Create & Init Project...

app/common/openplatform/random/BUILD

@@ -0,0 +1,28 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = ["uniqid.go"],
+    importpath = "go-common/app/common/openplatform/random",
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

app/common/openplatform/random/uniqid.go

@@ -0,0 +1,35 @@
+package random
+
+import (
+	"math"
+	"math/rand"
+	"time"
+)
+
+var (
+	rnd *rand.Rand
+	ch  chan int64
+)
+
+func init() {
+	rnd = rand.New(rand.NewSource(time.Now().UnixNano()))
+	ch = make(chan int64, 1000)
+	go randomBase(ch)
+}
+
+func randomBase(c chan int64) {
+	for {
+		c <- rnd.Int63()
+	}
+}
+
+//Uniqid 随机数，length是需要返回的长度，只支持10~19位
+func Uniqid(length int) int64 {
+	if length < 10 || length > 19 {
+		return 0
+	}
+	prefix := (time.Now().UnixNano() / 100000000) & 0x3fffffff
+	cut := int64(math.Pow10(length - 9))
+	suffix := <-ch % cut
+	return prefix*cut + suffix
+}