/*
* 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.tomcat.websocket;
import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import javax.servlet.ServletContextEvent;
import javax.websocket.DeploymentException;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.RemoteEndpoint.Basic;
import javax.websocket.Session;
import javax.websocket.server.ServerContainer;
import javax.websocket.server.ServerEndpoint;
import org.apache.tomcat.websocket.server.Constants;
import org.apache.tomcat.websocket.server.WsContextListener;
/**
* Sends {@link #MESSAGE_COUNT} messages of size {@link #MESSAGE_SIZE} bytes as
* quickly as possible after the client sends its first message.
*/
public class TesterFirehoseServer {
public static final int MESSAGE_COUNT = 100000;
public static final String MESSAGE;
public static final int MESSAGE_SIZE = 1024;
public static final int WAIT_TIME_MILLIS = 60000;
public static final int SEND_TIME_OUT_MILLIS = 5000;
static {
StringBuilder sb = new StringBuilder(MESSAGE_SIZE);
for (int i = 0; i < MESSAGE_SIZE; i++) {
sb.append('x');
}
MESSAGE = sb.toString();
}
public static class Config extends WsContextListener {
public static final String PATH = "/firehose";
@Override
public void contextInitialized(ServletContextEvent sce) {
super.contextInitialized(sce);
ServerContainer sc =
(ServerContainer) sce.getServletContext().getAttribute(
Constants.SERVER_CONTAINER_SERVLET_CONTEXT_ATTRIBUTE);
try {
sc.addEndpoint(Endpoint.class);
} catch (DeploymentException e) {
throw new IllegalStateException(e);
}
}
}
@ServerEndpoint(Config.PATH)
public static class Endpoint {
private static AtomicInteger openConnectionCount = new AtomicInteger(0);
private static AtomicInteger errorCount = new AtomicInteger(0);
private volatile boolean started = false;
public static int getOpenConnectionCount() {
return openConnectionCount.intValue();
}
public static int getErrorCount() {
return errorCount.intValue();
}
@OnOpen
public void onOpen() {
openConnectionCount.incrementAndGet();
}
@OnMessage
public void onMessage(Session session,
@SuppressWarnings("unused") String msg) throws IOException {
if (started) {
return;
}
synchronized (this) {
if (started) {
return;
} else {
started = true;
}
}
session.getUserProperties().put(
"org.apache.tomcat.websocket.BLOCKING_SEND_TIMEOUT",
Long.valueOf(SEND_TIME_OUT_MILLIS));
Basic remote = session.getBasicRemote();
remote.setBatchingAllowed(true);
for (int i = 0; i < MESSAGE_COUNT; i++) {
remote.sendText(MESSAGE);
}
// Ensure remaining messages are flushed
remote.setBatchingAllowed(false);
}
@OnError
public void onError(@SuppressWarnings("unused") Throwable t) {
errorCount.incrementAndGet();
}
@OnClose
public void onClose() {
openConnectionCount.decrementAndGet();
}
}
}