geode-core/src/main/java/org/apache/geode/internal/cache/TransactionMessage.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;

import org.apache.geode.distributed.internal.DistributionMessage;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;

/**
 * Messages that carry transaction information will implement this interface
 *
 */
public interface TransactionMessage {
  /**
   * Returns the transaction id on the sender this message belongs to
   *
   * @return the unique transaction id per sender
   */
  int getTXUniqId();

  /**
   * Returns the member id of the originating member for this transaction
   *
   * @return memberId of tx originator
   */
  InternalDistributedMember getMemberToMasqueradeAs();


  /**
   * We do not want all the messages to start a remote transaction. e.g. SizeMessage. If this method
   * returns true, a transaction will be created if none exists
   *
   * @return true if this message can start a remote transaction, false otherwise
   */
  boolean canStartRemoteTransaction();

  /**
   * @see DistributionMessage#getSender()
   * @return the sender of this message
   */
  InternalDistributedMember getSender();

  /**
   * Gets the MemberId of the originating member of the transaction that this message is a part of.
   *
   * @return the memberId of the client that started this transaction, or null if not from client
   */
  InternalDistributedMember getTXOriginatorClient();


  /**
   * Messages that do not want to participate in transactions return false. e.g.
   * <code>ManageBucketMessage</code>
   */
  boolean canParticipateInTransaction();

  /**
   * Messages that participate in distributed transaction return true, others return false
   */
  boolean isTransactionDistributed();
}