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// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package concepts
import (
"context"
"net/http"
"github.com/weaviate/weaviate/entities/models"
)
type RESTHandlers struct {
inspector Inspector
}
func NewRESTHandlers(inspector Inspector) *RESTHandlers {
return &RESTHandlers{
inspector: inspector,
}
}
func (h *RESTHandlers) Handler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.Method {
case http.MethodGet:
h.get(w, r)
default:
w.WriteHeader(http.StatusMethodNotAllowed)
}
})
}
func (h *RESTHandlers) get(w http.ResponseWriter, r *http.Request) {
if len(r.URL.String()) == 0 || h.extractConcept(r) == "" {
w.WriteHeader(http.StatusNotFound)
return
}
h.getOne(w, r)
}
func (h *RESTHandlers) getOne(w http.ResponseWriter, r *http.Request) {
concept := h.extractConcept(r)
res, err := h.inspector.GetWords(r.Context(), concept)
if err != nil {
h.writeError(w, err, http.StatusBadRequest)
return
}
json, err := res.MarshalBinary()
if err != nil {
h.writeError(w, err, http.StatusInternalServerError)
return
}
w.Header().Add("content-type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(json)
}
func (h *RESTHandlers) writeError(w http.ResponseWriter, err error, code int) {
res := &models.ErrorResponse{Error: []*models.ErrorResponseErrorItems0{{
Message: err.Error(),
}}}
json, mErr := res.MarshalBinary()
if mErr != nil {
// fallback to text
w.Header().Add("content-type", "text/plain")
w.WriteHeader(code)
w.Write([]byte(err.Error()))
}
w.Header().Add("content-type", "application/json")
w.WriteHeader(code)
w.Write(json)
}
func (h *RESTHandlers) extractConcept(r *http.Request) string {
// cutoff leading slash, consider the rest the concept
return r.URL.String()[1:]
}
type Inspector interface {
GetWords(ctx context.Context, words string) (*models.C11yWordsResponse, error)
}
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