forked from TrueCloudLab/frostfs-node
Evgenii Stratonikov
0e31c12e63
Drop duplicate entities. Format entities. Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com> Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
65 lines
1.4 KiB
Go
65 lines
1.4 KiB
Go
package audit
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import (
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"errors"
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"fmt"
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"sort"
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"strings"
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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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"go.uber.org/zap"
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)
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var ErrInvalidIRNode = errors.New("node is not in the inner ring list")
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func (ap *Processor) selectContainersToAudit(epoch uint64) ([]cid.ID, error) {
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containers, err := ap.containerClient.ContainersOf(nil)
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if err != nil {
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return nil, fmt.Errorf("can't get list of containers to start audit: %w", err)
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}
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// consider getting extra information about container complexity from
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// audit contract there
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ap.log.Debug(logs.AuditContainerListingFinished,
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zap.Int("total amount", len(containers)),
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)
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sort.Slice(containers, func(i, j int) bool {
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return strings.Compare(containers[i].EncodeToString(), containers[j].EncodeToString()) < 0
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})
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ind := ap.irList.InnerRingIndex()
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irSize := ap.irList.InnerRingSize()
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if ind < 0 || ind >= irSize {
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return nil, ErrInvalidIRNode
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}
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return Select(containers, epoch, uint64(ind), uint64(irSize)), nil
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}
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func Select(ids []cid.ID, epoch, index, size uint64) []cid.ID {
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if index >= size {
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return nil
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}
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var a, b uint64
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ln := uint64(len(ids))
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pivot := ln % size
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delta := ln / size
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index = (index + epoch) % size
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if index < pivot {
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a = delta + 1
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} else {
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a = delta
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b = pivot
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}
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from := a*index + b
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to := a*(index+1) + b
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return ids[from:to]
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}
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