plc4go/spi/utils/IdGenerator.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   https://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 utils

import (
	"encoding/hex"
	"math/rand"

	"github.com/rs/zerolog"
)

var randomByteFiller = rand.Read

func GenerateId(localLog zerolog.Logger, numBytes int) string {
	transactionIdBytes := make([]byte, numBytes)
	n, err := randomByteFiller(transactionIdBytes)
	localLog.Trace().Err(err).Int("n", n).Msg("Read n bytes")
	return hex.EncodeToString(transactionIdBytes)
}