Add bucket info handler

Signed-off-by: Evgeniy Kulikov <kim@nspcc.ru>

api/handler/info.go

@@ -0,0 +1,40 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+	"github.com/nspcc-dev/neofs-s3-gate/api"
+	"go.uber.org/zap"
+)
+
+func (h *handler) GetBucketLocationHandler(w http.ResponseWriter, r *http.Request) {
+	var (
+		bkt = mux.Vars(r)["bucket"]
+		rid = api.GetRequestID(r.Context())
+	)
+
+	if _, err := h.obj.GetBucketInfo(r.Context(), bkt); err != nil {
+		h.log.Error("something went wrong",
+			zap.String("request_id", rid),
+			zap.Error(err))
+
+		api.WriteErrorResponse(r.Context(), w, api.Error{
+			Code:           api.GetAPIError(api.ErrInternalError).Code,
+			Description:    err.Error(),
+			HTTPStatusCode: http.StatusInternalServerError,
+		}, r.URL)
+
+		return
+	} else if err = api.EncodeToResponse(w, LocationResponse{Location: ""}); err != nil {
+		h.log.Error("could not write response",
+			zap.String("request_id", rid),
+			zap.Error(err))
+
+		api.WriteErrorResponse(r.Context(), w, api.Error{
+			Code:           api.GetAPIError(api.ErrInternalError).Code,
+			Description:    err.Error(),
+			HTTPStatusCode: http.StatusInternalServerError,
+		}, r.URL)
+	}
+}