lxm_library_java/SnowFlake-IdGenerator
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zhouzj
2021-03-26 00:22:12 +08:00
parent ca025ea7cc
commit 7aa0223c49
2 changed files with 124 additions and 124 deletions
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158
Java/source/src/main/java/com/yitter/idgen/DefaultIdGenerator.java
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@@ -1,79 +1,79 @@
/*
* 版权属于：yitter(yitter@126.com)
* 开源地址：https://gitee.com/yitter/idgenerator
*/
package com.yitter.idgen;
import com.yitter.contract.ISnowWorker;
import com.yitter.contract.IdGeneratorException;
import com.yitter.contract.IdGeneratorOptions;
import com.yitter.contract.IIdGenerator;
import com.yitter.core.SnowWorkerM1;
import com.yitter.core.SnowWorkerM2;
public class DefaultIdGenerator implements IIdGenerator {
private final ISnowWorker _SnowWorker;
public DefaultIdGenerator(IdGeneratorOptions options) throws IdGeneratorException {
if (options == null) {
throw new IdGeneratorException("options error.");
}
if (options.BaseTime < 315504000000L || options.BaseTime > System.currentTimeMillis()) {
throw new IdGeneratorException("BaseTime error.");
}
if (options.WorkerIdBitLength <= 0) {
throw new IdGeneratorException("WorkerIdBitLength error.(range:[1, 21])");
}
if (options.SeqBitLength + options.WorkerIdBitLength > 22) {
throw new IdGeneratorException("error：WorkerIdBitLength + SeqBitLength <= 22");
}
double maxWorkerIdNumber = Math.pow(2, options.WorkerIdBitLength) - 1;
if (options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber) {
throw new IdGeneratorException("WorkerId error. (range:[0, " + (maxWorkerIdNumber > 0 ? maxWorkerIdNumber : 63) + "]");
}
if (options.SeqBitLength < 2 || options.SeqBitLength > 21) {
throw new IdGeneratorException("SeqBitLength error. (range:[2, 21])");
}
double maxSeqNumber = Math.pow(2, options.SeqBitLength) - 1;
if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber) {
throw new IdGeneratorException("MaxSeqNumber error. (range:[1, " + maxSeqNumber + "]");
}
double maxValue = maxSeqNumber;
if (options.MinSeqNumber < 1 || options.MinSeqNumber > maxValue) {
throw new IdGeneratorException("MinSeqNumber error. (range:[1, " + maxValue + "]");
}
switch (options.Method) {
case 1:
_SnowWorker = new SnowWorkerM1(options);
break;
case 2:
_SnowWorker = new SnowWorkerM2(options);
break;
default:
_SnowWorker = new SnowWorkerM1(options);
break;
}
if (options.Method == 1) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
@Override
public long newLong() {
return _SnowWorker.nextId();
}
}
/*
* 版权属于：yitter(yitter@126.com)
* 开源地址：https://gitee.com/yitter/idgenerator
*/
package com.yitter.idgen;
import com.yitter.contract.ISnowWorker;
import com.yitter.contract.IdGeneratorException;
import com.yitter.contract.IdGeneratorOptions;
import com.yitter.contract.IIdGenerator;
import com.yitter.core.SnowWorkerM1;
import com.yitter.core.SnowWorkerM2;
public class DefaultIdGenerator implements IIdGenerator {
private static ISnowWorker _SnowWorker = null;
public DefaultIdGenerator(IdGeneratorOptions options) throws IdGeneratorException {
if (options == null) {
throw new IdGeneratorException("options error.");
}
if (options.BaseTime < 315504000000L || options.BaseTime > System.currentTimeMillis()) {
throw new IdGeneratorException("BaseTime error.");
}
if (options.WorkerIdBitLength <= 0) {
throw new IdGeneratorException("WorkerIdBitLength error.(range:[1, 21])");
}
if (options.SeqBitLength + options.WorkerIdBitLength > 22) {
throw new IdGeneratorException("error：WorkerIdBitLength + SeqBitLength <= 22");
}
double maxWorkerIdNumber = Math.pow(2, options.WorkerIdBitLength) - 1;
if (options.WorkerId < 0 || options.WorkerId > maxWorkerIdNumber) {
throw new IdGeneratorException("WorkerId error. (range:[0, " + (maxWorkerIdNumber > 0 ? maxWorkerIdNumber : 63) + "]");
}
if (options.SeqBitLength < 2 || options.SeqBitLength > 21) {
throw new IdGeneratorException("SeqBitLength error. (range:[2, 21])");
}
double maxSeqNumber = Math.pow(2, options.SeqBitLength) - 1;
if (options.MaxSeqNumber < 0 || options.MaxSeqNumber > maxSeqNumber) {
throw new IdGeneratorException("MaxSeqNumber error. (range:[1, " + maxSeqNumber + "]");
}
double maxValue = maxSeqNumber;
if (options.MinSeqNumber < 1 || options.MinSeqNumber > maxValue) {
throw new IdGeneratorException("MinSeqNumber error. (range:[1, " + maxValue + "]");
}
switch (options.Method) {
case 1:
_SnowWorker = new SnowWorkerM1(options);
break;
case 2:
_SnowWorker = new SnowWorkerM2(options);
break;
default:
_SnowWorker = new SnowWorkerM1(options);
break;
}
if (options.Method == 1) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
@Override
public long newLong() {
return _SnowWorker.nextId();
}
}

90
Java/source/src/main/java/com/yitter/idgen/YitIdHelper.java
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@@ -1,45 +1,45 @@
/*
* 版权属于：yitter(yitter@126.com)
* 开源地址：https://gitee.com/yitter/idgenerator
*/
package com.yitter.idgen;
import com.yitter.contract.IdGeneratorException;
import com.yitter.contract.IdGeneratorOptions;
import com.yitter.contract.IIdGenerator;
/**
* 这是一个调用的例子，默认情况下，单机集成者可以直接使用 nextId()。
*/
public class YitIdHelper {
private static IIdGenerator idGenInstance = null;
public static IIdGenerator getIdGenInstance()
{
return idGenInstance;
}
/**
* 设置参数，建议程序初始化时执行一次
* @param options
*/
public static void setIdGenerator(IdGeneratorOptions options) throws IdGeneratorException {
idGenInstance = new DefaultIdGenerator(options);
}
/**
* 生成新的Id
* 调用本方法前，请确保调用了 SetIdGenerator 方法做初始化。
* @return
*/
public static long nextId() throws IdGeneratorException {
if (idGenInstance == null)
{
idGenInstance = new DefaultIdGenerator(new IdGeneratorOptions((short)1));
}
return idGenInstance.newLong();
}
}
/*
* 版权属于：yitter(yitter@126.com)
* 开源地址：https://gitee.com/yitter/idgenerator
*/
package com.yitter.idgen;
import com.yitter.contract.IdGeneratorException;
import com.yitter.contract.IdGeneratorOptions;
import com.yitter.contract.IIdGenerator;
/**
* 这是一个调用的例子，默认情况下，单机集成者可以直接使用 nextId()。
*/
public class YitIdHelper {
private static IIdGenerator idGenInstance = null;
public static IIdGenerator getIdGenInstance() {
return idGenInstance;
}
/**
* 设置参数，建议程序初始化时执行一次
*
* @param options
*/
public static void setIdGenerator(IdGeneratorOptions options) throws IdGeneratorException {
idGenInstance = new DefaultIdGenerator(options);
}
/**
* 生成新的Id
* 调用本方法前，请确保调用了 SetIdGenerator 方法做初始化。
*
* @return
*/
public static long nextId() throws IdGeneratorException {
if (idGenInstance == null) {
idGenInstance = new DefaultIdGenerator(new IdGeneratorOptions((short) 1));
}
return idGenInstance.newLong();
}
}