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Merge pull request #16942 from karalabe/rpc-nil-reply

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rpc: support returning nil pointer big.Ints (null)
This commit is contained in:
Péter Szilágyi 2018-06-11 13:58:17 +03:00 committed by GitHub
commit 9f7592c802
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4 changed files with 7 additions and 31 deletions
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14
internal/ethapi/api.go
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@ -62,8 +62,9 @@ func NewPublicEthereumAPI(b Backend) *PublicEthereumAPI {
}
// GasPrice returns a suggestion for a gas price.
func (s *PublicEthereumAPI) GasPrice(ctx context.Context) (*big.Int, error) {
return s.b.SuggestPrice(ctx)
func (s *PublicEthereumAPI) GasPrice(ctx context.Context) (*hexutil.Big, error) {
price, err := s.b.SuggestPrice(ctx)
return (*hexutil.Big)(price), err
}
// ProtocolVersion returns the current Ethereum protocol version this node supports
@ -487,21 +488,20 @@ func NewPublicBlockChainAPI(b Backend) *PublicBlockChainAPI {
}
// BlockNumber returns the block number of the chain head.
func (s *PublicBlockChainAPI) BlockNumber() *big.Int {
func (s *PublicBlockChainAPI) BlockNumber() hexutil.Uint64 {
header, _ := s.b.HeaderByNumber(context.Background(), rpc.LatestBlockNumber) // latest header should always be available
return header.Number
return hexutil.Uint64(header.Number.Uint64())
}
// GetBalance returns the amount of wei for the given address in the state of the
// given block number. The rpc.LatestBlockNumber and rpc.PendingBlockNumber meta
// block numbers are also allowed.
func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*big.Int, error) {
func (s *PublicBlockChainAPI) GetBalance(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Big, error) {
state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
if state == nil || err != nil {
return nil, err
}
b := state.GetBalance(address)
return b, state.Error()
return (*hexutil.Big)(state.GetBalance(address)), state.Error()
}
// GetBlockByNumber returns the requested block. When blockNr is -1 the chain head is returned. When fullTx is true all

8
rpc/json.go
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@ -320,9 +320,6 @@ func parsePositionalArguments(rawArgs json.RawMessage, types []reflect.Type) ([]
// CreateResponse will create a JSON-RPC success response with the given id and reply as result.
func (c *jsonCodec) CreateResponse(id interface{}, reply interface{}) interface{} {
if isHexNum(reflect.TypeOf(reply)) {
return &jsonSuccessResponse{Version: jsonrpcVersion, Id: id, Result: fmt.Sprintf(`%#x`, reply)}
}
return &jsonSuccessResponse{Version: jsonrpcVersion, Id: id, Result: reply}
}
@ -340,11 +337,6 @@ func (c *jsonCodec) CreateErrorResponseWithInfo(id interface{}, err Error, info
// CreateNotification will create a JSON-RPC notification with the given subscription id and event as params.
func (c *jsonCodec) CreateNotification(subid, namespace string, event interface{}) interface{} {
if isHexNum(reflect.TypeOf(event)) {
return &jsonNotification{Version: jsonrpcVersion, Method: namespace + notificationMethodSuffix,
Params: jsonSubscription{Subscription: subid, Result: fmt.Sprintf(`%#x`, event)}}
}
return &jsonNotification{Version: jsonrpcVersion, Method: namespace + notificationMethodSuffix,
Params: jsonSubscription{Subscription: subid, Result: event}}
}

1
rpc/server.go
View File

@ -313,7 +313,6 @@ func (s *Server) handle(ctx context.Context, codec ServerCodec, req *serverReque
if len(reply) == 0 {
return codec.CreateResponse(req.id, nil), nil
}
if req.callb.errPos >= 0 { // test if method returned an error
if !reply[req.callb.errPos].IsNil() {
e := reply[req.callb.errPos].Interface().(error)

15
rpc/utils.go
View File

@ -22,7 +22,6 @@ import (
crand "crypto/rand"
"encoding/binary"
"encoding/hex"
"math/big"
"math/rand"
"reflect"
"strings"
@ -105,20 +104,6 @@ func formatName(name string) string {
return string(ret)
}
var bigIntType = reflect.TypeOf((*big.Int)(nil)).Elem()
// Indication if this type should be serialized in hex
func isHexNum(t reflect.Type) bool {
if t == nil {
return false
}
for t.Kind() == reflect.Ptr {
t = t.Elem()
}
return t == bigIntType
}
// suitableCallbacks iterates over the methods of the given type. It will determine if a method satisfies the criteria
// for a RPC callback or a subscription callback and adds it to the collection of callbacks or subscriptions. See server
// documentation for a summary of these criteria.