Added interface to accept any type of ADR 031 message router. (#2058)

## Description

Updated the controller and host keeper to take in an interface for the router. This allows systems that implement ADR 031, but do not use the default baseapp.router to use ICA.

closes: #2044

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

- [ ] Targeted PR against correct branch (see [CONTRIBUTING.md](https://github.com/cosmos/ibc-go/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
- [ ] Code follows the [module structure standards](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules/structure.md).
- [ ] Wrote unit and integration [tests](https://github.com/cosmos/ibc-go/blob/master/CONTRIBUTING.md#testing)
- [ ] Updated relevant documentation (`docs/`) or specification (`x/<module>/spec/`)
- [ ] Added relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
- [ ] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
- [ ] Re-reviewed `Files changed` in the Github PR explorer
- [ ] Review `Codecov Report` in the comment section below once CI passes

(cherry picked from commit 397b88c)

# Conflicts:
#	CHANGELOG.md
#	modules/apps/27-interchain-accounts/controller/keeper/keeper.go
#	modules/apps/27-interchain-accounts/host/keeper/keeper.go

CHANGELOG.md

@@ -45,7 +45,83 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (core/04-channel) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `NewPacketId` has been renamed to `NewPacketID` to comply with go linting rules.
 * (core/ante) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `AnteDecorator` has been renamed to `RedundancyDecorator` to comply with go linting rules and to give more clarity to the purpose of the Decorator.
 * (core/ante) [\#1820](https://github.com/cosmos/ibc-go/pull/1418) `RedundancyDecorator` has been renamed to `RedundantRelayDecorator` to make the name for explicit.
+<<<<<<< HEAD
 * (testing) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `MockIBCApp` has been renamed to `IBCApp` and `MockEmptyAcknowledgement` has been renamed to `EmptyAcknowledgement` to comply with go linting rules
+=======
+* (testing) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) `MockIBCApp` has been renamed to `IBCApp` and `MockEmptyAcknowledgement` has been renamed to `EmptyAcknowledgement` to comply with go linting rules.
+* (light-clients/tendermint)[\#1768](https://github.com/cosmos/ibc-go/pull/1768) Removed `AllowUpdateAfterExpiry`, `AllowUpdateAfterMisbehaviour` booleans as they are deprecated (see ADR026)
+* (06-solomachine) [\#1679](https://github.com/cosmos/ibc-go/pull/1679) Remove `types` sub-package from `06-solomachine` lightclient directory. 
+* (07-tendermint) [\#1677](https://github.com/cosmos/ibc-go/pull/1677) Remove `types` sub-package from `07-tendermint` lightclient directory. 
+* (06-solomachine) [\#1687](https://github.com/cosmos/ibc-go/pull/1687) Bump `06-solomachine` protobuf version from `v2` to `v3`.
+* (06-solomachine) [\#1687](https://github.com/cosmos/ibc-go/pull/1687) Removed `DataType` enum and associated message types from `06-solomachine`. `DataType` has been removed from `SignBytes` and `SignatureAndData` in favour of `path`.
+* (02-client) [\#598](https://github.com/cosmos/ibc-go/pull/598) The client state and consensus state return value has been removed from `VerifyUpgradeAndUpdateState`. Light client implementations must update the client state and consensus state after verifying a valid client upgrade. 
+* (06-solomachine) [\#1100](https://github.com/cosmos/ibc-go/pull/1100) Remove `GetClientID` function from 06-solomachine `Misbehaviour` type.
+* (06-solomachine) [\#1100](https://github.com/cosmos/ibc-go/pull/1100) Deprecate `ClientId` field in 06-solomachine `Misbehaviour` type. 
+* (07-tendermint) [\#1097](https://github.com/cosmos/ibc-go/pull/1097) Remove `GetClientID` function from 07-tendermint `Misbehaviour` type.
+* (07-tendermint) [\#1097](https://github.com/cosmos/ibc-go/pull/1097) Deprecate `ClientId` field in 07-tendermint `Misbehaviour` type.
+* (modules/core/exported) [\#1107](https://github.com/cosmos/ibc-go/pull/1107) Merging the `Header` and `Misbehaviour` interfaces into a single `ClientMessage` type.
+* (06-solomachine)[\#1906](https://github.com/cosmos/ibc-go/pull/1906/files) Removed `AllowUpdateAfterProposal` boolean as it has been deprecated (see 01_concepts of the solo machine spec for more details).
+* (07-tendermint) [\#1896](https://github.com/cosmos/ibc-go/pull/1896) Remove error return from `IterateConsensusStateAscending` in `07-tendermint`.
+* (apps/27-interchain-accounts) [\#2035](https://github.com/cosmos/ibc-go/pull/2035) Interchain accounts host and controller Keepers now expects a keeper which fulfills the expected `ScopedKeeper` interface for the capability keeper.
+* (transfer) [\#2034](https://github.com/cosmos/ibc-go/pull/2034) Transfer Keeper now expects a keeper which fulfills the expected `ScopedKeeper` interface for the capability keeper.
+* (05-port) [\#2025](https://github.com/cosmos/ibc-go/pull/2025) Port Keeper now expects a keeper which fulfills the expected `ScopedKeeper` interface for the capability keeper.
+* (04-channel) [\#2024](https://github.com/cosmos/ibc-go/pull/2024) Channel Keeper now expects a keeper which fulfills the expected `ScopedKeeper` interface for the capability keeper.
+* (apps/27-interchain-accounts) [\#2058](https://github.com/cosmos/ibc-go/pull/2058) Added `MessageRouter` interface and replaced `*baseapp.MsgServiceRouter` with it. The controller and host keepers of apps/27-interchain-accounts have been updated to use it.
+
+### State Machine Breaking
+
+### Improvements
+
+* (linting) [\#1418](https://github.com/cosmos/ibc-go/pull/1418) Fix linting errors, resulting compatiblity with go1.18 linting style, golangci-lint 1.46.2 and the revivie linter.  This caused breaking changes in core/04-channel, core/ante, and the testing library.
+* (modules/light-clients/07-tendermint) [\#1713](https://github.com/cosmos/ibc-go/pull/1713) Allow client upgrade proposals to update `TrustingPeriod`. See ADR-026 for context.
+* (modules/core/02-client) [\#1188](https://github.com/cosmos/ibc-go/pull/1188/files) Routing `MsgSubmitMisbehaviour` to `UpdateClient` keeper function. Deprecating `SubmitMisbehaviour` endpoint.
+* (modules/core/02-client) [\#1208](https://github.com/cosmos/ibc-go/pull/1208) Replace `CheckHeaderAndUpdateState` usage in 02-client with calls to `VerifyClientMessage`, `CheckForMisbehaviour`, `UpdateStateOnMisbehaviour` and `UpdateState`. 
+* (modules/light-clients/09-localhost) [\#1187](https://github.com/cosmos/ibc-go/pull/1187/) Removing localhost light client implementation as it is not functional. An upgrade handler is provided in `modules/migrations/v5` to prune `09-localhost` clients and consensus states from the store.
+* [\#1186](https://github.com/cosmos/ibc-go/pull/1186/files) Removing `GetRoot` function from ConsensusState interface in `02-client`. `GetRoot` is unused by core IBC. 
+* (modules/core/02-client) [\#1196](https://github.com/cosmos/ibc-go/pull/1196) Adding VerifyClientMessage to ClientState interface. 
+* (modules/core/02-client) [\#1198](https://github.com/cosmos/ibc-go/pull/1198) Adding UpdateStateOnMisbehaviour to ClientState interface. 
+* (modules/core/02-client) [\#1170](https://github.com/cosmos/ibc-go/pull/1170) Updating `ClientUpdateProposal` to set client state in lightclient implementations `CheckSubstituteAndUpdateState` methods.
+* (modules/core/02-client) [\#1197](https://github.com/cosmos/ibc-go/pull/1197) Adding `CheckForMisbehaviour` to `ClientState` interface. 
+* (modules/core/02-client) [\#1195](https://github.com/cosmos/ibc-go/pull/1210) Removing `CheckHeaderAndUpdateState` from `ClientState` interface & associated light client implementations. 
+* (modules/core/02-client) [\#1189](https://github.com/cosmos/ibc-go/pull/1212) Removing `CheckMisbehaviourAndUpdateState` from `ClientState` interface & associated light client implementations.
+* (modules/core/exported) [\#1206](https://github.com/cosmos/ibc-go/pull/1206) Adding new method `UpdateState` to `ClientState` interface.
+* (modules/core/02-client) [\#1741](https://github.com/cosmos/ibc-go/pull/1741) Emitting a new `upgrade_chain` event upon setting upgrade consensus state.
+* (client) [\#724](https://github.com/cosmos/ibc-go/pull/724) `IsRevisionFormat` and `IsClientIDFormat` have been updated to disallow newlines before the dash used to separate the chainID and revision number, and the client type and client sequence.
+* (02-client/cli) [\#897](https://github.com/cosmos/ibc-go/pull/897) Remove `GetClientID()` from `Misbehaviour` interface. Submit client misbehaviour cli command requires an explicit client id now.
+* (06-solomachine) [\#1972](https://github.com/cosmos/ibc-go/pull/1972) Solo machine implementation of `ZeroCustomFields` fn now panics as the fn is only used for upgrades which solo machine does not support. 
+
+### Features
+
+### Bug Fixes
+
+* (makefile) [\#1785](https://github.com/cosmos/ibc-go/pull/1785) Fetch the correct versions of protocol buffers dependencies from tendermint, cosmos-sdk, and ics23.
+* (light-clients/solomachine) [#1839](https://github.com/cosmos/ibc-go/issues/1839) Fixed usage of the new diversifier in validation of changing diversifiers for the solo machine. The current diversifier must sign over the new diversifier.
+* (light-clients/07-tendermint) [\#1674](https://github.com/cosmos/ibc-go/pull/1674) Submitted ClientState is zeroed out before checking the proof in order to prevent the proposal from containing information governance is not actually voting on.
+* (modules/core/02-client)[\#1676](https://github.com/cosmos/ibc-go/pull/1676) ClientState must be zeroed out for `UpgradeProposals` to pass validation. This prevents a proposal containing information governance is not actually voting on.
+
+## [v4.0.0](https://github.com/cosmos/ibc-go/releases/tag/v4.0.0) - 2022-08-12
+
+### Dependencies
+
+* [\#1627](https://github.com/cosmos/ibc-go/pull/1627) Bump Go version to 1.18
+* [\#1905](https://github.com/cosmos/ibc-go/pull/1905) Bump SDK version to v0.45.7
+
+### API Breaking
+
+* (core/04-channel) [\#1792](https://github.com/cosmos/ibc-go/pull/1792) Remove `PreviousChannelID` from `NewMsgChannelOpenTry` arguments. `MsgChannelOpenTry.ValidateBasic()` returns error if the deprecated `PreviousChannelID` is not empty. 
+* (core/03-connection) [\#1797](https://github.com/cosmos/ibc-go/pull/1797) Remove `PreviousConnectionID` from `NewMsgConnectionOpenTry` arguments. `MsgConnectionOpenTry.ValidateBasic()` returns error if the deprecated `PreviousConnectionID` is not empty.
+* (modules/core/03-connection) [\#1672](https://github.com/cosmos/ibc-go/pull/1672) Remove crossing hellos from connection handshakes. The `PreviousConnectionId` in `MsgConnectionOpenTry` has been deprecated.
+* (modules/core/04-channel) [\#1317](https://github.com/cosmos/ibc-go/pull/1317) Remove crossing hellos from channel handshakes. The `PreviousChannelId` in `MsgChannelOpenTry` has been deprecated.  
+* (transfer) [\#1250](https://github.com/cosmos/ibc-go/pull/1250) Deprecate `GetTransferAccount` since the `transfer` module account is never used.
+* (channel) [\#1283](https://github.com/cosmos/ibc-go/pull/1283) The `OnChanOpenInit` application callback now returns a version string in line with the latest [spec changes](https://github.com/cosmos/ibc/pull/629).  
+* (modules/29-fee)[\#1338](https://github.com/cosmos/ibc-go/pull/1338) Renaming `Result` field in `IncentivizedAcknowledgement` to `AppAcknowledgement`.
+* (modules/29-fee)[\#1343](https://github.com/cosmos/ibc-go/pull/1343) Renaming `KeyForwardRelayerAddress` to `KeyRelayerAddressForAsyncAck`, and `ParseKeyForwardRelayerAddress` to `ParseKeyRelayerAddressForAsyncAck`.
+* (apps/27-interchain-accounts)[\#1432](https://github.com/cosmos/ibc-go/pull/1432) Updating `RegisterInterchainAccount` to include an additional `version` argument, supporting ICS29 fee middleware functionality in ICS27 interchain accounts.
+* (apps/27-interchain-accounts)[\#1565](https://github.com/cosmos/ibc-go/pull/1565) Removing `NewErrorAcknowledgement` in favour of `channeltypes.NewErrorAcknowledgement`.
+* (transfer)[\#1565](https://github.com/cosmos/ibc-go/pull/1565) Removing `NewErrorAcknowledgement` in favour of `channeltypes.NewErrorAcknowledgement`.
+* (channel)[\#1565](https://github.com/cosmos/ibc-go/pull/1565) Updating `NewErrorAcknowledgement` to accept an error instead of a string and removing the possibility of non-deterministic writes to application state.
+* (core/04-channel)[\#1636](https://github.com/cosmos/ibc-go/pull/1636) Removing `SplitChannelVersion` and `MergeChannelVersions` functions since they are not used.
+>>>>>>> 397b88c (Added interface to accept any type of ADR 031 message router.  (#2058))
 
 ### State Machine Breaking
 

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

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"strings"
 
-	baseapp "github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/codec"
 	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -31,14 +30,18 @@ type Keeper struct {
 
 	scopedKeeper capabilitykeeper.ScopedKeeper
 
-	msgRouter *baseapp.MsgServiceRouter
+	msgRouter icatypes.MessageRouter
 }
 
 // NewKeeper creates a new interchain accounts controller Keeper instance
 func NewKeeper(
 	cdc codec.BinaryCodec, key storetypes.StoreKey, paramSpace paramtypes.Subspace,
 	ics4Wrapper icatypes.ICS4Wrapper, channelKeeper icatypes.ChannelKeeper, portKeeper icatypes.PortKeeper,
+<<<<<<< HEAD
 	scopedKeeper capabilitykeeper.ScopedKeeper, msgRouter *baseapp.MsgServiceRouter,
+=======
+	scopedKeeper icatypes.ScopedKeeper, msgRouter icatypes.MessageRouter,
+>>>>>>> 397b88c (Added interface to accept any type of ADR 031 message router.  (#2058))
 ) Keeper {
 	// set KeyTable if it has not already been set
 	if !paramSpace.HasKeyTable() {

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

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"strings"
 
-	baseapp "github.com/cosmos/cosmos-sdk/baseapp"
 	"github.com/cosmos/cosmos-sdk/codec"
 	storetypes "github.com/cosmos/cosmos-sdk/store/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -31,14 +30,18 @@ type Keeper struct {
 
 	scopedKeeper capabilitykeeper.ScopedKeeper
 
-	msgRouter *baseapp.MsgServiceRouter
+	msgRouter icatypes.MessageRouter
 }
 
 // NewKeeper creates a new interchain accounts host Keeper instance
 func NewKeeper(
 	cdc codec.BinaryCodec, key storetypes.StoreKey, paramSpace paramtypes.Subspace,
 	channelKeeper icatypes.ChannelKeeper, portKeeper icatypes.PortKeeper,
+<<<<<<< HEAD
 	accountKeeper icatypes.AccountKeeper, scopedKeeper capabilitykeeper.ScopedKeeper, msgRouter *baseapp.MsgServiceRouter,
+=======
+	accountKeeper icatypes.AccountKeeper, scopedKeeper icatypes.ScopedKeeper, msgRouter icatypes.MessageRouter,
+>>>>>>> 397b88c (Added interface to accept any type of ADR 031 message router.  (#2058))
 ) Keeper {
 	// ensure ibc interchain accounts module account is set
 	if addr := accountKeeper.GetModuleAddress(icatypes.ModuleName); addr == nil {

modules/apps/27-interchain-accounts/types/router.go

@@ -0,0 +1,12 @@
+package types
+
+import (
+	baseapp "github.com/cosmos/cosmos-sdk/baseapp"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// MessageRouter ADR 031 request type routing
+// https://github.com/cosmos/cosmos-sdk/blob/main/docs/architecture/adr-031-msg-service.md
+type MessageRouter interface {
+	Handler(msg sdk.Msg) baseapp.MsgServiceHandler
+}