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!1263 【开源之夏】新增UUIDv7的生成器

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Merge pull request !1263 from Cason/v6-dev
This commit is contained in:
Looly
2024-09-29 01:20:52 +00:00
committed by Gitee
parent 0175f1922b dc9a2092ff
commit f0c591a1b1
3 changed files with 143 additions and 10 deletions
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87
hutool-core/src/test/java/org/dromara/hutool/core/util/IdUtilTest.java
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@@ -26,17 +26,21 @@ import org.dromara.hutool.core.data.id.Snowflake;
import org.dromara.hutool.core.thread.ThreadUtil;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.RepeatedTest;
import org.junit.jupiter.api.Test;
import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;
import static org.junit.jupiter.api.Assertions.*;
import static org.junit.jupiter.api.Assertions.assertTrue;
/**
* {@link IdUtil} 单元测试
*
* @author looly
*
*/
public class IdUtilTest {
@@ -105,9 +109,9 @@ public class IdUtilTest {
//每个线程生成的ID数
final int idCountPerThread = 10000;
final CountDownLatch latch = new CountDownLatch(threadCount);
for(int i =0; i < threadCount; i++) {
for (int i = 0; i < threadCount; i++) {
ThreadUtil.execute(() -> {
for(int i1 = 0; i1 < idCountPerThread; i1++) {
for (int i1 = 0; i1 < idCountPerThread; i1++) {
final long id = snowflake.next();
set.add(id);
// Console.log("Add new id: {}", id);
@@ -135,9 +139,9 @@ public class IdUtilTest {
//每个线程生成的ID数
final int idCountPerThread = 10000;
final CountDownLatch latch = new CountDownLatch(threadCount);
for(int i =0; i < threadCount; i++) {
for (int i = 0; i < threadCount; i++) {
ThreadUtil.execute(() -> {
for(int i1 = 0; i1 < idCountPerThread; i1++) {
for (int i1 = 0; i1 < idCountPerThread; i1++) {
final long id = IdUtil.getSnowflake(1, 1).next();
set.add(id);
// Console.log("Add new id: {}", id);
@@ -156,9 +160,80 @@ public class IdUtilTest {
}
@Test
public void getDataCenterIdTest(){
public void getDataCenterIdTest() {
//按照mac地址算法拼接的算法，maxDatacenterId应该是0xffffffffL>>6-1此处暂时按照0x7fffffffffffffffL-1，防止最后取模溢出
final long dataCenterId = IdUtil.getDataCenterId(Long.MAX_VALUE);
Assertions.assertTrue(dataCenterId >= 0);
}
@Test
public void testUUIDv7Format() {
org.dromara.hutool.core.data.id.UUID uuid = org.dromara.hutool.core.data.id.UUID.randomUUID7();
String uuidStr = uuid.toString();
// 验证UUID字符串格式是否符合标准
assertTrue(uuidStr.matches("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"));
}
@Test
public void testUUIDv7Properties() {
org.dromara.hutool.core.data.id.UUID uuid = org.dromara.hutool.core.data.id.UUID.randomUUID7();
// 验证版本号是否为7
assertEquals(7, uuid.version());
// 验证变体是否为IETF variant
assertEquals(2, uuid.variant());
}
@RepeatedTest(10)
public void testUUIDv7Uniqueness() {
Set<org.dromara.hutool.core.data.id.UUID> uuids = new HashSet<>();
// 生成100万个UUIDv7，验证是否有重复
for (int i = 0; i < 1000000; i++) {
org.dromara.hutool.core.data.id.UUID uuid = org.dromara.hutool.core.data.id.UUID.randomUUID7();
assertFalse(uuids.contains(uuid));
uuids.add(uuid);
}
}
@Test
public void testUUIDv7Monotonicity() {
org.dromara.hutool.core.data.id.UUID prev = org.dromara.hutool.core.data.id.UUID.randomUUID7();
// 验证连续生成的1000个UUIDv7是否呈单调递增趋势
for (int i = 0; i < 1000; i++) {
org.dromara.hutool.core.data.id.UUID next = org.dromara.hutool.core.data.id.UUID.randomUUID7();
assertTrue(next.compareTo(prev) > 0);
prev = next;
}
}
/**
* UUIDv7的性能测试
*/
@Test
public void testUUIDv7Benchmark() {
final StopWatch timer = DateUtil.createStopWatch();
// UUID v7 generation benchmark
timer.start("UUID v7 generation");
for (int i = 0; i < 1000000; i++) {
IdUtil.randomUUID7();
}
timer.stop();
Console.log("UUIDv7 generation time: {} ms", timer.getLastTaskTimeMillis());
timer.start("UUID v7 generation and formatting");
for (int i = 0; i < 1000000; i++) {
IdUtil.randomUUID7().replace("-", "");
}
timer.stop();
Console.log("UUIDv7 generation and formatting time: {} ms", timer.getLastTaskTimeMillis());
}
}