276 lines
7.2 KiB
Go
276 lines
7.2 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library 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 Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package rpc
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
type Service struct{}
|
|
|
|
type Args struct {
|
|
S string
|
|
}
|
|
|
|
func (s *Service) NoArgsRets() {
|
|
}
|
|
|
|
type Result struct {
|
|
String string
|
|
Int int
|
|
Args *Args
|
|
}
|
|
|
|
func (s *Service) Echo(str string, i int, args *Args) Result {
|
|
return Result{str, i, args}
|
|
}
|
|
|
|
func (s *Service) EchoWithCtx(ctx context.Context, str string, i int, args *Args) Result {
|
|
return Result{str, i, args}
|
|
}
|
|
|
|
func (s *Service) Rets() (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
func (s *Service) InvalidRets1() (error, string) {
|
|
return nil, ""
|
|
}
|
|
|
|
func (s *Service) InvalidRets2() (string, string) {
|
|
return "", ""
|
|
}
|
|
|
|
func (s *Service) InvalidRets3() (string, string, error) {
|
|
return "", "", nil
|
|
}
|
|
|
|
func (s *Service) Subscription(ctx context.Context) (Subscription, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (s *Service) SubsriptionWithArgs(ctx context.Context, a, b int) (Subscription, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func TestServerRegisterName(t *testing.T) {
|
|
server := NewServer()
|
|
service := new(Service)
|
|
|
|
if err := server.RegisterName("calc", service); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
|
|
if len(server.services) != 2 {
|
|
t.Fatalf("Expected 2 service entries, got %d", len(server.services))
|
|
}
|
|
|
|
svc, ok := server.services["calc"]
|
|
if !ok {
|
|
t.Fatalf("Expected service calc to be registered")
|
|
}
|
|
|
|
if len(svc.callbacks) != 4 {
|
|
t.Errorf("Expected 4 callbacks for service 'calc', got %d", len(svc.callbacks))
|
|
}
|
|
|
|
if len(svc.subscriptions) != 2 {
|
|
t.Errorf("Expected 2 subscriptions for service 'calc', got %d", len(svc.subscriptions))
|
|
}
|
|
}
|
|
|
|
// dummy codec used for testing RPC method execution
|
|
type ServerTestCodec struct {
|
|
counter int
|
|
input []byte
|
|
output string
|
|
closer chan interface{}
|
|
}
|
|
|
|
func (c *ServerTestCodec) ReadRequestHeaders() ([]rpcRequest, bool, RPCError) {
|
|
c.counter += 1
|
|
|
|
if c.counter == 1 {
|
|
var req JSONRequest
|
|
json.Unmarshal(c.input, &req)
|
|
return []rpcRequest{rpcRequest{id: *req.Id, isPubSub: false, service: "test", method: req.Method, params: req.Payload}}, false, nil
|
|
}
|
|
|
|
// requests are executes in parallel, wait a bit before returning an error so that the previous request has time to
|
|
// be executed
|
|
timer := time.NewTimer(time.Duration(2) * time.Second)
|
|
<-timer.C
|
|
|
|
return nil, false, &invalidRequestError{"connection closed"}
|
|
}
|
|
|
|
func (c *ServerTestCodec) ParseRequestArguments(argTypes []reflect.Type, payload interface{}) ([]reflect.Value, RPCError) {
|
|
|
|
args, _ := payload.(json.RawMessage)
|
|
|
|
argValues := make([]reflect.Value, len(argTypes))
|
|
params := make([]interface{}, len(argTypes))
|
|
|
|
n, err := countArguments(args)
|
|
if err != nil {
|
|
return nil, &invalidParamsError{err.Error()}
|
|
}
|
|
if n != len(argTypes) {
|
|
return nil, &invalidParamsError{fmt.Sprintf("insufficient params, want %d have %d", len(argTypes), n)}
|
|
|
|
}
|
|
|
|
for i, t := range argTypes {
|
|
if t.Kind() == reflect.Ptr {
|
|
// values must be pointers for the Unmarshal method, reflect.
|
|
// Dereference otherwise reflect.New would create **SomeType
|
|
argValues[i] = reflect.New(t.Elem())
|
|
params[i] = argValues[i].Interface()
|
|
|
|
// when not specified blockNumbers are by default latest (-1)
|
|
if blockNumber, ok := params[i].(*BlockNumber); ok {
|
|
*blockNumber = BlockNumber(-1)
|
|
}
|
|
} else {
|
|
argValues[i] = reflect.New(t)
|
|
params[i] = argValues[i].Interface()
|
|
|
|
// when not specified blockNumbers are by default latest (-1)
|
|
if blockNumber, ok := params[i].(*BlockNumber); ok {
|
|
*blockNumber = BlockNumber(-1)
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := json.Unmarshal(args, ¶ms); err != nil {
|
|
return nil, &invalidParamsError{err.Error()}
|
|
}
|
|
|
|
// Convert pointers back to values where necessary
|
|
for i, a := range argValues {
|
|
if a.Kind() != argTypes[i].Kind() {
|
|
argValues[i] = reflect.Indirect(argValues[i])
|
|
}
|
|
}
|
|
|
|
return argValues, nil
|
|
}
|
|
|
|
func (c *ServerTestCodec) CreateResponse(id int64, reply interface{}) interface{} {
|
|
return &JSONSuccessResponse{Version: jsonRPCVersion, Id: id, Result: reply}
|
|
}
|
|
|
|
func (c *ServerTestCodec) CreateErrorResponse(id *int64, err RPCError) interface{} {
|
|
return &JSONErrResponse{Version: jsonRPCVersion, Id: id, Error: JSONError{Code: err.Code(), Message: err.Error()}}
|
|
}
|
|
|
|
func (c *ServerTestCodec) CreateErrorResponseWithInfo(id *int64, err RPCError, info interface{}) interface{} {
|
|
return &JSONErrResponse{Version: jsonRPCVersion, Id: id,
|
|
Error: JSONError{Code: err.Code(), Message: err.Error(), Data: info}}
|
|
}
|
|
|
|
func (c *ServerTestCodec) CreateNotification(subid string, event interface{}) interface{} {
|
|
return &jsonNotification{Version: jsonRPCVersion, Method: notificationMethod,
|
|
Params: jsonSubscription{Subscription: subid, Result: event}}
|
|
}
|
|
|
|
func (c *ServerTestCodec) Write(msg interface{}) error {
|
|
if len(c.output) == 0 { // only capture first response
|
|
if o, err := json.Marshal(msg); err != nil {
|
|
return err
|
|
} else {
|
|
c.output = string(o)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (c *ServerTestCodec) Close() {
|
|
close(c.closer)
|
|
}
|
|
|
|
func (c *ServerTestCodec) Closed() <-chan interface{} {
|
|
return c.closer
|
|
}
|
|
|
|
func TestServerMethodExecution(t *testing.T) {
|
|
server := NewServer()
|
|
service := new(Service)
|
|
|
|
if err := server.RegisterName("test", service); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
|
|
id := int64(12345)
|
|
req := JSONRequest{
|
|
Method: "echo",
|
|
Version: "2.0",
|
|
Id: &id,
|
|
}
|
|
args := []interface{}{"string arg", 1122, &Args{"qwerty"}}
|
|
req.Payload, _ = json.Marshal(&args)
|
|
|
|
input, _ := json.Marshal(&req)
|
|
codec := &ServerTestCodec{input: input, closer: make(chan interface{})}
|
|
go server.ServeCodec(codec, OptionMethodInvocation)
|
|
|
|
<-codec.closer
|
|
|
|
expected := `{"jsonrpc":"2.0","id":12345,"result":{"String":"string arg","Int":1122,"Args":{"S":"qwerty"}}}`
|
|
|
|
if expected != codec.output {
|
|
t.Fatalf("expected %s, got %s\n", expected, codec.output)
|
|
}
|
|
}
|
|
|
|
func TestServerMethodWithCtx(t *testing.T) {
|
|
server := NewServer()
|
|
service := new(Service)
|
|
|
|
if err := server.RegisterName("test", service); err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
|
|
id := int64(12345)
|
|
req := JSONRequest{
|
|
Method: "echoWithCtx",
|
|
Version: "2.0",
|
|
Id: &id,
|
|
}
|
|
args := []interface{}{"string arg", 1122, &Args{"qwerty"}}
|
|
req.Payload, _ = json.Marshal(&args)
|
|
|
|
input, _ := json.Marshal(&req)
|
|
codec := &ServerTestCodec{input: input, closer: make(chan interface{})}
|
|
go server.ServeCodec(codec, OptionMethodInvocation)
|
|
|
|
<-codec.closer
|
|
|
|
expected := `{"jsonrpc":"2.0","id":12345,"result":{"String":"string arg","Int":1122,"Args":{"S":"qwerty"}}}`
|
|
|
|
if expected != codec.output {
|
|
t.Fatalf("expected %s, got %s\n", expected, codec.output)
|
|
}
|
|
}
|