57 lines
955 B
Go
57 lines
955 B
Go
package chill
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import (
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"bytes"
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"context"
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"errors"
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"os"
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"strconv"
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"time"
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)
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var TempFile string = "/sys/class/thermal/thermal_zone2/temp"
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var MaxTemp int = 72500
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var Sleep = time.Second * 10
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var ErrChilledOut = errors.New("temperature dropped below threshold")
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func getCurrentTemp() (o int, err error) {
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var by []byte
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by, err = os.ReadFile(TempFile)
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if err != nil {
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return
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}
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by = bytes.TrimSpace(by)
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o, err = strconv.Atoi(string(by))
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return
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}
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func Chill(baseCtx context.Context) context.Context {
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ctx, cancel := context.WithCancelCause(baseCtx)
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ret := func(e error) context.Context {
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cancel(e)
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return ctx
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}
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current, err := getCurrentTemp()
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if err != nil {
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return ret(err)
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}
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if current < MaxTemp {
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return ret(ErrChilledOut)
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}
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go func() {
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for current >= MaxTemp && err == nil {
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time.Sleep(Sleep)
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current, err = getCurrentTemp()
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}
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if err == nil {
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err = ErrChilledOut
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}
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cancel(err)
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}()
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return ctx
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}
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