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