Split monolithic rule into per-test rules, collect gathers facts only

checker/rules_discovery.go

@@ -0,0 +1,34 @@
+package checker
+
+import (
+	"context"
+
+	sdk "git.happydns.org/checker-sdk-go/checker"
+)
+
+// endpointsDiscoveredRule surfaces the "no producer has published endpoints
+// for this target yet" steady state. Kept as its own rule so it does not
+// contaminate per-endpoint findings when discovery is in flight.
+type endpointsDiscoveredRule struct{}
+
+func (r *endpointsDiscoveredRule) Name() string { return "tls.endpoints_discovered" }
+func (r *endpointsDiscoveredRule) Description() string {
+	return "Verifies that at least one TLS endpoint has been discovered for this target."
+}
+
+func (r *endpointsDiscoveredRule) Evaluate(ctx context.Context, obs sdk.ObservationGetter, _ sdk.CheckerOptions) []sdk.CheckState {
+	data, errSt := loadData(ctx, obs)
+	if errSt != nil {
+		return []sdk.CheckState{*errSt}
+	}
+	if len(data.Probes) == 0 {
+		return []sdk.CheckState{unknownState(
+			"tls.endpoints_discovered.none",
+			"No TLS endpoints have been discovered for this target yet.",
+		)}
+	}
+	return []sdk.CheckState{passState(
+		"tls.endpoints_discovered.ok",
+		"TLS endpoints were discovered for this target.",
+	)}
+}