content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.streams.processor.internals;
  
  import org.apache.kafka.clients.consumer.Consumer;
  import org.apache.kafka.common.Metric;
  import org.apache.kafka.common.MetricName;
  
  import java.util.Map;
  import java.util.function.Supplier;
  
  public class StreamThreadTotalBlockedTime {
      private final Consumer<?, ?> consumer;
      private final Consumer<?, ?> restoreConsumer;
      private final Supplier<Double> producerTotalBlockedTime;
  
      StreamThreadTotalBlockedTime(
          final Consumer<?, ?> consumer,
          final Consumer<?, ?> restoreConsumer,
          final Supplier<Double> producerTotalBlockedTime) {
          this.consumer = consumer;
          this.restoreConsumer = restoreConsumer;
          this.producerTotalBlockedTime = producerTotalBlockedTime;
      }
  
      private double metricValue(
          final Map<MetricName, ? extends Metric> metrics,
          final String name) {
          return metrics.keySet().stream()
              .filter(n -> n.name().equals(name))
              .findFirst()
              .map(n -> (Double) metrics.get(n).metricValue())
              .orElse(0.0);
      }
  
      public double compute() {
          return metricValue(consumer.metrics(), "io-wait-time-ns-total")
              + metricValue(consumer.metrics(), "io-time-ns-total")
              + metricValue(consumer.metrics(), "committed-time-ns-total")
              + metricValue(consumer.metrics(), "commit-sync-time-ns-total")
              + metricValue(restoreConsumer.metrics(), "io-wait-time-ns-total")
              + metricValue(restoreConsumer.metrics(), "io-time-ns-total")
              + producerTotalBlockedTime.get();
      }
  }
  