io.druid.indexing.common.RetryPolicy Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.indexing.common;
import com.metamx.emitter.EmittingLogger;
import org.joda.time.Duration;
/**
*/
public class RetryPolicy
{
private static final EmittingLogger log = new EmittingLogger(RetryPolicy.class);
private final long maxNumRetries;
private final Duration maxRetryDelay;
private Duration currRetryDelay;
private int retryCount;
public RetryPolicy(RetryPolicyConfig config)
{
this.maxNumRetries = config.getMaxRetryCount();
this.maxRetryDelay = config.getMaxWait().toStandardDuration();
this.currRetryDelay = config.getMinWait().toStandardDuration();
this.retryCount = 0;
}
public Duration getAndIncrementRetryDelay()
{
if (hasExceededRetryThreshold()) {
return null;
}
Duration retVal = currRetryDelay;
currRetryDelay = new Duration(Math.min(currRetryDelay.getMillis() * 2, maxRetryDelay.getMillis()));
++retryCount;
return retVal;
}
public boolean hasExceededRetryThreshold()
{
return retryCount >= maxNumRetries;
}
}