/**
*
* Copyright 2005 The Apache Software Foundation
*
* Licensed 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.geronimo.kernel.config;
import java.io.OutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamConstants;
import java.io.PushbackInputStream;
import java.util.Collection;
/**
* @version $Rev: 409817 $ $Date: 2006-05-27 09:56:38 +0200 (Sat, 27 May 2006) $
*/
public class SerializedConfigurationMarshaler implements ConfigurationMarshaler {
private static byte[] SERIALIZED_MAGIC = new byte[] {
(byte) ((ObjectStreamConstants.STREAM_MAGIC >>> 8) & 0xFF),
(byte) ((ObjectStreamConstants.STREAM_MAGIC >>> 0) & 0xFF)
};
public ConfigurationData readConfigurationData(InputStream in) throws IOException, ClassNotFoundException {
PushbackInputStream pushbackInputStream = new PushbackInputStream(in, 2);
byte[] streamHeader = new byte[2];
if (pushbackInputStream.read(streamHeader) != 2) throw new AssertionError("Cound not read stream header");
pushbackInputStream.unread(streamHeader);
// if this isn't a serialized config, fallback to the xstream marshaler
if (SERIALIZED_MAGIC[0] != streamHeader[0] || SERIALIZED_MAGIC[1] != streamHeader[1]) {
ConfigurationMarshaler marshaler;
try {
marshaler = ConfigurationUtil.createConfigurationMarshaler("org.apache.geronimo.kernel.config.xstream.XStreamConfigurationMarshaler");
} catch (Throwable ignored) {
throw new IOException("Input does not contain a Java Object Serialization stream");
}
return marshaler.readConfigurationData(pushbackInputStream);
}
ObjectInputStream oin = new ObjectInputStream(pushbackInputStream);
try {
return (ConfigurationData) oin.readObject();
} finally {
oin.close();
}
}
public void writeConfigurationData(ConfigurationData configurationData, OutputStream out) throws IOException {
ObjectOutputStream oout = new ObjectOutputStream(out);
try {
oout.writeObject(configurationData);
} finally {
if (oout != null) {
try {
oout.flush();
} catch (IOException ignored) {
}
}
}
}
public GBeanState newGBeanState(Collection gbeans) {
return new SerializedGBeanState(gbeans);
}
}