/
randomizer.go
46 lines (41 loc) · 1.18 KB
/
randomizer.go
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package main
//
//Copyright 2018 Telenor Digital AS
//
//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.
//
import "math/rand"
// TheRandomizer triggers a function a percentage of the time
type TheRandomizer struct {
percent int
}
// NewRandomizer creates a new randomizer
func NewRandomizer(percentage int) *TheRandomizer {
if percentage > 100 {
percentage = 100
}
if percentage < 0 {
percentage = 0
}
return &TheRandomizer{percentage}
}
// Maybe runs something a percentage of the time
func (t *TheRandomizer) Maybe(something func()) {
if t.Now() {
something()
}
}
// Now returns true if the condition should trigger
func (t *TheRandomizer) Now() bool {
return rand.Intn(100) < t.percent
}