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package org.infinispan.xsite;

import jakarta.transaction.Transaction;

import org.infinispan.commands.tx.CommitCommand;
import org.infinispan.commands.tx.PrepareCommand;
import org.infinispan.commands.tx.RollbackCommand;
import org.infinispan.commands.write.ClearCommand;
import org.infinispan.commands.write.WriteCommand;
import org.infinispan.factories.scopes.Scope;
import org.infinispan.factories.scopes.Scopes;
import org.infinispan.interceptors.InvocationStage;
import org.infinispan.interceptors.SyncInvocationStage;
import org.infinispan.transaction.impl.AbstractCacheTransaction;

/**
 * A no-op implementation of {@link BackupSender}.
 * 
 * This class is used when cross-site replication is disabled.
 *
 * @author Pedro Ruivo
 * @since 10.0
 */
@Scope(value = Scopes.NAMED_CACHE)
public class NoOpBackupSender implements BackupSender {

   private static final NoOpBackupSender INSTANCE = new NoOpBackupSender();

   private NoOpBackupSender() {
   }

   public static NoOpBackupSender getInstance() {
      return INSTANCE;
   }

   @Override
   public InvocationStage backupPrepare(PrepareCommand command, AbstractCacheTransaction cacheTransaction,
         Transaction transaction) {
      return SyncInvocationStage.completedNullStage();
   }

   @Override
   public InvocationStage backupWrite(WriteCommand command, WriteCommand originalCommand) {
      return SyncInvocationStage.completedNullStage();
   }

   @Override
   public InvocationStage backupClear(ClearCommand command) {
      return SyncInvocationStage.completedNullStage();
   }

   @Override
   public InvocationStage backupCommit(CommitCommand command, Transaction transaction) {
      return SyncInvocationStage.completedNullStage();
   }

   @Override
   public InvocationStage backupRollback(RollbackCommand command, Transaction transaction) {
      return SyncInvocationStage.completedNullStage();
   }

   @Override
   public String toString() {
      return "NoOpBackupSender{}";
   }
}