Adding back for backwards compatibility deprecated TracingKafkaConsum… (#2272)

spring-cloud-sleuth-instrumentation/src/main/java/org/springframework/cloud/sleuth/instrument/kafka/TracingKafkaConsumerFactory.java

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+/*
+ * Copyright 2013-2021 the original author or authors.
+ *
+ * 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
+ *
+ *      https://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.springframework.cloud.sleuth.instrument.kafka;
+
+import org.apache.kafka.clients.consumer.Consumer;
+import reactor.kafka.receiver.KafkaReceiver;
+import reactor.kafka.receiver.ReceiverOptions;
+import reactor.kafka.receiver.internals.ConsumerFactory;
+
+import org.springframework.beans.factory.BeanFactory;
+
+/**
+ * This decorates a Reactor Kafka {@link ConsumerFactory} to create decorated consumers of
+ * type {@link TracingKafkaConsumer}. This can be used by the {@link KafkaReceiver}
+ * factory methods to create instrumented receivers.
+ *
+ * @author Anders Clausen
+ * @author Flaviu Muresan
+ * @since 3.1.0
+ * @deprecated Please use {@link TracingKafkaReceiver} that leverages
+ * {@link ReactiveKafkaTracingPropagator}
+ */
+@Deprecated
+public class TracingKafkaConsumerFactory extends ConsumerFactory {
+
+	private final BeanFactory beanFactory;
+
+	public TracingKafkaConsumerFactory(BeanFactory beanFactory) {
+		super();
+		this.beanFactory = beanFactory;
+	}
+
+	@Override
+	public <K, V> Consumer<K, V> createConsumer(ReceiverOptions<K, V> receiverOptions) {
+		return new TracingKafkaConsumer<>(super.createConsumer(receiverOptions), beanFactory);
+	}
+
+}