Implemented RPC framework

2014-05-02 13:35:25 +02:00
parent d2ab322267
commit ebdf339a61
3 changed files with 257 additions and 0 deletions
--- a/etherpc/packages.go
+++ b/etherpc/packages.go
@@ -0,0 +1,194 @@
+package etherpc
+
+import (
+	"encoding/json"
+	"errors"
+	"math/big"
+)
+
+type MainPackage struct{}
+
+type JsonArgs interface {
+	requirements() error
+}
+
+type BlockResponse struct {
+	Name string
+	Id   int
+}
+type GetBlockArgs struct {
+	BlockNumber int
+	Hash        string
+}
+
+type ErrorResponse struct {
+	Error     bool   `json:"error"`
+	ErrorText string `json:"errorText"`
+}
+
+type JsonResponse interface {
+}
+
+type SuccessRes struct {
+	Error  bool         `json:"error"`
+	Result JsonResponse `json:"result"`
+}
+
+func NewSuccessRes(object JsonResponse) string {
+	e := SuccessRes{Error: false, Result: object}
+	res, err := json.Marshal(e)
+	if err != nil {
+		// This should never happen
+		panic("Creating json error response failed, help")
+	}
+	success := string(res)
+	return success
+}
+
+func NewErrorResponse(msg string) error {
+	e := ErrorResponse{Error: true, ErrorText: msg}
+	res, err := json.Marshal(e)
+	if err != nil {
+		// This should never happen
+		panic("Creating json error response failed, help")
+	}
+	newErr := errors.New(string(res))
+	return newErr
+}
+
+func (b *GetBlockArgs) requirements() error {
+	if b.BlockNumber == 0 && b.Hash == "" {
+		return NewErrorResponse("GetBlock requires either a block 'number' or a block 'hash' as argument")
+	}
+	return nil
+}
+
+func (p *MainPackage) GetBlock(args *GetBlockArgs, reply *BlockResponse) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	// Do something
+
+	return nil
+}
+
+type NewTxArgs struct {
+	Sec       string
+	Recipient string
+	Value     *big.Int
+	Gas       *big.Int
+	GasPrice  *big.Int
+	Init      string
+	Body      string
+}
+type TxResponse struct {
+	Hash string
+}
+
+func (a *NewTxArgs) requirements() error {
+	if a.Recipient == "" {
+		return NewErrorResponse("Transact requires a 'recipient' address as argument")
+	}
+	if a.Value == nil {
+		return NewErrorResponse("Transact requires a 'value' as argument")
+	}
+	if a.Gas == nil {
+		return NewErrorResponse("Transact requires a 'gas' value as argument")
+	}
+	if a.GasPrice == nil {
+		return NewErrorResponse("Transact requires a 'gasprice' value as argument")
+	}
+	return nil
+}
+
+func (a *NewTxArgs) requirementsContract() error {
+	if a.Value == nil {
+		return NewErrorResponse("Create requires a 'value' as argument")
+	}
+	if a.Gas == nil {
+		return NewErrorResponse("Create requires a 'gas' value as argument")
+	}
+	if a.GasPrice == nil {
+		return NewErrorResponse("Create requires a 'gasprice' value as argument")
+	}
+	if a.Init == "" {
+		return NewErrorResponse("Create requires a 'init' value as argument")
+	}
+	if a.Body == "" {
+		return NewErrorResponse("Create requires a 'body' value as argument")
+	}
+	return nil
+}
+
+func (p *MainPackage) Transact(args *NewTxArgs, reply *TxResponse) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (p *MainPackage) Create(args *NewTxArgs, reply *string) error {
+	err := args.requirementsContract()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (p *MainPackage) getKey(args interface{}, reply *string) error {
+	return nil
+}
+
+type GetStorageArgs struct {
+	Address string
+	Key     string
+}
+
+func (a *GetStorageArgs) requirements() error {
+	if a.Address == "" {
+		return NewErrorResponse("GetStorageAt requires an 'address' value as argument")
+	}
+	if a.Key == "" {
+		return NewErrorResponse("GetStorageAt requires an 'key' value as argument")
+	}
+	return nil
+}
+
+func (p *MainPackage) getStorageAt(args *GetStorageArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+type GetBalanceArgs struct {
+	Address string
+}
+
+func (a *GetBalanceArgs) requirements() error {
+	if a.Address == "" {
+		return NewErrorResponse("GetBalanceAt requires an 'address' value as argument")
+	}
+	return nil
+}
+
+func (p *MainPackage) GetBalanceAt(args *GetBalanceArgs, reply *string) error {
+	err := args.requirements()
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+type TestRes struct {
+	JsonResponse `json:"-"`
+	Answer       int `json:"answer"`
+}
+
+func (p *MainPackage) Test(args *GetBlockArgs, reply *string) error {
+	*reply = NewSuccessRes(TestRes{Answer: 15})
+	return nil
+}