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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package evm_exporter | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
|
|
||
| "github.com/rs/zerolog/log" | ||
| "github.com/spf13/cobra" | ||
|
|
||
| "github.com/onflow/flow-go/cmd/util/ledger/util" | ||
| "github.com/onflow/flow-go/fvm/evm" | ||
| "github.com/onflow/flow-go/fvm/evm/emulator/state" | ||
| "github.com/onflow/flow-go/ledger" | ||
| "github.com/onflow/flow-go/ledger/common/convert" | ||
| "github.com/onflow/flow-go/model/flow" | ||
| ) | ||
|
|
||
| var ( | ||
| flagChain string | ||
| flagExecutionStateDir string | ||
| flagOutputDir string | ||
| flagStateCommitment string | ||
| ) | ||
|
|
||
| var Cmd = &cobra.Command{ | ||
| Use: "export-evm-state", | ||
| Short: "exports evm state into a several binary files", | ||
| Run: run, | ||
| } | ||
|
|
||
| func init() { | ||
| Cmd.Flags().StringVar(&flagChain, "chain", "", "Chain name") | ||
| _ = Cmd.MarkFlagRequired("chain") | ||
|
|
||
| Cmd.Flags().StringVar(&flagExecutionStateDir, "execution-state-dir", "", | ||
| "Execution Node state dir (where WAL logs are written") | ||
| _ = Cmd.MarkFlagRequired("execution-state-dir") | ||
|
|
||
| Cmd.Flags().StringVar(&flagOutputDir, "output-dir", "", | ||
| "Directory to write new Execution State to") | ||
| _ = Cmd.MarkFlagRequired("output-dir") | ||
|
|
||
| Cmd.Flags().StringVar(&flagStateCommitment, "state-commitment", "", | ||
| "State commitment (hex-encoded, 64 characters)") | ||
| } | ||
|
|
||
| func run(*cobra.Command, []string) { | ||
| log.Info().Msg("start exporting evm state") | ||
| err := ExportEVMState(flagChain, flagExecutionStateDir, flagStateCommitment, flagOutputDir) | ||
| if err != nil { | ||
| log.Fatal().Err(err).Msg("cannot get export evm state") | ||
| } | ||
| } | ||
|
|
||
| // ExportEVMState evm state | ||
| func ExportEVMState( | ||
| chainName string, | ||
| ledgerPath string, | ||
| targetState string, | ||
| outputPath string) error { | ||
|
|
||
| chainID := flow.ChainID(chainName) | ||
|
|
||
| storageRoot := evm.StorageAccountAddress(chainID) | ||
| rootOwner := string(storageRoot.Bytes()) | ||
|
|
||
| payloads, err := util.ReadTrie(ledgerPath, util.ParseStateCommitment(targetState)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // filter payloads of evm storage | ||
| filteredPayloads := make(map[flow.RegisterID]*ledger.Payload, 0) | ||
| for _, payload := range payloads { | ||
| registerID, _, err := convert.PayloadToRegister(payload) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to convert payload to register: %w", err) | ||
| } | ||
| if registerID.Owner == rootOwner { | ||
| filteredPayloads[registerID] = payload | ||
| } | ||
| } | ||
|
|
||
| payloadsLedger := util.NewPayloadsLedger(filteredPayloads) | ||
|
|
||
| exporter, err := state.NewExporter(payloadsLedger, storageRoot) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to create exporter: %w", err) | ||
| } | ||
|
|
||
| if _, err := os.Stat(outputPath); os.IsNotExist(err) { | ||
| err := os.Mkdir(outputPath, os.ModePerm) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to create path: %w", err) | ||
| } | ||
| } | ||
|
|
||
| fi, err := os.Create(outputPath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer fi.Close() | ||
|
|
||
| err = exporter.Export(outputPath) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to export: %w", err) | ||
| } | ||
| return nil | ||
| } |
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