app_creator.go

package cmd

import (
	"errors"
	"fmt"
	"io"
	"path/filepath"

	"github.com/cosmos/cosmos-sdk/baseapp"
	"github.com/cosmos/cosmos-sdk/client/flags"
	"github.com/cosmos/cosmos-sdk/server"
	servertypes "github.com/cosmos/cosmos-sdk/server/types"
	"github.com/cosmos/cosmos-sdk/snapshots"
	"github.com/cosmos/cosmos-sdk/store"
	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/spf13/cast"
	"github.com/tendermint/tendermint/libs/log"
	dbm "github.com/tendermint/tm-db"
	"github.com/cicizeo/hilo/app"
	"github.com/cicizeo/hilo/app/params"
)

type appCreator struct {
	encCfg params.EncodingConfig
}

func (ac appCreator) newApp(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	appOpts servertypes.AppOptions,
) servertypes.Application {

	var cache sdk.MultiStorePersistentCache

	if cast.ToBool(appOpts.Get(server.FlagInterBlockCache)) {
		cache = store.NewCommitKVStoreCacheManager()
	}

	skipUpgradeHeights := make(map[int64]bool)
	for _, h := range cast.ToIntSlice(appOpts.Get(server.FlagUnsafeSkipUpgrades)) {
		skipUpgradeHeights[int64(h)] = true
	}

	pruningOpts, err := server.GetPruningOptionsFromFlags(appOpts)
	if err != nil {
		panic(fmt.Sprintf("failed to parse pruning options from flags: %s", err))
	}

	snapshotDir := filepath.Join(cast.ToString(appOpts.Get(flags.FlagHome)), "data", "snapshots")
	snapshotDB, err := sdk.NewLevelDB("metadata", snapshotDir)
	if err != nil {
		panic(fmt.Sprintf("failed to create LevelDB database: %s", err))
	}

	snapshotStore, err := snapshots.NewStore(snapshotDB, snapshotDir)
	if err != nil {
		panic(fmt.Sprintf("failed to create snapshot store: %s", err))
	}

	return app.New(
		logger,
		db,
		traceStore,
		true,
		skipUpgradeHeights,
		cast.ToString(appOpts.Get(flags.FlagHome)),
		cast.ToUint(appOpts.Get(server.FlagInvCheckPeriod)),
		ac.encCfg,
		appOpts,
		baseapp.SetPruning(pruningOpts),
		baseapp.SetMinGasPrices(cast.ToString(appOpts.Get(server.FlagMinGasPrices))),
		baseapp.SetMinRetainBlocks(cast.ToUint64(appOpts.Get(server.FlagMinRetainBlocks))),
		baseapp.SetHaltHeight(cast.ToUint64(appOpts.Get(server.FlagHaltHeight))),
		baseapp.SetHaltTime(cast.ToUint64(appOpts.Get(server.FlagHaltTime))),
		baseapp.SetInterBlockCache(cache),
		baseapp.SetTrace(cast.ToBool(appOpts.Get(server.FlagTrace))),
		baseapp.SetIndexEvents(cast.ToStringSlice(appOpts.Get(server.FlagIndexEvents))),
		baseapp.SetSnapshotStore(snapshotStore),
		baseapp.SetSnapshotInterval(cast.ToUint64(appOpts.Get(server.FlagStateSyncSnapshotInterval))),
		baseapp.SetSnapshotKeepRecent(cast.ToUint32(appOpts.Get(server.FlagStateSyncSnapshotKeepRecent))),
	)
}

// appExport creates a new simapp, optionally at a given height.
func (ac appCreator) appExport(
	logger log.Logger,
	db dbm.DB,
	traceStore io.Writer,
	height int64,
	forZeroHeight bool,
	jailAllowedAddrs []string,
	appOpts servertypes.AppOptions,
) (servertypes.ExportedApp, error) {

	homePath, ok := appOpts.Get(flags.FlagHome).(string)
	if !ok || homePath == "" {
		return servertypes.ExportedApp{}, errors.New("application home is not set")
	}

	var loadLatest bool
	if height == -1 {
		loadLatest = true
	}

	hiloApp := app.New(
		logger,
		db,
		traceStore,
		loadLatest,
		map[int64]bool{},
		homePath,
		uint(1),
		ac.encCfg,
		appOpts,
	)

	if height != -1 {
		if err := hiloApp.LoadHeight(height); err != nil {
			return servertypes.ExportedApp{}, err
		}
	}

	return hiloApp.ExportAppStateAndValidators(forZeroHeight, jailAllowedAddrs)
}