code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * 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.
   */
  
  package net.openhft.chronicle.map.impl.stage.replication;
  
  import net.openhft.chronicle.hash.impl.stage.entry.SegmentStages;
  import net.openhft.chronicle.hash.impl.stage.hash.CheckOnEachPublicOperation;
  import net.openhft.chronicle.hash.replication.RemoteOperationContext;
  import net.openhft.chronicle.map.impl.ReplicatedChronicleMapHolder;
  import net.openhft.chronicle.map.impl.stage.entry.ReplicatedMapEntryStages;
  import net.openhft.sg.Stage;
  import net.openhft.sg.StageRef;
  import net.openhft.sg.Staged;
  
  @Staged
  public abstract class ReplicationUpdate<K> implements RemoteOperationContext<K> {
      @Stage("ReplicationUpdate")
      public byte innerRemoteIdentifier = (byte) 0;
      @Stage("ReplicationUpdate")
      public long innerRemoteTimestamp;
      @Stage("ReplicationUpdate")
      public byte innerRemoteNodeIdentifier;
      @StageRef
      SegmentStages s;
      @StageRef
      ReplicatedMapEntryStages<K, ?> e;
      @StageRef
      ReplicatedChronicleMapHolder<?, ?, ?> mh;
      @StageRef
      CheckOnEachPublicOperation checkOnEachPublicOperation;
  
      public abstract boolean replicationUpdateInit();
  
      public void initReplicationUpdate(byte identifier, long timestamp, byte remoteNodeIdentifier) {
          innerRemoteTimestamp = timestamp;
          if (identifier == 0)
              throw new IllegalStateException(mh.h().toIdentityString() + ": identifier can't be 0");
          innerRemoteIdentifier = identifier;
          if (remoteNodeIdentifier == 0) {
              throw new IllegalStateException(
                      mh.h().toIdentityString() + ": remote node identifier can't be 0");
          }
          innerRemoteNodeIdentifier = remoteNodeIdentifier;
      }
  
      public void dropChange() {
          mh.m().dropChange(s.tierIndex, e.pos);
      }
  
      public void dropChangeFor(byte remoteIdentifier) {
          mh.m().dropChangeFor(s.tierIndex, e.pos, remoteIdentifier);
      }
  
      public void moveChange(long oldTierIndex, long oldPos, long newPos) {
          mh.m().moveChange(oldTierIndex, oldPos, s.tierIndex, newPos);
      }
  
      public void updateChange() {
          if (!replicationUpdateInit()) {
              raiseChange();
          }
      }
  
      public void raiseChange() {
          mh.m().raiseChange(s.tierIndex, e.pos);
      }
  
      public void raiseChangeFor(byte remoteIdentifier) {
          mh.m().raiseChangeFor(s.tierIndex, e.pos, remoteIdentifier);
      }
  
      public void raiseChangeForAllExcept(byte remoteIdentifier) {
          mh.m().raiseChangeForAllExcept(s.tierIndex, e.pos, remoteIdentifier);
      }
  
      public boolean changed() {
          return mh.m().isChanged(s.tierIndex, e.pos);
      }
  
      @Override
      public long remoteTimestamp() {
          checkOnEachPublicOperation.checkOnEachPublicOperation();
          return innerRemoteTimestamp;
      }
  
      @Override
      public byte remoteIdentifier() {
          checkOnEachPublicOperation.checkOnEachPublicOperation();
          return innerRemoteIdentifier;
      }
  
      @Override
      public byte remoteNodeIdentifier() {
          checkOnEachPublicOperation.checkOnEachPublicOperation();
          return innerRemoteNodeIdentifier;
      }
  
      @Override
      public byte currentNodeIdentifier() {
          return mh.m().identifier();
      }
  }
  