org.apache.flink.runtime.state.gemini.engine.GRegionIDImpl 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 org.apache.flink.runtime.state.gemini.engine;
import org.apache.flink.runtime.state.gemini.engine.exceptions.GeminiRuntimeException;
/**
* GRegionIDImpl.
*/
public class GRegionIDImpl implements GRegionID {
private final int regionCode;
private final int regionID;
private final int indexID;
/**
* indexID is from 1~255, 0 is for data. and from 1 to 7 is used for gemini self. from 8 will be used for customer in future.
*
* @param indexID 0 is for data; 1~255 is for index.
* @param regionID is same as Key Group.
*/
public GRegionIDImpl(int indexID, int regionID) {
this.indexID = indexID;
this.regionID = regionID;
this.regionCode = indexID << G_INDEX_BIT | regionID;
check();
}
private void check() {
if (this.indexID > 0xFF || this.regionID > 0xFF_FF_FF) {
throw new GeminiRuntimeException(String.format("error indexID %d or regionID %d, indexID must be less than 255, regionID less than 16777215.",
this.indexID,
this.regionID));
}
}
public GRegionIDImpl(int regionCode) {
this.regionCode = regionCode;
this.regionID = regionCode & G_REGION_ID_MARK;
this.indexID = regionCode >>> G_INDEX_BIT;
}
@Override
public int getRegionCode() {
return regionCode;
}
@Override
public int getId() {
return regionID;
}
@Override
public int getIndexID() {
return indexID;
}
@Override
public String toString() {
return "_" + indexID + "_" + regionID;
}
}