Improve API endpoints

pkg/api/handler_entrypoint.go

@@ -0,0 +1,70 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"sort"
+	"strconv"
+
+	"github.com/containous/mux"
+	"github.com/containous/traefik/pkg/config/static"
+	"github.com/containous/traefik/pkg/log"
+)
+
+type entryPointRepresentation struct {
+	*static.EntryPoint
+	Name string `json:"name,omitempty"`
+}
+
+func (h Handler) getEntryPoints(rw http.ResponseWriter, request *http.Request) {
+	results := make([]entryPointRepresentation, 0, len(h.staticConfig.EntryPoints))
+
+	for name, ep := range h.staticConfig.EntryPoints {
+		results = append(results, entryPointRepresentation{
+			EntryPoint: ep,
+			Name:       name,
+		})
+	}
+
+	sort.Slice(results, func(i, j int) bool {
+		return results[i].Name < results[j].Name
+	})
+
+	pageInfo, err := pagination(request, len(results))
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	rw.Header().Set("Content-Type", "application/json")
+	rw.Header().Set(nextPageHeader, strconv.Itoa(pageInfo.nextPage))
+
+	err = json.NewEncoder(rw).Encode(results[pageInfo.startIndex:pageInfo.endIndex])
+	if err != nil {
+		log.FromContext(request.Context()).Error(err)
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+	}
+}
+
+func (h Handler) getEntryPoint(rw http.ResponseWriter, request *http.Request) {
+	entryPointID := mux.Vars(request)["entryPointID"]
+
+	ep, ok := h.staticConfig.EntryPoints[entryPointID]
+	if !ok {
+		http.NotFound(rw, request)
+		return
+	}
+
+	result := entryPointRepresentation{
+		EntryPoint: ep,
+		Name:       entryPointID,
+	}
+
+	rw.Header().Set("Content-Type", "application/json")
+
+	err := json.NewEncoder(rw).Encode(result)
+	if err != nil {
+		log.FromContext(request.Context()).Error(err)
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+	}
+}