[Clients] embed ParamsQuerier into ApplicationQueryClient

pkg/client/interface.go

@@ -268,6 +268,8 @@ type AccountQueryClient interface {
 // ApplicationQueryClient defines an interface that enables the querying of the
 // on-chain application information
 type ApplicationQueryClient interface {
+	ParamsQuerier[*apptypes.Params]
+
 	// GetApplication queries the chain for the details of the application provided
 	GetApplication(ctx context.Context, appAddress string) (apptypes.Application, error)
 

pkg/client/query/appquerier.go

@@ -4,10 +4,11 @@ import (
 	"context"
 
 	"cosmossdk.io/depinject"
-	grpc "github.com/cosmos/gogoproto/grpc"
+	gogogrpc "github.com/cosmos/gogoproto/grpc"
 
 	"github.com/pokt-network/poktroll/pkg/client"
 	apptypes "github.com/pokt-network/poktroll/x/application/types"
+	sharedtypes "github.com/pokt-network/poktroll/x/shared/types"
 )
 
 var _ client.ApplicationQueryClient = (*appQuerier)(nil)
@@ -16,19 +17,40 @@ var _ client.ApplicationQueryClient = (*appQuerier)(nil)
 // querying of on-chain application information through a single exposed method
 // which returns an apptypes.Application interface
 type appQuerier struct {
-	clientConn         grpc.ClientConn
+	client.ParamsQuerier[*apptypes.Params]
+
+	clientConn         gogogrpc.ClientConn
 	applicationQuerier apptypes.QueryClient
 }
 
 // NewApplicationQuerier returns a new instance of a client.ApplicationQueryClient
 // by injecting the dependecies provided by the depinject.Config
 //
 // Required dependencies:
-// - clientCtx
-func NewApplicationQuerier(deps depinject.Config) (client.ApplicationQueryClient, error) {
-	aq := &appQuerier{}
+// - clientCtx (gogogrpc.ClientConn)
+func NewApplicationQuerier(
+	deps depinject.Config,
+	opts ...ParamsQuerierOptionFn,
+) (client.ApplicationQueryClient, error) {
+	cfg := DefaultParamsQuerierConfig()
+	for _, opt := range opts {
+		opt(cfg)
+	}
+
+	paramsQuerier, err := NewCachedParamsQuerier[*apptypes.Params, apptypes.ApplicationQueryClient](
+		deps, apptypes.NewAppQueryClient,
+		WithModuleInfo(sharedtypes.ModuleName, sharedtypes.ErrSharedParamInvalid),
+		WithQueryCacheOptions(cfg.CacheOpts...),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	aq := &appQuerier{
+		ParamsQuerier: paramsQuerier,
+	}
 
-	if err := depinject.Inject(
+	if err = depinject.Inject(
 		deps,
 		&aq.clientConn,
 	); err != nil {

x/application/types/expected_keepers.go

@@ -37,3 +37,7 @@ type SharedKeeper interface {
 	GetParams(ctx context.Context) sharedtypes.Params
 	GetSessionEndHeight(ctx context.Context, queryHeight int64) int64
 }
+
+type ApplicationKeeper interface {
+	GetParams(ctx context.Context) Params
+}

x/application/types/query_client.go

@@ -0,0 +1,31 @@
+package types
+
+import (
+	"context"
+
+	gogogrpc "github.com/cosmos/gogoproto/grpc"
+)
+
+// TODO_IN_THIS_COMMIT: godoc...
+type ApplicationQueryClient interface {
+	QueryClient
+
+	GetParams(context.Context) (*Params, error)
+}
+
+// TODO_IN_THIS_COMMIT: godoc...
+func NewAppQueryClient(conn gogogrpc.ClientConn) ApplicationQueryClient {
+	return NewQueryClient(conn).(ApplicationQueryClient)
+}
+
+// TODO_IN_THIS_COMMIT: investigate generalization...
+// TODO_IN_THIS_COMMIT: godoc...
+func (c *queryClient) GetParams(ctx context.Context) (*Params, error) {
+	res, err := c.Params(ctx, &QueryParamsRequest{})
+	if err != nil {
+		return nil, err
+	}
+
+	params := res.GetParams()
+	return &params, nil
+}

x/proof/types/application_query_client.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/pokt-network/poktroll/pkg/client"
 	apptypes "github.com/pokt-network/poktroll/x/application/types"
+	sharedkeeper "github.com/pokt-network/poktroll/x/shared/keeper"
 )
 
 var _ client.ApplicationQueryClient = (*AppKeeperQueryClient)(nil)
@@ -13,6 +14,8 @@ var _ client.ApplicationQueryClient = (*AppKeeperQueryClient)(nil)
 // It does not rely on the QueryClient, and therefore does not make any
 // network requests as in the off-chain implementation.
 type AppKeeperQueryClient struct {
+	client.ParamsQuerier[*apptypes.Params]
+
 	keeper ApplicationKeeper
 }
 
@@ -22,7 +25,12 @@ type AppKeeperQueryClient struct {
 // has delegated its signing power to.
 // It should be injected into the RingClient when initialized from within the a keeper.
 func NewAppKeeperQueryClient(appKeeper ApplicationKeeper) client.ApplicationQueryClient {
-	return &AppKeeperQueryClient{keeper: appKeeper}
+	keeperParamsQuerier := sharedkeeper.NewKeeperParamsQuerier[apptypes.Params](appKeeper)
+
+	return &AppKeeperQueryClient{
+		keeper:        appKeeper,
+		ParamsQuerier: keeperParamsQuerier,
+	}
 }
 
 // GetApplication returns the application corresponding to the given address.

x/proof/types/expected_keepers.go

@@ -49,6 +49,7 @@ type ApplicationKeeper interface {
 	GetApplication(ctx context.Context, address string) (app apptypes.Application, found bool)
 	GetAllApplications(ctx context.Context) []apptypes.Application
 	SetApplication(context.Context, apptypes.Application)
+	GetParams(context.Context) apptypes.Params
 }
 
 // SharedKeeper defines the expected interface needed to retrieve shared information.

x/tokenomics/types/expected_keepers.go

@@ -46,6 +46,7 @@ type ApplicationKeeper interface {
 	GetAllApplications(ctx context.Context) []apptypes.Application
 	UnbondApplication(ctx context.Context, app *apptypes.Application) error
 	EndBlockerUnbondApplications(ctx context.Context) error
+	GetParams(ctx context.Context) apptypes.Params
 }
 
 type ProofKeeper interface {