package main import ( "fmt" "github.com/chilts/sid" "github.com/kjk/betterguid" "github.com/oklog/ulid" "github.com/rs/xid" "github.com/satori/go.uuid" "github.com/segmentio/ksuid" "github.com/sony/sonyflake" "log" "math/rand" "time" ) func genXid() { id := xid.New() fmt.Printf("github.com/rs/xid: %s\n", id.String()) } func genKsuid() { id := ksuid.New() fmt.Printf("github.com/segmentio/ksuid: %s\n", id.String()) } func genBetterGUID() { id := betterguid.New() fmt.Printf("github.com/kjk/betterguid: %s\n", id) } func genUlid() { t := time.Now().UTC() entropy := rand.New(rand.NewSource(t.UnixNano())) id := ulid.MustNew(ulid.Timestamp(t), entropy) fmt.Printf("github.com/oklog/ulid: %s\n", id.String()) } func genSonyflake() { flake := sonyflake.NewSonyflake(sonyflake.Settings{}) id, err := flake.NextID() if err != nil { log.Fatalf("flake.NextID() failed with %s\n", err) } fmt.Printf("github.com/sony/sonyflake: %x\n", id) } func genSid() { id := sid.Id() fmt.Printf("github.com/chilts/sid: %s\n", id) } func genUUIDv4() { id,err := uuid.NewV4() if err != nil { fmt.Printf("get uuid error [%s]",err) } fmt.Printf("github.com/satori/go.uuid: %s\n", id) } func main() { genXid() genKsuid() genBetterGUID() genUlid() genSonyflake() genSid() genUUIDv4() }