storj/pkg/datarepair/repairer/repairer.go

152 lines
4.5 KiB
Go

// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package repairer
import (
"context"
"time"
"github.com/zeebo/errs"
"go.uber.org/zap"
monkit "gopkg.in/spacemonkeygo/monkit.v2"
"storj.io/storj/internal/memory"
"storj.io/storj/internal/sync2"
"storj.io/storj/pkg/datarepair/queue"
"storj.io/storj/pkg/identity"
"storj.io/storj/pkg/overlay"
"storj.io/storj/pkg/pb"
ecclient "storj.io/storj/pkg/storage/ec"
"storj.io/storj/pkg/storage/segments"
"storj.io/storj/pkg/storj"
"storj.io/storj/pkg/transport"
"storj.io/storj/satellite/metainfo"
"storj.io/storj/satellite/orders"
"storj.io/storj/storage"
)
// Error is a standard error class for this package.
var (
Error = errs.Class("repairer error")
mon = monkit.Package()
)
// Config contains configurable values for repairer
type Config struct {
MaxRepair int `help:"maximum segments that can be repaired concurrently" releaseDefault:"5" devDefault:"1"`
Interval time.Duration `help:"how frequently repairer should try and repair more data" releaseDefault:"1h" devDefault:"0h5m0s"`
Timeout time.Duration `help:"time limit for uploading repaired pieces to new storage nodes" devDefault:"10m0s" releaseDefault:"2h"`
MaxBufferMem memory.Size `help:"maximum buffer memory (in bytes) to be allocated for read buffers" default:"4M"`
}
// GetSegmentRepairer creates a new segment repairer from storeConfig values
func (c Config) GetSegmentRepairer(ctx context.Context, tc transport.Client, metainfo *metainfo.Service, orders *orders.Service, cache *overlay.Cache, identity *identity.FullIdentity) (ss SegmentRepairer, err error) {
defer mon.Task()(&ctx)(&err)
ec := ecclient.NewClient(tc, c.MaxBufferMem.Int())
return segments.NewSegmentRepairer(metainfo, orders, cache, ec, identity, c.Timeout), nil
}
// SegmentRepairer is a repairer for segments
type SegmentRepairer interface {
Repair(ctx context.Context, path storj.Path) (err error)
}
// Service contains the information needed to run the repair service
type Service struct {
queue queue.RepairQueue
config *Config
Limiter *sync2.Limiter
Loop sync2.Cycle
transport transport.Client
metainfo *metainfo.Service
orders *orders.Service
cache *overlay.Cache
repairer SegmentRepairer
}
// NewService creates repairing service
func NewService(queue queue.RepairQueue, config *Config, interval time.Duration, concurrency int, transport transport.Client, metainfo *metainfo.Service, orders *orders.Service, cache *overlay.Cache) *Service {
return &Service{
queue: queue,
config: config,
Limiter: sync2.NewLimiter(concurrency),
Loop: *sync2.NewCycle(interval),
transport: transport,
metainfo: metainfo,
orders: orders,
cache: cache,
}
}
// Close closes resources
func (service *Service) Close() error { return nil }
// Run runs the repairer service
func (service *Service) Run(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
// TODO: close segment repairer, currently this leaks connections
service.repairer, err = service.config.GetSegmentRepairer(
ctx,
service.transport,
service.metainfo,
service.orders,
service.cache,
service.transport.Identity(),
)
if err != nil {
return err
}
// wait for all repairs to complete
defer service.Limiter.Wait()
return service.Loop.Run(ctx, func(ctx context.Context) error {
err := service.process(ctx)
if err != nil {
zap.L().Error("process", zap.Error(err))
}
return nil
})
}
// process picks items from repair queue and spawns a repair worker
func (service *Service) process(ctx context.Context) (err error) {
defer mon.Task()(&ctx)(&err)
for {
seg, err := service.queue.Select(ctx)
zap.L().Info("Dequeued segment from repair queue", zap.String("segment", seg.GetPath()))
if err != nil {
if storage.ErrEmptyQueue.Has(err) {
return nil
}
return err
}
service.Limiter.Go(ctx, func() {
err := service.worker(ctx, seg)
if err != nil {
zap.L().Error("repair failed:", zap.Error(err))
}
})
}
}
func (service *Service) worker(ctx context.Context, seg *pb.InjuredSegment) (err error) {
defer mon.Task()(&ctx)(&err)
zap.L().Info("Limiter running repair on segment", zap.String("segment", seg.GetPath()))
err = service.repairer.Repair(ctx, seg.GetPath())
if err != nil {
return Error.New("repair failed: %v", err)
}
zap.L().Info("Deleting segment from repair queue", zap.String("segment", seg.GetPath()))
err = service.queue.Delete(ctx, seg)
if err != nil {
return Error.New("repair delete failed: %v", err)
}
return nil
}