lotus/tvx/exec_lotus.go

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package main
import (
"bytes"
"compress/gzip"
"context"
"encoding/json"
"fmt"
"io"
"os"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/lotus/chain/vm"
"github.com/filecoin-project/lotus/lib/blockstore"
"github.com/ipld/go-car"
"github.com/urfave/cli/v2"
"github.com/filecoin-project/oni/tvx/lotus"
"github.com/filecoin-project/oni/tvx/schema"
)
var execLotusFlags struct {
file string
}
var execLotusCmd = &cli.Command{
Name: "exec-lotus",
Description: "execute a test vector against Lotus",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "file",
Usage: "input file",
Destination: &execLotusFlags.file,
},
},
Action: runExecLotus,
}
func runExecLotus(_ *cli.Context) error {
switch {
case execLotusFlags.file != "":
file, err := os.Open(execLotusFlags.file)
if err != nil {
return fmt.Errorf("failed to open test vector: %w", err)
}
var (
dec = json.NewDecoder(file)
tv schema.TestVector
)
if err = dec.Decode(&tv); err != nil {
return fmt.Errorf("failed to decode test vector: %w", err)
}
return executeTestVector(tv)
default:
dec := json.NewDecoder(os.Stdin)
for {
var tv schema.TestVector
err := dec.Decode(&tv)
if err == io.EOF {
return nil
}
if err != nil {
return err
}
err = executeTestVector(tv)
if err != nil {
return err
}
}
}
}
func executeTestVector(tv schema.TestVector) error {
fmt.Println("executing test vector:", tv.Meta.Desc)
switch tv.Class {
case "message":
var (
ctx = context.Background()
epoch = tv.Pre.Epoch
root = tv.Pre.StateTree.RootCID
)
bs := blockstore.NewTemporary()
buf := bytes.NewReader(tv.CAR)
gr, err := gzip.NewReader(buf)
if err != nil {
return err
}
defer gr.Close()
header, err := car.LoadCar(bs, gr)
if err != nil {
return fmt.Errorf("failed to load state tree car from test vector: %w", err)
}
fmt.Println("roots: ", header.Roots)
driver := lotus.NewDriver(ctx)
for i, m := range tv.ApplyMessages {
fmt.Printf("decoding message %v\n", i)
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msg, err := types.DecodeMessage(m.Bytes)
if err != nil {
return err
}
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// add an epoch if we have set one
if m.Epoch != nil {
epoch = *m.Epoch
}
fmt.Printf("executing message %v\n", i)
var ret *vm.ApplyRet
ret, root, err = driver.ExecuteMessage(msg, root, bs, epoch)
if err != nil {
return err
}
if expected, actual := tv.Post.Receipts[i].ExitCode, ret.ExitCode; expected != actual {
return fmt.Errorf("exit code of msg %d did not match; expected: %s, got: %s", i, expected, actual)
}
if expected, actual := tv.Post.Receipts[i].GasUsed, ret.GasUsed; expected != actual {
return fmt.Errorf("gas used of msg %d did not match; expected: %d, got: %d", i, expected, actual)
}
// TODO assert return value
fmt.Printf("✅ message %d passed expectations\n", i)
}
if root != tv.Post.StateTree.RootCID {
return fmt.Errorf("wrong post root cid; expected %v , but got %v", tv.Post.StateTree.RootCID, root)
}
return nil
default:
return fmt.Errorf("test vector class not supported")
}
}