Integrating the x/pep Module

In this tutorial, you will learn how to integrate the pep module in your own app chain to enable encrypted transactions. To integrate, you will be modifying your app.go file.

Import pep module by adding the following lines to the import section in app/app.go

pepmodule "github.com/Fairblock/fairyring/x/pep"
pepmodulekeeper "github.com/Fairblock/fairyring/x/pep/keeper"
pepmoduletypes "github.com/Fairblock/fairyring/x/pep/types"

• Add the module to ModuleBasics

ModuleBasics = module.NewBasicManager(
  // ... 
  pepmodule.AppModuleBasic{},
 )

• Update module account permissions

maccPerms = map[string][]string{
    // ...
    pepmoduletypes.ModuleName:  {authtypes.Minter, authtypes.Burner, authtypes.Staking},
 }

• Add keepers to app

type App struct {
 // ...
 ScopedPepKeeper      capabilitykeeper.ScopedKeeper

 PepKeeper     pepmodulekeeper.Keeper
 // ...
 }

• update kv store keys

 keys := sdk.NewKVStoreKeys(
    // ... 
  pepmoduletypes.StoreKey,
 )

• configure keepers and module

 scopedPepKeeper := app.CapabilityKeeper.ScopeToModule(pepmoduletypes.ModuleName)
 app.PepKeeper = *pepmodulekeeper.NewKeeper(
  appCodec,
  keys[pepmoduletypes.StoreKey],
  keys[pepmoduletypes.MemStoreKey],
  app.GetSubspace(pepmoduletypes.ModuleName),
  app.IBCKeeper.ChannelKeeper,
  &app.IBCKeeper.PortKeeper,
  scopedPepKeeper,
  app.IBCKeeper.ConnectionKeeper,
  app.BankKeeper,
 )
 pepModule := pepmodule.NewAppModule(
  appCodec,
  app.PepKeeper,
  app.AccountKeeper,
  app.BankKeeper,
  app.MsgServiceRouter(),
  encodingConfig.TxConfig,
  app.SimCheck,
 )

 pepIBCModule := pepmodule.NewIBCModule(app.PepKeeper)

• Add IBC route

ibcRouter.AddRoute(icahosttypes.SubModuleName, icaHostIBCModule).
  AddRoute(ibctransfertypes.ModuleName, transferIBCModule).
  AddRoute(pepmoduletypes.ModuleName, pepIBCModule)

• Add to module manager

app.mm = module.NewManager(
 // ...  
  pepModule,
 // ... 
)

• Set begin and end blockers

app.mm.SetOrderBeginBlockers(
  // ... 
  pepmoduletypes.ModuleName,
 )

app.mm.SetOrderEndBlockers(
  // ... 
  pepmoduletypes.ModuleName,
 )

• Modify genesis modules

genesisModuleOrder := []string{
  // ...  
  pepmoduletypes.ModuleName,
 }

• Scoped keeper

app.ScopedPepKeeper = scopedPepKeeper

• Init params keeper

func initParamsKeeper(appCodec codec.BinaryCodec, legacyAmino *codec.LegacyAmino, key, tkey storetypes.StoreKey) paramskeeper.Keeper {
 paramsKeeper := paramskeeper.NewKeeper(appCodec, legacyAmino, key, tkey)

 // ... 
 paramsKeeper.Subspace(pepmoduletypes.ModuleName)

 return paramsKeeper
}