include db for gitea build

internal/alerts/filter.go

@@ -0,0 +1,39 @@
+package alerts
+
+import (
+	"git.tornberg.me/go-otel/internal/features"
+	"git.tornberg.me/go-otel/internal/triage"
+)
+
+// TriageOf classifies a pattern's example event with the deterministic rules.
+func TriageOf(e features.Event) triage.Result {
+	return triage.Classify(triage.Input{Service: e.Service, Kind: e.Kind, Status: e.StatusCode, Route: e.Route, Title: e.SpanName, Message: e.Message,
+		IsTimeout: e.IsTimeout, IsCancellation: e.IsCancellation, IsRetry: e.IsRetry})
+}
+
+// FilterActionable keeps only patterns whose category should page a human
+// (unless keepMuted), recomputing each spike's excess so a probe storm cannot
+// alert by itself. muted, when non-nil, counts what was dropped per category.
+func FilterActionable(spikes []features.Spike, keepMuted bool, muted map[triage.Category]int) []features.Spike {
+	var out []features.Spike
+	for _, sp := range spikes {
+		var kept []features.PatternDelta
+		sp.Excess = 0
+		for _, p := range sp.Patterns {
+			c := TriageOf(p.Example).Category
+			if !keepMuted && !c.Actionable() {
+				if muted != nil {
+					muted[c]++
+				}
+				continue
+			}
+			kept = append(kept, p)
+			sp.Excess += p.Excess
+		}
+		if len(kept) > 0 {
+			sp.Patterns = kept
+			out = append(out, sp)
+		}
+	}
+	return out
+}