Publish ITWorx Pulse source

internal/networkapi/handler.go

@@ -0,0 +1,43 @@
+package networkapi
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"net/http"
+
+	"github.com/itworx/pulse/internal/auth"
+	"github.com/itworx/pulse/internal/network"
+	"github.com/itworx/pulse/internal/problem"
+)
+
+type Handler struct{ Provider network.Provider }
+
+func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet || r.URL.Path != "/api/v1/network" {
+		http.NotFound(w, r)
+		return
+	}
+	if _, ok := auth.PrincipalFromContext(r.Context()); !ok {
+		problem.Write(w, r, http.StatusUnauthorized, "UNAUTHORIZED", "Authentication required", "Authentication is required to read network health.", nil)
+		return
+	}
+	if err := r.Context().Err(); err != nil {
+		return
+	}
+	if h.Provider == nil {
+		problem.Write(w, r, http.StatusServiceUnavailable, "NETWORK_UNAVAILABLE", "Network health not available", "De netwerkgezondheid is niet beschikbaar.", nil)
+		return
+	}
+	snapshot, err := h.Provider.Snapshot(r.Context())
+	if err != nil {
+		if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+			return
+		}
+		problem.Write(w, r, http.StatusServiceUnavailable, "NETWORK_UNAVAILABLE", "Network health not available", "De netwerkgezondheid kon niet worden gelezen.", nil)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Cache-Control", "private, max-age=5")
+	_ = json.NewEncoder(w).Encode(snapshot)
+}