/*
 * 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.activemq.artemis.tests.integration.journal;

import java.io.File;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicInteger;

import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.core.io.SequentialFile;
import org.apache.activemq.artemis.core.io.SequentialFileFactory;
import org.apache.activemq.artemis.core.io.mapped.MappedSequentialFileFactory;
import org.apache.activemq.artemis.core.journal.EncodingSupport;
import org.apache.activemq.artemis.tests.unit.core.journal.impl.SequentialFileFactoryTestBase;
import org.junit.Assert;
import org.junit.Test;

public class MappedSequentialFileFactoryTest extends SequentialFileFactoryTestBase {

   @Override
   protected SequentialFileFactory createFactory(String folder) {
      return new MappedSequentialFileFactory(new File(folder), 2048, false, 0, 0, null);
   }

   @Test
   public void testInterrupts() throws Throwable {

      final EncodingSupport fakeEncoding = new EncodingSupport() {
         @Override
         public int getEncodeSize() {
            return 10;
         }

         @Override
         public void encode(ActiveMQBuffer buffer) {
            buffer.writeBytes(new byte[10]);
         }

         @Override
         public void decode(ActiveMQBuffer buffer) {

         }
      };

      final AtomicInteger calls = new AtomicInteger(0);
      final MappedSequentialFileFactory factory = new MappedSequentialFileFactory(new File(getTestDir()), fakeEncoding.getEncodeSize(), false, 0, 0, (code, message, file) -> {
         new Exception("shutdown").printStackTrace();
         calls.incrementAndGet();
      });

      Thread threadOpen = new Thread() {
         @Override
         public void run() {
            try {
               Thread.currentThread().interrupt();
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadOpen.start();
      threadOpen.join();

      Thread threadClose = new Thread() {
         @Override
         public void run() {
            try {
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
               file.write(fakeEncoding, true);
               Thread.currentThread().interrupt();
               file.close();
            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadClose.start();
      threadClose.join();

      Thread threadWrite = new Thread() {
         @Override
         public void run() {
            try {
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
               Thread.currentThread().interrupt();
               file.write(fakeEncoding, true);
               file.close();

            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadWrite.start();
      threadWrite.join();

      Thread threadFill = new Thread() {
         @Override
         public void run() {
            try {
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
               Thread.currentThread().interrupt();
               file.fill(fakeEncoding.getEncodeSize());
               file.close();

            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadFill.start();
      threadFill.join();

      Thread threadWriteDirect = new Thread() {
         @Override
         public void run() {
            try {
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
               ByteBuffer buffer = ByteBuffer.allocate(10);
               buffer.put(new byte[10]);
               Thread.currentThread().interrupt();
               file.writeDirect(buffer, true);
               file.close();

            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadWriteDirect.start();
      threadWriteDirect.join();

      Thread threadRead = new Thread() {
         @Override
         public void run() {
            try {
               SequentialFile file = factory.createSequentialFile("file.txt");
               file.open();
               file.write(fakeEncoding, true);
               file.position(0);
               ByteBuffer readBytes = ByteBuffer.allocate(fakeEncoding.getEncodeSize());
               Thread.currentThread().interrupt();
               file.read(readBytes);
               file.close();

            } catch (Exception e) {
               e.printStackTrace();
            }
         }
      };

      threadRead.start();
      threadRead.join();

      // An interrupt exception shouldn't issue a shutdown
      Assert.assertEquals(0, calls.get());
   }
}
