| /* |
| * 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.aries.rsa.provider.fastbin.api; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| |
| import org.fusesource.hawtbuf.DataByteArrayInputStream; |
| import org.fusesource.hawtbuf.DataByteArrayOutputStream; |
| import org.fusesource.hawtbuf.proto.PBMessage; |
| import org.fusesource.hawtbuf.proto.PBMessageFactory; |
| |
| /** |
| * <p> |
| * </p> |
| * |
| */ |
| @SuppressWarnings("rawtypes") |
| public class ProtobufSerializationStrategy implements SerializationStrategy { |
| |
| public static final ProtobufSerializationStrategy INSTANCE = new ProtobufSerializationStrategy(); |
| |
| public String name() { |
| return "protobuf"; |
| } |
| |
| private void encodeProtobuf(Class<?> type, Object arg, DataByteArrayOutputStream target) throws IOException { |
| if( !PBMessage.class.isAssignableFrom(type) ) { |
| throw new IllegalArgumentException("Invalid "+name()+" serialization method: method argument not a "+PBMessage.class.getName()); |
| } |
| PBMessage msg = (PBMessage) arg; |
| if( msg==null ) { |
| return; |
| } |
| msg.freeze().writeUnframed(target); |
| } |
| |
| private Object decodeProtobuf(Class<?> type, DataByteArrayInputStream source) throws IllegalAccessException, NoSuchFieldException, IOException { |
| if( !PBMessage.class.isAssignableFrom(type) ) { |
| throw new IllegalArgumentException("Invalid "+name()+" serialization method: method argument not a "+PBMessage.class.getName()); |
| } |
| |
| // Get the factory instance... |
| PBMessageFactory factory = (PBMessageFactory) type.getEnclosingClass().getField("FACTORY").get(null); |
| PBMessage msg = factory.parseUnframed(source); |
| String name = type.getName(); |
| Object rc; |
| if( name.endsWith("$Getter") || name.endsWith("$Buffer") ) { |
| // Interface is ok we us giving them a read only impl. |
| rc = msg; |
| } else { |
| // They want a read/write impl. |
| rc = msg.copy(); |
| } |
| return rc; |
| } |
| |
| public void encodeRequest(ClassLoader loader, Class<?>[] types, Object[] args, DataByteArrayOutputStream target) throws IOException { |
| if( types.length == 0 ) { |
| return; |
| } else if( types.length == 1 ) { |
| encodeProtobuf(types[0], args[0], target); |
| } else { |
| throw new IllegalArgumentException("Invalid "+name()+" serialization method: methods must have zero or one argument."); |
| } |
| } |
| |
| public void decodeRequest(ClassLoader loader, Class<?>[] types, DataByteArrayInputStream source, Object[] target) throws IOException, ClassNotFoundException, NoSuchFieldException, IllegalAccessException { |
| if( types.length == 0 ) { |
| return; |
| } else if( types.length == 1 ) { |
| target[0] = decodeProtobuf(types[0], source); |
| } else { |
| throw new IllegalArgumentException("Invalid "+name()+" serialization method: methods must have zero or one argument."); |
| } |
| } |
| |
| public void encodeResponse(ClassLoader loader, Class<?> type, Object value, Throwable error, DataByteArrayOutputStream target) throws IOException, ClassNotFoundException { |
| if( error!=null ) { |
| target.writeBoolean(true); |
| target.writeUTF(error.getClass().getName()); |
| target.writeUTF(error.getMessage()); |
| } else { |
| target.writeBoolean(false); |
| encodeProtobuf(type, value, target); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public void decodeResponse(ClassLoader loader, Class<?> type, DataByteArrayInputStream source, AsyncCallback result) throws IOException, ClassNotFoundException, NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException, InstantiationException { |
| if( source.readBoolean() ) { |
| String className = source.readUTF(); |
| String message = source.readUTF(); |
| |
| Throwable error; |
| try { |
| // try to build the exception... |
| Constructor<?> ctr = loader.loadClass(className).getConstructor(String.class); |
| error = (Throwable) ctr.newInstance(message); |
| } catch (Throwable e) { |
| // fallback to something simple.. |
| error = new RuntimeException(className+": "+message); |
| } |
| result.onFailure(error); |
| |
| } else { |
| result.onSuccess(decodeProtobuf(type, source)); |
| } |
| |
| } |
| |
| } |