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.starter.rb.configuration;
  
  import java.util.Optional;
  import java.util.UUID;
  import org.springframework.cloud.stream.binder.PartitionKeyExtractorStrategy;
  import org.springframework.messaging.Message;
  
  public class ActivitiAuditProducerPartitionKeyExtractor implements PartitionKeyExtractorStrategy {
  
      public static final String ACTIVITI_CLOUD_MESSAGING_PARTITION_COUNT = "activiti.cloud.messaging.partition-count";
      public static final String ACTIVITI_CLOUD_MESSAGING_PARTITIONED = "activiti.cloud.messaging.partitioned";
      public static final String ACTIVITI_AUDIT_PRODUCER_PATITION_KEY_EXTRACTOR_NAME =
          "activitiAuditProducerPartitionKeyExtractor";
      public static final String ROOT_PROCESS_INSTANCE_ID = "rootProcessInstanceId";
  
      @Override
      public Object extractKey(Message<?> message) {
          // Use processInstanceId header to route message between partitions or use random hash value if missing
          String rootProcessInstance = message.getHeaders().get(ROOT_PROCESS_INSTANCE_ID, String.class);
  
          return Optional.ofNullable(rootProcessInstance).orElse(UUID.randomUUID().toString());
      }
  }
  