88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package audit
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import (
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"context"
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"math/rand"
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"time"
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"go.uber.org/zap"
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"storj.io/common/storj"
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"storj.io/common/sync2"
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"storj.io/storj/satellite/metainfo"
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)
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// Chore populates reservoirs and the audit queue.
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//
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// architecture: Chore
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type Chore struct {
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log *zap.Logger
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rand *rand.Rand
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queue *Queue
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Loop *sync2.Cycle
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metainfoLoop *metainfo.Loop
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config Config
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}
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// NewChore instantiates Chore.
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func NewChore(log *zap.Logger, queue *Queue, metaLoop *metainfo.Loop, config Config) *Chore {
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return &Chore{
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log: log,
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rand: rand.New(rand.NewSource(time.Now().Unix())),
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queue: queue,
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Loop: sync2.NewCycle(config.ChoreInterval),
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metainfoLoop: metaLoop,
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config: config,
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}
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}
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// Run starts the chore.
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func (chore *Chore) Run(ctx context.Context) (err error) {
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defer mon.Task()(&ctx)(&err)
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return chore.Loop.Run(ctx, func(ctx context.Context) (err error) {
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defer mon.Task()(&ctx)(&err)
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pathCollector := NewPathCollector(chore.config.Slots, chore.rand)
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err = chore.metainfoLoop.Join(ctx, pathCollector)
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if err != nil {
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chore.log.Error("error joining metainfoloop", zap.Error(err))
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return nil
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}
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var newQueue []storj.Path
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queuePaths := make(map[storj.Path]struct{})
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// Add reservoir paths to queue in pseudorandom order.
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for i := 0; i < chore.config.Slots; i++ {
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for _, res := range pathCollector.Reservoirs {
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// Skip reservoir if no path at this index.
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if len(res.Paths) <= i {
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continue
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}
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path := res.Paths[i]
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if path == "" {
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continue
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}
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if _, ok := queuePaths[path]; !ok {
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newQueue = append(newQueue, path)
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queuePaths[path] = struct{}{}
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}
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}
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}
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chore.queue.Swap(newQueue)
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return nil
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})
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}
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// Close closes chore.
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func (chore *Chore) Close() error {
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chore.Loop.Close()
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return nil
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}
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