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wallet.go
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wallet.go
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// Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package c
import (
"context"
"math/big"
"time"
"github.com/ava-labs/coreth/ethclient"
"github.com/ava-labs/coreth/plugin/evm"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/utils/rpc"
"github.com/ava-labs/avalanchego/vms/secp256k1fx"
"github.com/ava-labs/avalanchego/wallet/subnet/primary/common"
ethcommon "github.com/ethereum/go-ethereum/common"
)
var _ Wallet = (*wallet)(nil)
type Wallet interface {
// Builder returns the builder that will be used to create the transactions.
Builder() Builder
// Signer returns the signer that will be used to sign the transactions.
Signer() Signer
// IssueImportTx creates, signs, and issues an import transaction that
// attempts to consume all the available UTXOs and import the funds to [to].
//
// - [chainID] specifies the chain to be importing funds from.
// - [to] specifies where to send the imported funds to.
IssueImportTx(
chainID ids.ID,
to ethcommon.Address,
options ...common.Option,
) (*evm.Tx, error)
// IssueExportTx creates, signs, and issues an export transaction that
// attempts to send all the provided [outputs] to the requested [chainID].
//
// - [chainID] specifies the chain to be exporting the funds to.
// - [outputs] specifies the outputs to send to the [chainID].
IssueExportTx(
chainID ids.ID,
outputs []*secp256k1fx.TransferOutput,
options ...common.Option,
) (*evm.Tx, error)
// IssueUnsignedTx signs and issues the unsigned tx.
IssueUnsignedAtomicTx(
utx evm.UnsignedAtomicTx,
options ...common.Option,
) (*evm.Tx, error)
// IssueAtomicTx issues the signed tx.
IssueAtomicTx(
tx *evm.Tx,
options ...common.Option,
) error
}
func NewWallet(
builder Builder,
signer Signer,
avaxClient evm.Client,
ethClient ethclient.Client,
backend Backend,
) Wallet {
return &wallet{
Backend: backend,
builder: builder,
signer: signer,
avaxClient: avaxClient,
ethClient: ethClient,
}
}
type wallet struct {
Backend
builder Builder
signer Signer
avaxClient evm.Client
ethClient ethclient.Client
}
func (w *wallet) Builder() Builder {
return w.builder
}
func (w *wallet) Signer() Signer {
return w.signer
}
func (w *wallet) IssueImportTx(
chainID ids.ID,
to ethcommon.Address,
options ...common.Option,
) (*evm.Tx, error) {
baseFee, err := w.baseFee(options)
if err != nil {
return nil, err
}
utx, err := w.builder.NewImportTx(chainID, to, baseFee, options...)
if err != nil {
return nil, err
}
return w.IssueUnsignedAtomicTx(utx, options...)
}
func (w *wallet) IssueExportTx(
chainID ids.ID,
outputs []*secp256k1fx.TransferOutput,
options ...common.Option,
) (*evm.Tx, error) {
baseFee, err := w.baseFee(options)
if err != nil {
return nil, err
}
utx, err := w.builder.NewExportTx(chainID, outputs, baseFee, options...)
if err != nil {
return nil, err
}
return w.IssueUnsignedAtomicTx(utx, options...)
}
func (w *wallet) IssueUnsignedAtomicTx(
utx evm.UnsignedAtomicTx,
options ...common.Option,
) (*evm.Tx, error) {
ops := common.NewOptions(options)
ctx := ops.Context()
tx, err := SignUnsignedAtomic(ctx, w.signer, utx)
if err != nil {
return nil, err
}
return tx, w.IssueAtomicTx(tx, options...)
}
func (w *wallet) IssueAtomicTx(
tx *evm.Tx,
options ...common.Option,
) error {
ops := common.NewOptions(options)
ctx := ops.Context()
txID, err := w.avaxClient.IssueTx(ctx, tx.SignedBytes())
if err != nil {
return err
}
if f := ops.PostIssuanceFunc(); f != nil {
f(txID)
}
if ops.AssumeDecided() {
return w.Backend.AcceptAtomicTx(ctx, tx)
}
if err := awaitTxAccepted(w.avaxClient, ctx, txID, ops.PollFrequency()); err != nil {
return err
}
return w.Backend.AcceptAtomicTx(ctx, tx)
}
func (w *wallet) baseFee(options []common.Option) (*big.Int, error) {
ops := common.NewOptions(options)
baseFee := ops.BaseFee(nil)
if baseFee != nil {
return baseFee, nil
}
ctx := ops.Context()
return w.ethClient.EstimateBaseFee(ctx)
}
// TODO: Upstream this function into coreth.
func awaitTxAccepted(
c evm.Client,
ctx context.Context,
txID ids.ID,
freq time.Duration,
options ...rpc.Option,
) error {
ticker := time.NewTicker(freq)
defer ticker.Stop()
for {
status, err := c.GetAtomicTxStatus(ctx, txID, options...)
if err != nil {
return err
}
if status == evm.Accepted {
return nil
}
select {
case <-ticker.C:
case <-ctx.Done():
return ctx.Err()
}
}
}