agola/internal/services/gateway/api/repos.go
Simone Gotti 3642be6f21 */api: Use helpers for error handling
* client: always parse the json error message field and return its contents
* Use ErrBadRequest and ErrNotFound in every handler and command
* Gateway: by default pass underlying service error (configstore, runservice) to
client keeping the status code and message. In future, if some errors must be
masked, we should change the specific parts that need special handling.
2019-04-09 14:53:00 +02:00

96 lines
2.1 KiB
Go

// Copyright 2019 Sorint.lab
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
// See the License for the specific language governing permissions and
// limitations under the License.
package api
import (
"io"
"net/http"
"net/url"
"go.uber.org/zap"
"github.com/gorilla/mux"
)
type ReposHandler struct {
log *zap.SugaredLogger
gitServerURL string
}
func NewReposHandler(logger *zap.Logger, gitServerURL string) *ReposHandler {
return &ReposHandler{log: logger.Sugar(), gitServerURL: gitServerURL}
}
func (h *ReposHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
vars := mux.Vars(r)
path := vars["rest"]
h.log.Infof("path: %s", path)
u, err := url.Parse(h.gitServerURL)
if err != nil {
h.log.Errorf("err: %+v", err)
httpError(w, err)
return
}
u.Path = path
u.RawQuery = r.URL.RawQuery
h.log.Infof("u: %s", u.String())
// TODO(sgotti) Check authorized call from client
defer r.Body.Close()
// proxy all the request body to the destination server
req, err := http.NewRequest(r.Method, u.String(), r.Body)
req = req.WithContext(ctx)
if err != nil {
h.log.Errorf("err: %+v", err)
httpError(w, err)
return
}
// copy request headers
for k, vv := range r.Header {
for _, v := range vv {
req.Header.Add(k, v)
}
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
h.log.Errorf("err: %+v", err)
httpError(w, err)
return
}
// copy response headers
for k, vv := range resp.Header {
for _, v := range vv {
w.Header().Add(k, v)
}
}
// copy status
w.WriteHeader(resp.StatusCode)
defer resp.Body.Close()
// copy response body
if _, err := io.Copy(w, resp.Body); err != nil {
h.log.Errorf("err: %+v", err)
httpError(w, err)
return
}
}