Add GetTx gRPC endpoint

CHANGELOG.md

@@ -51,11 +51,13 @@ 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
 
 * (codec) [\#7519](https://github.com/cosmos/cosmos-sdk/pull/7519) `InterfaceRegistry` now inherits `jsonpb.AnyResolver`, and has a `RegisterCustomTypeURL` method to support ADR 031 packing of `Any`s. `AnyResolver` is now a required parameter to `RejectUnknownFields`.
 * (baseapp) [\#7519](https://github.com/cosmos/cosmos-sdk/pull/7519) Add `ServiceMsgRouter` to BaseApp to handle routing of protobuf service `Msg`s. The two new types defined in ADR 031, `sdk.ServiceMsg` and `sdk.MsgRequest` are introduced with this router.
+* (tx) [\#7688](https://github.com/cosmos/cosmos-sdk/pull/7688) Add a new Tx gRPC service with methods `Simulate` and `GetTx` (by hash).
 
 ### Bug Fixes
 

baseapp/grpcrouter.go

@@ -10,7 +10,6 @@ import (
 	"google.golang.org/grpc/encoding/proto"
 
 	"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"
 )
@@ -128,14 +127,3 @@ func (qrt *GRPCQueryRouter) SetInterfaceRegistry(interfaceRegistry codectypes.In
 		reflection.NewReflectionServiceServer(interfaceRegistry),
 	)
 }
-
-// RegisterSimulateService registers the simulate service on the gRPC router.
-func (qrt *GRPCQueryRouter) RegisterSimulateService(
-	simulateFn simulate.BaseAppSimulateFn,
-	interfaceRegistry codectypes.InterfaceRegistry,
-) {
-	simulate.RegisterSimulateServiceServer(
-		qrt,
-		simulate.NewSimulateServer(simulateFn, interfaceRegistry),
-	)
-}