ref[id]: rename IdUtils to UuidUtils

protocol/src/main/java/com/zfoo/protocol/util/UuidUtils.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020 The zfoo Authors
+ * 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.zfoo.protocol.util;
+
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * @author godotg
+ * @version 3.0
+ */
+public abstract class UuidUtils {
+
+    private static final AtomicInteger ATOMIC_INTEGER = new AtomicInteger(0);
+
+    /**
+     * 获取本地int的唯一id，如果达到最大值则重新从最小值重新计算，线程安全
+     */
+    public static int getLocalIntId() {
+        return ATOMIC_INTEGER.incrementAndGet();
+    }
+
+
+    /**
+     * 获得分布式环境下唯一id
+     *
+     * @return String UUID
+     */
+    public static String getUUID() {
+        String uuid = UUID.randomUUID().toString();
+        //去掉“-”符号
+        return uuid.replaceAll("-", "");
+    }
+
+
+    /**
+     * 小的id在前 - 大的id在后
+     *
+     * @param a 第一个数字
+     * @param b 第二个数字
+     * @return 生成的id
+     */
+    public static String generateStringId(long a, long b) {
+        return Math.min(a, b) + "-" + Math.max(a, b);
+    }
+
+}