/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 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 program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.storage;
import java.io.InputStream;
import java.io.File;
import java.io.StringWriter;
import java.io.Writer;
import junit.framework.TestCase;
import junit.textui.TestRunner;
import org.exist.collections.Collection;
import org.exist.collections.IndexInfo;
import org.exist.dom.BinaryDocument;
import org.exist.dom.DocumentImpl;
import org.exist.security.SecurityManager;
import org.exist.security.xacml.AccessContext;
import org.exist.storage.dom.DOMFile;
import org.exist.storage.lock.Lock;
import org.exist.storage.serializers.Serializer;
import org.exist.storage.txn.TransactionManager;
import org.exist.storage.txn.Txn;
import org.exist.test.TestConstants;
import org.exist.util.Configuration;
import org.exist.xmldb.XmldbURI;
import org.exist.xquery.XQuery;
import org.exist.xquery.value.Item;
import org.exist.xquery.value.NodeValue;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceIterator;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Test recovery after a forced database corruption.
*
* @author wolf
*
*/
public class RecoveryTest extends TestCase {
public static void main(String[] args) {
TestRunner.run(RecoveryTest.class);
}
private static String directory = "samples/shakespeare";
private static File dir = null;
static {
String existHome = System.getProperty("exist.home");
File existDir = existHome==null ? new File(".") : new File(existHome);
dir = new File(existDir,directory);
}
private static String TEST_XML =
"<?xml version=\"1.0\"?>" +
"<test>" +
" <title>Hello</title>" +
" <para>Hello World!</para>" +
"</test>";
public void testStore() {
BrokerPool.FORCE_CORRUPTION = true;
BrokerPool pool = null;
DBBroker broker = null;
try {
pool = startDB();
assertNotNull(pool);
broker = pool.get(SecurityManager.SYSTEM_USER);
assertNotNull(broker);
TransactionManager transact = pool.getTransactionManager();
assertNotNull(transact);
Txn transaction = transact.beginTransaction();
assertNotNull(transaction);
System.out.println("Transaction started ...");
Collection root = broker.getOrCreateCollection(transaction, TestConstants.TEST_COLLECTION_URI);
assertNotNull(root);
broker.saveCollection(transaction, root);
Collection test2 = broker.getOrCreateCollection(transaction, TestConstants.TEST_COLLECTION_URI2);
broker.saveCollection(transaction, test2);
File files[] = dir.listFiles();
assertNotNull(files);
File f;
IndexInfo info;
BinaryDocument doc = test2.addBinaryResource(transaction, broker, TestConstants.TEST_BINARY_URI, "Some text data".getBytes(), null);
assertNotNull(doc);
// store some documents. Will be replaced below
for (int i = 0; i < files.length; i++) {
f = files[i];
try {
info = test2.validateXMLResource(transaction, broker, XmldbURI.create(f.getName()), new InputSource(f.toURI().toASCIIString()));
assertNotNull(info);
test2.store(transaction, broker, info, new InputSource(f.toURI().toASCIIString()), false);
} catch (SAXException e) {
// TODO : why pass invalid couments ?
System.err.println("Error found while parsing document: " + f.getName() + ": " + e.getMessage());
}
}
// replace some documents
for (int i = 0; i < files.length; i++) {
f = files[i];
try {
info = test2.validateXMLResource(transaction, broker, XmldbURI.create(f.getName()), new InputSource(f.toURI().toASCIIString()));
assertNotNull(info);
test2.store(transaction, broker, info, new InputSource(f.toURI().toASCIIString()), false);
} catch (SAXException e) {
// TODO : why pass invalid couments ?
System.err.println("Error found while parsing document: " + f.getName() + ": " + e.getMessage());
}
}
info = test2.validateXMLResource(transaction, broker, XmldbURI.create("test_string.xml"), TEST_XML);
assertNotNull(info);
//TODO : unlock the collection here ?
test2.store(transaction, broker, info, TEST_XML, false);
// remove last document
test2.removeXMLResource(transaction, broker, XmldbURI.create(files[files.length - 1].getName()));
transact.commit(transaction);
System.out.println("Transaction commited ...");
// the following transaction will not be committed. It will thus be rolled back by recovery
transaction = transact.beginTransaction();
System.out.println("Transaction started ...");
test2.removeXMLResource(transaction, broker, XmldbURI.create(files[0].getName()));
test2.removeBinaryResource(transaction, broker, doc);
// Don't commit...
transact.getJournal().flushToLog(true);
System.out.println("Transaction interrupted ...");
DOMFile domDb = ((NativeBroker)broker).getDOMFile();
assertNotNull(domDb);
Writer writer = new StringWriter();
domDb.dump(writer);
System.out.println(writer.toString());
} catch (Exception e) {
fail(e.getMessage());
e.printStackTrace();
} finally {
if (pool != null) pool.release(broker);
}
}
public void testRead() {
BrokerPool.FORCE_CORRUPTION = false;
BrokerPool pool = null;
DBBroker broker = null;
TransactionManager transact = null;
Txn transaction = null;
try {
System.out.println("testRead() ...\n");
pool = startDB();
assertNotNull(pool);
broker = pool.get(SecurityManager.SYSTEM_USER);
Serializer serializer = broker.getSerializer();
serializer.reset();
DocumentImpl doc = broker.getXMLResource(XmldbURI.ROOT_COLLECTION_URI.append("test/test2/hamlet.xml"), Lock.READ_LOCK);
assertNotNull("Document '" + DBBroker.ROOT_COLLECTION + "/test/test2/hamlet.xml' should not be null", doc);
String data = serializer.serialize(doc);
assertNotNull(data);
System.out.println(data);
doc.getUpdateLock().release(Lock.READ_LOCK);
doc = broker.getXMLResource(XmldbURI.ROOT_COLLECTION_URI.append("test/test2/test_string.xml"), Lock.READ_LOCK);
assertNotNull("Document '" + DBBroker.ROOT_COLLECTION + "/test/test2/test_string.xml' should not be null", doc);
data = serializer.serialize(doc);
assertNotNull(data);
System.out.println(data);
doc.getUpdateLock().release(Lock.READ_LOCK);
File files[] = dir.listFiles();
assertNotNull(files);
doc = broker.getXMLResource(TestConstants.TEST_COLLECTION_URI2.append(files[files.length - 1].getName()), Lock.READ_LOCK);
assertNull("Document '" + DBBroker.ROOT_COLLECTION + "/test/test2/'" + files[files.length - 1].getName() + " should not exist anymore", doc);
XQuery xquery = broker.getXQueryService();
assertNotNull(xquery);
Sequence seq = xquery.execute("//SPEECH[LINE &= 'king']", null, AccessContext.TEST);
assertNotNull(seq);
System.out.println("Found: " + seq.getItemCount());
for (SequenceIterator i = seq.iterate(); i.hasNext(); ) {
Item next = i.nextItem();
System.out.println(serializer.serialize((NodeValue) next));
}
BinaryDocument binDoc = (BinaryDocument) broker.getXMLResource(TestConstants.TEST_COLLECTION_URI2.append(TestConstants.TEST_BINARY_URI), Lock.READ_LOCK);
assertNotNull("Binary document is null", binDoc);
InputStream is = broker.getBinaryResource(binDoc);
byte [] bdata = new byte[(int)broker.getBinaryResourceSize(binDoc)];
is.read(bdata);
is.close();
data = new String(bdata);
assertNotNull(data);
System.out.println(data);
DOMFile domDb = ((NativeBroker)broker).getDOMFile();
assertNotNull(domDb);
Writer writer = new StringWriter();
domDb.dump(writer);
System.out.println(writer.toString());
transact = pool.getTransactionManager();
assertNotNull(transact);
transaction = transact.beginTransaction();
assertNotNull(transaction);
System.out.println("Transaction started ...");
Collection root = broker.openCollection(TestConstants.TEST_COLLECTION_URI, Lock.WRITE_LOCK);
assertNotNull(root);
transaction.registerLock(root.getLock(), Lock.WRITE_LOCK);
broker.removeCollection(transaction, root);
transact.commit(transaction);
System.out.println("Transaction commited ...");
} catch (Exception e) {
if (transact!=null) {
transact.abort(transaction);
}
fail(e.getMessage());
e.printStackTrace();
} finally {
if (pool != null) pool.release(broker);
}
}
protected BrokerPool startDB() {
try {
Configuration config = new Configuration();
BrokerPool.configure(1, 5, config);
return BrokerPool.getInstance();
} catch (Exception e) {
fail(e.getMessage());
}
return null;
}
protected void tearDown() {
BrokerPool.stopAll(false);
}
}