| // |
| // ======================================================================== |
| // 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.metadata; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import javax.websocket.Encoder; |
| |
| import org.eclipse.jetty.websocket.api.InvalidWebSocketException; |
| import org.eclipse.jetty.websocket.common.events.annotated.InvalidSignatureException; |
| import org.eclipse.jetty.websocket.common.util.ReflectUtils; |
| import org.eclipse.jetty.websocket.jsr356.MessageType; |
| |
| public class EncoderMetadataSet extends CoderMetadataSet<Encoder, EncoderMetadata> |
| { |
| @Override |
| protected List<EncoderMetadata> discover(Class<? extends Encoder> encoder) |
| { |
| List<EncoderMetadata> metadatas = new ArrayList<>(); |
| |
| if (Encoder.Binary.class.isAssignableFrom(encoder)) |
| { |
| Class<?> objType = getEncoderType(encoder,Encoder.Binary.class); |
| metadatas.add(new EncoderMetadata(encoder,objType,MessageType.BINARY,false)); |
| } |
| if (Encoder.BinaryStream.class.isAssignableFrom(encoder)) |
| { |
| Class<?> objType = getEncoderType(encoder,Encoder.BinaryStream.class); |
| metadatas.add(new EncoderMetadata(encoder,objType,MessageType.BINARY,true)); |
| } |
| if (Encoder.Text.class.isAssignableFrom(encoder)) |
| { |
| Class<?> objType = getEncoderType(encoder,Encoder.Text.class); |
| metadatas.add(new EncoderMetadata(encoder,objType,MessageType.TEXT,false)); |
| } |
| if (Encoder.TextStream.class.isAssignableFrom(encoder)) |
| { |
| Class<?> objType = getEncoderType(encoder,Encoder.TextStream.class); |
| metadatas.add(new EncoderMetadata(encoder,objType,MessageType.TEXT,true)); |
| } |
| |
| if (!ReflectUtils.isDefaultConstructable(encoder)) |
| { |
| throw new InvalidSignatureException("Encoder must have public, no-args constructor: " + encoder.getName()); |
| } |
| |
| if (metadatas.size() <= 0) |
| { |
| throw new InvalidSignatureException("Not a valid Encoder class: " + encoder.getName() + " implements no " + Encoder.class.getName() + " interfaces"); |
| } |
| |
| return metadatas; |
| } |
| |
| private Class<?> getEncoderType(Class<? extends Encoder> encoder, Class<?> interfaceClass) |
| { |
| Class<?> decoderClass = ReflectUtils.findGenericClassFor(encoder,interfaceClass); |
| if (decoderClass == null) |
| { |
| StringBuilder err = new StringBuilder(); |
| err.append("Invalid type declared for interface "); |
| err.append(interfaceClass.getName()); |
| err.append(" on class "); |
| err.append(encoder); |
| throw new InvalidWebSocketException(err.toString()); |
| } |
| return decoderClass; |
| } |
| |
| protected final void register(Class<?> type, Class<? extends Encoder> encoder, MessageType msgType, boolean streamed) |
| { |
| EncoderMetadata metadata = new EncoderMetadata(encoder,type,msgType,streamed); |
| trackMetadata(metadata); |
| } |
| } |