Setup hooks wiring between auction and registry modules with depinject

app/app.go

@@ -76,7 +76,7 @@ type LaconicApp struct {
 	ConsensusParamsKeeper consensuskeeper.Keeper
 
 	// laconic keepers
-	AuctionKeeper  auctionkeeper.Keeper
+	AuctionKeeper  *auctionkeeper.Keeper // (Use * as per ProvideModule implementation)
 	BondKeeper     bondkeeper.Keeper
 	RegistryKeeper registrykeeper.Keeper
 	// RegistryRecordKeeper registrykeeper.RecordKeeper

x/auction/expected_keepers.go

@@ -0,0 +1,23 @@
+package auction
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// AuctionUsageKeeper keep track of auction usage in other modules.
+// Used to, for example, prevent deletion of a auction that's in use.
+type AuctionUsageKeeper interface {
+	ModuleName() string
+	UsesAuction(ctx sdk.Context, auctionID string) bool
+
+	OnAuction(ctx sdk.Context, auctionID string)
+	OnAuctionBid(ctx sdk.Context, auctionID string, bidderAddress string)
+	OnAuctionWinnerSelected(ctx sdk.Context, auctionID string)
+}
+
+// AuctionHooksWrapper is a wrapper for modules to inject AuctionUsageKeeper using depinject.
+// Reference: https://github.com/cosmos/cosmos-sdk/tree/v0.50.3/core/appmodule#resolving-circular-dependencies
+type AuctionHooksWrapper struct{ AuctionUsageKeeper }
+
+// IsOnePerModuleType implements the depinject.OnePerModuleType interface.
+func (AuctionHooksWrapper) IsOnePerModuleType() {}

x/auction/keeper/keeper.go

@@ -73,7 +73,7 @@ type Keeper struct {
 	bankKeeper    bank.Keeper
 
 	// Track auction usage in other cosmos-sdk modules (more like a usage tracker).
-	// usageKeepers []types.AuctionUsageKeeper
+	usageKeepers []auctiontypes.AuctionUsageKeeper
 
 	// state management
 	Schema   collections.Schema
@@ -88,7 +88,7 @@ func NewKeeper(
 	storeService storetypes.KVStoreService,
 	accountKeeper auth.AccountKeeper,
 	bankKeeper bank.Keeper,
-) Keeper {
+) *Keeper {
 	sb := collections.NewSchemaBuilder(storeService)
 	k := Keeper{
 		cdc:           cdc,
@@ -97,7 +97,7 @@ func NewKeeper(
 		Params:        collections.NewItem(sb, auctiontypes.ParamsPrefix, "params", codec.CollValue[auctiontypes.Params](cdc)),
 		Auctions:      collections.NewIndexedMap(sb, auctiontypes.AuctionsPrefix, "auctions", collections.StringKey, codec.CollValue[auctiontypes.Auction](cdc), newAuctionIndexes(sb)),
 		Bids:          collections.NewIndexedMap(sb, auctiontypes.BidsPrefix, "bids", collections.PairKeyCodec(collections.StringKey, collections.StringKey), codec.CollValue[auctiontypes.Bid](cdc), newBidsIndexes(sb)),
-		// usageKeepers:  usageKeepers,
+		usageKeepers:  nil,
 	}
 
 	schema, err := sb.Build()
@@ -107,12 +107,16 @@ func NewKeeper(
 
 	k.Schema = schema
 
-	return k
+	return &k
 }
 
-// func (k *Keeper) SetUsageKeepers(usageKeepers []types.AuctionUsageKeeper) {
-// 	k.usageKeepers = usageKeepers
-// }
+func (k *Keeper) SetUsageKeepers(usageKeepers []auctiontypes.AuctionUsageKeeper) {
+	if k.usageKeepers != nil {
+		panic("cannot set auction hooks twice")
+	}
+
+	k.usageKeepers = usageKeepers
+}
 
 // SaveAuction - saves a auction to the store.
 func (k Keeper) SaveAuction(ctx sdk.Context, auction *auctiontypes.Auction) error {

x/auction/keeper/msg_server.go

@@ -10,11 +10,11 @@ import (
 var _ auctiontypes.MsgServer = msgServer{}
 
 type msgServer struct {
-	k Keeper
+	k *Keeper
 }
 
 // NewMsgServerImpl returns an implementation of the module MsgServer interface.
-func NewMsgServerImpl(keeper Keeper) auctiontypes.MsgServer {
+func NewMsgServerImpl(keeper *Keeper) auctiontypes.MsgServer {
 	return &msgServer{k: keeper}
 }
 

x/auction/keeper/query_server.go

@@ -13,11 +13,11 @@ import (
 var _ auctiontypes.QueryServer = queryServer{}
 
 type queryServer struct {
-	k Keeper
+	k *Keeper
 }
 
 // NewQueryServerImpl returns an implementation of the module QueryServer.
-func NewQueryServerImpl(k Keeper) auctiontypes.QueryServer {
+func NewQueryServerImpl(k *Keeper) auctiontypes.QueryServer {
 	return queryServer{k}
 }
 

x/auction/module/abci.go

@@ -9,7 +9,7 @@ import (
 )
 
 // EndBlocker is called every block
-func EndBlocker(ctx context.Context, k keeper.Keeper) error {
+func EndBlocker(ctx context.Context, k *keeper.Keeper) error {
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 
 	return k.EndBlockerProcessAuctions(sdkCtx)

x/auction/module/depinject.go

@@ -4,12 +4,14 @@ import (
 	"cosmossdk.io/core/appmodule"
 	"cosmossdk.io/core/store"
 	"cosmossdk.io/depinject"
+	"golang.org/x/exp/maps"
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	auth "github.com/cosmos/cosmos-sdk/x/auth/keeper"
 	bank "github.com/cosmos/cosmos-sdk/x/bank/keeper"
 
 	modulev1 "git.vdb.to/cerc-io/laconic2d/api/cerc/auction/module/v1"
+	"git.vdb.to/cerc-io/laconic2d/x/auction"
 	"git.vdb.to/cerc-io/laconic2d/x/auction/keeper"
 )
 
@@ -25,6 +27,7 @@ func init() {
 	appmodule.Register(
 		&modulev1.Module{},
 		appmodule.Provide(ProvideModule),
+		appmodule.Invoke(InvokeSetAuctionHooks),
 	)
 }
 
@@ -41,7 +44,11 @@ type ModuleInputs struct {
 type ModuleOutputs struct {
 	depinject.Out
 
-	Keeper keeper.Keeper
+	// Use * as required by InvokeSetAuctionHooks
+	// https://github.com/cosmos/cosmos-sdk/tree/v0.50.3/core/appmodule#invoker-invocation-details
+	// https://github.com/cosmos/cosmos-sdk/tree/v0.50.3/core/appmodule#regular-golang-types
+	Keeper *keeper.Keeper
+
 	Module appmodule.AppModule
 }
 
@@ -51,3 +58,25 @@ func ProvideModule(in ModuleInputs) ModuleOutputs {
 
 	return ModuleOutputs{Module: m, Keeper: k}
 }
+
+func InvokeSetAuctionHooks(
+	config *modulev1.Module,
+	keeper *keeper.Keeper,
+	auctionHooks map[string]auction.AuctionHooksWrapper,
+) error {
+	// all arguments to invokers are optional
+	if keeper == nil || config == nil {
+		return nil
+	}
+
+	var usageKeepers []auction.AuctionUsageKeeper
+
+	for _, modName := range maps.Keys(auctionHooks) {
+		hook := auctionHooks[modName]
+		usageKeepers = append(usageKeepers, hook)
+	}
+
+	keeper.SetUsageKeepers(usageKeepers)
+
+	return nil
+}

x/auction/module/module.go

@@ -36,11 +36,11 @@ const ConsensusVersion = 1
 
 type AppModule struct {
 	cdc    codec.Codec
-	keeper keeper.Keeper
+	keeper *keeper.Keeper
 }
 
 // NewAppModule creates a new AppModule object
-func NewAppModule(cdc codec.Codec, keeper keeper.Keeper) AppModule {
+func NewAppModule(cdc codec.Codec, keeper *keeper.Keeper) AppModule {
 	return AppModule{
 		cdc:    cdc,
 		keeper: keeper,

x/registry/keeper/keeper.go

@@ -89,7 +89,7 @@ type Keeper struct {
 	bankKeeper    bank.Keeper
 	recordKeeper  RecordKeeper
 	bondKeeper    bondkeeper.Keeper
-	auctionKeeper auctionkeeper.Keeper
+	auctionKeeper *auctionkeeper.Keeper
 
 	// state management
 	Schema               collections.Schema
@@ -109,7 +109,7 @@ func NewKeeper(
 	bankKeeper bank.Keeper,
 	recordKeeper RecordKeeper,
 	bondKeeper bondkeeper.Keeper,
-	auctionKeeper auctionkeeper.Keeper,
+	auctionKeeper *auctionkeeper.Keeper,
 ) Keeper {
 	sb := collections.NewSchemaBuilder(storeService)
 	k := Keeper{

x/registry/keeper/record_keeper.go

@@ -8,19 +8,55 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 
+	auctiontypes "git.vdb.to/cerc-io/laconic2d/x/auction"
 	auctionkeeper "git.vdb.to/cerc-io/laconic2d/x/auction/keeper"
 	registrytypes "git.vdb.to/cerc-io/laconic2d/x/registry"
 )
 
 // TODO: Add methods
 
+// Record keeper implements the bond usage keeper interface.
+var (
+	_ auctiontypes.AuctionUsageKeeper = RecordKeeper{}
+	// _ bondtypes.BondUsageKeeper       = (*RecordKeeper)(nil)
+)
+
 // RecordKeeper exposes the bare minimal read-only API for other modules.
 type RecordKeeper struct {
 	cdc           codec.BinaryCodec // The wire codec for binary encoding/decoding.
-	auctionKeeper auctionkeeper.Keeper
+	auctionKeeper *auctionkeeper.Keeper
 	// storeKey      storetypes.StoreKey // Unexposed key to access store from sdk.Context
 }
 
+// NewRecordKeeper creates new instances of the registry RecordKeeper
+func NewRecordKeeper(cdc codec.BinaryCodec, auctionKeeper *auctionkeeper.Keeper) RecordKeeper {
+	return RecordKeeper{
+		auctionKeeper: auctionKeeper,
+		cdc:           cdc,
+	}
+}
+
+// ModuleName returns the module name.
+func (k RecordKeeper) ModuleName() string {
+	return registrytypes.ModuleName
+}
+
+func (k RecordKeeper) UsesAuction(ctx sdk.Context, auctionID string) bool {
+	panic("unimplemented")
+}
+
+func (k RecordKeeper) OnAuction(ctx sdk.Context, auctionID string) {
+	panic("unimplemented")
+}
+
+func (k RecordKeeper) OnAuctionBid(ctx sdk.Context, auctionID string, bidderAddress string) {
+	panic("unimplemented")
+}
+
+func (k RecordKeeper) OnAuctionWinnerSelected(ctx sdk.Context, auctionID string) {
+	panic("unimplemented")
+}
+
 // RenewRecord renews a record.
 func (k Keeper) RenewRecord(ctx sdk.Context, msg registrytypes.MsgRenewRecord) error {
 	if has, err := k.HasRecord(ctx, msg.RecordId); !has {

x/registry/module/depinject.go

@@ -10,6 +10,7 @@ import (
 	bank "github.com/cosmos/cosmos-sdk/x/bank/keeper"
 
 	modulev1 "git.vdb.to/cerc-io/laconic2d/api/cerc/registry/module/v1"
+	auction "git.vdb.to/cerc-io/laconic2d/x/auction"
 	auctionkeeper "git.vdb.to/cerc-io/laconic2d/x/auction/keeper"
 	bondkeeper "git.vdb.to/cerc-io/laconic2d/x/bond/keeper"
 	"git.vdb.to/cerc-io/laconic2d/x/registry/keeper"
@@ -40,7 +41,7 @@ type ModuleInputs struct {
 	BankKeeper    bank.Keeper
 
 	BondKeeper    bondkeeper.Keeper
-	AuctionKeeper auctionkeeper.Keeper
+	AuctionKeeper *auctionkeeper.Keeper
 }
 
 type ModuleOutputs struct {
@@ -48,19 +49,23 @@ type ModuleOutputs struct {
 
 	Keeper keeper.Keeper
 	Module appmodule.AppModule
+
+	AuctionHooks auction.AuctionHooksWrapper
 }
 
 func ProvideModule(in ModuleInputs) ModuleOutputs {
+	recordKeeper := keeper.NewRecordKeeper(in.Cdc, in.AuctionKeeper)
+
 	k := keeper.NewKeeper(
 		in.Cdc,
 		in.StoreService,
 		in.AccountKeeper,
 		in.BankKeeper,
-		keeper.RecordKeeper{},
+		recordKeeper,
 		in.BondKeeper,
 		in.AuctionKeeper,
 	)
 	m := NewAppModule(in.Cdc, k)
 
-	return ModuleOutputs{Module: m, Keeper: k}
+	return ModuleOutputs{Module: m, Keeper: k, AuctionHooks: auction.AuctionHooksWrapper{AuctionUsageKeeper: recordKeeper}}
 }