content: /*
   * Copyright 2017-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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 org.activiti.cloud.services.messages.events.support;
  
  import org.activiti.cloud.services.events.ProcessEngineChannels;
  import org.activiti.cloud.services.messages.events.MessageEventHeaders;
  import org.springframework.cloud.stream.config.BindingServiceProperties;
  import org.springframework.messaging.Message;
  import org.springframework.messaging.MessageChannel;
  import org.springframework.messaging.support.MessageBuilder;
  import org.springframework.transaction.support.TransactionSynchronizationManager;
  
  public class MessageEventsDispatcher {
  
      private final MessageChannel messageEvents;
      private final BindingServiceProperties bindingServiceProperties;
  
      public MessageEventsDispatcher(MessageChannel messageEvents, BindingServiceProperties bindingServiceProperties) {
          this.messageEvents = messageEvents;
          this.bindingServiceProperties = bindingServiceProperties;
      }
  
      public void dispatch(Message<?> message) {
          if (!TransactionSynchronizationManager.isSynchronizationActive()) {
              throw new IllegalStateException("requires active transaction synchronization");
          }
  
          String messageEventOutputDestination = bindingServiceProperties.getBindingDestination(
              ProcessEngineChannels.COMMAND_CONSUMER
          );
  
          Message<?> dispatchMessage = MessageBuilder
              .fromMessage(message)
              .setHeader(MessageEventHeaders.MESSAGE_EVENT_OUTPUT_DESTINATION, messageEventOutputDestination)
              .build();
  
          TransactionSynchronizationManager.registerSynchronization(
              new MessageSenderTransactionSynchronization(dispatchMessage, messageEvents)
          );
      }
  }
  