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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.internal.process;

import java.io.File;

import javax.management.ObjectName;

import junit.framework.TestCase;

/**
 * @author Kirk Lund
 * @since 8.0
 */
public class ProcessorControllerFactoryJUnitTest extends TestCase {

  public ProcessorControllerFactoryJUnitTest(String name) {
    super(name);
  }
  
  @Override
  public void setUp() throws Exception {
    super.setUp();
  }
  
  @Override
  public void tearDown() throws Exception {
    super.tearDown();
    enableAttachApi();
  }
  
  public void testIsAttachAPIFound() throws Exception {
    validateProcessControllerFactory(true);
    disableAttachApi();
    validateProcessControllerFactory(false);
    enableAttachApi();
    validateProcessControllerFactory(true);
  }
  
  private void validateProcessControllerFactory(boolean isAttachAPIFound) throws Exception {
    final ProcessControllerFactory factory = new ProcessControllerFactory();
    assertEquals(isAttachAPIFound, factory.isAttachAPIFound());
    if (isAttachAPIFound) {
      final ProcessControllerParameters parms = new NullMBeanControllerParameters();
      final ProcessController controller = factory.createProcessController(parms, ProcessUtils.identifyPid());
      assertTrue(controller instanceof MBeanProcessController);
    } else {
      final ProcessControllerParameters parms = new NullFileControllerParameters();
      final ProcessController controller = factory.createProcessController(parms, ProcessUtils.identifyPid());
      assertTrue(controller instanceof FileProcessController);
    }
  }
  
  private static void disableAttachApi() {
    System.setProperty(ProcessControllerFactory.PROPERTY_DISABLE_ATTACH_API, "true");
  }

  private static void enableAttachApi() {
    System.clearProperty(ProcessControllerFactory.PROPERTY_DISABLE_ATTACH_API);
  }
  
  private static class NullMBeanControllerParameters implements ProcessControllerParameters {
    @Override
    public int getProcessId() {
      return 0;
    }
    @Override
    public ProcessType getProcessType() {
      return null;
    }
    @Override
    public ObjectName getNamePattern() {
      return null;
    }
    @Override
    public String getPidAttribute() {
      return null;
    }
    @Override
    public String getStatusMethod() {
      return null;
    }
    @Override
    public String getStopMethod() {
      return null;
    }
    @Override
    public String[] getAttributes() {
      return null;
    }
    @Override
    public Object[] getValues() {
      return null;
    }
    @Override
    public File getPidFile() {
      throw new UnsupportedOperationException("Not implemented by NullMBeanControllerParameters");
    }
    @Override
    public File getWorkingDirectory() {
      throw new UnsupportedOperationException("Not implemented by NullMBeanControllerParameters");
    }
  }

  private static class NullFileControllerParameters implements ProcessControllerParameters {
    @Override
    public int getProcessId() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public ProcessType getProcessType() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public ObjectName getNamePattern() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public String getPidAttribute() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public String getStatusMethod() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public String getStopMethod() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public String[] getAttributes() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public Object[] getValues() {
      throw new UnsupportedOperationException("Not implemented by NullFileControllerParameters");
    }
    @Override
    public File getPidFile() {
      return null;
    }
    @Override
    public File getWorkingDirectory() {
      return null;
    }
  }
}