com.gemstone.gemfire.internal.admin.remote.MissingPersistentIDsRequest Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of gemfire-core Show documentation
SnappyData store based off Pivotal GemFireXD
The newest version!
/*
 * 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.IOException;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;

import com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.cache.CacheFactory;
import com.gemstone.gemfire.cache.persistence.PersistentID;
import com.gemstone.gemfire.distributed.internal.DM;
import com.gemstone.gemfire.distributed.internal.DistributionManager;
import com.gemstone.gemfire.distributed.internal.DistributionMessage;
import com.gemstone.gemfire.distributed.internal.ReplyException;
import com.gemstone.gemfire.distributed.internal.ReplyProcessor21;
import com.gemstone.gemfire.internal.cache.GemFireCacheImpl;
import com.gemstone.gemfire.internal.cache.persistence.PersistentMemberID;
import com.gemstone.gemfire.internal.cache.persistence.PersistentMemberManager;
import com.gemstone.gemfire.internal.cache.persistence.PersistentMemberPattern;

/**
 * A request to all members for any persistent members that
 * they are waiting for.
 * @author dsmith
 * TODO prpersist - This extends AdminRequest, but it doesn't
 * work with most of the admin paradigm, which is a request response
 * to a single member. Maybe we need to a new base class.
 */
public class MissingPersistentIDsRequest extends AdminRequest {
  
  public static Set send(DM dm) {
    Set recipients = dm.getOtherDistributionManagerIds();
    
    MissingPersistentIDsRequest request = new MissingPersistentIDsRequest();
    
    request.setRecipients(recipients);
    
    MissingPersistentIDProcessor replyProcessor = new MissingPersistentIDProcessor(dm, recipients);
    request.msgId = replyProcessor.getProcessorId();
    dm.putOutgoing(request);
    try {
      replyProcessor.waitForReplies();
    } catch (ReplyException e) {
      if(!(e.getCause() instanceof CancelException)) {
        e.handleAsUnexpected();
      }
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    Set results = replyProcessor.missing;
    Set existing = replyProcessor.existing;
    
    
    MissingPersistentIDsResponse localResponse= (MissingPersistentIDsResponse) request.createResponse((DistributionManager)dm);
    results.addAll(localResponse.getMissingIds());
    existing.addAll(localResponse.getLocalIds());
    
    results.removeAll(existing);
    return results;
  }

  @Override
  protected AdminResponse createResponse(DistributionManager dm) {
    Set missingIds = new HashSet();
    Set localPatterns = new HashSet();
    GemFireCacheImpl cache = GemFireCacheImpl.getInstance();
    if(cache != null && !cache.isClosed()) {
      PersistentMemberManager mm = cache.getPersistentMemberManager();
      Map> waitingRegions = mm.getWaitingRegions();
      for(Map.Entry> entry: waitingRegions.entrySet()) {
        for(PersistentMemberID id : entry.getValue()) {
          missingIds.add(new PersistentMemberPattern(id));
        }
      }
      Set localIds = mm.getPersistentIDs();
      for(PersistentMemberID id : localIds) {
        localPatterns.add(new PersistentMemberPattern(id));
      }
    }
    return new MissingPersistentIDsResponse(missingIds, localPatterns, this.getSender());
  }
  
  

  @Override
  public void fromData(DataInput in) throws IOException, ClassNotFoundException {
    super.fromData(in);
  }

  @Override
  protected Object clone() throws CloneNotSupportedException {
    // TODO Auto-generated method stub
    return super.clone();
  }

  public int getDSFID() {
    return MISSING_PERSISTENT_IDS_REQUEST;
  }
  
  private static class MissingPersistentIDProcessor extends AdminMultipleReplyProcessor {
    Set missing = Collections.synchronizedSet(new TreeSet());
    Set existing = Collections.synchronizedSet(new TreeSet());

    /**
     * @param dm
     * @param recipients
     */
    public MissingPersistentIDProcessor(DM dm, Set recipients) {
      super(dm, recipients);
    }

    @Override
    protected void process(DistributionMessage msg, boolean warn) {
      if(msg instanceof MissingPersistentIDsResponse) {
        missing.addAll(((MissingPersistentIDsResponse)msg).getMissingIds());
        existing.addAll(((MissingPersistentIDsResponse)msg).getLocalIds());
      }
      super.process(msg, warn);
    }
  }
}