api: remove service health from prometheus, implement godoxy metrics

internal/metrics/period/handler.go

@@ -0,0 +1,49 @@
+package period
+
+import (
+	"net/http"
+
+	"github.com/coder/websocket"
+	"github.com/coder/websocket/wsjson"
+	"github.com/yusing/go-proxy/internal/api/v1/utils"
+	config "github.com/yusing/go-proxy/internal/config/types"
+)
+
+func (p *Poller[T, AggregateT]) lastResultHandler(w http.ResponseWriter, r *http.Request) {
+	info := p.GetLastResult()
+	if info == nil {
+		http.Error(w, "no system info", http.StatusNoContent)
+		return
+	}
+	utils.RespondJSON(w, r, info)
+}
+
+func (p *Poller[T, AggregateT]) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	period := r.URL.Query().Get("period")
+	if period == "" {
+		p.lastResultHandler(w, r)
+		return
+	}
+	periodFilter := Filter(period)
+	if !periodFilter.IsValid() {
+		http.Error(w, "invalid period", http.StatusBadRequest)
+		return
+	}
+	rangeData := p.Get(periodFilter)
+	if len(rangeData) == 0 {
+		http.Error(w, "no data", http.StatusNoContent)
+		return
+	}
+	if p.aggregator != nil {
+		aggregated := p.aggregator(rangeData...)
+		utils.RespondJSON(w, r, aggregated)
+	} else {
+		utils.RespondJSON(w, r, rangeData)
+	}
+}
+
+func (p *Poller[T, AggregateT]) ServeWS(cfg config.ConfigInstance, w http.ResponseWriter, r *http.Request) {
+	utils.PeriodicWS(cfg, w, r, p.interval, func(conn *websocket.Conn) error {
+		return wsjson.Write(r.Context(), conn, p.GetLastResult())
+	})
+}