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/*
* Copyright (c) 2011-2020, hubin (jobob@qq.com).
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hmit.utils;
import java.util.UUID;
import java.util.concurrent.ThreadLocalRandom;
/**
* <p>
* 高效GUID产生算法(sequence),基于Snowflake实现64位自增ID算法。 <br>
* 优化开源项目 http://git.oschina.net/yu120/sequence
* </p>
*
* @author hubin
* @since 2016-08-01
*/
public class IdWorker {
/**
* 主机和进程的机器码
*/
private static Sequence WORKER = new Sequence();
public static long getId() {
return WORKER.nextId();
}
public static String getIdStr() {
return String.valueOf(WORKER.nextId());
}
/**
* <p>
* 有参构造器
* </p>
*
* @param workerId 工作机器 ID
* @param datacenterId 序列号
*/
public static void initSequence(long workerId, long datacenterId) {
WORKER = new Sequence(workerId, datacenterId);
}
/**
* <p>
* 使用ThreadLocalRandom获取UUID获取更优的效果 去掉"-"
* </p>
*/
public static String get32UUID() {
ThreadLocalRandom random = ThreadLocalRandom.current();
return new UUID(random.nextLong(), random.nextLong()).toString().replace(StringPool.DASH, StringPool.EMPTY);
}
}