0g-chain/internal/app/app.go
2018-09-19 15:46:59 -04:00

215 lines
6.6 KiB
Go

// Copyright 2016 All in Bits, inc
// Modifications copyright 2018 Kava Labs
package app
import (
"encoding/json"
"io"
"os"
abci "github.com/tendermint/tendermint/abci/types"
cmn "github.com/tendermint/tendermint/libs/common"
dbm "github.com/tendermint/tendermint/libs/db"
"github.com/tendermint/tendermint/libs/log"
tmtypes "github.com/tendermint/tendermint/types"
bam "github.com/cosmos/cosmos-sdk/baseapp"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/wire"
"github.com/cosmos/cosmos-sdk/x/auth"
"github.com/cosmos/cosmos-sdk/x/bank"
"github.com/cosmos/cosmos-sdk/x/params"
"github.com/cosmos/cosmos-sdk/x/slashing"
"github.com/cosmos/cosmos-sdk/x/stake"
"github.com/kava-labs/kava/internal/x/paychan"
)
const (
appName = "KavaApp"
)
// Set default directories for data
var (
DefaultCLIHome = os.ExpandEnv("$HOME/.kvcli")
DefaultNodeHome = os.ExpandEnv("$HOME/.kvd")
)
type KavaApp struct {
*bam.BaseApp
cdc *wire.Codec
// keys to access the substores
keyMain *sdk.KVStoreKey
keyAccount *sdk.KVStoreKey
keyStake *sdk.KVStoreKey
keySlashing *sdk.KVStoreKey
keyFeeCollection *sdk.KVStoreKey
keyParams *sdk.KVStoreKey
tkeyParams *sdk.TransientStoreKey
keyPaychan *sdk.KVStoreKey
// keepers
accountMapper auth.AccountMapper
feeCollectionKeeper auth.FeeCollectionKeeper
coinKeeper bank.Keeper
stakeKeeper stake.Keeper
slashingKeeper slashing.Keeper
paramsKeeper params.Keeper
paychanKeeper paychan.Keeper
}
// Creates a new KavaApp.
func NewKavaApp(logger log.Logger, db dbm.DB, traceStore io.Writer, baseAppOptions ...func(*bam.BaseApp)) *KavaApp {
// Create a codec for use across the whole app
cdc := CreateKavaAppCodec()
// Create a new base app
bApp := bam.NewBaseApp(appName, logger, db, auth.DefaultTxDecoder(cdc), baseAppOptions...)
bApp.SetCommitMultiStoreTracer(traceStore)
// Create the kava app, extending baseApp
var app = &KavaApp{
BaseApp: bApp,
cdc: cdc,
keyMain: sdk.NewKVStoreKey("main"),
keyAccount: sdk.NewKVStoreKey("acc"),
keyStake: sdk.NewKVStoreKey("stake"),
keySlashing: sdk.NewKVStoreKey("slashing"),
keyFeeCollection: sdk.NewKVStoreKey("fee"),
keyParams: sdk.NewKVStoreKey("params"),
tkeyParams: sdk.NewTransientStoreKey("transient_params"),
keyPaychan: sdk.NewKVStoreKey("paychan"),
}
// Define the accountMapper and base account
app.accountMapper = auth.NewAccountMapper(
app.cdc,
app.keyAccount,
auth.ProtoBaseAccount,
)
// Create the keepers
app.coinKeeper = bank.NewKeeper(app.accountMapper)
app.paramsKeeper = params.NewKeeper(app.cdc, app.keyParams)
app.stakeKeeper = stake.NewKeeper(app.cdc, app.keyStake, app.coinKeeper, app.RegisterCodespace(stake.DefaultCodespace))
app.feeCollectionKeeper = auth.NewFeeCollectionKeeper(app.cdc, app.keyFeeCollection)
app.slashingKeeper = slashing.NewKeeper(app.cdc, app.keySlashing, app.stakeKeeper, app.paramsKeeper.Getter(), app.RegisterCodespace(slashing.DefaultCodespace))
app.paychanKeeper = paychan.NewKeeper(app.cdc, app.keyPaychan, app.coinKeeper)
// Register the message handlers
app.Router().
AddRoute("bank", bank.NewHandler(app.coinKeeper)).
AddRoute("stake", stake.NewHandler(app.stakeKeeper)).
AddRoute("slashing", slashing.NewHandler(app.slashingKeeper)).
AddRoute("paychan", paychan.NewHandler(app.paychanKeeper))
// Set func to initialize the chain from appState in genesis file
app.SetInitChainer(app.initChainer)
// Set functions that run before and after txs / blocks
app.SetBeginBlocker(app.BeginBlocker)
app.SetEndBlocker(app.EndBlocker)
app.SetAnteHandler(auth.NewAnteHandler(app.accountMapper, app.feeCollectionKeeper))
// Mount stores
app.MountStoresIAVL(app.keyMain, app.keyAccount, app.keyStake, app.keySlashing, app.keyFeeCollection, app.keyParams, app.keyPaychan)
app.MountStore(app.tkeyParams, sdk.StoreTypeTransient)
err := app.LoadLatestVersion(app.keyMain)
if err != nil {
cmn.Exit(err.Error())
}
return app
}
// Creates a codec for use across the whole app.
func CreateKavaAppCodec() *wire.Codec {
cdc := wire.NewCodec()
paychan.RegisterWire(cdc)
bank.RegisterWire(cdc)
stake.RegisterWire(cdc)
slashing.RegisterWire(cdc)
auth.RegisterWire(cdc)
sdk.RegisterWire(cdc)
wire.RegisterCrypto(cdc)
return cdc
}
// The function baseapp runs on receipt of a BeginBlock ABCI message
func (app *KavaApp) BeginBlocker(ctx sdk.Context, req abci.RequestBeginBlock) abci.ResponseBeginBlock {
tags := slashing.BeginBlocker(ctx, req, app.slashingKeeper)
return abci.ResponseBeginBlock{
Tags: tags.ToKVPairs(),
}
}
// The function baseapp runs on receipt of a EndBlock ABCI message
func (app *KavaApp) EndBlocker(ctx sdk.Context, req abci.RequestEndBlock) abci.ResponseEndBlock {
tags := paychan.EndBlocker(ctx, app.paychanKeeper)
validatorUpdates := stake.EndBlocker(ctx, app.stakeKeeper)
app.slashingKeeper.AddValidators(ctx, validatorUpdates)
return abci.ResponseEndBlock{
ValidatorUpdates: validatorUpdates,
Tags: tags,
}
}
// Initializes the app db from the appState in the genesis file. Baseapp runs this on receipt of an InitChain ABCI message
func (app *KavaApp) initChainer(ctx sdk.Context, req abci.RequestInitChain) abci.ResponseInitChain {
stateJSON := req.AppStateBytes
var genesisState GenesisState
err := app.cdc.UnmarshalJSON(stateJSON, &genesisState)
if err != nil {
panic(err)
}
// load the accounts
for _, gacc := range genesisState.Accounts {
acc := gacc.ToAccount()
acc.AccountNumber = app.accountMapper.GetNextAccountNumber(ctx)
app.accountMapper.SetAccount(ctx, acc)
}
// load the initial stake information
validators, err := stake.InitGenesis(ctx, app.stakeKeeper, genesisState.StakeData)
if err != nil {
panic(err)
}
slashing.InitGenesis(ctx, app.slashingKeeper, genesisState.StakeData)
return abci.ResponseInitChain{
Validators: validators,
}
}
//
func (app *KavaApp) ExportAppStateAndValidators() (appState json.RawMessage, validators []tmtypes.GenesisValidator, err error) {
ctx := app.NewContext(true, abci.Header{})
// iterate to get the accounts
accounts := []GenesisAccount{}
appendAccount := func(acc auth.Account) (stop bool) {
account := NewGenesisAccountI(acc)
accounts = append(accounts, account)
return false
}
app.accountMapper.IterateAccounts(ctx, appendAccount)
genState := GenesisState{
Accounts: accounts,
StakeData: stake.WriteGenesis(ctx, app.stakeKeeper),
}
appState, err = wire.MarshalJSONIndent(app.cdc, genState)
if err != nil {
return nil, nil, err
}
validators = stake.WriteValidators(ctx, app.stakeKeeper)
return appState, validators, nil
}