github.com/kaleido-io/firefly@v0.0.0-20210622132723-8b4b6aacb971/pkg/fftypes/idutils.go (about)

     1  // Copyright © 2021 Kaleido, Inc.
     2  //
     3  // SPDX-License-Identifier: Apache-2.0
     4  //
     5  // Licensed under the Apache License, Version 2.0 (the "License");
     6  // you may not use this file except in compliance with the License.
     7  // You may obtain a copy of the License at
     8  //
     9  //     http://www.apache.org/licenses/LICENSE-2.0
    10  //
    11  // Unless required by applicable law or agreed to in writing, software
    12  // distributed under the License is distributed on an "AS IS" BASIS,
    13  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14  // See the License for the specific language governing permissions and
    15  // limitations under the License.
    16  
    17  package fftypes
    18  
    19  import (
    20  	"github.com/aidarkhanov/nanoid"
    21  )
    22  
    23  const (
    24  	// ShortIDlphabet is designed for easy double-click select
    25  	ShortIDlphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
    26  )
    27  
    28  func ShortID() string {
    29  	return nanoid.Must(nanoid.Generate(ShortIDlphabet, 8))
    30  }
    31  
    32  func SafeHashCompare(h1 *Bytes32, h2 *Bytes32) bool {
    33  	if h1 == nil && h2 == nil {
    34  		return true
    35  	}
    36  	if h1 == nil && h2 != nil || h2 == nil && h1 != nil {
    37  		return false
    38  	}
    39  	return *h1 == *h2
    40  }