Mark TracingConsumerInterceptor and TracingProducerInterceptor as deprecated

Co-authored-by: trask <[email protected]>

Author: Copilot

instrumentation/kafka/kafka-clients/kafka-clients-2.6/library/src/main/java/io/opentelemetry/instrumentation/kafkaclients/v2_6/TracingConsumerInterceptor.java

@@ -26,7 +26,12 @@
  * A ConsumerInterceptor that adds tracing capability. Add this interceptor's class name or class
  * via ConsumerConfig.INTERCEPTOR_CLASSES_CONFIG property to your Consumer's properties to get it
  * instantiated and used. See more details on ConsumerInterceptor usage in its Javadoc.
+ *
+ * @deprecated Use {@link OpenTelemetryConsumerInterceptor} instead. This class uses {@link
+ *     GlobalOpenTelemetry} and is not configurable. The new class allows you to pass a configured
+ *     {@link KafkaTelemetry} instance.
  */
+@Deprecated
 public class TracingConsumerInterceptor<K, V> implements ConsumerInterceptor<K, V> {
 
   private static final KafkaTelemetry telemetry =

instrumentation/kafka/kafka-clients/kafka-clients-2.6/library/src/main/java/io/opentelemetry/instrumentation/kafkaclients/v2_6/TracingProducerInterceptor.java

@@ -22,7 +22,12 @@
  * A ProducerInterceptor that adds tracing capability. Add this interceptor's class name or class
  * via ProducerConfig.INTERCEPTOR_CLASSES_CONFIG property to your Producer's properties to get it
  * instantiated and used. See more details on ProducerInterceptor usage in its Javadoc.
+ *
+ * @deprecated Use {@link OpenTelemetryProducerInterceptor} instead. This class uses {@link
+ *     GlobalOpenTelemetry} and is not configurable. The new class allows you to pass a configured
+ *     {@link KafkaTelemetry} instance.
  */
+@Deprecated
 public class TracingProducerInterceptor<K, V> implements ProducerInterceptor<K, V> {
 
   private static final KafkaTelemetry telemetry =