minio/pkg/rpc/json2/client.go
Harshavardhana 86409fa93d
add audit/admin trace support for browser requests (#10947)
To support this functionality we had to fork
the gorilla/rpc package with relevant changes
2020-11-20 22:52:17 -08:00

84 lines
2.3 KiB
Go

// Copyright 2009 The Go Authors. All rights reserved.
// Copyright 2012 The Gorilla Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Copyright 2020 MinIO, Inc. All rights reserved.
// forked from https://github.com/gorilla/rpc/v2
// modified to be used with MinIO under Apache
// 2.0 license that can be found in the LICENSE file.
package json2
import (
"io"
"math/rand"
jsoniter "github.com/json-iterator/go"
)
// ----------------------------------------------------------------------------
// Request and Response
// ----------------------------------------------------------------------------
// clientRequest represents a JSON-RPC request sent by a client.
type clientRequest struct {
// JSON-RPC protocol.
Version string `json:"jsonrpc"`
// A String containing the name of the method to be invoked.
Method string `json:"method"`
// Object to pass as request parameter to the method.
Params interface{} `json:"params"`
// The request id. This can be of any type. It is used to match the
// response with the request that it is replying to.
Id uint64 `json:"id"`
}
// clientResponse represents a JSON-RPC response returned to a client.
type clientResponse struct {
Version string `json:"jsonrpc"`
Result *jsoniter.RawMessage `json:"result"`
Error *jsoniter.RawMessage `json:"error"`
}
// EncodeClientRequest encodes parameters for a JSON-RPC client request.
func EncodeClientRequest(method string, args interface{}) ([]byte, error) {
c := &clientRequest{
Version: "2.0",
Method: method,
Params: args,
Id: uint64(rand.Int63()),
}
var json = jsoniter.ConfigCompatibleWithStandardLibrary
return json.Marshal(c)
}
// DecodeClientResponse decodes the response body of a client request into
// the interface reply.
func DecodeClientResponse(r io.Reader, reply interface{}) error {
var c clientResponse
var json = jsoniter.ConfigCompatibleWithStandardLibrary
if err := json.NewDecoder(r).Decode(&c); err != nil {
return err
}
if c.Error != nil {
jsonErr := &Error{}
if err := json.Unmarshal(*c.Error, jsonErr); err != nil {
return &Error{
Code: E_SERVER,
Message: string(*c.Error),
}
}
return jsonErr
}
if c.Result == nil {
return ErrNullResult
}
return json.Unmarshal(*c.Result, reply)
}