/**
* Copyright (c) 2012, The National Archives <pronom@nationalarchives.gsi.gov.uk>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of the The National Archives nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package uk.gov.nationalarchives.droid.core.interfaces.archive;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.util.zip.GZIPInputStream;
import org.apache.commons.io.FilenameUtils;
import uk.gov.nationalarchives.droid.core.interfaces.AsynchDroid;
import uk.gov.nationalarchives.droid.core.interfaces.IdentificationRequest;
import uk.gov.nationalarchives.droid.core.interfaces.RequestIdentifier;
import uk.gov.nationalarchives.droid.core.interfaces.resource.RequestMetaData;
/**
* @author rflitcroft
*
*/
public class GZipArchiveHandler implements ArchiveHandler {
private IdentificationRequestFactory factory;
private AsynchDroid droid;
/**
* {@inheritDoc}
*/
@Override
public final void handle(IdentificationRequest request) throws IOException {
IdentificationRequest archiveRequest = null;
InputStream in = request.getSourceInputStream();
try {
URI parent = request.getIdentifier().getUri();
long correlationId = request.getIdentifier().getNodeId();
final URI uri = ArchiveFileUtils.toGZipUri(parent);
String path = uri.getSchemeSpecificPart();
String fileName = FilenameUtils.getName(path);
final RequestMetaData metaData = new RequestMetaData(null, null, fileName);
RequestIdentifier identifier = new RequestIdentifier(uri);
identifier.setAncestorId(request.getIdentifier().getAncestorId());
identifier.setParentId(correlationId);
archiveRequest = factory.newRequest(metaData, identifier);
final InputStream gzin = new GZIPInputStream(in);
try {
archiveRequest.open(gzin);
} finally {
if (gzin != null) {
gzin.close();
}
}
} finally {
if (in != null) {
in.close();
}
}
if (archiveRequest != null) {
droid.submit(archiveRequest);
}
}
/**
* @param factory factory for generating identification requests.
*/
public final void setFactory(IdentificationRequestFactory factory) {
this.factory = factory;
}
/**
* @param droidCore the droid core to subnmit requests to.
*/
public final void setDroidCore(AsynchDroid droidCore) {
droid = droidCore;
}
}