90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
// Copyright (C) 2019 Storj Labs, Inc.
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// See LICENSE for copying information.
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package downtime
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import (
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"context"
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"time"
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"go.uber.org/zap"
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"storj.io/common/sync2"
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"storj.io/storj/satellite/overlay"
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)
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// DetectionChore looks for nodes that have not checked in and tries to contact them.
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//
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// architecture: Chore
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type DetectionChore struct {
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log *zap.Logger
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Loop *sync2.Cycle
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config Config
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overlay *overlay.Service
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service *Service
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db DB
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}
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// NewDetectionChore instantiates DetectionChore.
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func NewDetectionChore(log *zap.Logger, config Config, overlay *overlay.Service, service *Service, db DB) *DetectionChore {
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return &DetectionChore{
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log: log,
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Loop: sync2.NewCycle(config.DetectionInterval),
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config: config,
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overlay: overlay,
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service: service,
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db: db,
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}
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}
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// Run starts the chore.
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func (chore *DetectionChore) 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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chore.log.Debug("checking for nodes that have not had a successful check-in within the interval.",
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zap.Stringer("interval", chore.config.DetectionInterval))
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nodeLastContacts, err := chore.overlay.GetSuccesfulNodesNotCheckedInSince(ctx, chore.config.DetectionInterval)
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if err != nil {
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chore.log.Error("error retrieving node addresses for downtime detection.", zap.Error(err))
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return nil
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}
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chore.log.Debug("nodes that have had not had a successful check-in with the interval.",
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zap.Stringer("interval", chore.config.DetectionInterval),
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zap.Int("count", len(nodeLastContacts)))
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for _, nodeLastContact := range nodeLastContacts {
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success, err := chore.service.CheckAndUpdateNodeAvailability(ctx, nodeLastContact.ID, nodeLastContact.Address)
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if err != nil {
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chore.log.Error("error during downtime detection ping back.",
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zap.Bool("success", success),
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zap.Error(err))
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continue
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}
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if !success {
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now := time.Now().UTC()
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duration := now.Sub(nodeLastContact.LastContactSuccess) - chore.config.DetectionInterval
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err = chore.db.Add(ctx, nodeLastContact.ID, now, duration)
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if err != nil {
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chore.log.Error("error adding node seconds offline information.",
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zap.Stringer("node ID", nodeLastContact.ID),
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zap.Stringer("duration", duration),
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zap.Error(err))
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}
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}
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}
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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 *DetectionChore) Close() error {
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chore.Loop.Close()
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return nil
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}
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