feat(alert): summarize Grafana and Alertmanager payloads

Extract a readable title and severity from webhook bodies and keep the raw JSON available for the raw view.
2026-10-11 12:04:41 +03:30
parent 67a843b1e0
commit 45f18ded00
2 changed files with 200 additions and 0 deletions
@@ -0,0 +1,61 @@
+package alert
+
+import (
+	"strings"
+	"testing"
+)
+
+const grafana = `{
+  "status": "firing",
+  "title": "DiskFull",
+  "commonLabels": {"alertname": "DiskFull", "severity": "critical"},
+  "commonAnnotations": {"summary": "disk > 90", "description": "host a"},
+  "alerts": [
+    {"status": "firing", "labels": {"alertname": "DiskFull", "severity": "critical"}, "annotations": {"summary": "disk > 90"}}
+  ]
+}`
+
+func TestTitleSeverityPrefersNtfyTitle(t *testing.T) {
+	title, sev := TitleSeverity("from ntfy", grafana)
+	if title != "from ntfy" || sev != "firing" {
+		t.Fatalf("%q %q", title, sev)
+	}
+	title, sev = TitleSeverity("", grafana)
+	if title != "DiskFull" || sev != "firing" {
+		t.Fatalf("%q %q", title, sev)
+	}
+	title, sev = TitleSeverity("", "plain body")
+	if title != "plain body" || sev != "" {
+		t.Fatalf("%q %q", title, sev)
+	}
+}
+
+func TestTone(t *testing.T) {
+	if Tone("firing", 3) != "bad" || Tone("resolved", 5) != "ok" || Tone("", 5) != "bad" || Tone("", 4) != "warn" || Tone("", 1) != "dim" {
+		t.Fatal(Tone("firing", 3), Tone("resolved", 5), Tone("", 5), Tone("", 4), Tone("", 1))
+	}
+}
+
+func TestBodyView(t *testing.T) {
+	view := BodyView(grafana, false)
+	if !containsAll(view, "status: firing", "alert: DiskFull", "summary: disk > 90", "alerts:") {
+		t.Fatalf("%s", view)
+	}
+	raw := BodyView(grafana, true)
+	if !containsAll(raw, "\"commonLabels\"", "DiskFull") {
+		t.Fatalf("%s", raw)
+	}
+	pretty := BodyView(`{"a":1}`, false)
+	if !strings.Contains(pretty, "\"a\": 1") {
+		t.Fatalf("%s", pretty)
+	}
+}
+
+func containsAll(s string, parts ...string) bool {
+	for _, p := range parts {
+		if !strings.Contains(s, p) {
+			return false
+		}
+	}
+	return true
+}