mirror of
https://github.com/nabbar/golib.git
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984ba51587
Package Errors: - add function to check & cast error interface into golib Error interface - update CodeError type to simplify management & error creation - add function to simplify call of Error function from a generic error interface - remove some useless function from Error interface All Other Packages: - apply change of package Errors into all other packages
128 lines
2.5 KiB
Go
128 lines
2.5 KiB
Go
/*
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* MIT License
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*
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* Copyright (c) 2021 Nicolas JUHEL
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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package mailPooler
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import (
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"context"
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"sync"
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"time"
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)
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type Counter interface {
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Pool(ctx context.Context) error
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Reset() error
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Clone() Counter
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}
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type counter struct {
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m sync.Mutex
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num int
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max int
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dur time.Duration
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tim time.Time
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fct FuncCaller
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}
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func newCounter(max int, dur time.Duration, fct FuncCaller) Counter {
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return &counter{
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m: sync.Mutex{},
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num: max,
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max: max,
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dur: dur,
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tim: time.Time{},
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fct: fct,
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}
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}
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func (c *counter) Pool(ctx context.Context) error {
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c.m.Lock()
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defer c.m.Unlock()
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if c.max <= 0 || c.dur <= 0 {
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return nil
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}
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if e := ctx.Err(); e != nil {
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return ErrorMailPoolerContext.Error(e)
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}
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if c.tim.IsZero() {
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c.num = c.max
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} else if time.Since(c.tim) > c.dur {
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c.num = c.max
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c.tim = time.Time{}
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}
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if c.num > 0 {
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c.num--
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c.tim = time.Now()
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} else {
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time.Sleep(c.dur - time.Since(c.tim))
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c.num = c.max - 1
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c.tim = time.Now()
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if e := ctx.Err(); e != nil {
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return ErrorMailPoolerContext.Error(e)
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} else if err := c.fct(); err != nil {
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return err
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}
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}
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return nil
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}
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func (c *counter) Reset() error {
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c.m.Lock()
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defer c.m.Unlock()
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if c.max <= 0 || c.dur <= 0 {
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return nil
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}
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c.num = c.max
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c.tim = time.Time{}
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if err := c.fct(); err != nil {
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return err
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}
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return nil
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}
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func (c *counter) Clone() Counter {
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return &counter{
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m: sync.Mutex{},
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num: c.num,
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max: c.max,
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dur: c.dur,
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tim: time.Time{},
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fct: c.fct,
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}
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}
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