storlets/src/java/SCommon/src/main/org/openstack/storlet/common/StorletObjectOutputStream.java

76 lines
2.4 KiB
Java

/*----------------------------------------------------------------------------
* Copyright IBM Corp. 2015, 2015 All Rights Reserved
* 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.
* ---------------------------------------------------------------------------
*/
/*
* Author: eranr
*/
package org.openstack.storlet.common;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Iterator;
import org.json.simple.JSONObject;
public class StorletObjectOutputStream extends StorletOutputStream {
private OutputStream MetadataStream_;
public StorletObjectOutputStream(FileDescriptor data_fd,
HashMap<String, String> data_md, FileDescriptor md_fd) {
super(data_fd, data_md);
MetadataStream_ = ((OutputStream) (new FileOutputStream(md_fd)));
}
public OutputStream getStream() {
return stream;
}
public OutputStream getMDStream() {
return MetadataStream_;
}
public void closeMD(){
try {
MetadataStream_.close();
} catch (IOException e) {
}
}
@SuppressWarnings("unchecked")
public void setMetadata(Map<String, String> md) throws StorletException {
JSONObject jobj = new JSONObject();
Iterator<Map.Entry<String, String>> it = md.entrySet().iterator();
while (it.hasNext()) {
Map.Entry<String, String> pairs = (Map.Entry<String, String>) it
.next();
jobj.put((String) pairs.getKey(), (String) pairs.getValue());
it.remove();
}
try {
MetadataStream_.write(jobj.toString().getBytes());
} catch (IOException e) {
throw new StorletException("Failed to set metadata " + e.toString());
} finally {
closeMD();
}
}
}