/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.commons.monitoring.jdbc;
  
  
  import org.apache.commons.monitoring.Role;
  import org.apache.commons.monitoring.counters.Counter;
  import org.apache.commons.monitoring.repositories.Repository;
  
  import javax.sql.DataSource;
  import java.io.PrintWriter;
  import java.sql.Connection;
  import java.sql.SQLException;
  import java.sql.SQLFeatureNotSupportedException;
  import java.util.logging.Logger;
  
  
  /**
   * @author <a href="mailto:nicolas@apache.org">Nicolas De Loof</a>
   */
  public class MonitoredDataSource implements DataSource {
      /**
       * delegate DataSource
       */
      private DataSource dataSource;
  
      /**
       * dataSource name
       */
      private String dataSourceName = DataSource.class.getName();
      private Counter counter;
  
      /**
       * Constructor
       *
       * @param dataSource the datasource to counter
       */
      public MonitoredDataSource(final DataSource dataSource) {
          this.dataSource = dataSource;
          this.counter = Repository.INSTANCE.getCounter(new Counter.Key(Role.JDBC, dataSourceName));
      }
  
      public MonitoredDataSource() {
          super();
      }
  
      public void setDataSource(final DataSource dataSource) {
          this.dataSource = dataSource;
      }
  
      /**
       * @param dataSourceName the dataSourceName to set
       */
      public void setDataSourceName(final String dataSourceName) {
          this.dataSourceName = dataSourceName;
      }
  
      /**
       * @param counter the counter to set
       */
      public void setCounter(final Counter counter) {
          this.counter = counter;
      }
  
      protected Connection monitor(final Connection connection) {
          return MonitoredConnection.monitor(connection, counter);
      }
  
      /**
       * @return the dataSource
       */
      protected DataSource getDataSource() {
          return dataSource;
      }
  
      /**
       * {@inheritDoc}
       *
       * @see javax.sql.DataSource#getConnection()
       */
      public Connection getConnection()
          throws SQLException {
          return monitor(getDataSource().getConnection());
      }
 
     /**
      * {@inheritDoc}
      *
      * @see javax.sql.DataSource#getConnection(java.lang.String, java.lang.String)
      */
     public Connection getConnection(String username, String password)
         throws SQLException {
         return monitor(getDataSource().getConnection(username, password));
     }
 
     public int getLoginTimeout()
         throws SQLException {
         return getDataSource().getLoginTimeout();
     }
 
     public PrintWriter getLogWriter()
         throws SQLException {
         return getDataSource().getLogWriter();
     }
 
     public void setLoginTimeout(int seconds)
         throws SQLException {
         getDataSource().setLoginTimeout(seconds);
     }
 
     public void setLogWriter(PrintWriter out)
         throws SQLException {
         getDataSource().setLogWriter(out);
     }
 
     // --- jdbc4 ----
 
     public boolean isWrapperFor(Class<?> iface)
         throws SQLException {
         return getDataSource().isWrapperFor(iface);
     }
 
     public <T> T unwrap(Class<T> iface)
         throws SQLException {
         return getDataSource().unwrap(iface);
     }
 
     public Logger getParentLogger()
         throws SQLFeatureNotSupportedException {
         return Logger.getLogger("commons-monitoring.datasource");
     }
 }