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Check context before each preloading.

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This commit is contained in:
Fabian Reinartz 2015-05-12 12:03:30 +02:00
parent 1b3d3b4d5c
commit 8ea94ebb58
1 changed files with 6 additions and 4 deletions
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10
promql/analyzer.go
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@ -131,19 +131,21 @@ func (a *Analyzer) Prepare(ctx context.Context) (local.Preloader, error) {
// Preload all analyzed ranges.
for offset, pt := range a.offsetPreloadTimes {
if err = contextDone(ctx, env); err != nil {
return nil, err
}
start := a.Start.Add(-offset)
end := a.End.Add(-offset)
for fp, rangeDuration := range pt.ranges {
if err = contextDone(ctx, env); err != nil {
return nil, err
}
err = p.PreloadRange(fp, start.Add(-rangeDuration), end, *stalenessDelta)
if err != nil {
return nil, err
}
}
for fp := range pt.instants {
if err = contextDone(ctx, env); err != nil {
return nil, err
}
err = p.PreloadRange(fp, start, end, *stalenessDelta)
if err != nil {
return nil, err