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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2013-2015 Oracle and/or its affiliates. All rights reserved.
*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
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* file and include the License file at packager/legal/LICENSE.txt.
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*
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*/
package org.glassfish.grizzly.websockets;
import org.glassfish.grizzly.Buffer;
import org.glassfish.grizzly.Connection;
import org.glassfish.grizzly.Grizzly;
import org.glassfish.grizzly.GrizzlyFuture;
import org.glassfish.grizzly.memory.Buffers;
import org.glassfish.grizzly.memory.MemoryManager;
import org.glassfish.grizzly.websockets.frametypes.PingFrameType;
import org.glassfish.grizzly.websockets.frametypes.PongFrameType;
import java.util.Collection;
import java.util.EnumSet;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.atomic.AtomicReference;
import java.util.logging.Logger;
/**
* Generic WebSocket implementation. Typically used by client implementations.
*/
public class SimpleWebSocket implements WebSocket {
private static final Logger LOGGER = Grizzly.logger(DefaultWebSocket.class);
protected final Queue listeners =
new ConcurrentLinkedQueue();
protected final ProtocolHandler protocolHandler;
protected Broadcaster broadcaster = new DummyBroadcaster();
protected enum State {
NEW, CONNECTED, CLOSING, CLOSED
}
protected final EnumSet connected = EnumSet.range(State.CONNECTED, State.CLOSING);
protected final AtomicReference state = new AtomicReference(State.NEW);
public SimpleWebSocket(final ProtocolHandler protocolHandler,
final WebSocketListener... listeners) {
this.protocolHandler = protocolHandler;
for (WebSocketListener listener : listeners) {
add(listener);
}
protocolHandler.setWebSocket(this);
}
public Collection getListeners() {
return listeners;
}
@Override
public final boolean add(WebSocketListener listener) {
return listeners.add(listener);
}
@Override
public final boolean remove(WebSocketListener listener) {
return listeners.remove(listener);
}
@Override
public boolean isConnected() {
return connected.contains(state.get());
}
public void setClosed() {
state.set(State.CLOSED);
}
@Override
public void onClose(final DataFrame frame) {
if (state.compareAndSet(State.CONNECTED, State.CLOSING)) {
final ClosingFrame closing = (ClosingFrame) frame;
protocolHandler.close(closing.getCode(), closing.getTextPayload());
} else {
state.set(State.CLOSED);
protocolHandler.doClose();
}
WebSocketListener listener;
while ((listener = listeners.poll()) != null) {
listener.onClose(this, frame);
}
}
@Override
public void onConnect() {
state.set(State.CONNECTED);
for (WebSocketListener listener : listeners) {
listener.onConnect(this);
}
}
@Override
public void onFragment(boolean last, byte[] fragment) {
for (WebSocketListener listener : listeners) {
listener.onFragment(this, fragment, last);
}
}
@Override
public void onFragment(boolean last, String fragment) {
for (WebSocketListener listener : listeners) {
listener.onFragment(this, fragment, last);
}
}
@Override
public void onMessage(byte[] data) {
for (WebSocketListener listener : listeners) {
listener.onMessage(this, data);
}
}
@Override
public void onMessage(String text) {
for (WebSocketListener listener : listeners) {
listener.onMessage(this, text);
}
}
@Override
public void onPing(DataFrame frame) {
send(new DataFrame(new PongFrameType(), frame.getBytes()));
for (WebSocketListener listener : listeners) {
listener.onPing(this, frame.getBytes());
}
}
@Override
public void onPong(DataFrame frame) {
for (WebSocketListener listener : listeners) {
listener.onPong(this, frame.getBytes());
}
}
@Override
public void close() {
close(NORMAL_CLOSURE, null);
}
@Override
public void close(int code) {
close(code, null);
}
@Override
public void close(int code, String reason) {
if (state.compareAndSet(State.CONNECTED, State.CLOSING)) {
protocolHandler.close(code, reason);
}
}
@Override
public GrizzlyFuture send(byte[] data) {
if (isConnected()) {
return protocolHandler.send(data);
} else {
throw new RuntimeException("Socket is not connected.");
}
}
@Override
public GrizzlyFuture send(String data) {
if (isConnected()) {
return protocolHandler.send(data);
} else {
throw new RuntimeException("Socket is not connected.");
}
}
@Override
public void broadcast(Iterable recipients,
String data) {
if (state.get() == State.CONNECTED) {
broadcaster.broadcast(recipients, data);
} else {
throw new RuntimeException("Socket is already closed.");
}
}
@Override
public void broadcast(Iterable recipients,
byte[] data) {
if (state.get() == State.CONNECTED) {
broadcaster.broadcast(recipients, data);
} else {
throw new RuntimeException("Socket is already closed.");
}
}
@Override
public void broadcastFragment(Iterable recipients,
String data, boolean last) {
if (state.get() == State.CONNECTED) {
broadcaster.broadcastFragment(recipients, data, last);
} else {
throw new RuntimeException("Socket is already closed.");
}
}
@Override
public void broadcastFragment(Iterable recipients,
byte[] data, boolean last) {
if (state.get() == State.CONNECTED) {
broadcaster.broadcastFragment(recipients, data, last);
} else {
throw new RuntimeException("Socket is already closed.");
}
}
/**
* {@inheritDoc}
*/
@Override
public GrizzlyFuture sendPing(byte[] data) {
return send(new DataFrame(new PingFrameType(), data));
}
/**
* {@inheritDoc}
*/
@Override
public GrizzlyFuture sendPong(byte[] data) {
return send(new DataFrame(new PongFrameType(), data));
}
private GrizzlyFuture send(DataFrame frame) {
if (isConnected()) {
return protocolHandler.send(frame);
} else {
throw new RuntimeException("Socket is not connected.");
}
}
@Override
public GrizzlyFuture stream(boolean last, String fragment) {
if (isConnected()) {
return protocolHandler.stream(last, fragment);
} else {
throw new RuntimeException("Socket is not connected.");
}
}
@Override
public GrizzlyFuture stream(boolean last, byte[] bytes, int off, int len) {
if (isConnected()) {
return protocolHandler.stream(last, bytes, off, len);
} else {
throw new RuntimeException("Socket is not connected.");
}
}
protected byte[] toRawData(String text) {
return toRawData(text, true);
}
protected byte[] toRawData(byte[] binary) {
return toRawData(binary, true);
}
protected byte[] toRawData(String fragment, boolean last) {
final DataFrame dataFrame = protocolHandler.toDataFrame(fragment, last);
return protocolHandler.frame(dataFrame);
}
protected byte[] toRawData(byte[] binary, boolean last) {
final DataFrame dataFrame = protocolHandler.toDataFrame(binary, last);
return protocolHandler.frame(dataFrame);
}
@SuppressWarnings("unchecked")
protected void sendRaw(byte[] rawData) {
final Connection connection = protocolHandler.getConnection();
final MemoryManager mm = connection.getTransport().getMemoryManager();
final Buffer buffer = Buffers.wrap(mm, rawData);
buffer.allowBufferDispose(false);
connection.write(buffer);
}
protected Broadcaster getBroadcaster() {
return broadcaster;
}
protected void setBroadcaster(Broadcaster broadcaster) {
this.broadcaster = broadcaster;
}
}
