feat: Move AppModule.BeginBlock and AppModule.EndBlock to extension interfaces (backport #12603) (#12637)

* feat: Move AppModule.BeginBlock and AppModule.EndBlock to extension interfaces (#12603)

## Description
Most modules right now have a no-op for AppModule.BeginBlock and AppModule.EndBlock. We should move these methods off the AppModule interface so we have less deadcode, and instead move them to extension interfaces.

1. I added `BeginBlockAppModule` and `EndBlockAppModule` interface.
2. Remove the dead-code from modules that do no implement them
3. Add type casting in the the module code to use the new interface

Closes: #12462

---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

(cherry picked from commit b65f3fe)

# Conflicts:
#	CHANGELOG.md
#	x/authz/module/module.go
#	x/params/module.go
#	x/slashing/module.go
#	x/upgrade/module.go

* remove conflicts

* remove conflicts

* update changelog

Co-authored-by: Sishir Giri <[email protected]>
Co-authored-by: marbar3778 <[email protected]>
Co-authored-by: Julien Robert <[email protected]>

Author: 4 people

CHANGELOG.md

@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+* (upgrade) [#12603](https://github.com/cosmos/cosmos-sdk/pull/12603) feat: Move AppModule.BeginBlock and AppModule.EndBlock to extension interfaces
+
+### Features
+
 ## [v0.46.0-rc3](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.46.0-rc3) - 2022-07-18
 
 ### Features

types/module/module.go

@@ -169,9 +169,17 @@ type AppModule interface {
 	// introduced by the module. To avoid wrong/empty versions, the initial version
 	// should be set to 1.
 	ConsensusVersion() uint64
+}
 
-	// ABCI
+// BeginBlockAppModule is an extension interface that contains information about the AppModule and BeginBlock.
+type BeginBlockAppModule interface {
+	AppModule
 	BeginBlock(sdk.Context, abci.RequestBeginBlock)
+}
+
+// EndBlockAppModule is an extension interface that contains information about the AppModule and EndBlock.
+type EndBlockAppModule interface {
+	AppModule
 	EndBlock(sdk.Context, abci.RequestEndBlock) []abci.ValidatorUpdate
 }
 
@@ -468,7 +476,10 @@ func (m *Manager) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) abci.R
 	ctx = ctx.WithEventManager(sdk.NewEventManager())
 
 	for _, moduleName := range m.OrderBeginBlockers {
-		m.Modules[moduleName].BeginBlock(ctx, req)
+		module, ok := m.Modules[moduleName].(BeginBlockAppModule)
+		if ok {
+			module.BeginBlock(ctx, req)
+		}
 	}
 
 	return abci.ResponseBeginBlock{
@@ -484,7 +495,11 @@ func (m *Manager) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) abci.Respo
 	validatorUpdates := []abci.ValidatorUpdate{}
 
 	for _, moduleName := range m.OrderEndBlockers {
-		moduleValUpdates := m.Modules[moduleName].EndBlock(ctx, req)
+		module, ok := m.Modules[moduleName].(EndBlockAppModule)
+		if !ok {
+			continue
+		}
+		moduleValUpdates := module.EndBlock(ctx, req)
 
 		// use these validator updates if provided, the module manager assumes
 		// only one module will update the validator set

types/module/module_test.go

@@ -79,8 +79,6 @@ func TestGenesisOnlyAppModule(t *testing.T) {
 
 	// no-op
 	goam.RegisterInvariants(mockInvariantRegistry)
-	goam.BeginBlock(sdk.Context{}, abci.RequestBeginBlock{})
-	require.Equal(t, []abci.ValidatorUpdate{}, goam.EndBlock(sdk.Context{}, abci.RequestEndBlock{}))
 }
 
 func TestManagerOrderSetters(t *testing.T) {

x/auth/module.go

@@ -155,15 +155,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 3 }
 
-// BeginBlock returns the begin blocker for the auth module.
-func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
-// EndBlock returns the end blocker for the auth module. It returns no validator
-// updates.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the auth module

x/auth/vesting/module.go

@@ -111,14 +111,6 @@ func (am AppModule) InitGenesis(_ sdk.Context, _ codec.JSONCodec, _ json.RawMess
 	return []abci.ValidatorUpdate{}
 }
 
-// BeginBlock performs a no-op.
-func (am AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
-// EndBlock performs a no-op.
-func (am AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // ExportGenesis is always empty, as InitGenesis does nothing either.
 func (am AppModule) ExportGenesis(_ sdk.Context, cdc codec.JSONCodec) json.RawMessage {
 	return am.DefaultGenesis(cdc)

x/authz/module/module.go

@@ -162,11 +162,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 	BeginBlocker(ctx, am.keeper)
 }
 
-// EndBlock does nothing
-func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // ____________________________________________________________________________
 
 // AppModuleSimulation functions

x/bank/module.go

@@ -160,15 +160,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 3 }
 
-// BeginBlock performs a no-op.
-func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
-// EndBlock returns the end blocker for the bank module. It returns no validator
-// updates.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the bank module.

x/capability/module.go

@@ -148,12 +148,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {
 	am.keeper.InitMemStore(ctx)
 }
 
-// EndBlock executes all ABCI EndBlock logic respective to the capability module. It
-// returns no validator updates.
-func (am AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // GenerateGenesisState creates a randomized GenState of the capability module.
 func (AppModule) GenerateGenesisState(simState *module.SimulationState) {
 	simulation.RandomizedGenState(simState)

x/crisis/module.go

@@ -155,9 +155,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 1 }
 
-// BeginBlock performs a no-op.
-func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
 // EndBlock returns the end blocker for the crisis module. It returns no validator
 // updates.
 func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {

x/distribution/module.go

@@ -163,12 +163,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 	BeginBlocker(ctx, req, am.keeper)
 }
 
-// EndBlock returns the end blocker for the distribution module. It returns no validator
-// updates.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the distribution module.

x/evidence/module.go

@@ -170,12 +170,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 	BeginBlocker(ctx, req, am.keeper)
 }
 
-// EndBlock executes all ABCI EndBlock logic respective to the evidence module. It
-// returns no validator updates.
-func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the evidence module.

x/feegrant/module/module.go

@@ -176,9 +176,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 2 }
 
-// BeginBlock returns the begin blocker for the feegrant module.
-func (am AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
 // EndBlock returns the end blocker for the feegrant module. It returns no validator
 // updates.
 func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {

x/gov/module.go

@@ -193,9 +193,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 3 }
 
-// BeginBlock performs a no-op.
-func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
 // EndBlock returns the end blocker for the gov module. It returns no validator
 // updates.
 func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {

x/group/module/module.go

@@ -147,8 +147,6 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 1 }
 
-func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {}
-
 // EndBlock implements the group module's EndBlock.
 func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
 	EndBlocker(ctx, am.keeper)

x/mint/module.go

@@ -155,12 +155,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {
 	BeginBlocker(ctx, am.keeper, am.inflationCalculator)
 }
 
-// EndBlock returns the end blocker for the mint module. It returns no validator
-// updates.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the mint module.

x/nft/module/module.go

@@ -152,13 +152,6 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 1 }
 
-func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {}
-
-// EndBlock does nothing
-func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // ____________________________________________________________________________
 
 // AppModuleSimulation functions

x/params/module.go

@@ -139,11 +139,3 @@ func (am AppModule) ExportGenesis(_ sdk.Context, _ codec.JSONCodec) json.RawMess
 
 // ConsensusVersion implements AppModule/ConsensusVersion.
 func (AppModule) ConsensusVersion() uint64 { return 1 }
-
-// BeginBlock performs a no-op.
-func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock) {}
-
-// EndBlock performs a no-op.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}

x/slashing/module.go

@@ -160,12 +160,6 @@ func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 	BeginBlocker(ctx, req, am.keeper)
 }
 
-// EndBlock returns the end blocker for the slashing module. It returns no validator
-// updates.
-func (AppModule) EndBlock(_ sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}
-
 // AppModuleSimulation functions
 
 // GenerateGenesisState creates a randomized GenState of the slashing module.

x/upgrade/abci_test.go

@@ -24,7 +24,7 @@ import (
 )
 
 type TestSuite struct {
-	module  module.AppModule
+	module  module.BeginBlockAppModule
 	keeper  keeper.Keeper
 	querier sdk.Querier
 	handler govtypes.Handler

x/upgrade/module.go

@@ -133,8 +133,3 @@ func (AppModule) ConsensusVersion() uint64 { return consensusVersion }
 func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
 	BeginBlocker(am.keeper, ctx, req)
 }
-
-// EndBlock does nothing
-func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
-	return []abci.ValidatorUpdate{}
-}