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constructors.go
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/
constructors.go
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package server
import (
"encoding/json"
"io"
"os"
"path/filepath"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
tmtypes "github.com/tendermint/tendermint/types"
dbm "github.com/tendermint/tm-db"
sdk "github.com/hbtc-chain/bhchain/types"
)
type (
// AppCreator is a function that allows us to lazily initialize an
// application using various configurations.
AppCreator func(log.Logger, dbm.DB, io.Writer) abci.Application
// AppExporter is a function that dumps all app state to
// JSON-serializable structure and returns the current validator set.
AppExporter func(log.Logger, dbm.DB, io.Writer, int64, bool, []string) (json.RawMessage, []tmtypes.GenesisValidator, error)
)
func openDB(rootDir string) (dbm.DB, error) {
dataDir := filepath.Join(rootDir, "data")
db, err := sdk.NewLevelDB("application", dataDir)
return db, err
}
func openTraceWriter(traceWriterFile string) (w io.Writer, err error) {
if traceWriterFile != "" {
w, err = os.OpenFile(
traceWriterFile,
os.O_WRONLY|os.O_APPEND|os.O_CREATE,
0666,
)
return
}
return
}