/
MetadataFileWriterArc.java
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/
MetadataFileWriterArc.java
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/*
* #%L
* Netarchivesuite - harvester
* %%
* Copyright (C) 2005 - 2014 The Royal Danish Library, the Danish State and University Library,
* the National Library of France and the Austrian National Library.
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/lgpl-2.1.html>.
* #L%
*/
package dk.netarkivet.harvester.harvesting.metadata;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import org.apache.commons.io.IOUtils;
import org.jwat.arc.ArcFileNaming;
import org.jwat.arc.ArcFileNamingSingleFile;
import org.jwat.arc.ArcFileWriter;
import org.jwat.arc.ArcFileWriterConfig;
import org.jwat.arc.ArcHeader;
import org.jwat.arc.ArcRecord;
import org.jwat.arc.ArcRecordBase;
import org.jwat.arc.ArcVersion;
import org.jwat.arc.ArcVersionBlock;
import org.jwat.arc.ArcVersionHeader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import dk.netarkivet.common.exceptions.IOFailure;
import dk.netarkivet.common.utils.SystemUtils;
/**
* MetadataFileWriter that writes to ARC files.
*/
public class MetadataFileWriterArc extends MetadataFileWriter {
private static final Logger log = LoggerFactory.getLogger(MetadataFileWriterArc.class);
/** Writer to this jobs metadatafile. This is closed when the metadata is marked as ready. */
private ArcFileWriter writer = null;
/**
* Create a <code>MetadataFileWriter</code> for ARC output.
*
* @param metadataARCFile The metadata ARC <code>File</code>
* @return <code>MetadataFileWriter</code> for writing metadata files in ARC
*/
public static MetadataFileWriter createWriter(File metadataARCFile) {
MetadataFileWriterArc mtfw = new MetadataFileWriterArc();
ArcFileNaming naming = new ArcFileNamingSingleFile(metadataARCFile);
ArcFileWriterConfig config = new ArcFileWriterConfig(metadataARCFile.getParentFile(), compressRecords(), Long.MAX_VALUE, true);
mtfw.writer = ArcFileWriter.getArcWriterInstance(naming, config);
mtfw.open();
return mtfw;
}
protected void open() {
ArcVersionHeader versionHeader;
ArcRecordBase record;
byte[] versionHeaderBytes;
try {
writer.open();
versionHeader = ArcVersionHeader.create(ArcVersion.VERSION_1, "InternetArchive");
versionHeader.rebuild();
versionHeaderBytes = versionHeader.getHeader();
record = ArcVersionBlock.createRecord(writer.writer);
record.header.recordFieldVersion = 1;
record.header.urlStr = "filedesc://" + writer.getFile().getName();
record.header.ipAddressStr = "0.0.0.0";
record.header.archiveDate = new Date();
record.header.contentTypeStr = "text/plain";
record.header.archiveLength = new Long(versionHeaderBytes.length);
writer.writer.writeHeader(record);
writer.writer.writePayload(versionHeaderBytes);
writer.writer.closeRecord();
} catch (IOException e) {
throw new IOFailure("Error opening MetadataFileWriterArc", e);
}
}
@Override
public void close() {
if (writer != null) {
try {
writer.close();
} catch (IOException e) {
throw new IOFailure("Error closing MetadataFileWriterArc", e);
}
writer = null;
}
}
@Override
public File getFile() {
return writer.getFile();
}
@Override
public void writeFileTo(File file, String uri, String mime) {
writeTo(file, uri, mime);
}
/**
* Writes a File to an ArcWriter, if available, otherwise logs the failure to the class-logger.
*
* @param fileToArchive the File to archive
* @param URL the URL with which it is stored in the arcfile
* @param mimetype The mimetype of the File-contents
* @return true, if file exists, and is written to the arcfile.
*/
@Override
public boolean writeTo(File fileToArchive, String URL, String mimetype) {
if (!fileToArchive.isFile()) {
throw new IOFailure("Not a file: " + fileToArchive.getPath());
}
log.info("Writing file '{}' to ARC file: {}", fileToArchive, fileToArchive.length());
InputStream in = null;
try {
ArcRecordBase record = ArcRecord.createRecord(writer.writer);
ArcHeader header = record.header;
header.urlStr = URL;
header.archiveDate = new Date(fileToArchive.lastModified());
header.ipAddressStr = SystemUtils.getLocalIP();
header.contentTypeStr = mimetype;
header.archiveLength = fileToArchive.length();
in = new FileInputStream(fileToArchive);
writer.writer.writeHeader(record);
writer.writer.streamPayload(in);
writer.writer.closeRecord();
} catch (FileNotFoundException e) {
throw new IOFailure("Unable to open file: " + fileToArchive.getPath(), e);
} catch (IOException e) {
throw new IOFailure("Epic IO fail while writing to ARC file: " + fileToArchive.getPath(), e);
} finally {
IOUtils.closeQuietly(in);
}
return true;
}
/* Copied from the ArcWriter. (Before change to JWAT) */
@Override
public void write(String uri, String contentType, String hostIP, long fetchBeginTimeStamp, byte[] payload)
throws IOException {
ByteArrayInputStream in = null;
try {
ArcRecordBase record = ArcRecord.createRecord(writer.writer);
ArcHeader header = record.header;
header.urlStr = uri;
header.archiveDate = new Date(fetchBeginTimeStamp);
header.ipAddressStr = hostIP;
header.archiveLength = new Long(payload.length);
header.contentTypeStr = contentType;
in = new ByteArrayInputStream(payload);
writer.writer.writeHeader(record);
writer.writer.streamPayload(in);
writer.writer.closeRecord();
} catch (IOException e) {
throw new IOFailure("Epic IO fail while writing payload to ARC file.", e);
} finally {
IOUtils.closeQuietly(in);
}
}
}