Add My Module

Loc:https://github.com/MrXJC/CosmosSDK-in-Action/tree/master/Example/mymodule/cmd/gaia/app

下面是我具体添加mymodule的代码片段，具体细节见注释。

// Extended ABCI application
type GaiaApp struct {
    *bam.BaseApp
    cdc *wire.Codec

    // keys to access the substores
    ...
    // 1.添加自己的key
    keyMymodule *sdk.KVStoreKey

    // Manage getting and setting accounts
    ...
    // 2.添加自己的keeper
    mymoduleKeeper mymodule.Keeper
}

func NewGaiaApp(logger log.Logger, db dbm.DB) *GaiaApp {
    cdc := MakeCodec()

    // create your application object
    var app = &GaiaApp{
    ...
    // 3.初始化自己的key
        keyMymodule: sdk.NewKVStoreKey("mymodule"),
    }

    // define the accountMapper
    ...

    // add handlers
    ...
    // 4.初始化自己的keeper
    app.mymoduleKeeper = mymodule.NewKeeper(app.cdc, app.keyMymodule, app.coinKeeper,app.RegisterCodespace(mymodule.DefaultCodespace))
    // register message routes
   ...
   // 5.添加自己的module的handler
    app.Router().AddRoute("mymodule",mymodule.NewHandler(app.mymoduleKeeper))

    // initialize BaseApp
    // 6.初始化区块链的时刻调用的handler
    app.SetInitChainer(app.initChainer)
    // 7.设置每次beginblock时刻调用的handler
    app.SetBeginBlocker(gov.NewBeginBlocker(app.govKeeper))
    // 8.设置每次endblock时刻调用的handler
    app.SetEndBlocker(stake.NewEndBlocker(app.stakeKeeper))
    // 9.添加自己的key到StoresIAVLtree中
    app.MountStoresIAVL(app.keyMain, app.keyAccount, app.keyIBC, app.keyStake, app.keyGov,app.keyMymodule)
    // 10.设置每次消息都会调用的handler
    app.SetAnteHandler(auth.NewAnteHandler(app.accountMapper, stake.FeeHandler))
    ...
    return app
}

// custom tx codec
func MakeCodec() *wire.Codec {
    var cdc = wire.NewCodec()
    ...
    // 11.注册自己的Wire
    mymodule.RegisterWire(cdc)
    return cdc
}