Add GetTx gRPC endpoint

CHANGELOG.md

@@ -50,6 +50,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
   * `Validator.ConsensusPubkey` type changed from `string` to `codectypes.Any`.
   * `MsgCreateValidator.Pubkey` type changed from `string` to `codectypes.Any`.
 * Deprecating and renaming `MakeEncodingConfig` to `MakeTestEncodingConfig` (both in `simapp` and `simapp/params` packages).
+* (tx) [\#7688](https://github.com/cosmos/cosmos-sdk/pull/7688) The gRPC simulate service method has been moved from `cosmos.base.v1beta1.simulate` to `cosmos.tx.v1beta1`, as a method in the Tx service.
 
 ### Features
 

baseapp/grpcrouter.go

@@ -9,10 +9,11 @@ import (
 	"google.golang.org/grpc/encoding"
 	"google.golang.org/grpc/encoding/proto"
 
+	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/grpc/reflection"
-	"github.com/cosmos/cosmos-sdk/client/grpc/simulate"
 	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/tx"
 )
 
 var protoCodec = encoding.GetCodec(proto.Name)
@@ -111,13 +112,14 @@ func (qrt *GRPCQueryRouter) SetInterfaceRegistry(interfaceRegistry codectypes.In
 	)
 }
 
-// RegisterSimulateService registers the simulate service on the gRPC router.
-func (qrt *GRPCQueryRouter) RegisterSimulateService(
-	simulateFn simulate.BaseAppSimulateFn,
+// RegisterTxService registers the tx service on the gRPC router.
+func (qrt *GRPCQueryRouter) RegisterTxService(
+	clientCtx client.Context,
+	simulateFn tx.BaseAppSimulateFn,
 	interfaceRegistry codectypes.InterfaceRegistry,
 ) {
-	simulate.RegisterSimulateServiceServer(
+	tx.RegisterServiceServer(
 		qrt,
-		simulate.NewSimulateServer(simulateFn, interfaceRegistry),
+		tx.NewTxServer(clientCtx, simulateFn, interfaceRegistry),
 	)
 }