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https://github.com/Alfresco/alfresco-community-repo.git
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- Changed generation of unique identifier, no longer appears as a field on the create screens, instead gets generated after the node is persisted, the identifier is then generated using the same algorithm as used for records i.e. year-<pad0><node-dbid>. The idenifier still appears on the edit screen so can be changed if desired.
- Moved the StreamArchive webscript implementation to remote API project so it can be re-used by other non RM webscripts - Added skeleton for transfer REST API git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@15687 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Gavin Cornwell
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/*
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* Copyright (C) 2005-2009 Alfresco Software Limited.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* As a special exception to the terms and conditions of version 2.0 of
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* the GPL, you may redistribute this Program in connection with Free/Libre
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* and Open Source Software ("FLOSS") applications as described in Alfresco's
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* FLOSS exception. You should have recieved a copy of the text describing
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* the FLOSS exception, and it is also available here:
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* http://www.alfresco.com/legal/licensing
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*/
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package org.alfresco.repo.web.scripts.content;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.util.List;
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import javax.servlet.http.HttpServletResponse;
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import org.alfresco.repo.exporter.ACPExportPackageHandler;
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import org.alfresco.repo.web.scripts.content.StreamContent;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.view.ExporterCrawlerParameters;
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import org.alfresco.service.cmr.view.ExporterService;
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import org.alfresco.service.cmr.view.Location;
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import org.alfresco.util.GUID;
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import org.alfresco.util.TempFileProvider;
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import org.alfresco.web.scripts.Status;
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import org.alfresco.web.scripts.WebScriptException;
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import org.alfresco.web.scripts.WebScriptRequest;
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import org.alfresco.web.scripts.WebScriptResponse;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import org.json.JSONTokener;
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/**
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* Base class for Java backed webscripts that wish to stream the contents
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* of an archive back to the caller.
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*
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* @author Gavin Cornwell
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*/
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public class StreamArchive extends StreamContent
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{
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/** Logger */
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private static Log logger = LogFactory.getLog(StreamArchive.class);
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protected static final String TEMP_FILE_PREFIX = "export_";
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protected static final String PARAM_NODE_REFS = "nodeRefs";
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protected ExporterService exporterService;
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/**
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* Sets the ExporterService to use
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*
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* @param exporterService The ExporterService
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*/
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public void setExporterService(ExporterService exporterService)
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{
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this.exporterService = exporterService;
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}
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/**
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* @see org.alfresco.web.scripts.WebScript#execute(org.alfresco.web.scripts.WebScriptRequest, org.alfresco.web.scripts.WebScriptResponse)
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*/
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public void execute(WebScriptRequest req, WebScriptResponse res) throws IOException
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{
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JSONObject json = null;
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File tempArchiveFile = null;
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try
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{
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// get JSON body
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json = new JSONObject(new JSONTokener(req.getContent().getContent()));
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// check the list of NodeRefs is present
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if (!json.has(PARAM_NODE_REFS))
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{
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throw new WebScriptException(Status.STATUS_BAD_REQUEST,
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"Mandatory 'nodeRefs' parameter was not provided in request body");
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}
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JSONArray jsonArray = json.getJSONArray(PARAM_NODE_REFS);
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if (jsonArray.length() != 0)
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{
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// build the list of NodeRefs
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NodeRef[] nodeRefs = new NodeRef[jsonArray.length()];
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for (int i = 0; i < jsonArray.length(); i++)
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{
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NodeRef nodeRef = new NodeRef(jsonArray.getString(i));
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nodeRefs[i] = nodeRef;
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}
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// create an archive of the nodes
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tempArchiveFile = createArchive(nodeRefs);
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// stream the archive back to the client as an attachment (forcing save as)
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streamContent(req, res, tempArchiveFile, true);
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}
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}
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catch (IOException iox)
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{
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throw new WebScriptException(Status.STATUS_BAD_REQUEST,
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"Could not read content from req.", iox);
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}
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catch (JSONException je)
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{
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throw new WebScriptException(Status.STATUS_BAD_REQUEST,
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"Could not parse JSON from req.", je);
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}
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finally
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{
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// try and delete the temporary file
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if (tempArchiveFile != null)
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{
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tempArchiveFile.delete();
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if (logger.isDebugEnabled())
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logger.debug("Deleted temporary archive: " + tempArchiveFile.getAbsolutePath());
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}
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}
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}
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/**
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* Returns an Alfresco archive file containing the nodes represented
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* by the given list of NodeRefs.
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*
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* @param nodeRefs List of nodes to create archive from
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* @return File object representing the created archive
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*/
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protected File createArchive(List<NodeRef> nodeRefs)
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{
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NodeRef[] nodeRefArr = new NodeRef[nodeRefs.size()];
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return createArchive(nodeRefs.toArray(nodeRefArr));
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}
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/**
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* Returns an Alfresco archive file containing the nodes represented
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* by the given list of NodeRefs.
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*
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* @param nodeRefs Array of nodes to create archive from
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* @return File object representing the created archive
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*/
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protected File createArchive(NodeRef[] nodeRefs)
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{
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try
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{
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if (logger.isDebugEnabled())
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{
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StringBuilder builder = new StringBuilder("Creating archive for ");
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builder.append(nodeRefs.length);
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builder.append(" nodes: ");
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for (int idx = 0; idx < nodeRefs.length; idx++)
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{
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if (idx != 0) builder.append(", ");
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builder.append(nodeRefs[idx]);
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}
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logger.debug(builder.toString());
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}
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// generate temp file and folder name
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File dataFile = new File(GUID.generate());
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File contentDir = new File(GUID.generate());
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// setup export package handler
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File acpFile = TempFileProvider.createTempFile(TEMP_FILE_PREFIX, "." + ACPExportPackageHandler.ACP_EXTENSION);
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ACPExportPackageHandler handler = new ACPExportPackageHandler(new FileOutputStream(acpFile),
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dataFile, contentDir, this.mimetypeService);
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// setup parameters for export
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ExporterCrawlerParameters params = new ExporterCrawlerParameters();
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params.setCrawlSelf(true);
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params.setCrawlChildNodes(true);
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params.setExportFrom(new Location(nodeRefs));
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// perform the actual export
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this.exporterService.exportView(handler, params, null);
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if (logger.isDebugEnabled())
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logger.debug("Created temporary archive: " + acpFile.getAbsolutePath());
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return acpFile;
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}
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catch (FileNotFoundException fnfe)
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{
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throw new WebScriptException(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
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"Failed to create archive", fnfe);
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}
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}
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}
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