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Re-work after code review
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Adrian Damian authored and Adrian Damian committed Feb 6, 2024
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/*
************************************************************************
******************* CANADIAN ASTRONOMY DATA CENTRE *******************
************** CENTRE CANADIEN DE DONNÉES ASTRONOMIQUES **************
*
* (c) 2023. (c) 2023.
* Government of Canada Gouvernement du Canada
* National Research Council Conseil national de recherches
* Ottawa, Canada, K1A 0R6 Ottawa, Canada, K1A 0R6
* All rights reserved Tous droits réservés
*
* NRC disclaims any warranties, Le CNRC dénie toute garantie
* expressed, implied, or énoncée, implicite ou légale,
* statutory, of any kind with de quelque nature que ce
* respect to the software, soit, concernant le logiciel,
* including without limitation y compris sans restriction
* any warranty of merchantability toute garantie de valeur
* or fitness for a particular marchande ou de pertinence
* purpose. NRC shall not be pour un usage particulier.
* liable in any event for any Le CNRC ne pourra en aucun cas
* damages, whether direct or être tenu responsable de tout
* indirect, special or general, dommage, direct ou indirect,
* consequential or incidental, particulier ou général,
* arising from the use of the accessoire ou fortuit, résultant
* software. Neither the name de l'utilisation du logiciel. Ni
* of the National Research le nom du Conseil National de
* Council of Canada nor the Recherches du Canada ni les noms
* names of its contributors may de ses participants ne peuvent
* be used to endorse or promote être utilisés pour approuver ou
* products derived from this promouvoir les produits dérivés
* software without specific prior de ce logiciel sans autorisation
* written permission. préalable et particulière
* par écrit.
*
* This file is part of the Ce fichier fait partie du projet
* OpenCADC project. OpenCADC.
*
* OpenCADC is free software: OpenCADC est un logiciel libre ;
* you can redistribute it and/or vous pouvez le redistribuer ou le
* modify it under the terms of modifier suivant les termes de
* the GNU Affero General Public la “GNU Affero General Public
* License as published by the License” telle que publiée
* Free Software Foundation, par la Free Software Foundation
* either version 3 of the : soit la version 3 de cette
* License, or (at your option) licence, soit (à votre gré)
* any later version. toute version ultérieure.
*
* OpenCADC is distributed in the OpenCADC est distribué
* hope that it will be useful, dans l’espoir qu’il vous
* but WITHOUT ANY WARRANTY; sera utile, mais SANS AUCUNE
* without even the implied GARANTIE : sans même la garantie
* warranty of MERCHANTABILITY implicite de COMMERCIALISABILITÉ
* or FITNESS FOR A PARTICULAR ni d’ADÉQUATION À UN OBJECTIF
* PURPOSE. See the GNU Affero PARTICULIER. Consultez la Licence
* General Public License for Générale Publique GNU Affero
* more details. pour plus de détails.
*
* You should have received Vous devriez avoir reçu une
* a copy of the GNU Affero copie de la Licence Générale
* General Public License along Publique GNU Affero avec
* with OpenCADC. If not, see OpenCADC ; si ce n’est
* <http://www.gnu.org/licenses/>. pas le cas, consultez :
* <http://www.gnu.org/licenses/>.
*
************************************************************************
*/

package org.opencadc.vospace.server.actions;

import ca.nrc.cadc.rest.InlineContentHandler;
import ca.nrc.cadc.rest.RestAction;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.ParseException;
import java.util.Date;
import javax.naming.Context;
import javax.naming.InitialContext;
import org.apache.log4j.Logger;
import org.opencadc.vospace.DataNode;
import org.opencadc.vospace.NodeProperty;
import org.opencadc.vospace.VOS;
import org.opencadc.vospace.VOSURI;
import org.opencadc.vospace.io.NodeWriter;
import org.opencadc.vospace.server.LocalServiceURI;
import org.opencadc.vospace.server.NodePersistence;
import org.opencadc.vospace.server.Utils;
import org.opencadc.vospace.server.auth.VOSpaceAuthorizer;

/**
* Common functionality of an action on files end point.
* @author adriand
*/
public abstract class BaseFileAction extends RestAction {
protected static Logger log = Logger.getLogger(BaseFileAction.class);

// some subclasses may need to determine hostname, request path, etc
protected VOSpaceAuthorizer voSpaceAuthorizer;
protected NodePersistence nodePersistence;
protected LocalServiceURI localServiceURI;

protected BaseFileAction() {
super();
}

@Override
public void initAction() throws Exception {
String jndiNodePersistence = super.appName + "-" + NodePersistence.class.getName();
try {
Context ctx = new InitialContext();
this.nodePersistence = ((NodePersistence) ctx.lookup(jndiNodePersistence));
this.voSpaceAuthorizer = new VOSpaceAuthorizer(nodePersistence);
localServiceURI = new LocalServiceURI(nodePersistence.getResourceID());
} catch (Exception oops) {
throw new RuntimeException("BUG: NodePersistence implementation not found with JNDI key " + jndiNodePersistence, oops);
}

checkReadable();
}

protected void setResponseHeaders(DataNode node) {
syncOutput.setHeader("Content-Disposition", "inline; filename=\"" + node.getName() + "\"");
for (NodeProperty prop : node.getProperties()) {
if (prop.getKey().equals(VOS.PROPERTY_URI_DATE)) {
try {
Date lastMod = NodeWriter.getDateFormat().parse(prop.getValue());
syncOutput.setLastModified(lastMod);

} catch (ParseException e) {
log.warn("BUG: Unexpected date format " + prop.getValue() + " for " + Utils.getPath(node));
}
}
if (prop.getKey().equals(VOS.PROPERTY_URI_CONTENTLENGTH)) {
syncOutput.setHeader("Content-Length", prop.getValue());
}
if (prop.getKey().equals(VOS.PROPERTY_URI_CONTENTENCODING)) {
syncOutput.setHeader("Content-Encoding", prop.getValue());
}
if (prop.getKey().equals(VOS.PROPERTY_URI_TYPE)) {
syncOutput.setHeader("Content-Type", prop.getValue());
}
if (prop.getKey().equals(VOS.PROPERTY_URI_CONTENTMD5)) {
try {
URI md5 = new URI("md5:" + prop.getValue());
syncOutput.setDigest(md5);
} catch (URISyntaxException ex) {
log.error("found invalid checksum attribute " + prop.getValue() + " on node " + Utils.getPath(node));
// yes, just skip: users can set attributes so hard to tell if this is a bug or
// user mistake
}
}
}
}
}

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