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retention grid: interva length monotonicity: exception for keep=all

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fixes #6
This commit is contained in:
Christian Schwarz 2017-10-05 20:34:35 +02:00
parent 4b489ad2c7
commit c48069ce88
1 changed files with 13 additions and 4 deletions
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17
cmd/config_prune_grid.go
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@ -80,13 +80,22 @@ func parseGridPrunePolicy(e map[string]interface{}) (p *GridPrunePolicy, err err
// Assert intervals are of increasing length (not necessarily required, but indicates config mistake)
lastDuration := time.Duration(0)
for i := range intervals {
if intervals[i].Length < lastDuration {
err = fmt.Errorf("retention grid interval length must be monotonically increasing:"+
"interval %d is shorter than %d", i+1, i)
// If all intervals before were keep=all, this is ok
allPrevKeepCountAll := true
for j := i - 1; allPrevKeepCountAll && j >= 0; j-- {
allPrevKeepCountAll = intervals[j].KeepCount == util.RetentionGridKeepCountAll
}
if allPrevKeepCountAll {
goto isMonotonicIncrease
}
err = errors.New("retention grid interval length must be monotonically increasing")
return
} else {
lastDuration = intervals[i].Length
}
isMonotonicIncrease:
lastDuration = intervals[i].Length
}
p.RetentionGrid = util.NewRetentionGrid(intervals)