Add tx broadcast gRPC endpoint (#7852)

* WIP tx/broadcast grpc endpoint

* fix lint

* fix proto lint

* Update service.proto

* resolve conflicts

* update service.proto

* Update service.proto

* review changes

* proto lint

* Switch to txraw

* Add check breaking at the end

* Fix broadcast

* Send Msg on SetupSuite

* Remove proto-check-breaking

* 1 validator in test

* Add grpc server tests for broadcast

* Fix grpc server tests

* Add some changes

* Add ress comments

* Add table tests for tx service

* Add test for mode

* Add simulate tests

* Add build flag back

* Revert custom stringer for enum

* Remove stray logs

* Use /txs/{hash}

Co-authored-by: Amaury Martiny <amaury.martiny@protonmail.com>
Co-authored-by: Aleksandr Bezobchuk <alexanderbez@users.noreply.github.com>

Makefile

@@ -357,7 +357,7 @@ devdoc-update:
 ###                                Protobuf                                 ###
 ###############################################################################
 
-proto-all: proto-format proto-lint proto-check-breaking proto-gen
+proto-all: proto-format proto-lint proto-gen
 
 proto-gen:
 	@echo "Generating Protobuf files"

client/broadcast.go

@@ -7,10 +7,13 @@ import (
 
 	"github.com/tendermint/tendermint/crypto/tmhash"
 	"github.com/tendermint/tendermint/mempool"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	"github.com/cosmos/cosmos-sdk/types/tx"
 )
 
 // BroadcastTx broadcasts a transactions either synchronously or asynchronously
@@ -142,3 +145,36 @@ func (ctx Context) BroadcastTxAsync(txBytes []byte) (*sdk.TxResponse, error) {
 
 	return sdk.NewResponseFormatBroadcastTx(res), err
 }
+
+// TxServiceBroadcast is a helper function to broadcast a Tx with the correct gRPC types
+// from the tx service. Calls `clientCtx.BroadcastTx` under the hood.
+func TxServiceBroadcast(grpcCtx context.Context, clientCtx Context, req *tx.BroadcastTxRequest) (*tx.BroadcastTxResponse, error) {
+	if req == nil || req.TxBytes == nil {
+		return nil, status.Error(codes.InvalidArgument, "invalid empty tx")
+	}
+
+	clientCtx = clientCtx.WithBroadcastMode(normalizeBroadcastMode(req.Mode))
+	resp, err := clientCtx.BroadcastTx(req.TxBytes)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tx.BroadcastTxResponse{
+		TxResponse: resp,
+	}, nil
+}
+
+// normalizeBroadcastMode converts a broadcast mode into a normalized string
+// to be passed into the clientCtx.
+func normalizeBroadcastMode(mode tx.BroadcastMode) string {
+	switch mode {
+	case tx.BroadcastMode_BROADCAST_MODE_ASYNC:
+		return "async"
+	case tx.BroadcastMode_BROADCAST_MODE_BLOCK:
+		return "block"
+	case tx.BroadcastMode_BROADCAST_MODE_SYNC:
+		return "sync"
+	default:
+		return "unspecified"
+	}
+}

client/grpc_query.go

@@ -3,6 +3,7 @@ package client
 import (
 	gocontext "context"
 	"fmt"
+	"reflect"
 	"strconv"
 
 	gogogrpc "github.com/gogo/protobuf/grpc"
@@ -12,18 +13,48 @@ import (
 	"google.golang.org/grpc/encoding/proto"
 	"google.golang.org/grpc/metadata"
 
-	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
-
 	"github.com/cosmos/cosmos-sdk/codec/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
+	"github.com/cosmos/cosmos-sdk/types/tx"
 )
 
 var _ gogogrpc.ClientConn = Context{}
 
 var protoCodec = encoding.GetCodec(proto.Name)
 
 // Invoke implements the grpc ClientConn.Invoke method
-func (ctx Context) Invoke(grpcCtx gocontext.Context, method string, args, reply interface{}, opts ...grpc.CallOption) error {
+func (ctx Context) Invoke(grpcCtx gocontext.Context, method string, args, reply interface{}, opts ...grpc.CallOption) (err error) {
+	// Two things can happen here:
+	// 1. either we're broadcasting a Tx, in which call we call Tendermint's broadcast endpoint directly,
+	// 2. or we are querying for state, in which case we call ABCI's Query.
+
+	// In both cases, we don't allow empty request args (it will panic unexpectedly).
+	if reflect.ValueOf(args).IsNil() {
+		return sdkerrors.Wrap(sdkerrors.ErrInvalidRequest, "request cannot be nil")
+	}
+
+	// Case 1. Broadcasting a Tx.
+	if isBroadcast(method) {
+		req, ok := args.(*tx.BroadcastTxRequest)
+		if !ok {
+			return sdkerrors.Wrapf(sdkerrors.ErrInvalidRequest, "expected %T, got %T", (*tx.BroadcastTxRequest)(nil), args)
+		}
+		res, ok := reply.(*tx.BroadcastTxResponse)
+		if !ok {
+			return sdkerrors.Wrapf(sdkerrors.ErrInvalidRequest, "expected %T, got %T", (*tx.BroadcastTxResponse)(nil), args)
+		}
+
+		broadcastRes, err := TxServiceBroadcast(grpcCtx, ctx, req)
+		if err != nil {
+			return err
+		}
+		*res = *broadcastRes
+
+		return err
+	}
+
+	// Case 2. Querying state.
 	reqBz, err := protoCodec.Marshal(args)
 	if err != nil {
 		return err
@@ -86,3 +117,7 @@ func (ctx Context) Invoke(grpcCtx gocontext.Context, method string, args, reply
 func (Context) NewStream(gocontext.Context, *grpc.StreamDesc, string, ...grpc.CallOption) (grpc.ClientStream, error) {
 	return nil, fmt.Errorf("streaming rpc not supported")
 }
+
+func isBroadcast(method string) bool {
+	return method == "/cosmos.tx.v1beta1.Service/BroadcastTx"
+}

docs/migrations/rest.md

@@ -31,7 +31,7 @@ Some modules expose legacy `POST` endpoints to generate unsigned transactions fo
 
 | Legacy REST Endpoint                                                            | Description                                                         | New gGPC-gateway REST Endpoint                                                                        |
 | ------------------------------------------------------------------------------- | ------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- |
-| `GET /txs/{hash}`                                                               | Query tx by hash                                                    | `GET /cosmos/tx/v1beta1/tx/{hash}`                                                                    |
+| `GET /txs/{hash}`                                                               | Query tx by hash                                                    | `GET /cosmos/tx/v1beta1/txs/{hash}`                                                                   |
 | `GET /txs`                                                                      | Query tx by events                                                  | `GET /cosmos/tx/v1beta1/txs`                                                                          |
 | `POST /txs`                                                                     | Broadcast tx                                                        | `POST /cosmos/tx/v1beta1/txs`                                                                         |
 | `POST /txs/encode`                                                              | Encodes an Amino JSON tx to an Amino binary tx                      | N/A, use Protobuf directly                                                                            |

proto/cosmos/tx/v1beta1/service.proto

@@ -4,6 +4,7 @@ package cosmos.tx.v1beta1;
 import "google/api/annotations.proto";
 import "cosmos/base/abci/v1beta1/abci.proto";
 import "cosmos/tx/v1beta1/tx.proto";
+import "gogoproto/gogo.proto";
 import "cosmos/base/query/v1beta1/pagination.proto";
 
 option go_package = "github.com/cosmos/cosmos-sdk/types/tx";
@@ -12,13 +13,22 @@ option go_package = "github.com/cosmos/cosmos-sdk/types/tx";
 service Service {
   // Simulate simulates executing a transaction for estimating gas usage.
   rpc Simulate(SimulateRequest) returns (SimulateResponse) {
-    option (google.api.http).post = "/cosmos/tx/v1beta1/simulate";
+    option (google.api.http) = {
+      post: "/cosmos/tx/v1beta1/simulate"
+      body: "*"
+    };
   }
   // GetTx fetches a tx by hash.
   rpc GetTx(GetTxRequest) returns (GetTxResponse) {
-    option (google.api.http).get = "/cosmos/tx/v1beta1/tx/{hash}";
+    option (google.api.http).get = "/cosmos/tx/v1beta1/txs/{hash}";
+  }
+  // BroadcastTx broadcast transaction.
+  rpc BroadcastTx(BroadcastTxRequest) returns (BroadcastTxResponse) {
+    option (google.api.http) = {
+      post: "/cosmos/tx/v1beta1/txs"
+      body: "*"
+    };
   }
-
   // GetTxsEvent fetches txs by event.
   rpc GetTxsEvent(GetTxsEventRequest) returns (GetTxsEventResponse) {
     option (google.api.http).get = "/cosmos/tx/v1beta1/txs";
@@ -45,6 +55,36 @@ message GetTxsEventResponse {
   cosmos.base.query.v1beta1.PageResponse pagination = 3;
 }
 
+// BroadcastTxRequest is the request type for the Service.BroadcastTxRequest
+// RPC method.
+message BroadcastTxRequest {
+  // tx_bytes is the raw transaction.
+  bytes         tx_bytes = 1;
+  BroadcastMode mode     = 2;
+}
+
+// BroadcastMode specifies the broadcast mode for the TxService.Broadcast RPC method.
+enum BroadcastMode {
+  // zero-value for mode ordering
+  BROADCAST_MODE_UNSPECIFIED = 0;
+  // BROADCAST_MODE_BLOCK defines a tx broadcasting mode where the client waits for
+  // the tx to be committed in a block.
+  BROADCAST_MODE_BLOCK = 1;
+  // BROADCAST_MODE_SYNC defines a tx broadcasting mode where the client waits for
+  // a CheckTx execution response only.
+  BROADCAST_MODE_SYNC = 2;
+  // BROADCAST_MODE_ASYNC defines a tx broadcasting mode where the client returns
+  // immediately.
+  BROADCAST_MODE_ASYNC = 3;
+}
+
+// BroadcastTxResponse is the response type for the
+// Service.BroadcastTx method.
+message BroadcastTxResponse {
+  // tx_response is the queried TxResponses.
+  cosmos.base.abci.v1beta1.TxResponse tx_response = 1;
+}
+
 // SimulateRequest is the request type for the Service.Simulate
 // RPC method.
 message SimulateRequest {

server/grpc/server_test.go

@@ -13,54 +13,64 @@ import (
 	"google.golang.org/grpc/metadata"
 	rpb "google.golang.org/grpc/reflection/grpc_reflection_v1alpha"
 
+	clienttx "github.com/cosmos/cosmos-sdk/client/tx"
 	"github.com/cosmos/cosmos-sdk/testutil/network"
 	"github.com/cosmos/cosmos-sdk/testutil/testdata"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	grpctypes "github.com/cosmos/cosmos-sdk/types/grpc"
 	"github.com/cosmos/cosmos-sdk/types/tx"
 	txtypes "github.com/cosmos/cosmos-sdk/types/tx"
+	"github.com/cosmos/cosmos-sdk/types/tx/signing"
+	authclient "github.com/cosmos/cosmos-sdk/x/auth/client"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 )
 
 type IntegrationTestSuite struct {
 	suite.Suite
 
+	cfg     network.Config
 	network *network.Network
+	conn    *grpc.ClientConn
 }
 
 func (s *IntegrationTestSuite) SetupSuite() {
 	s.T().Log("setting up integration test suite")
 
-	s.network = network.New(s.T(), network.DefaultConfig())
+	s.cfg = network.DefaultConfig()
+	s.network = network.New(s.T(), s.cfg)
 	s.Require().NotNil(s.network)
 
 	_, err := s.network.WaitForHeight(2)
 	s.Require().NoError(err)
-}
-
-func (s *IntegrationTestSuite) TearDownSuite() {
-	s.T().Log("tearing down integration test suite")
-	s.network.Cleanup()
-}
 
-func (s *IntegrationTestSuite) TestGRPCServer() {
 	val0 := s.network.Validators[0]
-	conn, err := grpc.Dial(
+	s.conn, err = grpc.Dial(
 		val0.AppConfig.GRPC.Address,
 		grpc.WithInsecure(), // Or else we get "no transport security set"
 	)
 	s.Require().NoError(err)
-	defer conn.Close()
+}
 
+func (s *IntegrationTestSuite) TearDownSuite() {
+	s.T().Log("tearing down integration test suite")
+	s.conn.Close()
+	s.network.Cleanup()
+}
+
+func (s *IntegrationTestSuite) TestGRPCServer_TestService() {
 	// gRPC query to test service should work
-	testClient := testdata.NewQueryClient(conn)
+	testClient := testdata.NewQueryClient(s.conn)
 	testRes, err := testClient.Echo(context.Background(), &testdata.EchoRequest{Message: "hello"})
 	s.Require().NoError(err)
 	s.Require().Equal("hello", testRes.Message)
+}
+
+func (s *IntegrationTestSuite) TestGRPCServer_BankBalance() {
+	val0 := s.network.Validators[0]
 
 	// gRPC query to bank service should work
 	denom := fmt.Sprintf("%stoken", val0.Moniker)
-	bankClient := banktypes.NewQueryClient(conn)
+	bankClient := banktypes.NewQueryClient(s.conn)
 	var header metadata.MD
 	bankRes, err := bankClient.Balance(
 		context.Background(),
@@ -83,9 +93,11 @@ func (s *IntegrationTestSuite) TestGRPCServer() {
 	)
 	blockHeight = header.Get(grpctypes.GRPCBlockHeightHeader)
 	s.Require().Equal([]string{"1"}, blockHeight)
+}
 
+func (s *IntegrationTestSuite) TestGRPCServer_Reflection() {
 	// Test server reflection
-	reflectClient := rpb.NewServerReflectionClient(conn)
+	reflectClient := rpb.NewServerReflectionClient(s.conn)
 	stream, err := reflectClient.ServerReflectionInfo(context.Background(), grpc.WaitForReady(true))
 	s.Require().NoError(err)
 	s.Require().NoError(stream.Send(&rpb.ServerReflectionRequest{
@@ -100,11 +112,13 @@ func (s *IntegrationTestSuite) TestGRPCServer() {
 	}
 	// Make sure the following services are present
 	s.Require().True(servicesMap["cosmos.bank.v1beta1.Query"])
+}
 
+func (s *IntegrationTestSuite) TestGRPCServer_GetTxsEvent() {
 	// Query the tx via gRPC without pagination. This used to panic, see
 	// https://github.com/cosmos/cosmos-sdk/issues/8038.
-	txServiceClient := txtypes.NewServiceClient(conn)
-	_, err = txServiceClient.GetTxsEvent(
+	txServiceClient := txtypes.NewServiceClient(s.conn)
+	_, err := txServiceClient.GetTxsEvent(
 		context.Background(),
 		&tx.GetTxsEventRequest{
 			Events: []string{"message.action=send"},
@@ -115,6 +129,50 @@ func (s *IntegrationTestSuite) TestGRPCServer() {
 	s.Require().NoError(err)
 }
 
+func (s *IntegrationTestSuite) TestGRPCServer_BroadcastTx() {
+	val0 := s.network.Validators[0]
+
+	// prepare txBuilder with msg
+	txBuilder := val0.ClientCtx.TxConfig.NewTxBuilder()
+	feeAmount := sdk.Coins{sdk.NewInt64Coin(s.cfg.BondDenom, 10)}
+	gasLimit := testdata.NewTestGasLimit()
+	s.Require().NoError(
+		txBuilder.SetMsgs(&banktypes.MsgSend{
+			FromAddress: val0.Address.String(),
+			ToAddress:   val0.Address.String(),
+			Amount:      sdk.Coins{sdk.NewInt64Coin(s.cfg.BondDenom, 10)},
+		}),
+	)
+	txBuilder.SetFeeAmount(feeAmount)
+	txBuilder.SetGasLimit(gasLimit)
+
+	// setup txFactory
+	txFactory := clienttx.Factory{}.
+		WithChainID(val0.ClientCtx.ChainID).
+		WithKeybase(val0.ClientCtx.Keyring).
+		WithTxConfig(val0.ClientCtx.TxConfig).
+		WithSignMode(signing.SignMode_SIGN_MODE_DIRECT)
+
+	// Sign Tx.
+	err := authclient.SignTx(txFactory, val0.ClientCtx, val0.Moniker, txBuilder, false)
+	s.Require().NoError(err)
+
+	txBytes, err := val0.ClientCtx.TxConfig.TxEncoder()(txBuilder.GetTx())
+	s.Require().NoError(err)
+
+	// Broadcast the tx via gRPC.
+	queryClient := tx.NewServiceClient(s.conn)
+	grpcRes, err := queryClient.BroadcastTx(
+		context.Background(),
+		&tx.BroadcastTxRequest{
+			Mode:    tx.BroadcastMode_BROADCAST_MODE_SYNC,
+			TxBytes: txBytes,
+		},
+	)
+	s.Require().NoError(err)
+	s.Require().Equal(uint32(0), grpcRes.TxResponse.Code)
+}
+
 // Test and enforce that we upfront reject any connections to baseapp containing
 // invalid initial x-cosmos-block-height that aren't positive  and in the range [0, max(int64)]
 // See issue https://github.com/cosmos/cosmos-sdk/issues/7662.