/*
 * 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.geode.distributed.internal.deadlock;

import java.io.Serializable;
import java.lang.management.LockInfo;
import java.lang.management.MonitorInfo;

import org.apache.geode.internal.concurrent.LI;

/**
 * This class is serializable version of the java 1.6 lock info class. It also holds a locality
 * field to identify the VM where the lock is held.
 * 
 *
 */
class LocalLockInfo implements Serializable {
  private static final long serialVersionUID = 1L;

  private final Serializable locatility;
  private final LI info;

  public LocalLockInfo(Serializable locatility, LockInfo sync) {
    super();
    this.locatility = locatility;
    // LockInfo and Monitor info aren't serializable, so copy the information from
    // them. For backwards compatibility, use the LI class which is used
    // in older versions of gemfire.
    if (sync instanceof MonitorInfo) {
      this.info = new LI(sync.getClassName(), sync.getIdentityHashCode(),
          ((MonitorInfo) sync).getLockedStackFrame());
    } else {
      this.info = new LI(sync.getClassName(), sync.getIdentityHashCode());
    }
  }

  public Serializable getLocality() {
    return locatility;
  }

  public LI getInfo() {
    return info;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((info == null) ? 0 : info.getClassName().hashCode());
    result = prime * result + ((info == null) ? 0 : info.getIdentityHashCode());
    result = prime * result + ((locatility == null) ? 0 : locatility.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (!(obj instanceof LocalLockInfo))
      return false;
    LocalLockInfo other = (LocalLockInfo) obj;
    if (info == null) {
      if (other.info != null)
        return false;
    } else if (!info.getClassName().equals(other.info.getClassName())) {
      return false;
    } else if (info.getIdentityHashCode() != other.info.getIdentityHashCode()) {
      return false;
    }
    if (locatility == null) {
      if (other.locatility != null)
        return false;
    } else if (!locatility.equals(other.locatility))
      return false;
    return true;
  }

  @Override
  public String toString() {
    return locatility + ":" + info;

  }
}
