org.h2.store.RecoverTester Maven / Gradle / Ivy
/*
* Copyright 2004-2021 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.store;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.HashSet;
import org.h2.api.ErrorCode;
import org.h2.engine.ConnectionInfo;
import org.h2.engine.Constants;
import org.h2.engine.Database;
import org.h2.engine.SessionLocal;
import org.h2.message.DbException;
import org.h2.store.fs.FileUtils;
import org.h2.store.fs.Recorder;
import org.h2.store.fs.rec.FilePathRec;
import org.h2.tools.Recover;
import org.h2.util.IOUtils;
import org.h2.util.StringUtils;
import org.h2.util.Utils;
/**
* A tool that simulates a crash while writing to the database, and then
* verifies the database doesn't get corrupt.
*/
public class RecoverTester implements Recorder {
private static final RecoverTester instance = new RecoverTester();
private String testDatabase = "memFS:reopen";
private int writeCount = Utils.getProperty("h2.recoverTestOffset", 0);
private int testEvery = Utils.getProperty("h2.recoverTest", 64);
private final long maxFileSize = Utils.getProperty(
"h2.recoverTestMaxFileSize", Integer.MAX_VALUE) * 1024L * 1024;
private int verifyCount;
private final HashSet knownErrors = new HashSet<>();
private volatile boolean testing;
/**
* Initialize the recover test.
*
* @param recoverTest the value of the recover test parameter
*/
public static synchronized void init(String recoverTest) {
if (StringUtils.isNumber(recoverTest)) {
instance.setTestEvery(Integer.parseInt(recoverTest));
}
FilePathRec.setRecorder(instance);
}
@Override
public void log(int op, String fileName, byte[] data, long x) {
if (op != Recorder.WRITE && op != Recorder.TRUNCATE) {
return;
}
if (!fileName.endsWith(Constants.SUFFIX_MV_FILE)) {
return;
}
writeCount++;
if ((writeCount % testEvery) != 0) {
return;
}
if (FileUtils.size(fileName) > maxFileSize) {
// System.out.println(fileName + " " + IOUtils.length(fileName));
return;
}
if (testing) {
// avoid deadlocks
return;
}
testing = true;
PrintWriter out = null;
try {
out = new PrintWriter(
new OutputStreamWriter(
FileUtils.newOutputStream(fileName + ".log", true)));
testDatabase(fileName, out);
} catch (IOException e) {
throw DbException.convertIOException(e, null);
} finally {
IOUtils.closeSilently(out);
testing = false;
}
}
private synchronized void testDatabase(String fileName, PrintWriter out) {
out.println("+ write #" + writeCount + " verify #" + verifyCount);
try {
IOUtils.copyFiles(fileName, testDatabase + Constants.SUFFIX_MV_FILE);
verifyCount++;
// avoid using the Engine class to avoid deadlocks
ConnectionInfo ci = new ConnectionInfo("jdbc:h2:" + testDatabase +
";FILE_LOCK=NO;TRACE_LEVEL_FILE=0", null, "", "");
Database database = new Database(ci, null);
// close the database
SessionLocal sysSession = database.getSystemSession();
sysSession.prepare("script to '" + testDatabase + ".sql'").query(0);
sysSession.prepare("shutdown immediately").update();
database.removeSession(null);
// everything OK - return
return;
} catch (DbException e) {
SQLException e2 = DbException.toSQLException(e);
int errorCode = e2.getErrorCode();
if (errorCode == ErrorCode.WRONG_USER_OR_PASSWORD) {
return;
} else if (errorCode == ErrorCode.FILE_ENCRYPTION_ERROR_1) {
return;
}
e.printStackTrace(System.out);
} catch (Exception e) {
// failed
int errorCode = 0;
if (e instanceof SQLException) {
errorCode = ((SQLException) e).getErrorCode();
}
if (errorCode == ErrorCode.WRONG_USER_OR_PASSWORD) {
return;
} else if (errorCode == ErrorCode.FILE_ENCRYPTION_ERROR_1) {
return;
}
e.printStackTrace(System.out);
}
out.println("begin ------------------------------ " + writeCount);
try {
Recover.execute(fileName.substring(0, fileName.lastIndexOf('/')), null);
} catch (SQLException e) {
// ignore
}
testDatabase += "X";
try {
IOUtils.copyFiles(fileName, testDatabase + Constants.SUFFIX_MV_FILE);
// avoid using the Engine class to avoid deadlocks
ConnectionInfo ci = new ConnectionInfo("jdbc:h2:" +
testDatabase + ";FILE_LOCK=NO", null, null, null);
Database database = new Database(ci, null);
// close the database
database.removeSession(null);
} catch (Exception e) {
int errorCode = 0;
if (e instanceof DbException) {
e = ((DbException) e).getSQLException();
errorCode = ((SQLException) e).getErrorCode();
}
if (errorCode == ErrorCode.WRONG_USER_OR_PASSWORD) {
return;
} else if (errorCode == ErrorCode.FILE_ENCRYPTION_ERROR_1) {
return;
}
StringBuilder buff = new StringBuilder();
StackTraceElement[] list = e.getStackTrace();
for (int i = 0; i < 10 && i < list.length; i++) {
buff.append(list[i].toString()).append('\n');
}
String s = buff.toString();
if (!knownErrors.contains(s)) {
out.println(writeCount + " code: " + errorCode + " " + e.toString());
e.printStackTrace(System.out);
knownErrors.add(s);
} else {
out.println(writeCount + " code: " + errorCode);
}
}
}
public void setTestEvery(int testEvery) {
this.testEvery = testEvery;
}
}