Metacat

/**

 *  '$RCSfile$'

 *    Purpose: A Class for upgrading the database to version 1.5

 *  Copyright: 2000 Regents of the University of California and the

 *             National Center for Ecological Analysis and Synthesis

 *    Authors: Saurabh Garg

 *

 *   '$Author$'

 *     '$Date$'

 * '$Revision$'

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 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 Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

package edu.ucsb.nceas.metacat.dataone;

import java.io.InputStream;

import java.math.BigInteger;

import java.security.NoSuchAlgorithmException;

import java.sql.SQLException;

import java.util.Map;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.xpath.XPathExpressionException;

import org.apache.commons.io.IOUtils;

import org.dataone.client.ObjectFormatCache;

import org.dataone.service.exceptions.NotFound;

import org.dataone.service.types.v1.Checksum;

import org.dataone.service.types.v1.Identifier;

import org.dataone.service.types.v1.NodeReference;

import org.dataone.service.types.v1.ObjectFormatIdentifier;

import org.dataone.service.types.v1.Subject;

import org.dataone.service.types.v1.SystemMetadata;

import org.dataone.service.types.v1.util.ChecksumUtil;

import org.ecoinformatics.datamanager.database.DatabaseConnectionPoolInterface;

import org.ecoinformatics.datamanager.parser.DataPackage;

import org.jibx.runtime.JiBXException;

import org.xml.sax.SAXException;

import edu.ucsb.nceas.metacat.AccessionNumber;

import edu.ucsb.nceas.metacat.AccessionNumberException;

import edu.ucsb.nceas.metacat.McdbDocNotFoundException;

import edu.ucsb.nceas.metacat.McdbException;

import edu.ucsb.nceas.metacat.dataone.hazelcast.HazelcastService;

import edu.ucsb.nceas.metacat.dataquery.MetacatDatabaseConnectionPoolFactory;

import edu.ucsb.nceas.metacat.properties.PropertyService;

import edu.ucsb.nceas.metacat.shared.HandlerException;

import edu.ucsb.nceas.utilities.ParseLSIDException;

import edu.ucsb.nceas.utilities.PropertyNotFoundException;

public class SystemMetadataFactory {

	 *

	 * @param localId

	 *            The local document identifier

	 * @param user

	 *            The user submitting the system metadata document

	 * @param groups

	 *            The groups the user belongs to

	 *

	 * @return sysMeta The system metadata object created

	 * @throws HandlerException

	 * @throws AccessControlException

			IOException, AccessionNumberException, ClassNotFoundException,

			InsufficientKarmaException, ParseLSIDException,

			PropertyNotFoundException, BaseException, NoSuchAlgorithmException,

		logMetacat.debug("provided localId: " + localId);

		SystemMetadata sysMeta = new SystemMetadata();

		sysMeta.setSerialVersion(BigInteger.valueOf(1));

		String guid = null;

		try {

			// get the guid if it exists

			// otherwise create the mapping

							+ dnfe.getMessage());

			logMetacat.debug("Mapping created for " + localId);

			logMetacat.debug("accessionNumber: " + accNum);

		Identifier identifier = new Identifier();

		identifier.setValue(guid);

		sysMeta.setIdentifier(identifier);

		InputStream inputStream;

		try {

			inputStream = MetacatHandler.read(localId);

		} catch (ParseLSIDException ple) {

			logMetacat.debug("There was a problem parsing the LSID from "

					+ localId + ". The error message was: " + ple.getMessage());

			throw ple;

			logMetacat.debug("There was a problem finding a property. "

					+ "The error message was: " + pnfe.getMessage());

			throw pnfe;

		} catch (McdbException me) {

			logMetacat.debug("There was a Metacat problem. "

					+ "The error message was: " + me.getMessage());

			throw me;

		} catch (SQLException sqle) {

			logMetacat.debug("There was a SQL problem. "

					+ "The error message was: " + sqle.getMessage());

			throw sqle;

		} catch (ClassNotFoundException cnfe) {

			logMetacat.debug("There was a problem finding a class. "

					+ "The error message was: " + cnfe.getMessage());

			throw cnfe;

		} catch (IOException ioe) {

			logMetacat.debug("There was an I/O exception. "

					+ "The error message was: " + ioe.getMessage());

			throw ioe;

		} // end try()

		// get additional docinfo

		// set the object format, fall back to defaults

		try {

			try {

				// format is not registered, use default

				if (doctype.trim().equals("BIN")) {

					fmtid = ObjectFormatCache.getInstance().getFormat(

							"application/octet-stream").getFormatId();

				} else {

					fmtid = ObjectFormatCache.getInstance().getFormat(

							"text/plain").getFormatId();

				}

			} catch (NotFound nf) {

								+ nf.getMessage());

				throw nf;

			}

		}

		sysMeta.setFormatId(fmtid);

		// further parse EML documents to get data object format,

		// describes and describedBy information

		if (fmtid == ObjectFormatCache.getInstance().getFormat(

				"eml://ecoinformatics.org/eml-2.0.0").getFormatId()

				|| fmtid == ObjectFormatCache.getInstance().getFormat(

						"eml://ecoinformatics.org/eml-2.0.1").getFormatId()

				|| fmtid == ObjectFormatCache.getInstance().getFormat(

						"eml://ecoinformatics.org/eml-2.1.0").getFormatId()

				|| fmtid == ObjectFormatCache.getInstance().getFormat(

						"eml://ecoinformatics.org/eml-2.1.1").getFormatId()) {

			try {

					MetacatDatabaseConnectionPoolFactory.getDatabaseConnectionPoolInterface();

				DataManager dataManager =

					DataManager.getInstance(connectionPool, connectionPool.getDBAdapterName());

				DataPackage dataPackage = dataManager.parseMetadata(inputStream);

				// iterate through the data objects in the EML doc and add

				// sysmeta

								+ dataPackage.getEntityNumber());

	            Map<Identifier, List<Identifier>> idMap = new HashMap<Identifier, List<Identifier>>();

	            List<Identifier> dataIds = new ArrayList<Identifier>();

				for (int j = 0; j < dataPackage.getEntityList().length; j++) {

					String dataDocUrl = dataPackage.getEntityList()[j].getURL();

					if (dataDocMimeType == null) {

						dataDocMimeType = ObjectFormatCache.getInstance()

								.getFormat("application/octet-stream")

								.getFormatId().getValue();

					}

					String dataDocLocalId = "";

					logMetacat.debug("Data local ID: " + dataDocLocalId);

					logMetacat.debug("Data URL     : " + dataDocUrl);

					logMetacat.debug("Data mime    : " + dataDocMimeType);

					// we only handle ecogrid urls right now

					String ecogridPrefix = "ecogrid://knb/";

					if (dataDocUrl.trim().startsWith(ecogridPrefix)) {

						dataDocLocalId = dataDocUrl.substring(dataDocUrl

								.indexOf(ecogridPrefix)

								+ ecogridPrefix.length());

						// look up the guid for the data

						int dataRev = DocumentUtil.getRevisionFromAccessionNumber(dataDocLocalId);

						SystemMetadata dataSysMeta = null;

						// check if data system metadata exists

						String dataGuidString = null;

						try {

							dataSysMeta = IdentifierManager.getInstance().getSystemMetadata(dataGuidString);

							// System metadata for data doesn't exist yet, so

							// create it

							try {

								logMetacat.debug("Creating a system metadata "

										+ "document for " + dataDocLocalId);

								// now look it up again

								// set the guid

								Identifier dataGuid = new Identifier();

								dataGuid.setValue(dataGuidString);

								// set object format

												+ dataDocMimeType);

								try {

										ObjectFormatCache.getInstance().getFormat(dataDocMimeType).getFormatId();

								} catch (NotFound nfe) {

													+ ". Setting it to application/octet-stream.");

									ObjectFormatIdentifier newFmtid = new ObjectFormatIdentifier();

								// update the values

								// part of the ORE package

								dataIds.add(dataGuid);

							} catch (McdbDocNotFoundException mdnf) {

								mdnf.printStackTrace();

								throw mdnf;

							} catch (NumberFormatException nfe) {

								nfe.printStackTrace();

								throw nfe;

							} catch (AccessionNumberException ane) {

								ane.printStackTrace();

								throw ane;

							} catch (SQLException sqle) {

								sqle.printStackTrace();

								throw sqle;

							} catch (NoSuchAlgorithmException nsae) {

								nsae.printStackTrace();

								throw nsae;

							} catch (IOException ioe) {

								ioe.printStackTrace();

								throw ioe;

							} catch (PropertyNotFoundException pnfe) {

								pnfe.printStackTrace();

								throw pnfe;

							} catch (BaseException be) {

								be.printStackTrace();

								throw be;

							}

						}

					} // end if()

				// ORE map

			        if (!dataIds.isEmpty()) {

			            // generate the ORE map for this datapackage

			            Identifier resourceMapId = new Identifier();

			            resourceMapId.setValue("resourceMap_" + sysMeta.getIdentifier().getValue());

			            idMap.put(sysMeta.getIdentifier(), dataIds);

			            ResourceMap rm = ResourceMapFactory.getInstance().createResourceMap(resourceMapId, idMap);

			            String resourceMapXML = ResourceMapFactory.getInstance().serializeResourceMap(rm);

			            // copy most of the same system metadata as the packaging metadata

			            SystemMetadata resourceMapSysMeta = new SystemMetadata();

			            BeanUtils.copyProperties(resourceMapXML, sysMeta);

			            resourceMapSysMeta.setIdentifier(resourceMapId);

			            Checksum checksum = ChecksumUtil.checksum(new BufferedInputStream(IOUtils.toInputStream(resourceMapXML, MetaCatServlet.DEFAULT_ENCODING)), "MD5");

						resourceMapSysMeta.setChecksum(checksum);

			            ObjectFormatIdentifier formatId = ObjectFormatCache.getInstance().getFormat("http://www.openarchives.org/ore/terms").getFormatId();

						resourceMapSysMeta.setFormatId(formatId);

			            // TODO: other fields to update?

						// save it locally

						MNodeService.getInstance(null).create(

								null,

								resourceMapId,

								IOUtils.toInputStream(resourceMapXML, MetaCatServlet.DEFAULT_ENCODING),

								resourceMapSysMeta);

			        }

				}

			} catch (ParserConfigurationException pce) {

			} catch (SAXException saxe) {

			} catch (XPathExpressionException xpee) {

			} catch (Exception e) {

			} // end try()

		} // end if()

		// create the checksum

		inputStream = MetacatHandler.read(localId);

		String algorithm = "MD5";

		Checksum checksum = ChecksumUtil.checksum(inputStream, algorithm);

		sysMeta.setChecksum(checksum);

		// set the size

		inputStream = MetacatHandler.read(localId);

		String sizeStr = new Long(sizeOfStream(inputStream)).toString();

		sysMeta.setSize(new BigInteger(sizeStr));

		// submitter

		Subject owner = new Subject();

		String createdDateString = docInfo.get("date_created");

		String updatedDateString = docInfo.get("date_updated");

		Date createdDate = DateTimeMarshaller.deserializeDateToUTC(createdDateString);

		Date updatedDate = DateTimeMarshaller.deserializeDateToUTC(updatedDateString);

		sysMeta.setDateUploaded(createdDate);

		sysMeta.setDateSysMetadataModified(updatedDate);

		// set the revision history

		String docidWithoutRev = accNum.getDocid();

		Identifier obsoletedBy = new Identifier();

		Identifier obsoletes = new Identifier();

		Vector<Integer> revisions = DBUtil.getRevListFromRevisionTable(docidWithoutRev);

		for (int existingRev: revisions) {

			// use the docid+rev as the guid

			String existingPid = docidWithoutRev + "." + existingRev;

			if (existingRev < rev) {

				// it's the old docid, until it's not

			if (existingRev > rev) {

				// it's the newer docid

				obsoletedBy.setValue(existingPid);

				// only want the version just after it

				break;

			}

		sysMeta.setObsoletedBy(obsoletedBy);

		sysMeta.setObsoletes(obsoletes);

		// TODO: access control?

		// I believe the access control will be fine since we use the same storage mechanism for Metacat/D1

		// authoritative node

		nr.setValue(PropertyService.getProperty("dataone.memberNodeId"));

		sysMeta.setOriginMemberNode(nr);

		sysMeta.setAuthoritativeMemberNode(nr);

		return sysMeta;

	}

	 * of MetacatHandler and into a utility when stream i/o in Metacat is

	 * evaluated.

	 *

	 * @param is The InputStream of bytes

	 *

	 * @return size The size in bytes of the input stream as a long

	 *

	 * @throws IOException

	 */

	private static long sizeOfStream(InputStream is) throws IOException {

		long size = 0;

		byte[] b = new byte[1024];

		int numread = is.read(b, 0, 1024);

		while (numread != -1) {

			size += numread;

			numread = is.read(b, 0, 1024);

		}

		return size;

	}