/*
    * 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.pool2.proxy;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.PrintWriter;
  import java.io.StringWriter;
  import java.time.Duration;
  
  import org.apache.commons.pool2.BasePooledObjectFactory;
  import org.apache.commons.pool2.ObjectPool;
  import org.apache.commons.pool2.PooledObject;
  import org.apache.commons.pool2.PooledObjectFactory;
  import org.apache.commons.pool2.impl.AbandonedConfig;
  import org.apache.commons.pool2.impl.DefaultPooledObject;
  import org.apache.commons.pool2.impl.GenericObjectPool;
  import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  
  public abstract class AbstractTestProxiedObjectPool {
  
      protected interface TestObject {
          String getData();
          void setData(String data);
      }
      private static class TestObjectFactory extends
              BasePooledObjectFactory<TestObject> {
  
          @Override
          public TestObject create() {
              return new TestObjectImpl();
          }
          @Override
          public PooledObject<TestObject> wrap(final TestObject value) {
              return new DefaultPooledObject<>(value);
          }
      }
  
      private static class TestObjectImpl implements TestObject {
  
          private String data;
  
          @Override
          public String getData() {
              return data;
          }
  
          @Override
          public void setData(final String data) {
              this.data = data;
          }
      }
      private static final String DATA1 = "data1";
  
      private static final Duration ABANDONED_TIMEOUT_SECS = Duration.ofSeconds(3);
  
  
      private ObjectPool<TestObject> pool;
  
      private StringWriter log;
  
  
      protected abstract ProxySource<TestObject> getproxySource();
  
  
      @BeforeEach
      public void setUp() {
          log = new StringWriter();
  
          final PrintWriter pw = new PrintWriter(log);
          final AbandonedConfig abandonedConfig = new AbandonedConfig();
          abandonedConfig.setLogAbandoned(true);
          abandonedConfig.setRemoveAbandonedOnBorrow(true);
          abandonedConfig.setUseUsageTracking(true);
          abandonedConfig.setRemoveAbandonedTimeout(ABANDONED_TIMEOUT_SECS);
          abandonedConfig.setLogWriter(pw);
  
          final GenericObjectPoolConfig<TestObject> config = new GenericObjectPoolConfig<>();
          config.setMaxTotal(3);
 
         final PooledObjectFactory<TestObject> factory = new TestObjectFactory();
 
         @SuppressWarnings("resource")
         final ObjectPool<TestObject> innerPool = new GenericObjectPool<>(factory, config, abandonedConfig);
 
         pool = new ProxiedObjectPool<>(innerPool, getproxySource());
     }
 
 
     @Test
     public void testAccessAfterInvalidate() throws Exception {
         final TestObject obj = pool.borrowObject();
         assertNotNull(obj);
 
         // Make sure proxied methods are working
         obj.setData(DATA1);
         assertEquals(DATA1, obj.getData());
 
         pool.invalidateObject(obj);
 
         assertNotNull(obj);
 
         assertThrows(IllegalStateException.class,
                 obj::getData);
 
     }
 
 
     @Test
     public void testAccessAfterReturn() throws Exception {
         final TestObject obj = pool.borrowObject();
         assertNotNull(obj);
 
         // Make sure proxied methods are working
         obj.setData(DATA1);
         assertEquals(DATA1, obj.getData());
 
         pool.returnObject(obj);
 
         assertNotNull(obj);
 
         assertThrows(IllegalStateException.class,
                 obj::getData);
     }
 
 
     @Test
     public void testBorrowObject() throws Exception {
         final TestObject obj = pool.borrowObject();
         assertNotNull(obj);
 
         // Make sure proxied methods are working
         obj.setData(DATA1);
         assertEquals(DATA1, obj.getData());
 
         pool.returnObject(obj);
     }
 
     @Test
     public void testPassThroughMethods01() throws Exception {
         assertEquals(0, pool.getNumActive());
         assertEquals(0, pool.getNumIdle());
 
         pool.addObject();
 
         assertEquals(0, pool.getNumActive());
         assertEquals(1, pool.getNumIdle());
 
         pool.clear();
 
         assertEquals(0, pool.getNumActive());
         assertEquals(0, pool.getNumIdle());
     }
 
 
     @Test
     public void testPassThroughMethods02() {
         pool.close();
 
         assertThrows(IllegalStateException.class,
                 () -> pool.addObject());
     }
 
 
     @Test
     public void testUsageTracking() throws Exception {
         final TestObject obj = pool.borrowObject();
         assertNotNull(obj);
 
         // Use the object to trigger collection of last used stack trace
         obj.setData(DATA1);
 
         // Sleep long enough for the object to be considered abandoned
         Thread.sleep(ABANDONED_TIMEOUT_SECS.plusSeconds(2).toMillis());
 
         // Borrow another object to trigger the abandoned object processing
         pool.borrowObject();
 
         final String logOutput = log.getBuffer().toString();
 
         assertTrue(logOutput.contains("Pooled object created"));
         assertTrue(logOutput.contains("The last code to use this object was"));
     }
 
 }