github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/store/util/random/id.go (about)

     1  // Copyright 2019 Dolthub, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package random
    16  
    17  import (
    18  	"crypto/rand"
    19  	"encoding/hex"
    20  
    21  	"github.com/dolthub/dolt/go/store/d"
    22  )
    23  
    24  var (
    25  	reader = rand.Reader
    26  )
    27  
    28  // Id creates a unique ID which is a random 16 byte hex string
    29  func Id() string {
    30  	data := make([]byte, 16)
    31  	_, err := reader.Read(data)
    32  	d.Chk.NoError(err)
    33  	return hex.EncodeToString(data)
    34  }