/**
* 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.hadoop.yarn.server.applicationhistoryservice.metrics
.loadsimulator.util;
/**
*/
public class TimeStampProvider {
private int timeStep;
private long currentTime;
private int sendInterval;
public TimeStampProvider(long startTime, int timeStep, int sendInterval) {
this.timeStep = timeStep;
this.currentTime = startTime - timeStep;
this.sendInterval = sendInterval;
}
public long next() {
return currentTime += timeStep;
}
public long[] timestampsForNextInterval() {
return timestampsForInterval(sendInterval);
}
private long[] timestampsForInterval(int sendInterval) {
int steps = sendInterval / timeStep;
long[] timestamps = new long[steps];
for (int i = 0; i < timestamps.length; i++) {
timestamps[i] = next();
}
return timestamps;
}
}