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64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
//
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// DISCLAIMER
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//
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// Copyright 2016-2022 ArangoDB GmbH, Cologne, Germany
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package util
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import (
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"time"
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)
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// Interval is a specialization of Duration so we can add some
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// helper functions to that.
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type Interval time.Duration
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func (i Interval) String() string {
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return time.Duration(i).String()
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}
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// ReduceTo returns an interval that is equal to min(x, i).
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func (i Interval) ReduceTo(x Interval) Interval {
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if i < x {
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return i
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}
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return x
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}
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// IncreaseTo returns an interval that is equal to max(x, i).
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func (i Interval) IncreaseTo(x Interval) Interval {
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if i > x {
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return i
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}
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return x
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}
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// Backoff returns an interval that is equal to min(i*factor, maxInt).
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func (i Interval) Backoff(factor float64, maxInt Interval) Interval {
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i = Interval(float64(i) * factor)
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if i < maxInt {
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return i
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}
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return maxInt
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}
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// After waits for the interval to elapse and then sends the current time
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// on the returned channel.
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func (i Interval) After() <-chan time.Time {
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return time.After(time.Duration(i))
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}
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