/*
* 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 java.io.IOException;
/**
* Utilities for {@link BackOff}.
*
* <p><b>Note</b>: This is copied from Google API client library to avoid its dependency.
*/
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()}.
* </p>
*
* @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, IOException {
long backOffTime = backOff.nextBackOffMillis();
if (backOffTime == BackOff.STOP) {
return false;
}
sleeper.sleep(backOffTime);
return true;
}
private BackOffUtils() {
}
}