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/*
 * Copyright 2017-2019 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.spring;

import io.opentracing.Tracer;
import io.opentracing.contrib.kafka.ClientSpanNameProvider;
import io.opentracing.contrib.kafka.TracingKafkaConsumer;
import io.opentracing.util.GlobalTracer;
import java.util.Map;
import java.util.function.BiFunction;
import org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.common.serialization.Deserializer;
import org.springframework.kafka.core.ConsumerFactory;

public class TracingConsumerFactory implements ConsumerFactory {

  private final ConsumerFactory consumerFactory;
  private final Tracer tracer;
  private final BiFunction consumerSpanNameProvider;

  public TracingConsumerFactory(ConsumerFactory consumerFactory, Tracer tracer) {
    this.tracer = tracer;
    this.consumerFactory = consumerFactory;
    this.consumerSpanNameProvider = ClientSpanNameProvider.CONSUMER_OPERATION_NAME;
  }

  /**
   * GlobalTracer is used to get tracer
   */
  public TracingConsumerFactory(ConsumerFactory consumerFactory) {
    this(consumerFactory, GlobalTracer.get());
  }

  public TracingConsumerFactory(ConsumerFactory consumerFactory, Tracer tracer,
      BiFunction consumerSpanNameProvider) {
    this.tracer = tracer;
    this.consumerFactory = consumerFactory;
    this.consumerSpanNameProvider = (consumerSpanNameProvider == null)
        ? ClientSpanNameProvider.CONSUMER_OPERATION_NAME
        : consumerSpanNameProvider;
  }

  /**
   * GlobalTracer is used to get tracer
   */
  public TracingConsumerFactory(ConsumerFactory consumerFactory,
      BiFunction consumerSpanNameProvider) {
    this(consumerFactory, GlobalTracer.get(), consumerSpanNameProvider);
  }

  @Override
  public Consumer createConsumer() {
    return new TracingKafkaConsumer<>(consumerFactory.createConsumer(), tracer,
        consumerSpanNameProvider);
  }

  @Override
  public Consumer createConsumer(String clientIdSuffix) {
    return new TracingKafkaConsumer<>(consumerFactory.createConsumer(clientIdSuffix), tracer,
        consumerSpanNameProvider);
  }

  @Override
  public Consumer createConsumer(String groupId, String clientIdSuffix) {
    return new TracingKafkaConsumer<>(consumerFactory.createConsumer(groupId, clientIdSuffix),
        tracer, consumerSpanNameProvider);
  }

  @Override
  public Consumer createConsumer(String groupId, String clientIdPrefix, String clientIdSuffix) {
    return new TracingKafkaConsumer<>(consumerFactory.createConsumer(groupId, clientIdPrefix, clientIdSuffix),
            tracer, consumerSpanNameProvider);
  }

  @Override
  public boolean isAutoCommit() {
    return consumerFactory.isAutoCommit();
  }

  @Override
  public Map getConfigurationProperties() {
    return consumerFactory.getConfigurationProperties();
  }

  @Override
  public Deserializer getKeyDeserializer() {
    return consumerFactory.getKeyDeserializer();
  }

  @Override
  public Deserializer getValueDeserializer() {
    return consumerFactory.getValueDeserializer();
  }
}