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[#198] Fix expiration epoch calculation

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Previous implementation does not provide 'at least'
lifetime guarantee.

Signed-off-by: Alex Vanin <a.vanin@yadro.com>
This commit is contained in:
Alexey Vanin 2022-09-01 12:21:27 +03:00 • committed by Kira
parent 4dcdb8ef02
commit a1052c04db
2 changed files with 33 additions and 5 deletions
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18
uploader/filter.go
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@ -3,6 +3,7 @@ package uploader
import (
"bytes"
"fmt"
"math"
"strconv"
"time"
@ -121,7 +122,18 @@ func prepareExpirationHeader(headers map[string]string, epochDurations *epochDur
}
func updateExpirationHeader(headers map[string]string, durations *epochDurations, expDuration time.Duration) {
epochDuration := durations.msPerBlock * int64(durations.blockPerEpoch)
numEpoch := expDuration.Milliseconds() / epochDuration
headers[object.SysAttributeExpEpoch] = strconv.FormatInt(int64(durations.currentEpoch)+numEpoch, 10)
epochDuration := uint64(durations.msPerBlock) * durations.blockPerEpoch
currentEpoch := durations.currentEpoch
numEpoch := uint64(expDuration.Milliseconds()) / epochDuration
if uint64(expDuration.Milliseconds())%epochDuration != 0 {
numEpoch++
}
expirationEpoch := uint64(math.MaxUint64)
if numEpoch < math.MaxUint64-currentEpoch {
expirationEpoch = currentEpoch + numEpoch
}
headers[object.SysAttributeExpEpoch] = strconv.FormatUint(expirationEpoch, 10)
}