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.beam.sdk.util;
  
  import org.apache.beam.sdk.annotations.Internal;
  
  /** Utilities for {@link BackOff}. */
  @Internal
  public final class BackOffUtils {
  
    /**
     * Runs the next iteration of the back-off policy, and returns whether to continue to retry the
     * operation.
     *
     * <p>If {@code true}, it will call {@link Sleeper#sleep(long)} with the specified number of
     * milliseconds from {@link BackOff#nextBackOffMillis()}.
     *
     * @param sleeper sleeper
     * @param backOff back-off policy
     * @return whether to continue to back off; in other words, whether {@link
     *     BackOff#nextBackOffMillis()} did not return {@link BackOff#STOP}
     * @throws InterruptedException if any thread has interrupted the current thread
     */
    public static boolean next(Sleeper sleeper, BackOff backOff) throws InterruptedException {
      long backOffTime = backOff.nextBackOffMillis();
      if (backOffTime == BackOff.STOP) {
        return false;
      }
      sleeper.sleep(backOffTime);
      return true;
    }
  
    private BackOffUtils() {}
  }
  