package trustcontroller import ( "context" "errors" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/reputation" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/reputation/common" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger" "go.uber.org/zap" ) // ReportPrm groups the required parameters of the Controller.Report method. type ReportPrm struct { epoch uint64 } // SetEpoch sets epoch number to select reputation values. func (p *ReportPrm) SetEpoch(e uint64) { p.epoch = e } // Report reports local reputation values. // // Single Report operation overtakes all data from LocalTrustSource // to LocalTrustTarget (Controller's parameters). // // Each call acquires a report context for an Epoch parameter. // At the very end of the operation, the context is released. func (c *Controller) Report(prm ReportPrm) { // acquire report reportCtx := c.acquireReport(prm.epoch) if reportCtx == nil { return } // report local trust values reportCtx.report() // finally stop and free the report c.freeReport(prm.epoch, reportCtx.log) } type reportContext struct { epoch uint64 ctrl *Controller log *logger.Logger ctx common.Context } type iteratorContext struct { context.Context epoch uint64 } func (c iteratorContext) Epoch() uint64 { return c.epoch } func (c *Controller) acquireReport(epoch uint64) *reportContext { var ctx context.Context c.mtx.Lock() { if cancel := c.mCtx[epoch]; cancel == nil { ctx, cancel = context.WithCancel(context.Background()) c.mCtx[epoch] = cancel } } c.mtx.Unlock() log := &logger.Logger{Logger: c.opts.log.With( zap.Uint64("epoch", epoch), )} if ctx == nil { log.Debug("report is already started") return nil } return &reportContext{ epoch: epoch, ctrl: c, log: log, ctx: &iteratorContext{ Context: ctx, epoch: epoch, }, } } func (c *reportContext) report() { c.log.Debug("starting to report local trust values") // initialize iterator over locally collected values iterator, err := c.ctrl.prm.LocalTrustSource.InitIterator(c.ctx) if err != nil { c.log.Debug("could not initialize iterator over local trust values", zap.String("error", err.Error()), ) return } // initialize target of local trust values targetWriter, err := c.ctrl.prm.LocalTrustTarget.InitWriter(c.ctx) if err != nil { c.log.Debug("could not initialize local trust target", zap.String("error", err.Error()), ) return } // iterate over all values and write them to the target err = iterator.Iterate( func(t reputation.Trust) error { // check if context is done if err := c.ctx.Err(); err != nil { return err } return targetWriter.Write(t) }, ) if err != nil && !errors.Is(err, context.Canceled) { c.log.Debug("iterator over local trust failed", zap.String("error", err.Error()), ) return } // finish writing err = targetWriter.Close() if err != nil { c.log.Debug("could not finish writing local trust values", zap.String("error", err.Error()), ) return } c.log.Debug("reporting successfully finished") } func (c *Controller) freeReport(epoch uint64, log *logger.Logger) { var stopped bool c.mtx.Lock() { var cancel context.CancelFunc cancel, stopped = c.mCtx[epoch] if stopped { cancel() delete(c.mCtx, epoch) } } c.mtx.Unlock() if stopped { log.Debug("reporting successfully interrupted") } else { log.Debug("reporting is not started or already interrupted") } } // StopPrm groups the required parameters of the Controller.Stop method. type StopPrm struct { epoch uint64 } // SetEpoch sets epoch number the processing of the values of which must be interrupted. func (p *StopPrm) SetEpoch(e uint64) { p.epoch = e } // Stop interrupts the processing of local trust values. // // Releases acquired report context. func (c *Controller) Stop(prm StopPrm) { c.freeReport( prm.epoch, &logger.Logger{Logger: c.opts.log.With(zap.Uint64("epoch", prm.epoch))}, ) }