com.ibm.mqlight.api.impl.endpoint.EndpointServiceImpl Maven / Gradle / Ivy
/**
* 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 com.ibm.mqlight.api.impl.endpoint;
import com.ibm.mqlight.api.endpoint.EndpointService;
import com.ibm.mqlight.api.logging.Logger;
import com.ibm.mqlight.api.logging.LoggerFactory;
public abstract class EndpointServiceImpl implements EndpointService {
private static final Logger logger = LoggerFactory.getLogger(EndpointServiceImpl.class);
protected long calculateDelay(int retryCount) {
final String methodName = "calculateDelay";
logger.entry(this, methodName, retryCount);
double upperBound = 1 << (retryCount < 9 ? retryCount : 8);
double lowerBound = 0.75 * upperBound;
double jitter = Math.random() * (0.25 * upperBound);
double interval = Math.min(60000, (lowerBound + jitter) * 1000);
long result = Math.round(interval);
logger.exit(this, methodName, result);
return result;
}
}