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.input;
  
  import net.openhft.chronicle.bytes.Bytes;
  import net.openhft.chronicle.hash.Data;
  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.Replica;
  import net.openhft.chronicle.map.impl.ReplicatedChronicleMapHolder;
  import net.openhft.chronicle.map.impl.stage.data.DummyValueZeroData;
  import net.openhft.chronicle.map.impl.stage.query.ReplicatedMapQuery;
  import net.openhft.chronicle.map.impl.stage.replication.ReplicationUpdate;
  import net.openhft.chronicle.map.replication.MapRemoteQueryContext;
  import net.openhft.sg.StageRef;
  import net.openhft.sg.Staged;
  
  @Staged
  public abstract class ReplicatedInput<K, V, R> implements RemoteOperationContext<K>,
          MapRemoteQueryContext<K, V, R>, Replica.QueryContext<K, V> {
  
      @StageRef
      CheckOnEachPublicOperation checkOnEachPublicOperation;
      @StageRef
      ReplicatedChronicleMapHolder<K, V, R> mh;
      @StageRef
      ReplicationUpdate<K> ru;
      @StageRef
      ReplicatedMapQuery<K, V, ?> q;
      @StageRef
      SegmentStages s;
      @StageRef
      DummyValueZeroData<V> dummyValue;
  
      @Override
      public Data<V> dummyZeroValue() {
          checkOnEachPublicOperation.checkOnEachPublicOperation();
          return dummyValue;
      }
  
      public void processReplicatedEvent(byte remoteNodeIdentifier, Bytes replicatedInputBytes) {
          long timestamp = replicatedInputBytes.readStopBit();
          byte identifier = replicatedInputBytes.readByte();
          ru.initReplicationUpdate(identifier, timestamp, remoteNodeIdentifier);
  
          boolean isDeleted = replicatedInputBytes.readBoolean();
          long keySize = mh.m().keySizeMarshaller.readSize(replicatedInputBytes);
          long keyOffset = replicatedInputBytes.readPosition();
  
          q.initInputKey(q.getInputKeyBytesAsData(replicatedInputBytes, keyOffset, keySize));
          replicatedInputBytes.readSkip(keySize);
          if (isDeleted) {
              s.innerUpdateLock.lock();
              mh.m().remoteOperations.remove(this);
          } else {
              long valueSize = mh.m().valueSizeMarshaller.readSize(replicatedInputBytes);
              long valueOffset = replicatedInputBytes.readPosition();
              Data<V> value = q.wrapValueBytesAsData(replicatedInputBytes, valueOffset, valueSize);
              replicatedInputBytes.readSkip(valueSize);
              s.innerWriteLock.lock();
              mh.m().remoteOperations.put(this, value);
          }
      }
  
      @Override
      public void remotePut(
              Data<V> newValue,
              byte remoteEntryIdentifier, long remoteEntryTimestamp, byte remoteNodeIdentifier) {
          ru.initReplicationUpdate(remoteEntryIdentifier, remoteEntryTimestamp, remoteNodeIdentifier);
          s.innerUpdateLock.lock();
          mh.m().remoteOperations.put(this, newValue);
      }
  
      @Override
      public void remoteRemove(
              byte remoteEntryIdentifier, long remoteEntryTimestamp, byte remoteNodeIdentifier) {
          ru.initReplicationUpdate(remoteEntryIdentifier, remoteEntryTimestamp, remoteNodeIdentifier);
          s.innerWriteLock.lock();
          mh.m().remoteOperations.remove(this);
      }
  }
  