com.generallycloud.baseio.protocol.Calculagraph Maven / Gradle / Ivy
/*
* Copyright 2015-2017 GenerallyCloud.com
*
* Licensed 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.generallycloud.baseio.protocol;
public class Calculagraph {
private int markInterval = 1;
private long nextMark ;
private long currentMark ;
private int sequenceNO ;
private long alphaTimestamp ;
// private Logger logger = LoggerFactory.getLogger(Calculagraph.class);
public Calculagraph(int markInterval, long currentMark) {
this.markInterval = markInterval;
this.currentMark = currentMark;
this.nextMark = currentMark + markInterval;
this.alphaTimestamp = currentMark;
// logger.debug("________________lastMark______create:{}", currentMark);
}
public Calculagraph(int markInterval) {
this(markInterval, System.currentTimeMillis());
}
public long getTimestamp() {
long current = System.currentTimeMillis();
if (current < nextMark) {
return currentMark;
}
for (; current >= nextMark;) {
// logger.debug("________________current - nextMark:{}", current - nextMark);
nextMark = nextMark + markInterval;
}
currentMark = nextMark - markInterval;
sequenceNO = 0;
return currentMark;
}
public int getSequenceNO() {
return sequenceNO++;
}
public long getAlphaTimestamp() {
return alphaTimestamp;
}
}