Implement gRPC Simulate endpoint (cosmos#7035)

* Implement simulate endpoint

* Add GetProtoTx()

* Add signing in test

* Add txBuilderFromProto

* Remove stray println

* Update to master

* Merge master

* Fix tests

* Make tests pass

* Integrate in router

* Make proto-gen

* Fix lint

* Really fix lint

* Refactor to fix import cycles

* Rename builder -> wrapper

* Update proto/cosmos/base/reflection/v1beta1/reflection.proto

* Fix after merge

* t->w

Co-authored-by: Alexander Bezobchuk <[email protected]>

baseapp/grpcrouter.go

@@ -10,7 +10,9 @@ import (
 	"google.golang.org/grpc/encoding/proto"
 
 	"github.com/cosmos/cosmos-sdk/client/grpc/reflection"
-	"github.com/cosmos/cosmos-sdk/codec/types"
+	"github.com/cosmos/cosmos-sdk/client/grpc/simulate"
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 )
 
@@ -19,7 +21,7 @@ var protoCodec = encoding.GetCodec(proto.Name)
 // GRPCQueryRouter routes ABCI Query requests to GRPC handlers
 type GRPCQueryRouter struct {
 	routes            map[string]GRPCQueryHandler
-	interfaceRegistry types.InterfaceRegistry
+	interfaceRegistry codectypes.InterfaceRegistry
 	serviceData       []serviceData
 }
 
@@ -69,7 +71,7 @@ func (qrt *GRPCQueryRouter) RegisterService(sd *grpc.ServiceDesc, handler interf
 					return err
 				}
 				if qrt.interfaceRegistry != nil {
-					return types.UnpackInterfaces(i, qrt.interfaceRegistry)
+					return codectypes.UnpackInterfaces(i, qrt.interfaceRegistry)
 				}
 				return nil
 			}, nil)
@@ -97,14 +99,27 @@ func (qrt *GRPCQueryRouter) RegisterService(sd *grpc.ServiceDesc, handler interf
 	})
 }
 
-// SetInterfaceRegistry sets the interface registry for the router.
-func (qrt *GRPCQueryRouter) SetInterfaceRegistry(interfaceRegistry types.InterfaceRegistry) {
+// SetInterfaceRegistry sets the interface registry for the router. This will
+// also register the interface reflection gRPC service.
+func (qrt *GRPCQueryRouter) SetInterfaceRegistry(interfaceRegistry codectypes.InterfaceRegistry) {
 	qrt.interfaceRegistry = interfaceRegistry
 
 	// Once we have an interface registry, we can register the interface
 	// registry reflection gRPC service.
 	reflection.RegisterReflectionServiceServer(
 		qrt,
-		reflection.NewReflectionServiceServer(qrt.interfaceRegistry),
+		reflection.NewReflectionServiceServer(interfaceRegistry),
+	)
+}
+
+// RegisterSimulateService registers the simulate service on the gRPC router.
+func (qrt *GRPCQueryRouter) RegisterSimulateService(
+	simulateFn simulate.BaseAppSimulateFn,
+	interfaceRegistry codectypes.InterfaceRegistry,
+	pubkeyCodec cryptotypes.PublicKeyCodec,
+) {
+	simulate.RegisterSimulateServiceServer(
+		qrt,
+		simulate.NewSimulateServer(simulateFn, qrt.interfaceRegistry, pubkeyCodec),
 	)
 }