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.core.correlation;
  
  import static org.activiti.cloud.services.messages.core.integration.MessageEventHeaders.*;
  
  import org.springframework.messaging.Message;
  import org.springframework.messaging.MessageHeaders;
  
  public class Correlations {
  
      public static String getCorrelationId(Message<?> message) {
          MessageHeaders headers = message.getHeaders();
          String appName = headers.get(APP_NAME, String.class);
          String messageEventName = headers.get(MESSAGE_EVENT_NAME, String.class);
          String messageCorrelationKey = headers.get(MESSAGE_EVENT_CORRELATION_KEY, String.class);
  
          StringBuilder builder = new StringBuilder();
          builder.append(appName).append(":").append(messageEventName);
  
          if (messageCorrelationKey != null) {
              builder.append(":").append(messageCorrelationKey);
          }
  
          return builder.toString();
      }
  }
  