/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.testing.classic;
  
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.pool.ConnPoolListener;
  import org.apache.hc.core5.pool.ConnPoolStats;
  import org.apache.hc.core5.pool.PoolStats;
  import org.slf4j.LoggerFactory;
  import org.slf4j.Logger;
  
  public class LoggingConnPoolListener implements ConnPoolListener<HttpHost> {
  
      public final static LoggingConnPoolListenerngConnPoolListener.html#LoggingConnPoolListener">LoggingConnPoolListener INSTANCE = new LoggingConnPoolListener();
  
      private final Logger connLog = LoggerFactory.getLogger("org.apache.hc.core5.http.connection");
  
      private LoggingConnPoolListener() {
      }
  
      @Override
      public void onLease(final HttpHost route, final ConnPoolStats<HttpHost> connPoolStats) {
          if (connLog.isDebugEnabled()) {
              final StringBuilder buf = new StringBuilder();
              buf.append("Leased ").append(route).append(" ");
              final PoolStats totals = connPoolStats.getTotalStats();
              buf.append(" total kept alive: ").append(totals.getAvailable()).append("; ");
              buf.append("total allocated: ").append(totals.getLeased() + totals.getAvailable());
              buf.append(" of ").append(totals.getMax());
              connLog.debug(buf.toString());
          }
      }
  
      @Override
      public void onRelease(final HttpHost route, final ConnPoolStats<HttpHost> connPoolStats) {
          if (connLog.isDebugEnabled()) {
              final StringBuilder buf = new StringBuilder();
              buf.append("Released ").append(route).append(" ");
              final PoolStats totals = connPoolStats.getTotalStats();
              buf.append(" total kept alive: ").append(totals.getAvailable()).append("; ");
              buf.append("total allocated: ").append(totals.getLeased() + totals.getAvailable());
              buf.append(" of ").append(totals.getMax());
              connLog.debug(buf.toString());
          }
      }
  
  }