// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.storage.template;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Map;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.storage.Storage.ImageFormat;
import com.cloud.storage.StorageLayer;
import com.cloud.utils.NumbersUtil;
@Local(value=Processor.class)
public class QCOW2Processor implements Processor {
private static final Logger s_logger = Logger.getLogger(QCOW2Processor.class);
String _name;
StorageLayer _storage;
@Override
public FormatInfo process(String templatePath, ImageFormat format,
String templateName) {
if (format != null) {
s_logger.debug("We currently don't handle conversion from " + format + " to QCOW2.");
return null;
}
String qcow2Path = templatePath + File.separator + templateName + "." + ImageFormat.QCOW2.getFileExtension();
if (!_storage.exists(qcow2Path)) {
s_logger.debug("Unable to find the qcow2 file: " + qcow2Path);
return null;
}
FormatInfo info = new FormatInfo();
info.format = ImageFormat.QCOW2;
info.filename = templateName + "." + ImageFormat.QCOW2.getFileExtension();
File qcow2File = _storage.getFile(qcow2Path);
info.size = _storage.getSize(qcow2Path);
FileInputStream strm = null;
byte[] b = new byte[8];
try {
strm = new FileInputStream(qcow2File);
strm.skip(24);
strm.read(b);
} catch (Exception e) {
s_logger.warn("Unable to read qcow2 file " + qcow2Path, e);
return null;
} finally {
if (strm != null) {
try {
strm.close();
} catch (IOException e) {
}
}
}
long templateSize = NumbersUtil.bytesToLong(b);
info.virtualSize = templateSize;
return info;
}
@Override
public boolean configure(String name, Map<String, Object> params)
throws ConfigurationException {
_name = name;
_storage = (StorageLayer)params.get(StorageLayer.InstanceConfigKey);
if (_storage == null) {
throw new ConfigurationException("Unable to get storage implementation");
}
return true;
}
@Override
public String getName() {
return _name;
}
@Override
public boolean start() {
// TODO Auto-generated method stub
return true;
}
@Override
public boolean stop() {
// TODO Auto-generated method stub
return true;
}
}