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//
// ========================================================================
// Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.websocket.jsr356.client;
import javax.websocket.ClientEndpoint;
import javax.websocket.ClientEndpointConfig;
import javax.websocket.DeploymentException;
import javax.websocket.OnMessage;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.common.events.EventDriver;
import org.eclipse.jetty.websocket.common.events.EventDriverImpl;
import org.eclipse.jetty.websocket.jsr356.annotations.JsrEvents;
import org.eclipse.jetty.websocket.jsr356.annotations.OnMessageCallable;
import org.eclipse.jetty.websocket.jsr356.endpoints.EndpointInstance;
import org.eclipse.jetty.websocket.jsr356.endpoints.JsrAnnotatedEventDriver;
/**
* Event Driver for classes annotated with @{@link ClientEndpoint}
*/
public class JsrClientEndpointImpl implements EventDriverImpl
{
@Override
public EventDriver create(Object websocket, WebSocketPolicy policy) throws DeploymentException
{
if (!(websocket instanceof EndpointInstance))
{
throw new IllegalStateException(String.format("Websocket %s must be an %s",websocket.getClass().getName(),EndpointInstance.class.getName()));
}
EndpointInstance ei = (EndpointInstance)websocket;
AnnotatedClientEndpointMetadata metadata = (AnnotatedClientEndpointMetadata)ei.getMetadata();
JsrEvents<ClientEndpoint, ClientEndpointConfig> events = new JsrEvents<>(metadata);
// Handle @OnMessage maxMessageSizes
int maxBinaryMessage = getMaxMessageSize(policy.getMaxBinaryMessageSize(),metadata.onBinary,metadata.onBinaryStream);
int maxTextMessage = getMaxMessageSize(policy.getMaxTextMessageSize(),metadata.onText,metadata.onTextStream);
policy.setMaxBinaryMessageSize(maxBinaryMessage);
policy.setMaxTextMessageSize(maxTextMessage);
return new JsrAnnotatedEventDriver(policy,ei,events);
}
@Override
public String describeRule()
{
return "class is annotated with @" + ClientEndpoint.class.getName();
}
private int getMaxMessageSize(int defaultMaxMessageSize, OnMessageCallable... onMessages)
{
for (OnMessageCallable callable : onMessages)
{
if (callable == null)
{
continue;
}
OnMessage onMsg = callable.getMethod().getAnnotation(OnMessage.class);
if (onMsg == null)
{
continue;
}
if (onMsg.maxMessageSize() > 0)
{
return (int)onMsg.maxMessageSize();
}
}
return defaultMaxMessageSize;
}
@Override
public boolean supports(Object websocket)
{
if (!(websocket instanceof EndpointInstance))
{
return false;
}
EndpointInstance ei = (EndpointInstance)websocket;
Object endpoint = ei.getEndpoint();
ClientEndpoint anno = endpoint.getClass().getAnnotation(ClientEndpoint.class);
return (anno != null);
}
}
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