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 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 */
// Portions Copyright 2016-2022 Payara Foundation and/or its affiliates
package com.sun.gjc.spi;

import com.sun.gjc.common.DataSourceObjectBuilder;
import com.sun.gjc.spi.base.ConnectionHolder;
import com.sun.gjc.util.SQLTraceDelegator;
import com.sun.logging.LogDomains;

import java.io.Serializable;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.Connection;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.api.jdbc.SQLTraceRecord;


/**
 * Factory to create JDBC objects
 */
public abstract class JdbcObjectsFactory implements Serializable {

    protected final static Logger _logger;

    static {
        _logger = LogDomains.getLogger(JdbcObjectsFactory.class, LogDomains.RSR_LOGGER);
    }

    /**
     * Returns the Object Factory.
     *
     * @return JdbcObjectsFactory
     */
    public static JdbcObjectsFactory getInstance() {
        JdbcObjectsFactory factory = null;
        try {
            factory = (JdbcObjectsFactory) Class.forName("com.sun.gjc.spi.jdbc40.Jdbc40ObjectsFactory").newInstance();
        } catch (Exception e) {
            _logger.log(Level.WARNING, "jdbc.jdbc_factory_class_load_exception", e);
        }
        return factory;
    }

    /**
     * Returns a DataSource instance.
     *
     * @param mcfObject Managed Connection Factory
     * @param cmObject  Connection Manager
     * @return DataSource
     */
    public abstract javax.sql.DataSource getDataSourceInstance(ManagedConnectionFactoryImpl mcfObject,
                                                               jakarta.resource.spi.ConnectionManager cmObject);

    /**
     * To get an instance of ConnectionHolder.

     * Will return a ConnectionHolder with or without wrapper

     *
     * @param conObject         Connection
     * @param mcObject          ManagedConnection
     * @param criObject         Connection Request Info
     * @param statementWrapping Whether to wrap statement objects or not.
     * @return ConnectionHolder
     */
    public abstract ConnectionHolder getConnection(Connection conObject,
                                                   ManagedConnectionImpl mcObject,
                                                   jakarta.resource.spi.ConnectionRequestInfo criObject,
                                                   boolean statementWrapping,
                                                   SQLTraceDelegator sqlTraceDelegator);

    protected Connection getProxiedConnection(final Object conObject, Class[] connIntf,
            final SQLTraceDelegator sqlTraceDelegator) {
        Connection proxiedConn = null;
        try {

            proxiedConn = (Connection) getProxyObject(conObject, connIntf, sqlTraceDelegator);
        } catch (Exception ex) {
            _logger.log(Level.SEVERE, "jdbc.jdbc_proxied_connection_get_exception", ex.getMessage());
        }
        return proxiedConn;
    }

    protected  T getProxyObject(final Object actualObject, Class[] ifaces,
            final SQLTraceDelegator sqlTraceDelegator) throws Exception {

        T result;
        InvocationHandler ih = new InvocationHandler() {

            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                SQLTraceRecord record = new SQLTraceRecord();
                record.setMethodName(method.getName());
                record.setParams(args);
                record.setClassName(actualObject.getClass().getName());
                record.setThreadName(Thread.currentThread().getName());
                record.setThreadID(Thread.currentThread().getId());
                record.setTimeStamp(System.currentTimeMillis());
                long startTime = System.currentTimeMillis();
                Object methodResult = method.invoke(actualObject, args);
                record.setExecutionTime(System.currentTimeMillis() - startTime);
                sqlTraceDelegator.sqlTrace(record);
                return methodResult;
            }
        };
        result = (T) Proxy.newProxyInstance(actualObject.getClass().getClassLoader(), ifaces, ih);
        return result;
    }

}