/*
* eXist Open Source Native XML Database
* Copyright (C) 2014 The eXist Project
* http://exist-db.org
*
* 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
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.exist.mongodb.xquery.mongodb.client;
import com.mongodb.MongoClient;
import com.mongodb.MongoException;
import org.exist.dom.QName;
import org.exist.mongodb.shared.Constants;
import static org.exist.mongodb.shared.FunctionDefinitions.PARAMETER_MONGODB_CLIENT;
import org.exist.mongodb.shared.MongodbClientStore;
import org.exist.mongodb.xquery.MongodbModule;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.EmptySequence;
import org.exist.xquery.value.FunctionReturnSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
/**
* Implementation of the gridfs:close() function
*
* @author Dannes Wessels
*/
public class Close extends BasicFunction {
public final static FunctionSignature signatures[] = {
new FunctionSignature(
new QName("close", MongodbModule.NAMESPACE_URI, MongodbModule.PREFIX),
"Close MongoDB connector",
new SequenceType[]{
PARAMETER_MONGODB_CLIENT
},
new FunctionReturnSequenceType(Type.EMPTY, Cardinality.ZERO, "")
),
};
public Close(XQueryContext context, FunctionSignature signature) {
super(context, signature);
}
@Override
public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
// User must either be DBA or in the JMS group
if (!context.getSubject().hasDbaRole() && !context.getSubject().hasGroup(Constants.MONGODB_GROUP)) {
String txt = String.format("Permission denied, user '%s' must be a DBA or be in group '%s'",
context.getSubject().getName(), Constants.MONGODB_GROUP);
LOG.error(txt);
throw new XPathException(this, txt);
}
// Get connection URL
String mongodbClientId = args[0].itemAt(0).getStringValue();
// Handle ()
try {
MongoClient client = MongodbClientStore.getInstance().get(mongodbClientId);
if (client == null) {
throw new XPathException(this, String.format("Mongoclient %s could not be found.", mongodbClientId));
}
// Close connector with all connections
client.close();
// Remove from cache
MongodbClientStore.getInstance().remove(mongodbClientId);
// Report identifier
return EmptySequence.EMPTY_SEQUENCE;
} catch (XPathException ex) {
LOG.error(ex.getMessage(), ex);
throw new XPathException(this, ex.getMessage(), ex);
} catch (MongoException ex) {
LOG.error(ex.getMessage(), ex);
throw new XPathException(this, MongodbModule.MONG0002, ex.getMessage());
} catch (Throwable ex) {
LOG.error(ex.getMessage(), ex);
throw new XPathException(this, MongodbModule.MONG0003, ex.getMessage());
}
}
}