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/*
* Distributed as part of c3p0 v.0.9.1.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software 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 software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package io.logspace.agent.shaded.mchange.v2.c3p0.util;
import java.sql.*;
import javax.sql.*;
import java.lang.reflect.*;
import java.util.Random;
import io.logspace.agent.shaded.mchange.v2.sql.SqlUtils;
import io.logspace.agent.shaded.mchange.v2.c3p0.C3P0ProxyConnection;
public final class TestUtils
{
private final static Method OBJECT_EQUALS;
private final static Method IDENTITY_HASHCODE;
private final static Method IPCFP;
static
{
try
{
OBJECT_EQUALS = Object.class.getMethod("equals", new Class[] { Object.class });
IDENTITY_HASHCODE = System.class.getMethod("identityHashCode", new Class[] {Object.class});
// is this okay? getting a method from a class while it is still being initialized?
IPCFP = TestUtils.class.getMethod("isPhysicalConnectionForProxy", new Class[] {Connection.class, C3P0ProxyConnection.class});
}
catch ( Exception e )
{
e.printStackTrace();
throw new RuntimeException("Huh? Can't reflectively get ahold of expected methods?");
}
}
/**
* In general, if this method returns true for two distinct C3P0ProxyConnections, it indicates a c3p0 bug.
* Once a proxy Connection is close()ed, it should not permit any sort of operation. Prior to Connection
* close(), there should be at most one valid proxy Connection associated with a given physical Connection.
*/
public static boolean samePhysicalConnection( C3P0ProxyConnection con1, C3P0ProxyConnection con2 ) throws SQLException
{
try
{
Object out = con1.rawConnectionOperation( IPCFP, null, new Object[] { C3P0ProxyConnection.RAW_CONNECTION, con2 } );
return ((Boolean) out).booleanValue();
}
catch (Exception e)
{
e.printStackTrace();
throw SqlUtils.toSQLException( e );
}
}
public static boolean isPhysicalConnectionForProxy( Connection physicalConnection, C3P0ProxyConnection proxy ) throws SQLException
{
try
{
Object out = proxy.rawConnectionOperation( OBJECT_EQUALS, physicalConnection, new Object[] { C3P0ProxyConnection.RAW_CONNECTION } );
return ((Boolean) out).booleanValue();
}
catch (Exception e)
{
e.printStackTrace();
throw SqlUtils.toSQLException( e );
}
}
public static int physicalConnectionIdentityHashCode( C3P0ProxyConnection conn ) throws SQLException
{
try
{
Object out = conn.rawConnectionOperation( IDENTITY_HASHCODE, null, new Object[] { C3P0ProxyConnection.RAW_CONNECTION } );
return ((Integer) out).intValue();
}
catch (Exception e)
{
e.printStackTrace();
throw SqlUtils.toSQLException( e );
}
}
public static DataSource unreliableCommitDataSource(DataSource ds) throws Exception
{
return (DataSource) Proxy.newProxyInstance( TestUtils.class.getClassLoader(),
new Class[] { DataSource.class },
new StupidDataSourceInvocationHandler( ds ) );
}
private TestUtils()
{}
static class StupidDataSourceInvocationHandler implements InvocationHandler
{
DataSource ds;
Random r = new Random();
StupidDataSourceInvocationHandler(DataSource ds)
{ this.ds = ds; }
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
if ( "getConnection".equals(method.getName()) )
{
Connection conn = (Connection) method.invoke( ds, args );
return Proxy.newProxyInstance( TestUtils.class.getClassLoader(),
new Class[] { Connection.class },
new StupidConnectionInvocationHandler( conn ) );
}
else
return method.invoke( ds, args );
}
}
static class StupidConnectionInvocationHandler implements InvocationHandler
{
Connection conn;
Random r = new Random();
boolean invalid = false;
StupidConnectionInvocationHandler(Connection conn)
{ this.conn = conn; }
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable
{
if ("close".equals(method.getName()))
{
if (invalid)
{
new Exception("Duplicate close() called on Connection!!!").printStackTrace();
}
else
{
//new Exception("CLOSE CALLED ON UNPOOLED DATASOURCE CONNECTION!").printStackTrace();
invalid = true;
}
return null;
}
else if ( invalid )
throw new SQLException("Connection closed -- cannot " + method.getName());
else if ( "commit".equals(method.getName()) && r.nextInt(100) == 0 )
{
conn.rollback();
throw new SQLException("Random commit exception!!!");
}
else if (r.nextInt(200) == 0)
{
conn.rollback();
conn.close();
throw new SQLException("Random Fatal Exception Occurred!!!");
}
else
return method.invoke( conn, args );
}
}
}
