blob: 96a63583c839f2d6f13fa801233cd69b16358b71 [file] [log] [blame]
/**
* 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.maven.mercury.spi.http.client;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import org.apache.maven.mercury.crypto.api.StreamObserver;
import org.apache.maven.mercury.crypto.api.StreamObserverException;
public class ObservableOutputStream extends FilterOutputStream
{
Set<StreamObserver> observers = new HashSet<StreamObserver>();
public ObservableOutputStream(OutputStream out)
{
super(out);
}
public void write(int b) throws IOException
{
notifyListeners(b);
this.out.write(b);
}
public void write(byte[] b, int off, int len) throws IOException
{
notifyListeners(b, off, len);
this.out.write(b, off, len);
}
public void addObserver (StreamObserver o)
{
synchronized (this.observers)
{
this.observers.add(o);
}
}
public void addObservers (Collection<? extends StreamObserver> observers)
{
synchronized (this.observers)
{
this.observers.addAll(observers);
}
}
private void notifyListeners (byte[]b, int off, int len)
throws IOException
{
synchronized (this.observers)
{
for (StreamObserver o: this.observers)
{
try
{
o.bytesReady(b, off, len);
}
catch( StreamObserverException e )
{
throw new IOException(e.getMessage());
}
}
}
}
private void notifyListeners (int b)
throws IOException
{
synchronized (this.observers)
{
for (StreamObserver o: this.observers)
{
try
{
o.byteReady(b);
}
catch( StreamObserverException e )
{
throw new IOException(e.getMessage());
}
}
}
}
}