| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.knox.gateway.websockets; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.charset.StandardCharsets; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import javax.websocket.ClientEndpoint; |
| import javax.websocket.CloseReason; |
| import javax.websocket.OnClose; |
| import javax.websocket.OnError; |
| import javax.websocket.OnMessage; |
| import javax.websocket.OnOpen; |
| import javax.websocket.PongMessage; |
| import javax.websocket.Session; |
| |
| import org.eclipse.jetty.util.BlockingArrayQueue; |
| |
| /** |
| * A Test websocket client |
| * |
| */ |
| @ClientEndpoint |
| public class WebsocketClient { |
| |
| private Session session; |
| public CloseReason close; |
| public MessageQueue messageQueue = new MessageQueue(); |
| public List<Throwable> errors = new LinkedList<>(); |
| public CountDownLatch closeLatch = new CountDownLatch(1); |
| |
| public boolean onError; |
| public String errorMessage; |
| |
| @OnClose |
| public void onWebSocketClose(CloseReason reason) { |
| this.close = reason; |
| closeLatch.countDown(); |
| } |
| |
| @OnMessage |
| public void onMessage(String message) { |
| this.messageQueue.offer(message); |
| } |
| |
| @OnMessage |
| public void onMessage(PongMessage message) { |
| ByteBuffer byteMessage = message.getApplicationData(); |
| String s = StandardCharsets.UTF_8.decode(byteMessage).toString(); |
| this.messageQueue.offer(s); |
| } |
| |
| @OnOpen |
| public void onOpen(Session session) { |
| this.session = session; |
| } |
| |
| @OnError |
| public void onError(Session session, Throwable thr) { |
| errors.add(thr); |
| this.onError = true; |
| this.errorMessage = thr.toString(); |
| } |
| |
| public void sendText(String text) throws IOException { |
| if (session != null) { |
| session.getBasicRemote().sendText(text); |
| } |
| } |
| |
| /** |
| * Check whether we have expected close code |
| * |
| * @param expectedCloseCode code to expect on close |
| * @param timeoutDuration duration to wait |
| * @param timeoutUnit duration unit |
| * @throws TimeoutException if waiting too long to close |
| */ |
| public void awaitClose(int expectedCloseCode, int timeoutDuration, TimeUnit timeoutUnit) |
| throws TimeoutException { |
| |
| long msDur = TimeUnit.MILLISECONDS.convert(timeoutDuration, timeoutUnit); |
| long now = System.currentTimeMillis(); |
| long expireOn = now + msDur; |
| |
| while (close == null) { |
| try { |
| TimeUnit.MILLISECONDS.sleep(10); |
| } catch (InterruptedException ignore) { |
| /* ignore */ |
| } |
| if ((System.currentTimeMillis() > expireOn)) { |
| throw new TimeoutException("Timed out reading message from queue"); |
| } |
| |
| } |
| |
| } |
| |
| public class MessageQueue extends BlockingArrayQueue<String> { |
| |
| public void awaitMessages(int expectedMessageCount, int timeoutDuration, |
| TimeUnit timeoutUnit) throws TimeoutException { |
| long msDur = TimeUnit.MILLISECONDS.convert(timeoutDuration, timeoutUnit); |
| long now = System.currentTimeMillis(); |
| long expireOn = now + msDur; |
| |
| while (this.size() < expectedMessageCount) { |
| try { |
| TimeUnit.MILLISECONDS.sleep(20); |
| } catch (InterruptedException ignore) { |
| /* ignore */ |
| } |
| if ((System.currentTimeMillis() > expireOn)) { |
| throw new TimeoutException("Timed out reading message from queue"); |
| } |
| |
| } |
| } |
| } |
| } |