Method ServeV1Query

internal/http/query.go:78–142

TODO(barakmich): Turn this into proper middleware.

(w http.ResponseWriter, r *http.Request, params httprouter.Params)

// TODO(barakmich): Turn this into proper middleware.
func (api *API) ServeV1Query(w http.ResponseWriter, r *http.Request, params httprouter.Params) {
	ctx, cancel := api.contextForRequest(r)
	defer cancel()
	l := query.GetLanguage(params.ByName("query_lang"))
	if l == nil {
		jsonResponse(w, http.StatusBadRequest, "Unknown query language.")
		return
	}
	errFunc := defaultErrorFunc
	if l.HTTPError != nil {
		errFunc = l.HTTPError
	}
	select {
	case <-ctx.Done():
		errFunc(w, ctx.Err())
		return
	default:
	}
	h, err := api.GetHandleForRequest(r)
	if err != nil {
		errFunc(w, err)
		return
	}
	if l.HTTPQuery != nil {
		defer r.Body.Close()
		l.HTTPQuery(ctx, h.QuadStore, w, r.Body)
		return
	}
	if l.HTTP == nil {
		errFunc(w, errors.New("HTTP interface is not supported for this query language."))
		return
	}

	par, _ := url.ParseQuery(r.URL.RawQuery)
	limit, _ := strconv.Atoi(par.Get("limit"))
	if limit == 0 {
		limit = 100
	}

	ses := l.HTTP(h.QuadStore)
	bodyBytes, err := ioutil.ReadAll(r.Body)
	if err != nil {
		errFunc(w, err)
		return
	}
	it, err := ses.Execute(ctx, string(bodyBytes), query.Options{
		Collation: query.JSON,
		Limit:     limit,
	})
	if err != nil {
		errFunc(w, err)
		return
	}
	defer it.Close()

	var out []interface{}
	for it.Next(ctx) {
		out = append(out, it.Result())