removing GetPort in favour of GetAllPorts

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

@@ -24,9 +24,8 @@ func InitGenesis(ctx sdk.Context, keeper keeper.Keeper, state types.GenesisState
 func ExportGenesis(ctx sdk.Context, keeper keeper.Keeper) *types.GenesisState {
 	// TODO: Using a range query with KVStorePrefixIterator export all port IDs
 	// See https://github.com/cosmos/ibc-go/issues/448
-	portID := keeper.GetPort(ctx, types.PortID)
 
 	return &types.GenesisState{
-		PortId: portID,
+		PortId: types.PortID,
 	}
 }

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

@@ -2,6 +2,7 @@ package keeper
 
 import (
 	"fmt"
+	"strings"
 
 	baseapp "github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/codec"
@@ -86,10 +87,20 @@ func (k Keeper) Logger(ctx sdk.Context) log.Logger {
 	return ctx.Logger().With("module", fmt.Sprintf("x/%s-%s", host.ModuleName, types.ModuleName))
 }
 
-// GetPort returns the portID for the interchain accounts module. Used in ExportGenesis
-func (k Keeper) GetPort(ctx sdk.Context, portID string) string {
+// GetAllPorts returns all ports to which the interchain accounts module is bound. Used in ExportGenesis
+func (k Keeper) GetAllPorts(ctx sdk.Context) []string {
 	store := ctx.KVStore(k.storeKey)
-	return string(store.Get(types.KeyPort(portID)))
+	iterator := sdk.KVStorePrefixIterator(store, []byte(types.PortKeyPrefix))
+	defer iterator.Close()
+
+	var ports []string
+	for ; iterator.Valid(); iterator.Next() {
+		keySplit := strings.Split(string(iterator.Key()), "/")
+
+		ports = append(ports, keySplit[1])
+	}
+
+	return ports
 }
 
 // BindPort stores the provided portID and binds to it, returning the associated capability

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

@@ -108,9 +108,17 @@ func (suite *KeeperTestSuite) TestIsBound() {
 	suite.Require().True(isBound)
 }
 
-func (suite *KeeperTestSuite) TestGetPort() {
-	port := suite.chainA.GetSimApp().ICAKeeper.GetPort(suite.chainA.GetContext(), types.PortID)
-	suite.Require().Equal(string([]byte{0x01}), port)
+func (suite *KeeperTestSuite) TestGetAllPorts() {
+	suite.SetupTest()
+	path := NewICAPath(suite.chainA, suite.chainB)
+	suite.coordinator.SetupConnections(path)
+
+	err := SetupICAPath(path, TestOwnerAddress)
+	suite.Require().NoError(err)
+
+	ports := suite.chainA.GetSimApp().ICAKeeper.GetAllPorts(suite.chainA.GetContext())
+	suite.Require().Contains(ports, types.PortID)
+	suite.Require().Contains(ports, TestPortID)
 }
 
 func (suite *KeeperTestSuite) TestGetInterchainAccountAddress() {