85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
package server
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import (
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"encoding/json"
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"io"
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"os"
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"path/filepath"
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abci "github.com/tendermint/tendermint/abci/types"
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dbm "github.com/tendermint/tendermint/libs/db"
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"github.com/tendermint/tendermint/libs/log"
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tmtypes "github.com/tendermint/tendermint/types"
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)
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type (
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// AppCreator reflects a function that allows us to lazily initialize an
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// application using various configurations.
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AppCreator func(home string, logger log.Logger, traceStore string) (abci.Application, error)
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// AppExporter reflects a function that dumps all app state to
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// JSON-serializable structure and returns the current validator set.
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AppExporter func(home string, logger log.Logger, traceStore string) (json.RawMessage, []tmtypes.GenesisValidator, error)
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// AppCreatorInit reflects a function that performs initialization of an
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// AppCreator.
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AppCreatorInit func(log.Logger, dbm.DB, io.Writer) abci.Application
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// AppExporterInit reflects a function that performs initialization of an
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// AppExporter.
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AppExporterInit func(log.Logger, dbm.DB, io.Writer) (json.RawMessage, []tmtypes.GenesisValidator, error)
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)
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// ConstructAppCreator returns an application generation function.
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func ConstructAppCreator(appFn AppCreatorInit, name string) AppCreator {
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return func(rootDir string, logger log.Logger, traceStore string) (abci.Application, error) {
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dataDir := filepath.Join(rootDir, "data")
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db, err := dbm.NewGoLevelDB(name, dataDir)
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if err != nil {
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return nil, err
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}
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var traceStoreWriter io.Writer
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if traceStore != "" {
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traceStoreWriter, err = os.OpenFile(
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traceStore,
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os.O_WRONLY|os.O_APPEND|os.O_CREATE,
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0666,
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)
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if err != nil {
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return nil, err
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}
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}
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app := appFn(logger, db, traceStoreWriter)
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return app, nil
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}
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}
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// ConstructAppExporter returns an application export function.
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func ConstructAppExporter(appFn AppExporterInit, name string) AppExporter {
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return func(rootDir string, logger log.Logger, traceStore string) (json.RawMessage, []tmtypes.GenesisValidator, error) {
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dataDir := filepath.Join(rootDir, "data")
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db, err := dbm.NewGoLevelDB(name, dataDir)
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if err != nil {
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return nil, nil, err
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}
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var traceStoreWriter io.Writer
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if traceStore != "" {
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traceStoreWriter, err = os.OpenFile(
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traceStore,
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os.O_WRONLY|os.O_APPEND|os.O_CREATE,
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0666,
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)
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if err != nil {
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return nil, nil, err
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}
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}
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return appFn(logger, db, traceStoreWriter)
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}
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}
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