geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/command/Destroy70.java

/*
 * 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.internal.cache.tier.sockets.command;

import java.io.IOException;

import org.apache.geode.annotations.Immutable;
import org.apache.geode.cache.client.internal.DestroyOp;
import org.apache.geode.internal.cache.PartitionedRegion;
import org.apache.geode.internal.cache.tier.Command;
import org.apache.geode.internal.cache.tier.MessageType;
import org.apache.geode.internal.cache.tier.sockets.Message;
import org.apache.geode.internal.cache.tier.sockets.ServerConnection;
import org.apache.geode.internal.cache.versions.VersionTag;

public class Destroy70 extends Destroy65 {
  @Immutable
  private static final Destroy70 singleton = new Destroy70();

  public static Command getCommand() {
    return singleton;
  }

  private Destroy70() {}

  @Override
  protected void writeReplyWithRefreshMetadata(Message origMsg, ServerConnection servConn,
      PartitionedRegion pr, boolean entryNotFoundForRemove, byte nwHop, VersionTag versionTag)
      throws IOException {
    Message replyMsg = servConn.getReplyMessage();
    servConn.getCache().getCancelCriterion().checkCancelInProgress(null);
    replyMsg.setMessageType(MessageType.REPLY);
    int flags = 0;
    int numParts = 3;
    if (versionTag != null) {
      flags |= DestroyOp.HAS_VERSION_TAG;
      numParts++;
    }
    flags |= DestroyOp.HAS_ENTRY_NOT_FOUND_PART;
    // if (logger.isDebugEnabled()) {
    // logger.fine("writing response with metadata and " + numParts + " parts");
    // }
    replyMsg.setNumberOfParts(numParts);
    replyMsg.setTransactionId(origMsg.getTransactionId());
    replyMsg.addIntPart(flags);
    if (versionTag != null) {
      replyMsg.addObjPart(versionTag);
    }
    replyMsg.addBytesPart(new byte[] {pr.getMetadataVersion(), nwHop});
    replyMsg.addIntPart(entryNotFoundForRemove ? 1 : 0);
    pr.getPrStats().incPRMetaDataSentCount();
    replyMsg.send(servConn);
    if (logger.isTraceEnabled()) {
      logger.trace("{}: rpl with REFRESH_METADATA tx: {}", servConn.getName(),
          origMsg.getTransactionId());
    }
  }

  @Override
  protected void writeReply(Message origMsg, ServerConnection servConn, boolean entryNotFound,
      VersionTag versionTag) throws IOException {
    if (logger.isDebugEnabled()) {
      logger.debug("Destroy70.writeReply(entryNotFound={}, tag={})", entryNotFound, versionTag);
    }
    Message replyMsg = servConn.getReplyMessage();
    servConn.getCache().getCancelCriterion().checkCancelInProgress(null);
    replyMsg.setMessageType(MessageType.REPLY);
    int flags = 0;
    int numParts = 3;
    if (versionTag != null) {
      flags |= DestroyOp.HAS_VERSION_TAG;
      numParts++;
    }
    flags |= DestroyOp.HAS_ENTRY_NOT_FOUND_PART;
    // if (logger.isDebugEnabled()) {
    // logger.fine("writing response with 1-byte metadata and " + numParts + " parts");
    // }
    replyMsg.setNumberOfParts(numParts);
    replyMsg.setTransactionId(origMsg.getTransactionId());
    replyMsg.addIntPart(flags);
    if (versionTag != null) {
      // if (logger.isDebugEnabled()) {
      // logger.fine("wrote version tag in response: " + versionTag);
      // }
      replyMsg.addObjPart(versionTag);
      // } else {
      // if (logger.isDebugEnabled()) {
      // logger.fine("response has no version tag");
      // }
    }
    replyMsg.addBytesPart(okBytes()); // make old single-hop code happy by puting byte[]{0} here
    replyMsg.addIntPart(entryNotFound ? 1 : 0);
    replyMsg.send(servConn);
    if (logger.isTraceEnabled()) {
      logger.trace("{}: rpl tx: {} parts={}", servConn.getName(), origMsg.getTransactionId(),
          replyMsg.getNumberOfParts());
    }
  }
}