multi: separate Querier from BaseDB interfaces

A Querier holds the methods of sqlc.Querier interface relevant for a package.
BaseDB has Querier + ExecTx method.

This change is needed to simplify further rework of ExecTx.

instantout/reservation/store.go

@@ -16,9 +16,9 @@ import (
 	"github.com/lightningnetwork/lnd/keychain"
 )
 
-// BaseDB is the interface that contains all the queries generated
+// Querier is the interface that contains all the queries generated
 // by sqlc for the reservation table.
-type BaseDB interface {
+type Querier interface {
 	// CreateReservation stores the reservation in the database.
 	CreateReservation(ctx context.Context,
 		arg sqlc.CreateReservationParams) error
@@ -42,6 +42,12 @@ type BaseDB interface {
 	// UpdateReservation updates a reservation.
 	UpdateReservation(ctx context.Context,
 		arg sqlc.UpdateReservationParams) error
+}
+
+// BaseDB is the interface that contains all the queries generated
+// by sqlc for the reservation table and transaction functionality.
+type BaseDB interface {
+	Querier
 
 	// ExecTx allows for executing a function in the context of a database
 	// transaction.

instantout/store.go

@@ -21,9 +21,9 @@ import (
 	"github.com/lightningnetwork/lnd/lnwallet/chainfee"
 )
 
-// InstantOutBaseDB is the interface that contains all the queries generated
+// Querier is the interface that contains all the queries generated
 // by sqlc for the instantout table.
-type InstantOutBaseDB interface {
+type Querier interface {
 	// InsertSwap inserts a new base swap.
 	InsertSwap(ctx context.Context, arg sqlc.InsertSwapParams) error
 
@@ -53,6 +53,12 @@ type InstantOutBaseDB interface {
 	// GetInstantOutSwaps retrieves all instant out swaps.
 	GetInstantOutSwaps(ctx context.Context) ([]sqlc.GetInstantOutSwapsRow,
 		error)
+}
+
+// InstantOutBaseDB is the interface that contains all the queries generated
+// by sqlc for the instantout table and transaction functionality.
+type InstantOutBaseDB interface {
+	Querier
 
 	// ExecTx allows for executing a function in the context of a database
 	// transaction.

sweepbatcher/store.go

@@ -15,7 +15,9 @@ import (
 	"github.com/lightningnetwork/lnd/lntypes"
 )
 
-type BaseDB interface {
+// Querier is the interface that contains all the queries generated
+// by sqlc for sweep batcher.
+type Querier interface {
 	// ConfirmBatch confirms a batch by setting the state to confirmed.
 	ConfirmBatch(ctx context.Context, id int32) error
 
@@ -52,6 +54,12 @@ type BaseDB interface {
 	// UpsertSweep inserts a sweep into the database, or updates an existing
 	// sweep if it already exists.
 	UpsertSweep(ctx context.Context, arg sqlc.UpsertSweepParams) error
+}
+
+// BaseDB is the interface that contains all the queries generated
+// by sqlc for sweep batcher and transaction functionality.
+type BaseDB interface {
+	Querier
 
 	// ExecTx allows for executing a function in the context of a database
 	// transaction.