http://www.avaje.org/ebean-datasource-parent/ebean-datasource-api: ebean datasource api
  • Rob Bygrave 
package io.ebean.datasource;

import javax.sql.DataSource;
import java.sql.SQLException;


Listener for notifications about the DataSource such as when the DataSource
goes down, up or gets close to it's maximum size.


The intention is to send email notifications to an administrator (or similar)
when these events occur on the DataSource.



/**
 * Listener for notifications about the DataSource such as when the DataSource
 * goes down, up or gets close to it's maximum size.
 * <p>
 * The intention is to send email notifications to an administrator (or similar)
 * when these events occur on the DataSource.
 * </p>
 */
public interface DataSourceAlert {

  
Send an alert to say the dataSource is back up.

/**
   * Send an alert to say the dataSource is back up.
   */
  void dataSourceUp(DataSource dataSource);

  
Send an alert to say the dataSource is down.

/**
   * Send an alert to say the dataSource is down.
   */
  void dataSourceDown(DataSource dataSource, SQLException reason);

  
Send an alert to say the dataSource is getting close to its max size.

/**
   * Send an alert to say the dataSource is getting close to its max size.
   */
  void dataSourceWarning(DataSource dataSource, String msg);
}