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rvgo: Witness cmd saves witness & stateHash to json #36

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Apr 10, 2024
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rvgo: Witness cmd saves witness & stateHash to json #36

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22 changes: 14 additions & 8 deletions rvgo/cmd/witness.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@ package cmd

import (
"fmt"
"os"

cannon "github.com/ethereum-optimism/optimism/cannon/cmd"
"github.com/ethereum-optimism/optimism/op-service/jsonutil"
Expand All @@ -11,6 +10,11 @@ import (
"github.com/ethereum-optimism/asterisc/rvgo/fast"
)

type WitnessOutput struct {
Witness []byte `json:"witness"`
StateHash [32]byte `json:"stateHash"`
}

func Witness(ctx *cli.Context) error {
input := ctx.Path(cannon.WitnessInputFlag.Name)
output := ctx.Path(cannon.WitnessOutputFlag.Name)
Expand All @@ -19,23 +23,25 @@ func Witness(ctx *cli.Context) error {
return fmt.Errorf("invalid input state (%v): %w", input, err)
}
witness := state.EncodeWitness()
h, err := witness.StateHash()
stateHash, err := witness.StateHash()
if err != nil {
return fmt.Errorf("failed to compute witness hash: %w", err)
}
if output != "" {
if err := os.WriteFile(output, witness, 0755); err != nil {
return fmt.Errorf("writing output to %v: %w", output, err)
}
witnessOutput := &WitnessOutput{
Witness: witness,
StateHash: stateHash,
}
if err := jsonutil.WriteJSON(output, witnessOutput, OutFilePerm); err != nil {
return fmt.Errorf("failed to write witness output %w", err)
}
fmt.Println(h.Hex())
fmt.Println(stateHash.Hex())
return nil
}

var WitnessCommand = &cli.Command{
Name: "witness",
Usage: "Convert an Asterisc JSON state into a binary witness",
Description: "Convert an Asterisc JSON state into a binary witness. The hash of the witness is written to stdout",
Description: "Convert an Asterisc JSON state into a binary witness. The statehash is written to stdout",
Action: Witness,
Flags: []cli.Flag{
cannon.WitnessInputFlag,
Expand Down