chore: interchain accounts cleanup, cli alias (#362)

* adding ica alias for interchain-accounts queries

* refactoring bind port and claim capability functionality, code cleanup and godocs

modules/apps/27-interchain-accounts/client/cli/query.go

@@ -13,6 +13,7 @@ import (
 func GetQueryCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:                        "interchain-accounts",
+		Aliases:                    []string{"ica"},
 		Short:                      "Querying commands for the interchain accounts module",
 		DisableFlagParsing:         true,
 		SuggestionsMinimumDistance: 2,

modules/apps/27-interchain-accounts/genesis.go

@@ -6,12 +6,15 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/ibc-go/modules/apps/27-interchain-accounts/keeper"
 	"github.com/cosmos/ibc-go/modules/apps/27-interchain-accounts/types"
+
+	host "github.com/cosmos/ibc-go/modules/core/24-host"
 )
 
+// InitGenesis initializes the interchain accounts application state from a provided genesis state
 func InitGenesis(ctx sdk.Context, keeper keeper.Keeper, state types.GenesisState) {
 	if !keeper.IsBound(ctx, state.PortId) {
-		err := keeper.BindPort(ctx, state.PortId)
-		if err != nil {
+		cap := keeper.BindPort(ctx, state.PortId)
+		if err := keeper.ClaimCapability(ctx, cap, host.PortPath(state.PortId)); err != nil {
 			panic(fmt.Sprintf("could not claim port capability: %v", err))
 		}
 	}

modules/apps/27-interchain-accounts/keeper/account.go

@@ -17,23 +17,21 @@ import (
 // already in use. Gaining access to interchain accounts whose channels have closed
 // cannot be done with this function. A regular MsgChanOpenInit must be used.
 func (k Keeper) InitInterchainAccount(ctx sdk.Context, connectionID, counterpartyConnectionID, owner string) error {
-	portId, err := types.GeneratePortID(owner, connectionID, counterpartyConnectionID)
+	portID, err := types.GeneratePortID(owner, connectionID, counterpartyConnectionID)
 	if err != nil {
 		return err
 	}
 
-	// check if the port is already bound
-	if k.IsBound(ctx, portId) {
-		return sdkerrors.Wrap(types.ErrPortAlreadyBound, portId)
+	if k.IsBound(ctx, portID) {
+		return sdkerrors.Wrap(types.ErrPortAlreadyBound, portID)
 	}
 
-	portCap := k.portKeeper.BindPort(ctx, portId)
-	err = k.ClaimCapability(ctx, portCap, host.PortPath(portId))
-	if err != nil {
+	cap := k.BindPort(ctx, portID)
+	if err := k.ClaimCapability(ctx, cap, host.PortPath(portID)); err != nil {
 		return sdkerrors.Wrap(err, "unable to bind to newly generated portID")
 	}
 
-	msg := channeltypes.NewMsgChannelOpenInit(portId, types.Version, channeltypes.ORDERED, []string{connectionID}, types.PortID, types.ModuleName)
+	msg := channeltypes.NewMsgChannelOpenInit(portID, types.Version, channeltypes.ORDERED, []string{connectionID}, types.PortID, types.ModuleName)
 	handler := k.msgRouter.Handler(msg)
 	if _, err := handler(ctx, msg); err != nil {
 		return err
@@ -43,23 +41,22 @@ func (k Keeper) InitInterchainAccount(ctx sdk.Context, connectionID, counterpart
 }
 
 // Register interchain account if it has not already been created
-func (k Keeper) RegisterInterchainAccount(ctx sdk.Context, portId string) {
-	address := types.GenerateAddress(portId)
+func (k Keeper) RegisterInterchainAccount(ctx sdk.Context, portID string) {
+	address := types.GenerateAddress(portID)
 
 	account := k.accountKeeper.GetAccount(ctx, address)
 	if account != nil {
-		// account already created, return no-op
 		return
 	}
 
 	interchainAccount := types.NewInterchainAccount(
 		authtypes.NewBaseAccountWithAddress(address),
-		portId,
+		portID,
 	)
 
 	k.accountKeeper.NewAccount(ctx, interchainAccount)
 	k.accountKeeper.SetAccount(ctx, interchainAccount)
-	k.SetInterchainAccountAddress(ctx, portId, interchainAccount.Address)
+	k.SetInterchainAccountAddress(ctx, portID, interchainAccount.Address)
 }
 
 func (k Keeper) GetInterchainAccount(ctx sdk.Context, addr sdk.AccAddress) (types.InterchainAccount, error) {

modules/apps/27-interchain-accounts/keeper/keeper.go

@@ -9,10 +9,10 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	capabilitykeeper "github.com/cosmos/cosmos-sdk/x/capability/keeper"
 	capabilitytypes "github.com/cosmos/cosmos-sdk/x/capability/types"
-	host "github.com/cosmos/ibc-go/modules/core/24-host"
 	"github.com/tendermint/tendermint/libs/log"
 
 	"github.com/cosmos/ibc-go/modules/apps/27-interchain-accounts/types"
+	host "github.com/cosmos/ibc-go/modules/core/24-host"
 )
 
 // Keeper defines the IBC transfer keeper
@@ -49,6 +49,7 @@ func NewKeeper(
 	}
 }
 
+// SerializeCosmosTx marshals data to bytes using the provided codec
 func (k Keeper) SerializeCosmosTx(cdc codec.BinaryCodec, data interface{}) ([]byte, error) {
 	msgs := make([]sdk.Msg, 0)
 	switch data := data.(type) {
@@ -86,68 +87,63 @@ func (k Keeper) SerializeCosmosTx(cdc codec.BinaryCodec, data interface{}) ([]by
 	return bz, nil
 }
 
+// Logger returns the application logger, scoped to the associated module
 func (k Keeper) Logger(ctx sdk.Context) log.Logger {
 	return ctx.Logger().With("module", fmt.Sprintf("x/%s-%s", host.ModuleName, types.ModuleName))
 }
 
-// IsBound checks if the interchain account module is already bound to the desired port
-func (k Keeper) IsBound(ctx sdk.Context, portID string) bool {
-	_, ok := k.scopedKeeper.GetCapability(ctx, host.PortPath(portID))
-	return ok
+// GetPort returns the portID for the interchain accounts module. Used in ExportGenesis
+func (k Keeper) GetPort(ctx sdk.Context) string {
+	store := ctx.KVStore(k.storeKey)
+	return string(store.Get([]byte(types.PortKey)))
 }
 
-// BindPort defines a wrapper function for the port Keeper's BindPort function in
-// order to expose it to module's InitGenesis function
-func (k Keeper) BindPort(ctx sdk.Context, portID string) error {
-	// Set the portID into our store so we can retrieve it later
+// BindPort stores the provided portID and binds to it, returning the associated capability
+func (k Keeper) BindPort(ctx sdk.Context, portID string) *capabilitytypes.Capability {
 	store := ctx.KVStore(k.storeKey)
 	store.Set([]byte(types.PortKey), []byte(portID))
 
-	cap := k.portKeeper.BindPort(ctx, portID)
-	return k.ClaimCapability(ctx, cap, host.PortPath(portID))
+	return k.portKeeper.BindPort(ctx, portID)
 }
 
-// GetPort returns the portID for the interchain accounts module. Used in ExportGenesis
-func (k Keeper) GetPort(ctx sdk.Context) string {
-	store := ctx.KVStore(k.storeKey)
-	return string(store.Get([]byte(types.PortKey)))
+// IsBound checks if the interchain account module is already bound to the desired port
+func (k Keeper) IsBound(ctx sdk.Context, portID string) bool {
+	_, ok := k.scopedKeeper.GetCapability(ctx, host.PortPath(portID))
+	return ok
 }
 
-// ClaimCapability allows the transfer module that can claim a capability that IBC module
-// passes to it
-func (k Keeper) ClaimCapability(ctx sdk.Context, cap *capabilitytypes.Capability, name string) error {
-	return k.scopedKeeper.ClaimCapability(ctx, cap, name)
+// AuthenticateCapability wraps the scopedKeeper's AuthenticateCapability function
+func (k Keeper) AuthenticateCapability(ctx sdk.Context, cap *capabilitytypes.Capability, name string) bool {
+	return k.scopedKeeper.AuthenticateCapability(ctx, cap, name)
 }
 
-func (k Keeper) SetActiveChannel(ctx sdk.Context, portId, channelId string) error {
-	store := ctx.KVStore(k.storeKey)
-
-	key := types.KeyActiveChannel(portId)
-	store.Set(key, []byte(channelId))
-	return nil
+// ClaimCapability wraps the scopedKeeper's ClaimCapability function
+func (k Keeper) ClaimCapability(ctx sdk.Context, cap *capabilitytypes.Capability, name string) error {
+	return k.scopedKeeper.ClaimCapability(ctx, cap, name)
 }
 
+// GetActiveChannel retrieves the active channelID from the store keyed by the provided portID
 func (k Keeper) GetActiveChannel(ctx sdk.Context, portId string) (string, bool) {
 	store := ctx.KVStore(k.storeKey)
 	key := types.KeyActiveChannel(portId)
+
 	if !store.Has(key) {
 		return "", false
 	}
 
-	activeChannel := string(store.Get(key))
-	return activeChannel, true
+	return string(store.Get(key)), true
 }
 
-// IsActiveChannel returns true if there exists an active channel for
-// the provided portID and false otherwise.
-func (k Keeper) IsActiveChannel(ctx sdk.Context, portId string) bool {
-	_, found := k.GetActiveChannel(ctx, portId)
-	return found
+// SetActiveChannel stores the active channelID, keyed by the provided portID
+func (k Keeper) SetActiveChannel(ctx sdk.Context, portID, channelID string) {
+	store := ctx.KVStore(k.storeKey)
+	store.Set(types.KeyActiveChannel(portID), []byte(channelID))
 }
 
-// AuthenticateCapability wraps the scopedKeeper's AuthenticateCapability function
-func (k Keeper) AuthenticateCapability(ctx sdk.Context, cap *capabilitytypes.Capability, name string) bool {
-	return k.scopedKeeper.AuthenticateCapability(ctx, cap, name)
+// IsActiveChannel returns true if there exists an active channel for the provided portID, otherwise false
+func (k Keeper) IsActiveChannel(ctx sdk.Context, portID string) bool {
+	_, ok := k.GetActiveChannel(ctx, portID)
+	return ok
 }
 
 // GetInterchainAccountAddress retrieves the InterchainAccount address from the store keyed by the provided portID