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cli: support 'loadtx' VM CLI command

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This commit is contained in:
Anna Shaleva 2022-10-10 13:59:37 +03:00
parent 44df4b9dbb
commit 9977606e40
2 changed files with 103 additions and 13 deletions
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83
cli/vm/cli.go
View file

@ -20,6 +20,7 @@ import (
"github.com/kballard/go-shellquote"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/options"
"github.com/nspcc-dev/neo-go/cli/paramcontext"
"github.com/nspcc-dev/neo-go/pkg/compiler"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/core"
@ -27,6 +28,7 @@ import (
"github.com/nspcc-dev/neo-go/pkg/core/interop/runtime"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
"github.com/nspcc-dev/neo-go/pkg/core/storage/dbconfig"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
@ -166,6 +168,21 @@ both parameters are mandatory, example:
> loadgo /path/to/file.go`,
Action: handleLoadGo,
},
{
Name: "loadtx",
Usage: "Load transaction into the VM from chain or from parameter context file. " +
"The transaction script will be loaded into VM; the resulting execution context will use the provided transaction as script container including its signers, hash and nonce.",
UsageText: `loadtx [--historic <height>] <file-or-hash>`,
Flags: []cli.Flag{historicFlag},
Description: `loadtx [--historic <height>] <file-or-hash>
Load transaction into the VM from chain or from parameter context file.
The transaction script will be loaded into VM; the resulting execution context will use the provided transaction as script container including its signers, hash and nonce.
<file-or-hash> is mandatory parameter, example:
> loadtx /path/to/file`,
Action: handleLoadTx,
},
{
Name: "reset",
Usage: "Unload compiled script from the VM and reset context to proper (possibly, historic) state",
@ -574,17 +591,17 @@ func handleSlots(c *cli.Context) error {
// prepareVM retrieves --historic flag from context (if set) and resets app state
// (to the specified historic height if given).
func prepareVM(c *cli.Context) error {
func prepareVM(c *cli.Context, tx *transaction.Transaction) error {
if c.IsSet(historicFlagFullName) {
height := c.Int(historicFlagFullName)
return resetState(c.App, uint32(height))
return resetState(c.App, tx, uint32(height))
}
return resetState(c.App)
return resetState(c.App, tx)
}
func handleLoadNEF(c *cli.Context) error {
err := prepareVM(c)
err := prepareVM(c, nil)
if err != nil {
return err
}
@ -607,7 +624,7 @@ func handleLoadNEF(c *cli.Context) error {
}
func handleLoadBase64(c *cli.Context) error {
err := prepareVM(c)
err := prepareVM(c, nil)
if err != nil {
return err
}
@ -627,7 +644,7 @@ func handleLoadBase64(c *cli.Context) error {
}
func handleLoadHex(c *cli.Context) error {
err := prepareVM(c)
err := prepareVM(c, nil)
if err != nil {
return err
}
@ -647,7 +664,7 @@ func handleLoadHex(c *cli.Context) error {
}
func handleLoadGo(c *cli.Context) error {
err := prepareVM(c)
err := prepareVM(c, nil)
if err != nil {
return err
}
@ -676,8 +693,48 @@ func handleLoadGo(c *cli.Context) error {
return nil
}
func handleLoadTx(c *cli.Context) error {
args := c.Args()
if len(args) < 1 {
return fmt.Errorf("%w: <file-or-hash>", ErrMissingParameter)
}
var (
tx *transaction.Transaction
err error
)
h, err := util.Uint256DecodeStringLE(strings.TrimPrefix(args[0], "0x"))
if err != nil {
pc, err := paramcontext.Read(args[0])
if err != nil {
return fmt.Errorf("invalid tx hash or path to parameter context: %w", err)
}
var ok bool
tx, ok = pc.Verifiable.(*transaction.Transaction)
if !ok {
return errors.New("failed to retrieve transaction from parameter context: verifiable item is not a transaction")
}
} else {
bc := getChainFromContext(c.App)
tx, _, err = bc.GetTransaction(h)
if err != nil {
return fmt.Errorf("failed to get transaction from chain: %w", err)
}
}
err = prepareVM(c, tx)
if err != nil {
return err
}
v := getVMFromContext(c.App)
v.LoadWithFlags(tx.Script, callflag.All)
fmt.Fprintf(c.App.Writer, "READY: loaded %d instructions\n", v.Context().LenInstr())
changePrompt(c.App)
return nil
}
func handleReset(c *cli.Context) error {
err := prepareVM(c)
err := prepareVM(c, nil)
if err != nil {
return err
}
@ -693,7 +750,7 @@ func finalizeInteropContext(app *cli.App) {
// resetInteropContext calls finalizer for current interop context and replaces
// it with the newly created one.
func resetInteropContext(app *cli.App, height ...uint32) error {
func resetInteropContext(app *cli.App, tx *transaction.Transaction, height ...uint32) error {
finalizeInteropContext(app)
bc := getChainFromContext(app)
var (
@ -701,12 +758,12 @@ func resetInteropContext(app *cli.App, height ...uint32) error {
err error
)
if len(height) != 0 {
newIc, err = bc.GetTestHistoricVM(trigger.Application, nil, height[0]+1)
newIc, err = bc.GetTestHistoricVM(trigger.Application, tx, height[0]+1)
if err != nil {
return fmt.Errorf("failed to create historic VM for height %d: %w", height[0], err)
}
} else {
newIc, err = bc.GetTestVM(trigger.Application, nil, nil)
newIc, err = bc.GetTestVM(trigger.Application, tx, nil)
if err != nil {
return fmt.Errorf("failed to create VM: %w", err)
}
@ -723,8 +780,8 @@ func resetManifest(app *cli.App) {
// resetState resets state of the app (clear interop context and manifest) so that it's ready
// to load new program.
func resetState(app *cli.App, height ...uint32) error {
err := resetInteropContext(app, height...)
func resetState(app *cli.App, tx *transaction.Transaction, height ...uint32) error {
err := resetInteropContext(app, tx, height...)
if err != nil {
return err
}

33
cli/vm/cli_test.go
View file

@ -5,6 +5,7 @@ import (
"encoding/base64"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
gio "io"
"os"
@ -15,10 +16,12 @@ import (
"time"
"github.com/chzyer/readline"
"github.com/nspcc-dev/neo-go/cli/paramcontext"
"github.com/nspcc-dev/neo-go/internal/basicchain"
"github.com/nspcc-dev/neo-go/internal/random"
"github.com/nspcc-dev/neo-go/pkg/compiler"
"github.com/nspcc-dev/neo-go/pkg/config"
"github.com/nspcc-dev/neo-go/pkg/config/netmode"
"github.com/nspcc-dev/neo-go/pkg/core/interop/interopnames"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/storage"
@ -986,3 +989,33 @@ func TestDumpChanges(t *testing.T) {
e.checkChange(t, expected[1])
e.checkChange(t, expected[2])
}
func TestLoadtx(t *testing.T) {
e := newTestVMClIWithState(t)
b, err := e.cli.chain.GetBlock(e.cli.chain.GetHeaderHash(2)) // Block #2 contains transaction that puts (1,1) pair to storage contract.
require.NoError(t, err)
require.Equal(t, 1, len(b.Transactions))
tx := b.Transactions[0]
tmp := filepath.Join(t.TempDir(), "tx.json")
require.NoError(t, paramcontext.InitAndSave(netmode.UnitTestNet, tx, nil, tmp))
e.runProg(t,
"loadtx "+tx.Hash().StringLE(), // hash LE
"run",
"loadtx 0x"+tx.Hash().StringLE(), // hash LE with 0x prefix
"run",
"loadtx '"+tmp+"'", // Tx from parameter context file.
"run",
"loadtx", // missing argument
"exit",
)
e.checkNextLine(t, "READY: loaded \\d+ instructions")
e.checkStack(t, 1)
e.checkNextLine(t, "READY: loaded \\d+ instructions")
e.checkStack(t, 1)
e.checkNextLine(t, "READY: loaded \\d+ instructions")
e.checkStack(t, 1)
e.checkError(t, errors.New("missing argument: <file-or-hash>"))
}