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oracle: integrate module in core and RPC

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1. Initialization is performed via `Blockchain` methods.
2. Native Oracle contract updates list of oracle nodes
  and in-fly requests in `PostPersist`.
3. RPC uses Oracle module directly.
This commit is contained in:
Evgenii Stratonikov 2020-09-28 14:58:04 +03:00 • committed by Evgeniy Stratonikov
parent 7e16bea126
commit 43e4d3af88
31 changed files with 590 additions and 44 deletions
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45
pkg/rpc/server/server.go
View file

@ -2,6 +2,7 @@ package server
import (
"context"
"crypto/elliptic"
"encoding/binary"
"encoding/hex"
"encoding/json"
@ -23,10 +24,13 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/mpt"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/network"
"github.com/nspcc-dev/neo-go/pkg/services/oracle"
"github.com/nspcc-dev/neo-go/pkg/services/oracle/broadcaster"
"github.com/nspcc-dev/neo-go/pkg/rpc"
"github.com/nspcc-dev/neo-go/pkg/rpc/request"
"github.com/nspcc-dev/neo-go/pkg/rpc/response"
@ -47,6 +51,7 @@ type (
network netmode.Magic
stateRootEnabled bool
coreServer *network.Server
oracle *oracle.Oracle
log *zap.Logger
https *http.Server
shutdown chan struct{}
@ -116,6 +121,7 @@ var rpcHandlers = map[string]func(*Server, request.Params) (interface{}, *respon
"invokecontractverify": (*Server).invokeContractVerify,
"sendrawtransaction": (*Server).sendrawtransaction,
"submitblock": (*Server).submitBlock,
"submitoracleresponse": (*Server).submitOracleResponse,
"validateaddress": (*Server).validateAddress,
"verifyproof": (*Server).verifyProof,
}
@ -134,7 +140,8 @@ var invalidBlockHeightError = func(index int, height int) *response.Error {
var upgrader = websocket.Upgrader{}
// New creates a new Server struct.
func New(chain blockchainer.Blockchainer, conf rpc.Config, coreServer *network.Server, log *zap.Logger) Server {
func New(chain blockchainer.Blockchainer, conf rpc.Config, coreServer *network.Server,
orc *oracle.Oracle, log *zap.Logger) Server {
httpServer := &http.Server{
Addr: conf.Address + ":" + strconv.FormatUint(uint64(conf.Port), 10),
}
@ -146,6 +153,9 @@ func New(chain blockchainer.Blockchainer, conf rpc.Config, coreServer *network.S
}
}
if orc != nil {
orc.SetBroadcaster(broadcaster.New(orc.MainCfg, log))
}
return Server{
Server: httpServer,
chain: chain,
@ -154,6 +164,7 @@ func New(chain blockchainer.Blockchainer, conf rpc.Config, coreServer *network.S
stateRootEnabled: chain.GetConfig().StateRootInHeader,
coreServer: coreServer,
log: log,
oracle: orc,
https: tlsServer,
shutdown: make(chan struct{}),
@ -1223,6 +1234,38 @@ func (s *Server) submitBlock(reqParams request.Params) (interface{}, *response.E
}, nil
}
func (s *Server) submitOracleResponse(ps request.Params) (interface{}, *response.Error) {
if s.oracle == nil {
return nil, response.NewInternalServerError("oracle is not enabled", nil)
}
var pub *keys.PublicKey
pubBytes, err := ps.Value(0).GetBytesBase64()
if err == nil {
pub, err = keys.NewPublicKeyFromBytes(pubBytes, elliptic.P256())
}
if err != nil {
return nil, response.NewInvalidParamsError("public key is missing", err)
}
reqID, err := ps.Value(1).GetInt()
if err != nil {
return nil, response.NewInvalidParamsError("request ID is missing", err)
}
txSig, err := ps.Value(2).GetBytesBase64()
if err != nil {
return nil, response.NewInvalidParamsError("tx signature is missing", err)
}
msgSig, err := ps.Value(3).GetBytesBase64()
if err != nil {
return nil, response.NewInvalidParamsError("msg signature is missing", err)
}
data := broadcaster.GetMessage(pubBytes, uint64(reqID), txSig)
if !pub.Verify(msgSig, hash.Sha256(data).BytesBE()) {
return nil, response.NewRPCError("Invalid sign", "", nil)
}
s.oracle.AddResponse(pub, uint64(reqID), txSig)
return json.RawMessage([]byte("{}")), nil
}
func (s *Server) sendrawtransaction(reqParams request.Params) (interface{}, *response.Error) {
var resultsErr *response.Error
var results interface{}