package models import ( "sync" "time" "github.com/influxdata/telegraf" "github.com/influxdata/telegraf/selfstat" ) type RunningAggregator struct { sync.Mutex Aggregator telegraf.Aggregator Config *AggregatorConfig periodStart time.Time periodEnd time.Time MetricsPushed selfstat.Stat MetricsFiltered selfstat.Stat MetricsDropped selfstat.Stat PushTime selfstat.Stat } func NewRunningAggregator( aggregator telegraf.Aggregator, config *AggregatorConfig, ) *RunningAggregator { return &RunningAggregator{ Aggregator: aggregator, Config: config, MetricsPushed: selfstat.Register( "aggregate", "metrics_pushed", map[string]string{"aggregator": config.Name}, ), MetricsFiltered: selfstat.Register( "aggregate", "metrics_filtered", map[string]string{"aggregator": config.Name}, ), MetricsDropped: selfstat.Register( "aggregate", "metrics_dropped", map[string]string{"aggregator": config.Name}, ), PushTime: selfstat.Register( "aggregate", "push_time_ns", map[string]string{"aggregator": config.Name}, ), } } // AggregatorConfig is the common config for all aggregators. type AggregatorConfig struct { Name string DropOriginal bool Period time.Duration Delay time.Duration NameOverride string MeasurementPrefix string MeasurementSuffix string Tags map[string]string Filter Filter } func (r *RunningAggregator) Name() string { return "aggregators." + r.Config.Name } func (r *RunningAggregator) Period() time.Duration { return r.Config.Period } func (r *RunningAggregator) SetPeriodStart(start time.Time) { r.periodStart = start r.periodEnd = r.periodStart.Add(r.Config.Period).Add(r.Config.Delay) } func (r *RunningAggregator) MakeMetric(metric telegraf.Metric) telegraf.Metric { m := makemetric( metric, r.Config.NameOverride, r.Config.MeasurementPrefix, r.Config.MeasurementSuffix, r.Config.Tags, nil) if m != nil { m.SetAggregate(true) } r.MetricsPushed.Incr(1) return m } func (r *RunningAggregator) metricFiltered(metric telegraf.Metric) { r.MetricsFiltered.Incr(1) metric.Accept() } func (r *RunningAggregator) metricDropped(metric telegraf.Metric) { r.MetricsDropped.Incr(1) metric.Accept() } // Add a metric to the aggregator and return true if the original metric // should be dropped. func (r *RunningAggregator) Add(metric telegraf.Metric) bool { if ok := r.Config.Filter.Select(metric); !ok { return false } r.Config.Filter.Modify(metric) if len(metric.FieldList()) == 0 { return r.Config.DropOriginal } r.Lock() defer r.Unlock() if r.periodStart.IsZero() || metric.Time().After(r.periodEnd) { r.metricDropped(metric) return r.Config.DropOriginal } r.Aggregator.Add(metric) return r.Config.DropOriginal } func (r *RunningAggregator) Push(acc telegraf.Accumulator) { r.Lock() defer r.Unlock() r.periodStart = r.periodEnd r.periodEnd = r.periodStart.Add(r.Config.Period).Add(r.Config.Delay) r.push(acc) r.Aggregator.Reset() } func (r *RunningAggregator) push(acc telegraf.Accumulator) { start := time.Now() r.Aggregator.Push(acc) elapsed := time.Since(start) r.PushTime.Incr(elapsed.Nanoseconds()) }