content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.javaagent.instrumentation.rabbitmq;
  
  import static java.util.Collections.emptyList;
  import static java.util.Collections.singletonList;
  
  import io.opentelemetry.instrumentation.api.incubator.semconv.messaging.MessagingAttributesGetter;
  import java.util.List;
  import java.util.Map;
  import javax.annotation.Nullable;
  
  enum RabbitDeliveryAttributesGetter implements MessagingAttributesGetter<DeliveryRequest, Void> {
    INSTANCE;
  
    @Override
    public String getSystem(DeliveryRequest request) {
      return "rabbitmq";
    }
  
    @Nullable
    @Override
    public String getDestination(DeliveryRequest request) {
      if (request.getEnvelope() != null) {
        return normalizeExchangeName(request.getEnvelope().getExchange());
      } else {
        return null;
      }
    }
  
    @Nullable
    @Override
    public String getDestinationTemplate(DeliveryRequest request) {
      return null;
    }
  
    private static String normalizeExchangeName(String exchange) {
      return exchange == null || exchange.isEmpty() ? "<default>" : exchange;
    }
  
    @Override
    public boolean isTemporaryDestination(DeliveryRequest request) {
      return false;
    }
  
    @Override
    public boolean isAnonymousDestination(DeliveryRequest request) {
      return false;
    }
  
    @Nullable
    @Override
    public String getConversationId(DeliveryRequest request) {
      return null;
    }
  
    @Nullable
    @Override
    public Long getMessageBodySize(DeliveryRequest request) {
      if (request.getBody() != null) {
        return (long) request.getBody().length;
      }
      return null;
    }
  
    @Nullable
    @Override
    public Long getMessageEnvelopeSize(DeliveryRequest request) {
      return null;
    }
  
    @Nullable
    @Override
    public String getMessageId(DeliveryRequest request, @Nullable Void unused) {
      return null;
    }
  
    @Nullable
    @Override
    public String getClientId(DeliveryRequest request) {
      return null;
    }
  
    @Nullable
    @Override
    public Long getBatchMessageCount(DeliveryRequest request, @Nullable Void unused) {
      return null;
    }
  
    @Override
    public List<String> getMessageHeader(DeliveryRequest request, String name) {
      Map<String, Object> headers = request.getProperties().getHeaders();
      if (headers == null) {
        return emptyList();
      }
      Object value = headers.get(name);
      if (value == null) {
        return emptyList();
      }
      return singletonList(value.toString());
    }
  }
  