Scale scores during score operation.

Closes #24.

internal/trending/item.go

@@ -1,6 +1,7 @@
 package trending
 
 import (
+	"context"
 	"math"
 	"time"
 )
@@ -31,7 +32,7 @@ func newItem[K comparable](id K, options *options[K]) *item[K] {
 	}
 }
 
-func (i *item[K]) score() Score[K] {
+func (i *item[K]) score(ctx context.Context, id K) Score[K] {
 	recentCount, count := i.computeCounts()
 	if recentCount < i.options.countThreshold {
 		return Score[K]{}
@@ -58,7 +59,7 @@ func (i *item[K]) score() Score[K] {
 	}
 	i.decayMax()
 
-	mixedScore := 5 * (klScore + i.max)
+	mixedScore := 5 * (klScore + i.max) * i.options.weigher.Weight(ctx, id, i.options.clock.Now())
 
 	return Score[K]{
 		Score:       mixedScore,

internal/trending/trending.go

@@ -1,6 +1,7 @@
 package trending
 
 import (
+	"context"
 	"sort"
 	"time"
 
@@ -33,6 +34,7 @@ type options[K comparable] struct {
 	creator              TimeSeriesCreator[K]
 	slidingWindowCreator SlidingWindowCreator[K]
 	clock                timeseries.Clock
+	weigher              Weigher[K]
 
 	halfLife time.Duration
 
@@ -45,8 +47,24 @@ type options[K comparable] struct {
 	countThreshold float64
 }
 
+type Weigher[K comparable] interface {
+	Weight(context.Context, K, time.Time) float64
+}
+
 type Option[K comparable] func(*options[K])
 
+type unityWeigher[K comparable] float64
+
+func (u unityWeigher[K]) Weight(_ context.Context, _ K, _ time.Time) float64 {
+	return float64(u)
+}
+
+func WithWeigher[K comparable](w Weigher[K]) Option[K] {
+	return func(o *options[K]) {
+		o.weigher = w
+	}
+}
+
 func WithTimeSeries[K comparable](creator TimeSeriesCreator[K]) Option[K] {
 	return func(o *options[K]) {
 		o.creator = creator
@@ -164,6 +182,9 @@ func NewScorer[K comparable](options ...Option[K]) Scorer[K] {
 	if scorer.options.clock == nil {
 		scorer.options.clock = timeseries.DefaultClock
 	}
+	if scorer.options.weigher == nil {
+		scorer.options.weigher = unityWeigher[K](1.0)
+	}
 	if scorer.options.slidingWindowCreator == nil {
 		scorer.options.slidingWindowCreator = func(id K) SlidingWindow {
 			return slidingwindow.NewSlidingWindow(
@@ -189,10 +210,10 @@ func (s *Scorer[K]) addToItem(item *item[K], tm time.Time) {
 	item.eventSeries.IncreaseAtTime(1, tm)
 }
 
-func (s *Scorer[K]) Score() Scores[K] {
+func (s *Scorer[K]) Score(ctx context.Context) Scores[K] {
 	var scores Scores[K]
 	for id, item := range s.items {
-		score := item.score()
+		score := item.score(ctx, id)
 		score.ID = id
 		scores = append(scores, score)
 	}

pkg/alerting/alerting.go

@@ -118,6 +118,7 @@ func New(cfg config.Alerting, tgCache talkgroups.Store, opts ...AlertOption) Ale
 		trending.WithScoreThreshold[talkgroups.ID](ScoreThreshold),
 		trending.WithCountThreshold[talkgroups.ID](CountThreshold),
 		trending.WithClock[talkgroups.ID](as.clock),
+		trending.WithWeigher[talkgroups.ID](as.tgCache),
 	)
 
 	return as
@@ -130,13 +131,13 @@ func (as *alerter) Go(ctx context.Context) {
 		log.Error().Err(err).Msg("backfill")
 	}
 
-	as.score(time.Now())
+	as.score(ctx, time.Now())
 	ticker := time.NewTicker(alerterTickInterval)
 
 	for {
 		select {
 		case now := <-ticker.C:
-			as.score(now)
+			as.score(ctx, now)
 			err := as.notify(ctx)
 			if err != nil {
 				log.Error().Err(err).Msg("notify")
@@ -178,7 +179,7 @@ func (as *alerter) eval(ctx context.Context, now time.Time, testMode bool) ([]Al
 
 		if s.Score > as.cfg.AlertThreshold || testMode {
 			if old, inCache := as.alertCache[s.ID]; !inCache || now.Sub(old.Timestamp) > as.renotify {
-				s.Score = as.tgCache.ApplyAlertRules(s, now)
+				s.Score *= as.tgCache.ApplyAlertRules(s.ID, now)
 				a, err := as.makeAlert(ctx, s, origScore)
 				if err != nil {
 					return nil, fmt.Errorf("makeAlert: %w", err)
@@ -385,16 +386,16 @@ func (as *alerter) startBackfill(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	log.Debug().Int("callsCount", count).Str("in", time.Since(now).String()).Int("tgCount", as.scorer.Score().Len()).Msg("backfill finished")
+	log.Debug().Int("callsCount", count).Str("in", time.Since(now).String()).Int("tgCount", as.scorer.Score(ctx).Len()).Msg("backfill finished")
 
 	return nil
 }
 
-func (as *alerter) score(now time.Time) {
+func (as *alerter) score(ctx context.Context, now time.Time) {
 	as.Lock()
 	defer as.Unlock()
 
-	as.scores = as.scorer.Score()
+	as.scores = as.scorer.Score(ctx)
 	as.lastScore = now
 	sort.Sort(as.scores)
 }
@@ -420,7 +421,7 @@ func (as *alerter) backfill(ctx context.Context, since time.Time, until time.Tim
 		}
 		as.scorer.AddEvent(tg, callDate)
 		if as.sim != nil { // step the simulator if it is active
-			as.sim.stepClock(callDate)
+			as.sim.stepClock(ctx, callDate)
 		}
 		count++
 	}

pkg/alerting/simulate.go

@@ -46,12 +46,12 @@ func (s *Simulation) verify() error {
 }
 
 // stepClock is called by backfill during simulation operations.
-func (s *Simulation) stepClock(t time.Time) {
+func (s *Simulation) stepClock(ctx context.Context, t time.Time) {
 	now := s.clock.Now()
 	step := t.Sub(s.lastScore)
 	if step > time.Duration(s.SimInterval) {
 		s.clock += offsetClock(s.SimInterval)
-		s.scores = s.scorer.Score()
+		s.scores = s.scorer.Score(ctx)
 		s.lastScore = now
 	}
 
@@ -85,7 +85,7 @@ func (s *Simulation) Simulate(ctx context.Context) (trending.Scores[talkgroups.I
 	}
 
 	// initial score
-	s.scores = s.scorer.Score()
+	s.scores = s.scorer.Score(ctx)
 	s.lastScore = time.Time(s.ScoreStart)
 
 	ssT := time.Time(s.ScoreStart)

pkg/alerting/stats.html

@@ -85,8 +85,8 @@
       {{ range .Scores }}
       {{ $tg := (index $.TGs .ID) }}
       <tr>
-	<td>{{ $tg.Name_2}}</td>
-	<td>{{ $tg.Name}}</td>
+	<td>{{ $tg.System.Name}}</td>
+	<td>{{ $tg.Talkgroup.Name}}</td>
 	<td>{{  .ID.Talkgroup }}</td>
 	<td>{{ f .Count 0 }}</td>
 	<td>{{ f .RecentCount 0 }}</td>

pkg/server/signals.go

@@ -17,6 +17,7 @@ func (s *Server) huppers() []hupper {
 	return []hupper{
 		s.logger,
 		s.auth,
+		s.tgs,
 	}
 }
 

pkg/talkgroups/alertconfig.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"dynatron.me/x/stillbox/internal/ruletime"
-	"dynatron.me/x/stillbox/internal/trending"
 )
 
 type AlertConfig struct {
@@ -50,15 +49,15 @@ func (ac *AlertConfig) UnmarshalTGRules(tg ID, confBytes []byte) error {
 	return nil
 }
 
-func (ac *AlertConfig) ApplyAlertRules(score trending.Score[ID], t time.Time, coversOpts ...ruletime.CoversOption) float64 {
+func (ac *AlertConfig) ApplyAlertRules(id ID, t time.Time, coversOpts ...ruletime.CoversOption) float64 {
 	ac.RLock()
-	s, has := ac.m[score.ID]
+	s, has := ac.m[id]
 	ac.RUnlock()
 	if !has {
-		return score.Score
+		return 1.0
 	}
 
-	final := score.Score
+	final := 1.0
 
 	for _, ar := range s {
 		if ar.MatchTime(t, coversOpts...) {

pkg/talkgroups/alertconfig_test.go

@@ -126,7 +126,7 @@ func TestAlertConfig(t *testing.T) {
 				ID:    tc.tg,
 				Score: tc.origScore,
 			}
-			assert.Equal(t, tc.expectScore, toFixed(ac.ApplyAlertRules(cs, tc.t), 5))
+			assert.Equal(t, tc.expectScore, toFixed(cs.Score*ac.ApplyAlertRules(cs.ID, tc.t), 5))
 		})
 	}
 }

pkg/talkgroups/cache.go

@@ -6,6 +6,7 @@ import (
 	"sync"
 	"time"
 
+	"dynatron.me/x/stillbox/pkg/config"
 	"dynatron.me/x/stillbox/pkg/database"
 
 	"dynatron.me/x/stillbox/internal/ruletime"
@@ -25,7 +26,7 @@ type Store interface {
 	SystemName(ctx context.Context, id int) (string, bool)
 
 	// ApplyAlertRules applies the score's talkgroup alert rules to the call occurring at t and returns the weighted score.
-	ApplyAlertRules(score trending.Score[ID], t time.Time, coversOpts ...ruletime.CoversOption) float64
+	ApplyAlertRules(id ID, t time.Time, coversOpts ...ruletime.CoversOption) float64
 
 	// Hint hints the Store that the provided talkgroups will be asked for.
 	Hint(ctx context.Context, tgs []ID) error
@@ -35,6 +36,12 @@ type Store interface {
 
 	// Invalidate invalidates any caching in the Store.
 	Invalidate()
+
+	// Include the trending Weigher interface
+	trending.Weigher[ID]
+
+	// Hupper
+	HUP(*config.Config)
 }
 
 type CtxStoreKeyT string
@@ -54,6 +61,10 @@ func StoreFrom(ctx context.Context) Store {
 	return s
 }
 
+func (t *cache) HUP(_ *config.Config) {
+	t.Invalidate()
+}
+
 func (t *cache) Invalidate() {
 	t.Lock()
 	defer t.Unlock()
@@ -145,6 +156,19 @@ func (t *cache) Load(ctx context.Context, tgs []int64) error {
 
 var ErrNotFound = errors.New("talkgroup not found")
 
+func (t *cache) Weight(ctx context.Context, id ID, tm time.Time) float64 {
+	tg, err := t.TG(ctx, id)
+	if err != nil {
+		return 1.0
+	}
+
+	m := float64(tg.Weight)
+
+	m *= t.AlertConfig.ApplyAlertRules(id, tm)
+
+	return float64(tg.Weight)
+}
+
 func (t *cache) TG(ctx context.Context, tg ID) (Talkgroup, error) {
 	t.RLock()
 	rec, has := t.tgs[tg]