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rest-error-writer.go
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/
rest-error-writer.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package service
import (
"github.com/emicklei/go-restful"
"go.uber.org/zap"
"github.com/micro/go-micro/errors"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/proto/rest"
)
type restErrorEmitter func(req *restful.Request, resp *restful.Response, err error)
// RestError500 logs the error with context and write an Error 500 on the response.
func RestError500(req *restful.Request, resp *restful.Response, err error) {
log.Logger(req.Request.Context()).Error("Rest Error 500", zap.Error(err))
resp.AddHeader("Content-Type", "application/json")
e := &rest.Error{
Title: err.Error(),
Detail: err.Error(),
}
if parsed := errors.Parse(err.Error()); parsed.Status != "" && parsed.Detail != "" {
e.Title = parsed.Detail
e.Detail = parsed.Status + ": " + parsed.Detail
}
resp.WriteHeaderAndEntity(500, e)
}
// RestError404 logs the error with context and writes an Error 404 on the response.
func RestError404(req *restful.Request, resp *restful.Response, err error) {
log.Logger(req.Request.Context()).Error("Rest Error 404", zap.Error(err))
resp.AddHeader("Content-Type", "application/json")
e := &rest.Error{
Title: err.Error(),
Detail: err.Error(),
}
if parsed := errors.Parse(err.Error()); parsed.Status != "" && parsed.Detail != "" {
e.Title = parsed.Detail
e.Detail = parsed.Status + ": " + parsed.Detail
}
resp.WriteHeaderAndEntity(404, e)
}
// RestError403 logs the error with context and write an Error 403 on the response.
func RestError403(req *restful.Request, resp *restful.Response, err error) {
log.Logger(req.Request.Context()).Error("Rest Error 403", zap.Error(err))
resp.AddHeader("Content-Type", "application/json")
e := &rest.Error{
Title: err.Error(),
Detail: err.Error(),
}
if parsed := errors.Parse(err.Error()); parsed.Status != "" && parsed.Detail != "" {
e.Title = parsed.Detail
e.Detail = parsed.Status + ": " + parsed.Detail
}
resp.WriteHeaderAndEntity(403, e)
}
// RestError401 logs the error with context and write an Error 401 on the response.
func RestError401(req *restful.Request, resp *restful.Response, err error) {
log.Logger(req.Request.Context()).Error("Rest Error 401", zap.Error(err))
resp.AddHeader("Content-Type", "application/json")
e := &rest.Error{
Title: err.Error(),
Detail: err.Error(),
}
if parsed := errors.Parse(err.Error()); parsed.Status != "" && parsed.Detail != "" {
e.Title = parsed.Detail
e.Detail = parsed.Status + ": " + parsed.Detail
}
resp.WriteHeaderAndEntity(401, e)
}
// RestErrorDetect parses the error and tries to detect the correct code.
func RestErrorDetect(req *restful.Request, resp *restful.Response, err error, defaultCode ...int32) {
emitters := map[int32]restErrorEmitter{
500: RestError500,
404: RestError404,
403: RestError403,
401: RestError401,
}
erCode := errors.Parse(err.Error()).Code
if f, ok := emitters[erCode]; ok {
f(req, resp, err)
return
} else if len(defaultCode) > 0 {
if f, ok := emitters[defaultCode[0]]; ok {
f(req, resp, err)
return
}
}
emitters[500](req, resp, err)
}