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OpenTracing Instrumentation for Redisson

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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.redis.redisson;

import static io.opentracing.contrib.redis.common.TracingHelper.nullable;

import io.opentracing.Span;
import java.util.Comparator;
import java.util.stream.Stream;
import org.redisson.api.RPriorityBlockingDeque;

public class TracingRPriorityBlockingDeque extends TracingRBlockingDeque implements
    RPriorityBlockingDeque {
  private final RPriorityBlockingDeque deque;
  private final TracingRedissonHelper tracingRedissonHelper;

  public TracingRPriorityBlockingDeque(RPriorityBlockingDeque deque,
      TracingRedissonHelper tracingRedissonHelper) {
    super(deque, tracingRedissonHelper);
    this.deque = deque;
    this.tracingRedissonHelper = tracingRedissonHelper;
  }

  @Override
  public Comparator comparator() {
    return deque.comparator();
  }

  @Override
  public boolean trySetComparator(Comparator comparator) {
    Span span = tracingRedissonHelper.buildSpan("trySetComparator", deque);
    span.setTag("comparator", nullable(comparator));
    return tracingRedissonHelper.decorate(span, () -> deque.trySetComparator(comparator));
  }

  @Override
  public Stream descendingStream() {
    Span span = tracingRedissonHelper.buildSpan("descendingStream", deque);
    return tracingRedissonHelper.decorate(span, deque::descendingStream);
  }
}