chore: import upstream snapshot with attribution

pkg/uid/id.go

@@ -0,0 +1,59 @@
+/*
+ * 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 uid
+
+import (
+	"math/rand"
+	"time"
+
+	"github.com/bwmarrin/snowflake"
+)
+
+// SnowFlakeID snowflake id
+type SnowFlakeID struct {
+	*snowflake.Node
+}
+
+var snowFlakeIDGenerator *SnowFlakeID
+
+func init() {
+	source := rand.NewSource(time.Now().UnixNano())
+	r := rand.New(source)
+	node, err := snowflake.NewNode(int64(r.Intn(1000)) + 1)
+	if err != nil {
+		panic(err.Error())
+	}
+	snowFlakeIDGenerator = &SnowFlakeID{node}
+}
+
+func ID() snowflake.ID {
+	id := snowFlakeIDGenerator.Generate()
+	return id
+}
+
+func IDStr12() string {
+	id := snowFlakeIDGenerator.Generate()
+	return id.Base58()
+}
+
+func IDStr() string {
+	id := snowFlakeIDGenerator.Generate()
+	return id.Base32()
+}