com.atomikos.jdbc.AtomikosNonXADataSourceBean Maven / Gradle / Ivy

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/**
 * Copyright (C) 2000-2020 Atomikos 
 *
 * LICENSE CONDITIONS
 *
 * See http://www.atomikos.com/Main/WhichLicenseApplies for details.
 */

package com.atomikos.jdbc;

import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

import com.atomikos.datasource.pool.ConnectionFactory;
import com.atomikos.datasource.pool.ConnectionPoolProperties;
import com.atomikos.datasource.pool.CreateConnectionException;
import com.atomikos.datasource.pool.XPooledConnection;
import com.atomikos.jdbc.internal.AbstractDataSourceBean;
import com.atomikos.jdbc.internal.AtomikosNonXAPooledConnection;
import com.atomikos.jdbc.internal.AtomikosSQLException;
import com.atomikos.logging.Logger;
import com.atomikos.logging.LoggerFactory;
import com.atomikos.util.ClassLoadingHelper;

 /**
  * 
  * A Bean class for DataSource access to non-XA JDBC implementations. 
  * Instances are JTA transaction-aware and can rollback the work done 
  * over multiple connections (provided that all work was done in one and the same thread).
  * 
  *
  */
public class AtomikosNonXADataSourceBean extends AbstractDataSourceBean 
{
	private static final Logger LOGGER = LoggerFactory.createLogger(AtomikosNonXADataSourceBean.class);

	private static final long serialVersionUID = 1L;
	
	private String url;
	
	private String user;
	
	private String password;
	
	private String driverClassName;
	
	private boolean readOnly;
	
	private boolean localTransactionMode;
	
	private boolean ignoreJtaTransactions;
	
	public AtomikosNonXADataSourceBean() {

	}
	/**
     * Sets the URL to use for getting connections. Required.
     * 
     * @param url
     */
	
	public void setUrl ( String url ) 
	{
		this.url = url;
	}
	
	/**
	 * Gets the URL to connect. 
	 */
	
	public String getUrl()
	{
		return url;
	}
	

	/**
	 * Marks this datasource as being used for read-only work. Optional.
	 * 
	 * Setting this to true will avoid warnings/errors on 2-phase commit. ReadOnly mode
	 * is intended to avoid XA configuration of databases where no updates are
	 * being done.
	 * 
	 * @param readOnly Defaults to false.
	 */
	
	public void setReadOnly ( boolean readOnly ) 
	{
		this.readOnly = readOnly;
	}

	/**
	 * @return Whether or not this datasource is marked as readOnly.
	 */
	
	public boolean getReadOnly()
	{
		return readOnly;
	}

    /**
     * @return The password.
     */
	
	public String getPassword ()
	{
		return password;
	}

    /**
     * Sets the password to use.
     * 
     * @param string
     */
	
    public void setPassword ( String string )
    {
        password = string;
    }

    /**
     * Set the user name to get connections with.
     * 
     * @param string
     */
    
    public void setUser ( String string )
    {
        user = string;
    }

    /**
     * @return The URL to connect with.
     */
    
    public String getUser ()
    {
        return user;
    }
    
    /**
     * 
     * @return The DriverManager class name.
     */

    public String getDriverClassName ()
    {
        return driverClassName;
    }

    /**
     * Sets the driver class name to be used by the DriverManager. Required.
     * 
     * @param string
     */
    public void setDriverClassName ( String string )
    {
        driverClassName = string;
    }
    

	protected void doClose() 
	{
		//nothing to do
	}

	protected ConnectionFactory doInit() throws Exception 
	{
		AtomikosNonXAConnectionFactory ret = null;
		if ( LOGGER.isDebugEnabled() ) LOGGER.logInfo(
				this + ": initializing with [" +
				" uniqueResourceName=" + getUniqueResourceName() + "," +
				" maxPoolSize=" + getMaxPoolSize() + "," +
				" minPoolSize=" + getMinPoolSize() + "," +
				" borrowConnectionTimeout=" + getBorrowConnectionTimeout() + "," +
				" maxIdleTime=" + getMaxIdleTime() + "," +
				" reapTimeout=" + getReapTimeout() + "," +
				" maintenanceInterval=" + getMaintenanceInterval() + "," +
				" testQuery=" + getTestQuery() + "," +
				" driverClassName=" + getDriverClassName() + "," +
				" user=" + getUser() + "," +
				" url=" + getUrl() + 
				" loginTimeout=" + getLoginTimeout() + "," +
				" localTransactionMode=" + getLocalTransactionMode() + "," +
				" ignoreJtaTransactions=" + getIgnoreJtaTransactions() +
				"]"
				);
		
		
		ret = new AtomikosNonXAConnectionFactory ( this , url , driverClassName , user , password , getLoginTimeout() , readOnly, ignoreJtaTransactions ) ;
		ret.init();
		return ret;
	}

	public Connection getConnection() throws SQLException
	{
		if ( LOGGER.isDebugEnabled() ) LOGGER.logDebug ( this + ": getConnection()..." );
		
		init();
		
		//let pool take care of reusing an existing handle
		Connection connection = super.getConnection();          
		
        if ( LOGGER.isTraceEnabled() ) LOGGER.logTrace ( this + ": returning " + connection );
		return connection;
	}

	/**
	 * Should JTA transactions be ignored? Optional - most use cases should not change the default setting.
	 * If set, then this instance will act like a regular, non-JTA JDBC datasource.
	 * 
	 * @param value Defaults to false.
	 */
	public void setLocalTransactionMode(boolean value) {
	    this.localTransactionMode = value;
	}
	
	/**
	 * Tests if JTA transactions are ignored or not.
	 */
	public boolean getLocalTransactionMode() {
	    return localTransactionMode;
	}

	@Override
	protected boolean isAssignableFromWrappedVendorClass(Class iface) {
		//we don't really care
		return false;
	}

	@Override
	protected Object unwrapVendorInstance() {
		throw new UnsupportedOperationException();
	}
	
	
	
	
	private static class AtomikosNonXAConnectionFactory implements ConnectionFactory 
	{
		private static final Logger LOGGER = LoggerFactory.createLogger(AtomikosNonXAConnectionFactory.class);
		
		private final String url;
		private final String driverClassName;
		private final String user;
		private final String password;
		private final ConnectionPoolProperties props;
		private final int loginTimeout;
		private final boolean readOnly;
		
		
		private Driver driver;
		private Properties connectionProperties = new Properties();
		
		private AtomikosNonXAConnectionFactory ( ConnectionPoolProperties props , 
				String url , String driverClassName , String user , 
				String password , int loginTimeout , boolean readOnly, boolean ignoreJtaTransactions )
		{
			this.props = props;
			this.user = user;
			this.password = password;
			this.url = url;
			this.driverClassName = driverClassName;
			this.loginTimeout = loginTimeout;
			this.readOnly = readOnly;
		}
		
		private void init() throws SQLException 
		{
			try {
				Class driverClass = ClassLoadingHelper.loadClass ( driverClassName );
	            driver = driverClass.newInstance();
	            if(user!=null){
	            	connectionProperties.put("user", user);	
	            }
	            if(password!=null){
	            	connectionProperties.put("password",password);
	            }
	        } catch ( InstantiationException e ) {
	           AtomikosSQLException.throwAtomikosSQLException ( "Could not instantiate driver class: "
	                    + driverClassName );
	        } catch ( IllegalAccessException e ) {
	        	 AtomikosSQLException.throwAtomikosSQLException  ( e.getMessage () );
	        } catch ( ClassNotFoundException e ) {
	        	 AtomikosSQLException.throwAtomikosSQLException  ( "Driver class not found: '"
	                    + driverClassName + "' - please make sure the spelling is correct." );
	        } catch (ClassCastException cce){
	        	String msg = "Driver class '" + driverClassName + "' does not seem to be a valid JDBC driver - please check the spelling and verify your JDBC vendor's documentation";
	        	AtomikosSQLException.throwAtomikosSQLException ( msg );
	        }
	        DriverManager.setLoginTimeout ( loginTimeout );
		}
		
		private Connection getConnection() throws SQLException 
		{
			
			Connection ret = null;
		    //case : 61748 Usage of drivermanager is not possible, as it does not respect the ContextClassLoader
	        //ret = DriverManager.getConnection ( url , user, password );
		    ret= driver.connect(url, connectionProperties);
	        return ret;
		}

		public XPooledConnection createPooledConnection() throws CreateConnectionException {
			Connection c;
			try {
				c = getConnection();
			} catch (SQLException e) {
				LOGGER.logWarning ( "NonXAConnectionFactory: failed to create connection: " , e );
				throw new CreateConnectionException ( "Could not create JDBC connection" , e );
			}
			return new AtomikosNonXAPooledConnection ( c , props , readOnly);
		}

	}

	/**
	 * Should JTA transactions be ignored completely or not?
	 * Optional, defaults to false.
	 * @param ignoreJtaTransactions
	 */
	public void setIgnoreJtaTransactions(boolean ignoreJtaTransactions) {
		this.ignoreJtaTransactions = ignoreJtaTransactions;
	}
	
	@Override
	public boolean getIgnoreJtaTransactions() {
		return this.ignoreJtaTransactions;
	}
 

	
}