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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.admin.remote;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.admin.GemFireMemberStatus;
import com.gemstone.gemfire.cache.CacheFactory;
import com.gemstone.gemfire.distributed.DistributedSystem;
import com.gemstone.gemfire.distributed.internal.DistributionManager;
import com.gemstone.gemfire.distributed.internal.membership.InternalDistributedMember;
import com.gemstone.gemfire.internal.cache.GemFireCacheImpl;

/**
 * A message that is sent to a particular distribution manager to get its
 * current {@link com.gemstone.gemfire.admin.GemFireMemberStatus}.
 * 
 * @author Harsh Khanna
 */
public class RefreshMemberSnapshotResponse extends AdminResponse {
  // instance variables
  GemFireMemberStatus snapshot;

  /**
   * Returns a FetchSysCfgResponse that will be returned to the
   * specified recipient. The message will contains a copy of the local
   * manager's config.
   */
  public static RefreshMemberSnapshotResponse create(DistributionManager dm,
      InternalDistributedMember recipient) {
    RefreshMemberSnapshotResponse m = new RefreshMemberSnapshotResponse();
    m.setRecipient(recipient);

    try {
      DistributedSystem sys = dm.getSystem();
      GemFireCacheImpl c = (GemFireCacheImpl)CacheFactory.getInstance(sys);
      m.snapshot = new GemFireMemberStatus(c);
    }
    catch (Exception ex) {
      m.snapshot = null;
    }
    return m;
  }

  /**
   * @return return the snapshot of Gemfire member vm
   */
  public GemFireMemberStatus getSnapshot() {
    return this.snapshot;
  }

  @Override
  public void toData(DataOutput out) throws IOException {
    super.toData(out);
    DataSerializer.writeObject(this.snapshot, out);
  }

  @Override
  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    super.fromData(in);
    this.snapshot = (GemFireMemberStatus)DataSerializer.readObject(in);
  }

  /**
   * Returns the DataSerializer fixed id for the class that implements this method.
   */
  public int getDSFID() {    
    return REFRESH_MEMBER_SNAP_RESPONSE;
  }


  @Override
  public String toString() {
    return "RefreshMemberSnapshotResponse from " + this.getRecipient()
        + " snapshot=" + this.snapshot;
  }
}