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rest-entity-rw.go
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rest-entity-rw.go
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/*
* Copyright (c) 2019-2021. 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 (
"io"
restful "github.com/emicklei/go-restful/v3"
validator "github.com/mwitkow/go-proto-validators"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/proto"
)
// ProtoEntityReaderWriter can read and write values using an encoding such as JSON,XML.
type ProtoEntityReaderWriter struct {
}
// Read a serialized version of the value from the request.
// The Request may have a decompressing reader. Depends on Content-Encoding.
func (e *ProtoEntityReaderWriter) Read(req *restful.Request, v interface{}) error {
pb := v.(proto.Message)
bb, ee := io.ReadAll(req.Request.Body)
if ee != nil {
return ee
}
if e := protojson.Unmarshal(bb, pb); e != nil {
return e
}
if valid, ok := pb.(validator.Validator); ok {
return valid.Validate()
}
return nil
}
// Write a serialized version of the value on the response.
// The Response may have a compressing writer. Depends on Accept-Encoding.
// status should be a valid Http Status code
func (e *ProtoEntityReaderWriter) Write(resp *restful.Response, status int, v interface{}) error {
if v == nil {
resp.WriteHeader(status)
// do not write a nil representation
return nil
}
resp.Header().Set(restful.HEADER_ContentType, "application/json")
resp.WriteHeader(status)
bb, ee := protojson.Marshal(v.(proto.Message))
if ee != nil {
return ee
}
_, er := resp.Write(bb)
return er
}