1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
// Copyright 2017 Google LLC. All Rights Reserved.
//
// 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 storage
import (
"crypto/rand"
"math"
"math/big"
)
// NewTreeID generates a random, positive, non-zero tree ID.
func NewTreeID() (int64, error) {
id, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt64))
if err != nil {
return 0, err
}
return id.Int64() + 1, nil
}
|