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block.go
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block.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package helpers
import (
"math/rand"
"time"
)
type Block struct {
Duration int64
Variance float64
}
func NewBlock() *Block {
return &Block{
Duration: 1,
}
}
func (b Block) GetDuration() time.Duration {
if b.Variance == 0 {
return time.Duration(b.Duration) * time.Second
}
base := time.Duration(b.Duration) * time.Second
factor := int64(b.Variance * float64(time.Second))
// factor of 3, random 0-6 yields random number between -3 and +3
offset := factor - rand.Int63n(2*factor)
return base + time.Duration(offset)
}
func (b Block) GetStep(d time.Duration) time.Duration {
if b.Variance == 0 {
return d
}
factor := int64(b.Variance * float64(d))
offset := factor - rand.Int63n(factor*2)
return d + time.Duration(offset)
}