131 lines
3.3 KiB
Go
131 lines
3.3 KiB
Go
/*
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* Copyright 2019 Banco Bilbao Vizcaya Argentaria, S.A.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package control
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import (
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"encoding/json"
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"io/ioutil"
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"log"
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"net/http"
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"github.com/google/uuid"
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"github.com/gorilla/mux"
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"github.com/BBVA/kapow/internal/server/model"
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"github.com/BBVA/kapow/internal/server/user"
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)
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// Run must start the control server in a specific address
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func Run(bindAddr string) {
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log.Fatal(http.ListenAndServe(bindAddr, configRouter()))
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}
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func configRouter() *mux.Router {
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r := mux.NewRouter()
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r.HandleFunc("/routes/{id}", removeRoute).
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Methods(http.MethodDelete)
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r.HandleFunc("/routes/{id}", getRoute).
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Methods(http.MethodGet)
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r.HandleFunc("/routes", listRoutes).
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Methods(http.MethodGet)
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r.HandleFunc("/routes", addRoute).
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Methods(http.MethodPost)
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return r
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}
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var funcRemove func(id string) error = user.Routes.Delete
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func removeRoute(res http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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id := vars["id"]
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if err := funcRemove(id); err != nil {
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res.WriteHeader(http.StatusNotFound)
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return
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}
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res.WriteHeader(http.StatusNoContent)
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}
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var funcList func() []model.Route = user.Routes.List
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func listRoutes(res http.ResponseWriter, req *http.Request) {
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list := funcList()
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listBytes, _ := json.Marshal(list)
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res.Header().Set("Content-Type", "application/json")
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_, _ = res.Write(listBytes)
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}
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var funcAdd func(model.Route) model.Route = user.Routes.Append
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var idGenerator = uuid.NewUUID
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var pathValidator func(string) error = func(path string) error {
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return mux.NewRouter().NewRoute().BuildOnly().Path(path).GetError()
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}
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func addRoute(res http.ResponseWriter, req *http.Request) {
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var route model.Route
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payload, _ := ioutil.ReadAll(req.Body)
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err := json.Unmarshal(payload, &route)
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if err != nil {
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res.WriteHeader(http.StatusBadRequest)
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return
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}
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if route.Method == "" {
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res.WriteHeader(http.StatusUnprocessableEntity)
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return
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}
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if route.Pattern == "" {
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res.WriteHeader(http.StatusUnprocessableEntity)
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return
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}
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err = pathValidator(route.Pattern)
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if err != nil {
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res.WriteHeader(http.StatusUnprocessableEntity)
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return
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}
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id, err := idGenerator()
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if err != nil {
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res.WriteHeader(http.StatusInternalServerError)
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return
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}
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route.ID = id.String()
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created := funcAdd(route)
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createdBytes, _ := json.Marshal(created)
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res.WriteHeader(http.StatusCreated)
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res.Header().Set("Content-Type", "application/json")
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_, _ = res.Write(createdBytes)
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}
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var funcGet func(string) (model.Route, error) = user.Routes.Get
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func getRoute(res http.ResponseWriter, req *http.Request) {
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id := mux.Vars(req)["id"]
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if r, err := funcGet(id); err != nil {
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res.WriteHeader(http.StatusNotFound)
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} else {
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res.Header().Set("Content-Type", "application/json")
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rBytes, _ := json.Marshal(r)
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_, _ = res.Write(rBytes)
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}
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}
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