/
TracingKafkaProducer.java
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/
TracingKafkaProducer.java
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/*
* Copyright 2017-2018 The OpenTracing 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
*
* 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 io.opentracing.contrib.kafka;
import io.opentracing.Scope;
import io.opentracing.Tracer;
import io.opentracing.util.GlobalTracer;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.function.BiFunction;
import org.apache.kafka.clients.consumer.OffsetAndMetadata;
import org.apache.kafka.clients.producer.Callback;
import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.clients.producer.RecordMetadata;
import org.apache.kafka.common.Metric;
import org.apache.kafka.common.MetricName;
import org.apache.kafka.common.PartitionInfo;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.errors.ProducerFencedException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TracingKafkaProducer<K, V> implements Producer<K, V> {
private static final Logger logger = LoggerFactory.getLogger(TracingKafkaProducer.class);
private Producer<K, V> producer;
private final Tracer tracer;
private final BiFunction<String, ProducerRecord, String> producerSpanNameProvider;
public TracingKafkaProducer(Producer<K, V> producer, Tracer tracer) {
this.producer = producer;
this.tracer = tracer;
this.producerSpanNameProvider = ClientSpanNameProvider.PRODUCER_OPERATION_NAME;
}
/**
* GlobalTracer is used to get tracer
*/
public TracingKafkaProducer(Producer<K, V> producer) {
this(producer, GlobalTracer.get());
}
public TracingKafkaProducer(Producer<K, V> producer, Tracer tracer,
BiFunction<String, ProducerRecord, String> producerSpanNameProvider) {
this.producer = producer;
this.tracer = tracer;
this.producerSpanNameProvider = (producerSpanNameProvider == null)
? ClientSpanNameProvider.PRODUCER_OPERATION_NAME
: producerSpanNameProvider;
}
/**
* GlobalTracer is used to get tracer
*/
public TracingKafkaProducer(Producer<K, V> producer,
BiFunction<String, ProducerRecord, String> producerSpanNameProvider) {
this(producer, GlobalTracer.get(), producerSpanNameProvider);
}
@Override
public void initTransactions() {
producer.initTransactions();
}
@Override
public void beginTransaction() throws ProducerFencedException {
producer.beginTransaction();
}
@Override
public void sendOffsetsToTransaction(Map<TopicPartition, OffsetAndMetadata> map, String s)
throws ProducerFencedException {
producer.sendOffsetsToTransaction(map, s);
}
@Override
public void commitTransaction() throws ProducerFencedException {
producer.commitTransaction();
}
@Override
public void abortTransaction() throws ProducerFencedException {
producer.abortTransaction();
}
@Override
public Future<RecordMetadata> send(ProducerRecord<K, V> record) {
return send(record, null);
}
@Override
public Future<RecordMetadata> send(ProducerRecord<K, V> record, Callback callback) {
/*
// Create wrappedRecord because headers can be read only in record (if record is sent second time)
ProducerRecord<K, V> wrappedRecord = new ProducerRecord<>(record.topic(),
record.partition(),
record.timestamp(),
record.key(),
record.value(),
record.headers());
*/
try (Scope scope = TracingKafkaUtils
.buildAndInjectSpan(record, tracer, producerSpanNameProvider)) {
Callback wrappedCallback = new TracingCallback(callback, scope);
return producer.send(record, wrappedCallback);
}
}
@Override
public void flush() {
producer.flush();
}
@Override
public List<PartitionInfo> partitionsFor(String topic) {
return producer.partitionsFor(topic);
}
@Override
public Map<MetricName, ? extends Metric> metrics() {
return producer.metrics();
}
@Override
public void close() {
producer.close();
}
@Override
public void close(long timeout, TimeUnit timeUnit) {
producer.close(timeout, timeUnit);
}
}