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