| /* |
| * 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.streams; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.OutputStream; |
| import java.io.Serializable; |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Proxy; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.apache.aries.rsa.provider.fastbin.Activator; |
| |
| public class OutputStreamProxy extends OutputStream implements Serializable { |
| |
| /** field <code>serialVersionUID</code> */ |
| private static final long serialVersionUID = -6008791618074159841L; |
| private int streamID; |
| private String address; |
| private transient StreamProvider streamProvider; |
| private transient int position; |
| private transient byte[] buffer; |
| private transient AtomicInteger chunkCounter; |
| |
| public OutputStreamProxy(int streamID, String address) { |
| this.streamID = streamID; |
| this.address = address; |
| init(); |
| } |
| |
| private final void init() { |
| buffer = new byte[StreamProviderImpl.CHUNK_SIZE]; |
| chunkCounter = new AtomicInteger(-1); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| flush(); |
| streamProvider.close(streamID); |
| } |
| |
| private void closeSilent() { |
| try{ |
| close(); |
| } catch (Exception e) { |
| //NOOP |
| } |
| } |
| |
| private void readObject(ObjectInputStream stream) |
| throws IOException, ClassNotFoundException { |
| stream.defaultReadObject(); |
| InvocationHandler handler = Activator.getInstance().getClient().getProxy(address, StreamProvider.STREAM_PROVIDER_SERVICE_NAME, getClass().getClassLoader()); |
| streamProvider = (StreamProvider)Proxy.newProxyInstance(getClass().getClassLoader(), new Class[]{StreamProvider.class}, handler); |
| init(); |
| } |
| |
| protected void setStreamProvider(StreamProvider streamProvider) { |
| this.streamProvider = streamProvider; |
| } |
| |
| @Override |
| public void write(int b) throws IOException { |
| try{ |
| writeInternal(b); |
| } catch(IOException e) { |
| closeSilent(); |
| throw e; |
| } |
| |
| } |
| |
| @Override |
| public void write(byte[] b, int off, int len) throws IOException { |
| try{ |
| writeInternal(b, off, len); |
| } catch(IOException e) { |
| closeSilent(); |
| throw e; |
| } |
| } |
| |
| public void writeInternal(int b) throws IOException { |
| if(position == buffer.length) |
| flush(); |
| buffer[position++] = (byte)b; |
| |
| } |
| |
| public void writeInternal(byte[] b, int off, int len) throws IOException { |
| if(len <= 0) |
| return; |
| int processed = 0; |
| while(processed < len) { |
| int available = buffer.length - position; |
| int chunkLength = Math.min(len-processed, available); |
| System.arraycopy(b, off, buffer, position, chunkLength); |
| position += chunkLength; |
| processed += chunkLength; |
| if(processed < len) { |
| //there is more to go, but now the buffer is full -> flush it |
| flush(); |
| } |
| } |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| try{ |
| flushInternal(); |
| } catch(IOException e) { |
| closeSilent(); |
| throw e; |
| } |
| } |
| |
| public void flushInternal() throws IOException { |
| if(position==0) |
| return; |
| byte[] toSend = buffer; |
| if(position < buffer.length) { |
| toSend = new byte[position]; |
| System.arraycopy(buffer, 0, toSend, 0, position); |
| } |
| Chunk chunk = new Chunk(toSend, chunkCounter.incrementAndGet()); |
| streamProvider.write(streamID, chunk); |
| position = 0; |
| } |
| } |