Expand UPS telemetry, charts and raw diagnostics with power estimates

ups_preview_test.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestUPSPreview(t *testing.T) {
+	if os.Getenv("DASHBOARD_UPS_PREVIEW") != "1" {
+		t.Skip("manual visual fixture")
+	}
+	s, a := trafficFixture(t)
+	_ = a
+	u := upsFromValues("NUT", "cyberpower", parseColonValues(cyberPowerSample))
+	m := dashboardMetrics{UPS: u, CPU: CPUMetrics{CPUStatic: CPUStatic{Model: "DEMO / искусственные данные"}, Temperatures: []Temperature{}}, Timestamp: time.Now()}
+	s.AddEntityMetrics(m)
+	for i := 0; i < 30; i++ {
+		ts := time.Now().Add(time.Duration(i-30) * time.Minute).Unix()
+		v := 220 + float64(i%6)
+		out := 225.0
+		power := 150 + float64(i)
+		runtime := 450.0
+		freq := 49.8
+		bat := 13.4
+		s.AddEntityHistory("ups-voltage", "Вход", ts, &v, nil)
+		s.AddEntityHistory("ups-voltage", "Выход", ts, &out, nil)
+		s.AddEntityHistory("ups-power", "Расчётная ≈", ts, &power, nil)
+		s.AddEntityHistory("ups-runtime", "Автономность", ts, &runtime, nil)
+		s.AddEntityHistory("ups-frequency", "Частота", ts, &freq, nil)
+		s.AddEntityHistory("ups-battery", "Батарея", ts, &bat, nil)
+		p := historyPointFromMetrics(m)
+		p.Timestamp = ts
+		s.AddHistory(p)
+	}
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/" {
+			writeJSON(w, map[string]any{}, nil)
+			return
+		}
+		w.Header().Set("Content-Type", "text/html")
+		w.Write([]byte(strings.Replace(dashboardHTML, "<title>", "<title>DEMO / ", 1)))
+	})
+	mux.HandleFunc("/api/events", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "text/event-stream")
+		b, _ := json.Marshal(m)
+		fmt.Fprintf(w, "data: %s\n\n", b)
+		w.(http.Flusher).Flush()
+		<-r.Context().Done()
+	})
+	mux.HandleFunc("/api/history", func(w http.ResponseWriter, r *http.Request) {
+		h, _ := strconv.Atoi(r.URL.Query().Get("hours"))
+		v, e := s.History(h)
+		writeJSON(w, v, e)
+	})
+	mux.HandleFunc("/api/entity-history", func(w http.ResponseWriter, r *http.Request) {
+		h, _ := strconv.Atoi(r.URL.Query().Get("hours"))
+		v, e := s.EntityHistory(r.URL.Query().Get("kind"), h)
+		writeJSON(w, v, e)
+	})
+	t.Fatal(http.ListenAndServe("127.0.0.1:19106", mux))
+}