndType<T>>
{
private static class BodyAndTypeImpl<T> implements BodyAndType<T> {
private final Class<T> type;
private final T body;
public BodyAndTypeImpl(Class<T> type, T body) { this.type = type; this.body = body; }
@Override public Class<T> type() { return type; }
@Override public T getBody() { return body; }
}
private final BodySubscriber<?> bodySubscriber;
private final CompletableFuture<BodyAndType<T>> cf;
BodyAndTypeSubscriber(BodySubscriber bodySubscriber) {
this.bodySubscriber = bodySubscriber;
cf = new CompletableFuture<>();
bodySubscriber.getBody().whenComplete(
(r,t) -> cf.complete(new BodyAndTypeImpl(r.getClass(), r)));
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
bodySubscriber.onSubscribe(subscription);
}
@Override
public void onNext(List<ByteBuffer> item) {
bodySubscriber.onNext(item);
}
@Override
public void onError(Throwable throwable) {
bodySubscriber.onError(throwable);
cf.completeExceptionally(throwable);
}
@Override
public void onComplete() {
bodySubscriber.onComplete();
}
@Override
public CompletionStage<BodyAndType<T>> getBody() {
return cf;
}
}
// --- server push handler ---
static class ServerPushHandler implements Http2Handler {
private final String mainResponseBody;
private final Map<String,String> promises;
public ServerPushHandler(String mainResponseBody,
Map<String,String> promises)
throws Exception
{
Objects.requireNonNull(promises);
this.mainResponseBody = mainResponseBody;
this.promises = promises;
}
public void handle(Http2TestExchange exchange) throws IOException {
System.err.println("Server: handle " + exchange);
try (InputStream is = exchange.getRequestBody()) {
is.readAllBytes();
}
if (exchange.serverPushAllowed()) {
pushPromises(exchange);
}
// response data for the main response
try (OutputStream os = exchange.getResponseBody()) {
byte[] bytes = mainResponseBody.getBytes(UTF_8);
exchange.sendResponseHeaders(200, bytes.length);
os.write(bytes);
}
}
private void pushPromises(Http2TestExchange exchange) throws IOException {
URI requestURI = exchange.getRequestURI();
for (Map.Entry<String,String> promise : promises.entrySet()) {
URI uri = requestURI.resolve(promise.getKey());
InputStream is = new ByteArrayInputStream(promise.getValue().getBytes(UTF_8));
HttpHeadersImpl headers = new HttpHeadersImpl();
// TODO: add some check on headers, maybe
headers.addHeader("X-Promise-"+promise.getKey(), promise.getKey());
exchange.serverPush(uri, headers, is);
}
System.err.println("Server: All pushes sent");
}
}
}