Example #1
0
File: api.go Project: vozhyk-/gohan
func handleError(writer http.ResponseWriter, err error) {
	switch err := err.(type) {
	default:
		middleware.HTTPJSONError(writer, err.Error(), http.StatusInternalServerError)
	case resources.ResourceError:
		code := problemToResponseCode(err.Problem)
		middleware.HTTPJSONError(writer, err.Message, code)
	case extension.Error:
		message, code := unwrapExtensionException(err.ExceptionInfo)
		if 200 <= code && code < 300 {
			writer.WriteHeader(code)
			routes.ServeJson(writer, message)
		} else {
			middleware.HTTPJSONError(writer, message["error"].(string), code)
		}
	}
}
Example #2
0
func serveResponse(w http.ResponseWriter, context map[string]interface{}) {
	response := context["response"]
	responseCode, ok := context["code"].(int)
	if !ok {
		responseCode = 200
	}
	if 200 <= responseCode && responseCode < 300 {
		w.WriteHeader(responseCode)
		routes.ServeJson(w, response)
	} else {
		message := util.MaybeMap(context["exception"])
		middleware.HTTPJSONError(w, message["message"].(string), responseCode)
	}
}
Example #3
0
File: api.go Project: vozhyk-/gohan
//MapRouteBySchema setup api route by schema
func MapRouteBySchema(server *Server, dataStore db.DB, s *schema.Schema) {
	if s.IsAbstract() {
		return
	}
	route := server.martini

	singleURL := s.GetSingleURL()
	pluralURL := s.GetPluralURL()
	singleURLWithParents := s.GetSingleURLWithParents()
	pluralURLWithParents := s.GetPluralURLWithParents()

	//load extension environments
	environmentManager := extension.GetManager()
	if _, ok := environmentManager.GetEnvironment(s.ID); !ok {
		env, err := server.NewEnvironmentForPath(s.ID, pluralURL)
		if err != nil {
			log.Fatal(fmt.Sprintf("[%s] %v", pluralURL, err))
		}
		environmentManager.RegisterEnvironment(s.ID, env)
	}

	log.Debug("[Plural Path] %s", pluralURL)
	log.Debug("[Singular Path] %s", singleURL)
	log.Debug("[Plural Path With Parents] %s", pluralURLWithParents)
	log.Debug("[Singular Path With Parents] %s", singleURLWithParents)

	//setup list route
	getPluralFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		if err := resources.GetMultipleResources(context, dataStore, s, r.URL.Query()); err != nil {
			handleError(w, err)
			return
		}
		w.Header().Add("X-Total-Count", fmt.Sprint(context["total"]))
		routes.ServeJson(w, context["response"])
	}
	route.Get(pluralURL, middleware.Authorization(schema.ActionRead), getPluralFunc)
	route.Get(pluralURLWithParents, middleware.Authorization(schema.ActionRead), func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
		getPluralFunc(w, r, p, identityService, context)
	})

	//setup show route
	getSingleFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		id := p["id"]
		if err := resources.GetSingleResource(context, dataStore, s, id); err != nil {
			handleError(w, err)
			return
		}
		routes.ServeJson(w, context["response"])
	}
	route.Get(singleURL, middleware.Authorization(schema.ActionRead), getSingleFunc)
	route.Get(singleURLWithParents, middleware.Authorization(schema.ActionRead), func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
		getSingleFunc(w, r, p, identityService, context)
	})

	//setup delete route
	deleteSingleFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		id := p["id"]
		if err := resources.DeleteResource(context, dataStore, s, id); err != nil {
			handleError(w, err)
			return
		}
		w.WriteHeader(http.StatusNoContent)
	}
	route.Delete(singleURL, middleware.Authorization(schema.ActionDelete), deleteSingleFunc)
	route.Delete(singleURLWithParents, middleware.Authorization(schema.ActionDelete), func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
		deleteSingleFunc(w, r, p, identityService, context)
	})

	//setup create route
	postPluralFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		dataMap, err := middleware.ReadJSON(r)
		if err != nil {
			handleError(w, resources.NewResourceError(err, fmt.Sprintf("Failed to parse data: %s", err), resources.WrongData))
			return
		}
		dataMap = removeResourceWrapper(s, dataMap)
		if s.Parent != "" {
			if _, ok := dataMap[s.ParentID()]; !ok {
				queryParams := r.URL.Query()
				parentIDParam := queryParams.Get(s.ParentID())
				if parentIDParam != "" {
					dataMap[s.ParentID()] = parentIDParam
				}
			}
		}
		if err := resources.CreateResource(context, dataStore, identityService, s, dataMap); err != nil {
			handleError(w, err)
			return
		}
		w.WriteHeader(http.StatusCreated)
		routes.ServeJson(w, context["response"])
	}
	route.Post(pluralURL, middleware.Authorization(schema.ActionCreate), postPluralFunc)
	route.Post(pluralURLWithParents, middleware.Authorization(schema.ActionCreate),
		func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
			addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
			postPluralFunc(w, r, p, identityService, context)
		})

	//setup create or update route
	putSingleFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		id := p["id"]
		dataMap, err := middleware.ReadJSON(r)
		if err != nil {
			handleError(w, resources.NewResourceError(err, fmt.Sprintf("Failed to parse data: %s", err), resources.WrongData))
			return
		}
		dataMap = removeResourceWrapper(s, dataMap)
		if isCreated, err := resources.CreateOrUpdateResource(
			context, dataStore, identityService, s, id, dataMap); err != nil {
			handleError(w, err)
			return
		} else if isCreated {
			w.WriteHeader(http.StatusCreated)
		}
		routes.ServeJson(w, context["response"])
	}
	route.Put(singleURL, middleware.Authorization(schema.ActionUpdate), putSingleFunc)
	route.Put(singleURLWithParents, middleware.Authorization(schema.ActionUpdate),
		func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
			addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
			putSingleFunc(w, r, p, identityService, context)
		})

	//setup update route
	patchSingleFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
		addJSONContentTypeHeader(w)
		fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
		id := p["id"]
		dataMap, err := middleware.ReadJSON(r)
		if err != nil {
			handleError(w, resources.NewResourceError(err, fmt.Sprintf("Failed to parse data: %s", err), resources.WrongData))
			return
		}
		dataMap = removeResourceWrapper(s, dataMap)
		if err := resources.UpdateResource(
			context, dataStore, identityService, s, id, dataMap); err != nil {
			handleError(w, err)
			return
		}
		routes.ServeJson(w, context["response"])
	}
	route.Patch(singleURL, middleware.Authorization(schema.ActionUpdate), patchSingleFunc)
	route.Patch(singleURLWithParents, middleware.Authorization(schema.ActionUpdate),
		func(w http.ResponseWriter, r *http.Request, p martini.Params, identityService middleware.IdentityService, context middleware.Context) {
			addParamToQuery(r, schema.FormatParentID(s.Parent), p[s.Parent])
			patchSingleFunc(w, r, p, identityService, context)
		})

	//Custom action support
	for _, actionExt := range s.Actions {
		action := actionExt
		ActionFunc := func(w http.ResponseWriter, r *http.Request, p martini.Params,
			identityService middleware.IdentityService, auth schema.Authorization, context middleware.Context) {
			addJSONContentTypeHeader(w)
			fillInContext(context, dataStore, r, w, s, p, server.sync, identityService, server.queue)
			id := p["id"]
			input := make(map[string]interface{})
			if action.InputSchema != nil {
				var err error
				input, err = middleware.ReadJSON(r)
				if err != nil {
					handleError(w, resources.NewResourceError(err, fmt.Sprintf("Failed to parse data: %s", err), resources.WrongData))
					return
				}
			}

			// TODO use authorization middleware
			manager := schema.GetManager()
			path := r.URL.Path
			policy, role := manager.PolicyValidate(action.ID, path, auth)
			if policy == nil {
				middleware.HTTPJSONError(w, fmt.Sprintf("No matching policy: %s %s %s", action, path, s.Actions), http.StatusUnauthorized)
				return
			}
			context["policy"] = policy
			context["tenant_id"] = auth.TenantID()
			context["auth_token"] = auth.AuthToken()
			context["role"] = role
			context["catalog"] = auth.Catalog()
			context["auth"] = auth

			if err := resources.ActionResource(
				context, dataStore, identityService, s, action, id, input); err != nil {
				handleError(w, err)
				return
			}
			routes.ServeJson(w, context["response"])
		}
		route.AddRoute(action.Method, s.GetActionURL(action.Path), ActionFunc)
	}
}