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5211
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jones
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/**
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* '$RCSfile$'
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5805
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berkley
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* Copyright: 2011 Regents of the University of California and the
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5211
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jones
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* National Center for Ecological Analysis and Synthesis
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*
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* '$Author: Serhan AKIN $'
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* '$Date: 2009-06-13 15:28:13 +0300 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.restservice;
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6130
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leinfelder
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import java.io.File;
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6269
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leinfelder
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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6130
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leinfelder
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.text.DateFormat;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Enumeration;
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import java.util.Hashtable;
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6269
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leinfelder
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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6130
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leinfelder
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import java.util.TimeZone;
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import java.util.Timer;
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5211
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jones
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import javax.servlet.ServletContext;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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6067
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rnahf
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6269
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leinfelder
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import org.apache.commons.fileupload.FileUploadException;
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5299
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jones
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import org.apache.commons.io.IOUtils;
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5211
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jones
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import org.apache.log4j.Logger;
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6244
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leinfelder
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import org.dataone.client.auth.CertificateManager;
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6269
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leinfelder
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import org.dataone.mimemultipart.MultipartRequest;
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import org.dataone.mimemultipart.MultipartRequestResolver;
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5299
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jones
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import org.dataone.service.exceptions.BaseException;
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6269
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leinfelder
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import org.dataone.service.exceptions.InvalidRequest;
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import org.dataone.service.exceptions.ServiceFailure;
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6130
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leinfelder
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import org.dataone.service.types.Session;
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6269
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leinfelder
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import org.dataone.service.types.SystemMetadata;
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5851
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berkley
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import org.dataone.service.types.util.ServiceTypeUtil;
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5320
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jones
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import org.jibx.runtime.JiBXException;
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5211
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jones
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import edu.ucsb.nceas.metacat.MetacatHandler;
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5637
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berkley
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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5211
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jones
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/**
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*
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6268
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leinfelder
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* Base class for handling D1 REST calls in Metacat
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5211
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jones
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*
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6268
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leinfelder
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* @author leinfelder
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5211
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jones
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*/
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6267
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leinfelder
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public class D1ResourceHandler {
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5211
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jones
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/**HTTP Verb GET*/
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public static final byte GET = 1;
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/**HTTP Verb POST*/
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public static final byte POST = 2;
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/**HTTP Verb PUT*/
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public static final byte PUT = 3;
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/**HTTP Verb DELETE*/
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public static final byte DELETE = 4;
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5651
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berkley
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/**HTTP Verb HEAD*/
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public static final byte HEAD = 5;
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5211
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jones
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/*
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* API Resources
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*/
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6271
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leinfelder
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protected static final String RESOURCE_BASE_URL = "d1";
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6247
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leinfelder
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protected static final String RESOURCE_OBJECTS = "object";
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protected static final String RESOURCE_META = "meta";
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protected static final String RESOURCE_LOG = "log";
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protected static final String RESOURCE_CHECKSUM = "checksum";
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6249
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leinfelder
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protected static final String RESOURCE_IS_AUTHORIZED = "isAuthorized";
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protected static final String RESOURCE_ACCESS_RULES = "accessRules";
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5211
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jones
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/*
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* API Functions used as URL parameters
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*/
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6247
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leinfelder
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protected static final String FUNCTION_NAME_INSERT = "insert";
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protected static final String FUNCTION_NAME_UPDATE = "update";
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jones
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6247
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leinfelder
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protected static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
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5414
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berkley
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6247
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leinfelder
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protected ServletContext servletContext;
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protected Logger logMetacat;
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protected MetacatHandler handler;
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protected HttpServletRequest request;
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protected HttpServletResponse response;
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5211
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jones
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6247
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leinfelder
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protected Hashtable<String, String[]> params;
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6269
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leinfelder
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protected Map<String, List<String>> multipartparams;
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6244
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leinfelder
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// D1 certificate-based authentication
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6247
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leinfelder
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protected Session session;
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5211
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jones
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/**Initializes new instance by setting servlet context,request and response*/
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6267
|
leinfelder
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public D1ResourceHandler(ServletContext servletContext,
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5211
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jones
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HttpServletRequest request, HttpServletResponse response) {
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this.servletContext = servletContext;
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this.request = request;
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this.response = response;
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}
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/**
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6268
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leinfelder
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* This function is called from REST API servlet and handles each request
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5211
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jones
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*
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* @param httpVerb (GET, POST, PUT or DELETE)
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*/
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public void handle(byte httpVerb) {
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6267
|
leinfelder
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logMetacat = Logger.getLogger(D1ResourceHandler.class);
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5211
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jones
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try {
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133 |
6268
|
leinfelder
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6244
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leinfelder
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// load session from certificate in request
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session = CertificateManager.getInstance().getSession(request);
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5211
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jones
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6268
|
leinfelder
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// initialize the parameters
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params = new Hashtable<String, String[]>();
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initParams();
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140 |
5211
|
jones
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141 |
6268
|
leinfelder
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// create the handler for interacting with Metacat
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Timer timer = new Timer();
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handler = new MetacatHandler(timer);
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5211
|
jones
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} catch (Exception e) {
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146 |
6268
|
leinfelder
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// TODO: more D1 structure when failing here
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response.setStatus(400);
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printError("Incorrect resource!", response);
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logMetacat.error(e.getClass() + ": " + e.getMessage(), e);
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5211
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jones
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}
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}
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152 |
5374
|
berkley
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153 |
6269
|
leinfelder
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protected SystemMetadata collectSystemMetadata() throws IOException, FileUploadException, ServiceFailure, InvalidRequest, JiBXException {
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154 |
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// Read the incoming data from its Mime Multipart encoding
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logMetacat.debug("Disassembling MIME multipart form");
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InputStream sysmeta = null;
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158 |
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159 |
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// handle MMP inputs
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File tmpDir = getTempDirectory();
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logMetacat.debug("temp dir: " + tmpDir.getAbsolutePath());
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162 |
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MultipartRequestResolver mrr =
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163 |
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new MultipartRequestResolver(tmpDir.getAbsolutePath(), 1000000000, 0);
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164 |
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MultipartRequest mr = null;
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165 |
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try {
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166 |
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mr = mrr.resolveMultipart(request);
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167 |
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} catch (Exception e) {
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168 |
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throw new ServiceFailure("1202",
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169 |
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"Could not resolve multipart: " + e.getMessage());
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170 |
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}
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171 |
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logMetacat.debug("resolved multipart request");
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172 |
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Map<String, File> files = mr.getMultipartFiles();
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173 |
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if (files == null) {
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174 |
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throw new ServiceFailure("1202",
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175 |
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"register meta must have multipart file with name 'sysmeta'");
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176 |
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}
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177 |
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logMetacat.debug("got multipart files");
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178 |
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179 |
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if (files.keySet() == null) {
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180 |
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logMetacat.error("No file keys in MMP request.");
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181 |
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throw new ServiceFailure(
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182 |
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"1202",
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183 |
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"No file keys found in MMP. "
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184 |
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+ "register meta must have multipart file with name 'sysmeta'");
|
185 |
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}
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186 |
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187 |
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// for logging purposes, dump out the key-value pairs that
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188 |
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// constitute the request
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189 |
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// 3 types exist: request params, multipart params, and
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190 |
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// multipart files
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191 |
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Iterator it = files.keySet().iterator();
|
192 |
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logMetacat.debug("iterating through request parts: " + it);
|
193 |
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while (it.hasNext()) {
|
194 |
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String key = (String) it.next();
|
195 |
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logMetacat.debug("files key: " + key);
|
196 |
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logMetacat.debug("files value: " + files.get(key));
|
197 |
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}
|
198 |
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|
199 |
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multipartparams = mr.getMultipartParameters();
|
200 |
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it = multipartparams.keySet().iterator();
|
201 |
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while (it.hasNext()) {
|
202 |
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String key = (String) it.next();
|
203 |
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logMetacat.debug("multipartparams key: " + key);
|
204 |
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logMetacat.debug("multipartparams value: " + multipartparams.get(key));
|
205 |
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}
|
206 |
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|
207 |
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it = params.keySet().iterator();
|
208 |
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while (it.hasNext()) {
|
209 |
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String key = (String) it.next();
|
210 |
|
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logMetacat.debug("param key: " + key);
|
211 |
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logMetacat.debug("param value: " + params.get(key));
|
212 |
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}
|
213 |
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logMetacat.debug("done iterating the request...");
|
214 |
|
|
|
215 |
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File smFile = files.get("sysmeta");
|
216 |
|
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if (smFile == null) {
|
217 |
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throw new InvalidRequest("1102",
|
218 |
|
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"Missing the required file-part 'sysmeta' from the multipart request.");
|
219 |
|
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}
|
220 |
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logMetacat.debug("smFile: " + smFile.getAbsolutePath());
|
221 |
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sysmeta = new FileInputStream(smFile);
|
222 |
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|
223 |
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logMetacat.debug("Commence creation...");
|
224 |
|
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SystemMetadata systemMetadata = (SystemMetadata) deserializeServiceType(SystemMetadata.class, sysmeta);
|
225 |
|
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return systemMetadata;
|
226 |
|
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}
|
227 |
|
|
|
228 |
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protected Map<String, File> collectMultipartFiles() throws ServiceFailure, InvalidRequest {
|
229 |
|
|
|
230 |
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// Read the incoming data from its Mime Multipart encoding
|
231 |
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logMetacat.debug("Disassembling MIME multipart form");
|
232 |
|
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InputStream object = null;
|
233 |
|
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InputStream sysmeta = null;
|
234 |
|
|
|
235 |
|
|
|
236 |
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// handle MMP inputs
|
237 |
|
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File tmpDir = getTempDirectory();
|
238 |
6272
|
leinfelder
|
logMetacat.debug("temp dir: " + tmpDir.getAbsolutePath());
|
239 |
6269
|
leinfelder
|
MultipartRequestResolver mrr =
|
240 |
|
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new MultipartRequestResolver(tmpDir.getAbsolutePath(), 1000000000, 0);
|
241 |
|
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MultipartRequest mr = null;
|
242 |
|
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try {
|
243 |
|
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mr = mrr.resolveMultipart(request);
|
244 |
|
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} catch (Exception e) {
|
245 |
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throw new ServiceFailure("1202",
|
246 |
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"Could not resolve multipart files: " + e.getMessage());
|
247 |
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}
|
248 |
6272
|
leinfelder
|
logMetacat.debug("resolved multipart request");
|
249 |
6269
|
leinfelder
|
Map<String, File> files = mr.getMultipartFiles();
|
250 |
|
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if (files == null) {
|
251 |
|
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throw new ServiceFailure("1202", "create/update must have multipart files with names 'object' and 'sysmeta'");
|
252 |
|
|
}
|
253 |
6272
|
leinfelder
|
logMetacat.debug("got multipart files");
|
254 |
6269
|
leinfelder
|
|
255 |
|
|
if (files.keySet() == null) {
|
256 |
6272
|
leinfelder
|
logMetacat.error("No file keys in MMP request.");
|
257 |
6269
|
leinfelder
|
throw new ServiceFailure("1202", "No file keys found in MMP. " +
|
258 |
|
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"create/update must have multipart files with names 'object' and 'sysmeta'");
|
259 |
|
|
}
|
260 |
|
|
|
261 |
|
|
// for logging purposes, dump out the key-value pairs that constitute the request
|
262 |
|
|
// 3 types exist: request params, multipart params, and multipart files
|
263 |
|
|
Iterator it = files.keySet().iterator();
|
264 |
6272
|
leinfelder
|
logMetacat.debug("iterating through files");
|
265 |
6269
|
leinfelder
|
while (it.hasNext()) {
|
266 |
|
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String key = (String)it.next();
|
267 |
6272
|
leinfelder
|
logMetacat.debug("files key: " + key);
|
268 |
|
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logMetacat.debug("files value: " + files.get(key));
|
269 |
6269
|
leinfelder
|
}
|
270 |
|
|
|
271 |
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multipartparams = mr.getMultipartParameters();
|
272 |
|
|
it = multipartparams.keySet().iterator();
|
273 |
6272
|
leinfelder
|
logMetacat.debug("iterating through multipartparams");
|
274 |
6269
|
leinfelder
|
while (it.hasNext()) {
|
275 |
|
|
String key = (String)it.next();
|
276 |
6272
|
leinfelder
|
logMetacat.debug("multipartparams key: " + key);
|
277 |
|
|
logMetacat.debug("multipartparams value: " + multipartparams.get(key));
|
278 |
6269
|
leinfelder
|
}
|
279 |
|
|
|
280 |
|
|
it = params.keySet().iterator();
|
281 |
6272
|
leinfelder
|
logMetacat.debug("iterating through params");
|
282 |
6269
|
leinfelder
|
while (it.hasNext()) {
|
283 |
|
|
String key = (String)it.next();
|
284 |
6272
|
leinfelder
|
logMetacat.debug("param key: " + key);
|
285 |
|
|
logMetacat.debug("param value: " + params.get(key));
|
286 |
6269
|
leinfelder
|
}
|
287 |
6272
|
leinfelder
|
logMetacat.debug("done iterating the request...");
|
288 |
6269
|
leinfelder
|
|
289 |
|
|
File smFile = files.get("sysmeta");
|
290 |
|
|
if (smFile == null) {
|
291 |
|
|
throw new InvalidRequest("1102", "Missing the required file-part 'sysmeta' from the multipart request.");
|
292 |
|
|
}
|
293 |
6272
|
leinfelder
|
logMetacat.debug("smFile: " + smFile.getAbsolutePath());
|
294 |
6269
|
leinfelder
|
File objFile = files.get("object");
|
295 |
|
|
if (objFile == null) {
|
296 |
|
|
throw new InvalidRequest("1102", "Missing the required file-part 'object' from the multipart request.");
|
297 |
|
|
}
|
298 |
6272
|
leinfelder
|
logMetacat.debug("objectfile: " + objFile.getAbsolutePath());
|
299 |
6269
|
leinfelder
|
|
300 |
|
|
return files;
|
301 |
|
|
}
|
302 |
|
|
|
303 |
6140
|
cjones
|
/**
|
304 |
5374
|
berkley
|
* copies request parameters to a hashtable which is given as argument to native metacathandler functions
|
305 |
|
|
*/
|
306 |
6247
|
leinfelder
|
protected void initParams() {
|
307 |
5211
|
jones
|
|
308 |
5374
|
berkley
|
String name = null;
|
309 |
|
|
String[] value = null;
|
310 |
|
|
Enumeration paramlist = request.getParameterNames();
|
311 |
|
|
while (paramlist.hasMoreElements()) {
|
312 |
|
|
name = (String) paramlist.nextElement();
|
313 |
|
|
value = request.getParameterValues(name);
|
314 |
|
|
params.put(name, value);
|
315 |
|
|
}
|
316 |
|
|
}
|
317 |
|
|
|
318 |
5211
|
jones
|
/**
|
319 |
5428
|
berkley
|
* parse a date and return it in GMT if it ends with a 'Z'
|
320 |
|
|
* @param date
|
321 |
|
|
* @return
|
322 |
|
|
* @throws ParseException
|
323 |
|
|
*/
|
324 |
6247
|
leinfelder
|
protected Date parseDateAndConvertToGMT(String date) throws ParseException
|
325 |
5428
|
berkley
|
{
|
326 |
5429
|
berkley
|
try
|
327 |
|
|
{ //the format we want
|
328 |
|
|
return dateFormat.parse(date);
|
329 |
|
|
}
|
330 |
|
|
catch(java.text.ParseException pe)
|
331 |
|
|
{ //try another legacy format
|
332 |
|
|
DateFormat dateFormat2 = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'");
|
333 |
|
|
dateFormat2.setTimeZone(TimeZone.getTimeZone("GMT-0"));
|
334 |
|
|
return dateFormat2.parse(date);
|
335 |
|
|
}
|
336 |
5428
|
berkley
|
}
|
337 |
5211
|
jones
|
|
338 |
|
|
/**
|
339 |
5390
|
berkley
|
* serialize an object of type to out
|
340 |
|
|
* @param type the class of the object to serialize (i.e. SystemMetadata.class)
|
341 |
|
|
* @param object the object to serialize
|
342 |
|
|
* @param out the stream to serialize it to
|
343 |
|
|
* @throws JiBXException
|
344 |
|
|
*/
|
345 |
6247
|
leinfelder
|
protected void serializeServiceType(Class type, Object object, OutputStream out)
|
346 |
6268
|
leinfelder
|
throws JiBXException {
|
347 |
5851
|
berkley
|
ServiceTypeUtil.serializeServiceType(type, object, out);
|
348 |
5390
|
berkley
|
}
|
349 |
|
|
|
350 |
|
|
/**
|
351 |
|
|
* deserialize an object of type from is
|
352 |
|
|
* @param type the class of the object to serialize (i.e. SystemMetadata.class)
|
353 |
|
|
* @param is the stream to deserialize from
|
354 |
|
|
* @throws JiBXException
|
355 |
|
|
*/
|
356 |
6252
|
leinfelder
|
protected Object deserializeServiceType(Class type, InputStream is)
|
357 |
6268
|
leinfelder
|
throws JiBXException {
|
358 |
5851
|
berkley
|
return ServiceTypeUtil.deserializeServiceType(type, is);
|
359 |
5390
|
berkley
|
}
|
360 |
6268
|
leinfelder
|
|
361 |
5390
|
berkley
|
/**
|
362 |
5808
|
berkley
|
* locate the boundary marker for an MMP
|
363 |
5462
|
berkley
|
* @param is
|
364 |
|
|
* @return
|
365 |
5808
|
berkley
|
* @throws IOException
|
366 |
5462
|
berkley
|
*/
|
367 |
5639
|
berkley
|
protected static String[] findBoundaryString(InputStream is)
|
368 |
6268
|
leinfelder
|
throws IOException {
|
369 |
5639
|
berkley
|
String[] endResult = new String[2];
|
370 |
5637
|
berkley
|
String boundary = "";
|
371 |
5639
|
berkley
|
String searchString = "boundary=";
|
372 |
5637
|
berkley
|
byte[] b = new byte[1024];
|
373 |
5639
|
berkley
|
int numbytes = is.read(b, 0, 1024);
|
374 |
5826
|
berkley
|
|
375 |
5639
|
berkley
|
while(numbytes != -1)
|
376 |
5636
|
berkley
|
{
|
377 |
5639
|
berkley
|
String s = new String(b, 0, numbytes);
|
378 |
5826
|
berkley
|
int searchStringIndex = s.indexOf(searchString);
|
379 |
5639
|
berkley
|
|
380 |
|
|
if(s.indexOf("\"", searchStringIndex + searchString.length() + 1) == -1)
|
381 |
|
|
{ //the end of the boundary is in the next byte array
|
382 |
|
|
boundary = s.substring(searchStringIndex + searchString.length() + 1, s.length());
|
383 |
|
|
}
|
384 |
|
|
else if(!boundary.startsWith("--"))
|
385 |
|
|
{ //we can read the whole boundary from this byte array
|
386 |
|
|
boundary = s.substring(searchStringIndex + searchString.length() + 1,
|
387 |
|
|
s.indexOf("\"", searchStringIndex + searchString.length() + 1));
|
388 |
|
|
boundary = "--" + boundary;
|
389 |
|
|
endResult[0] = boundary;
|
390 |
|
|
endResult[1] = s.substring(s.indexOf("\"", searchStringIndex + searchString.length() + 1) + 1,
|
391 |
|
|
s.length());
|
392 |
|
|
break;
|
393 |
|
|
}
|
394 |
|
|
else
|
395 |
|
|
{ //we're now reading the 2nd byte array to get the rest of the boundary
|
396 |
|
|
searchString = "\"";
|
397 |
|
|
searchStringIndex = s.indexOf(searchString);
|
398 |
|
|
boundary += s.substring(0, searchStringIndex);
|
399 |
|
|
boundary = "--" + boundary;
|
400 |
|
|
endResult[0] = boundary;
|
401 |
|
|
endResult[1] = s.substring(s.indexOf("\"", searchStringIndex + searchString.length() + 1) + 1,
|
402 |
|
|
s.length());
|
403 |
|
|
break;
|
404 |
|
|
}
|
405 |
5637
|
berkley
|
}
|
406 |
5639
|
berkley
|
return endResult;
|
407 |
|
|
}
|
408 |
|
|
|
409 |
5808
|
berkley
|
/**
|
410 |
5838
|
berkley
|
* return the directory where temp files are stored
|
411 |
|
|
* @return
|
412 |
|
|
*/
|
413 |
6248
|
leinfelder
|
protected static File getTempDirectory()
|
414 |
5838
|
berkley
|
{
|
415 |
|
|
File tmpDir = null;
|
416 |
6267
|
leinfelder
|
Logger logMetacat = Logger.getLogger(D1ResourceHandler.class);
|
417 |
6268
|
leinfelder
|
try {
|
418 |
5639
|
berkley
|
tmpDir = new File(PropertyService.getProperty("application.tempDir"));
|
419 |
|
|
}
|
420 |
6268
|
leinfelder
|
catch(PropertyNotFoundException pnfe) {
|
421 |
6267
|
leinfelder
|
logMetacat.error("D1ResourceHandler.writeMMPPartstoFiles: " +
|
422 |
5639
|
berkley
|
"application.tmpDir not found. Using /tmp instead.");
|
423 |
|
|
tmpDir = new File("/tmp");
|
424 |
|
|
}
|
425 |
5838
|
berkley
|
return tmpDir;
|
426 |
5639
|
berkley
|
}
|
427 |
|
|
|
428 |
5637
|
berkley
|
/**
|
429 |
5211
|
jones
|
* Prints xml response
|
430 |
|
|
* @param message Message to be displayed
|
431 |
|
|
* @param response Servlet response that xml message will be printed
|
432 |
|
|
* */
|
433 |
6247
|
leinfelder
|
protected void printError(String message, HttpServletResponse response) {
|
434 |
5211
|
jones
|
try {
|
435 |
6267
|
leinfelder
|
logMetacat.error("D1ResourceHandler: Printing error to servlet response: " + message);
|
436 |
5211
|
jones
|
PrintWriter out = response.getWriter();
|
437 |
|
|
response.setContentType("text/xml");
|
438 |
|
|
out.println("<?xml version=\"1.0\"?>");
|
439 |
|
|
out.println("<error>");
|
440 |
|
|
out.println(message);
|
441 |
|
|
out.println("</error>");
|
442 |
|
|
out.close();
|
443 |
|
|
} catch (IOException e) {
|
444 |
|
|
e.printStackTrace();
|
445 |
|
|
}
|
446 |
|
|
}
|
447 |
5370
|
berkley
|
|
448 |
5692
|
berkley
|
/**
|
449 |
|
|
* serialize a D1 exception using jibx
|
450 |
|
|
* @param e
|
451 |
|
|
* @param out
|
452 |
|
|
*/
|
453 |
6247
|
leinfelder
|
protected void serializeException(BaseException e, OutputStream out) {
|
454 |
5319
|
jones
|
// TODO: Use content negotiation to determine which return format to use
|
455 |
|
|
response.setContentType("text/xml");
|
456 |
|
|
response.setStatus(e.getCode());
|
457 |
5512
|
berkley
|
|
458 |
6267
|
leinfelder
|
logMetacat.error("D1ResourceHandler: Serializing exception with code " + e.getCode() + ": " + e.getMessage());
|
459 |
5512
|
berkley
|
e.printStackTrace();
|
460 |
|
|
|
461 |
5319
|
jones
|
try {
|
462 |
|
|
IOUtils.write(e.serialize(BaseException.FMT_XML), out);
|
463 |
|
|
} catch (IOException e1) {
|
464 |
|
|
logMetacat.error("Error writing exception to stream. "
|
465 |
|
|
+ e1.getMessage());
|
466 |
|
|
}
|
467 |
|
|
}
|
468 |
|
|
|
469 |
5211
|
jones
|
}
|