1.3 KiB
1.3 KiB
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Modifying the DefaultGenesis
It is possible to modify the DefaultGenesis parameters for modules by wrapping the module, providing it to the *module.Manager and injecting it with depinject.
Example ( staking ) :
type CustomStakingModule struct {
staking.AppModule
cdc codec.Codec
}
// DefaultGenesis will override the Staking module DefaultGenesis AppModuleBasic method.
func (cm CustomStakingModule) DefaultGenesis() json.RawMessage {
params := stakingtypes.DefaultParams()
params.BondDenom = "mydenom"
return cm.cdc.MustMarshalJSON(&stakingtypes.GenesisState{
Params: params,
})
}
// option 1 ( for depinject users ): override previous module manager
depinject.Inject(
// ... provider/invoker/supplier
&moduleManager,
)
oldStakingModule,_ := moduleManager.Modules()[stakingtypes.ModuleName].(staking.AppModule)
moduleManager.Modules()[stakingtypes.ModuleName] = CustomStakingModule{
AppModule: oldStakingModule,
cdc: appCodec,
}
// option 2 ( for non depinject users ): use new module manager
moduleManager := module.NewManagerFromMap(map[string]appmodule.AppModule{
stakingtypes.ModuleName: CustomStakingModule{cdc: appCodec, AppModule: staking.NewAppModule(...)},
// other modules ...
})
// set the module manager
app.ModuleManager = moduleManager