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package main
import (
"context"
"fmt"
"math/big"
"os"
"sync"
"time"
"github.com/mattn/go-isatty"
"github.com/urfave/cli/v2"
"github.com/ethereum-optimism/optimism/op-chain-ops/util"
"github.com/ethereum-optimism/optimism/op-bindings/bindings"
legacy_bindings "github.com/ethereum-optimism/optimism/op-bindings/legacy-bindings"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rpc"
)
func main() {
log.Root().SetHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(isatty.IsTerminal(os.Stderr.Fd()))))
app := cli.NewApp()
app.Name = "rollover"
app.Usage = "Commands for assisting in the rollover of the system"
var flags []cli.Flag
flags = append(flags, util.ClientsFlags...)
flags = append(flags, util.AddressesFlags...)
app.Commands = []*cli.Command{
{
Name: "deposits",
Usage: "Ensures that all deposits have been ingested into L2",
Flags: flags,
Action: func(cliCtx *cli.Context) error {
clients, err := util.NewClients(cliCtx)
if err != nil {
return err
}
addresses, err := util.NewAddresses(cliCtx)
if err != nil {
return err
}
log.Info("Requires an archive node")
log.Info("Connecting to AddressManager", "address", addresses.AddressManager)
addressManager, err := bindings.NewAddressManager(addresses.AddressManager, clients.L1Client)
if err != nil {
return err
}
for {
shutoffBlock, err := addressManager.GetAddress(&bind.CallOpts{}, "DTL_SHUTOFF_BLOCK")
if err != nil {
return err
}
if num := shutoffBlock.Big(); num.Cmp(common.Big0) != 0 {
log.Info("DTL_SHUTOFF_BLOCK is set", "number", num.Uint64())
break
}
log.Info("DTL_SHUTOFF_BLOCK not set yet")
time.Sleep(3 * time.Second)
}
shutoffBlock, err := addressManager.GetAddress(&bind.CallOpts{}, "DTL_SHUTOFF_BLOCK")
if err != nil {
return err
}
shutoffHeight := shutoffBlock.Big()
log.Info("Connecting to CanonicalTransactionChain", "address", addresses.CanonicalTransactionChain)
ctc, err := legacy_bindings.NewCanonicalTransactionChain(addresses.CanonicalTransactionChain, clients.L1Client)
if err != nil {
return err
}
queueLength, err := ctc.GetQueueLength(&bind.CallOpts{
BlockNumber: shutoffHeight,
})
if err != nil {
return err
}
totalElements, err := ctc.GetTotalElements(&bind.CallOpts{
BlockNumber: shutoffHeight,
})
if err != nil {
return err
}
totalBatches, err := ctc.GetTotalBatches(&bind.CallOpts{
BlockNumber: shutoffHeight,
})
if err != nil {
return err
}
pending, err := ctc.GetNumPendingQueueElements(&bind.CallOpts{
BlockNumber: shutoffHeight,
})
if err != nil {
return err
}
log.Info(
"CanonicalTransactionChain",
"address", addresses.CanonicalTransactionChain,
"queue-length", queueLength,
"total-elements", totalElements,
"total-batches", totalBatches,
"pending", pending,
)
blockNumber, err := clients.L2Client.BlockNumber(context.Background())
if err != nil {
return err
}
log.Info("Searching backwards for final deposit", "start", blockNumber)
// Walk backards through the blocks until we find the final deposit.
for {
bn := new(big.Int).SetUint64(blockNumber)
log.Info("Checking L2 block", "number", bn)
block, err := clients.L2Client.BlockByNumber(context.Background(), bn)
if err != nil {
return err
}
if length := len(block.Transactions()); length != 1 {
return fmt.Errorf("unexpected number of transactions in block: %d", length)
}
tx := block.Transactions()[0]
hash := tx.Hash()
json, err := legacyTransactionByHash(clients.L2RpcClient, hash)
if err != nil {
return err
}
// If the queue origin is l1, then it is a deposit.
if json.QueueOrigin == "l1" {
if json.QueueIndex == nil {
// This should never happen.
return fmt.Errorf("queue index is nil for tx %s at height %d", hash.Hex(), blockNumber)
}
queueIndex := uint64(*json.QueueIndex)
if json.L1BlockNumber == nil {
// This should never happen.
return fmt.Errorf("L1 block number is nil for tx %s at height %d", hash.Hex(), blockNumber)
}
l1BlockNumber := json.L1BlockNumber.ToInt()
log.Info("Deposit found", "l2-block", blockNumber, "l1-block", l1BlockNumber, "queue-index", queueIndex)
// This should never happen
if json.L1BlockNumber.ToInt().Uint64() > shutoffHeight.Uint64() {
log.Warn("Lost deposit")
return fmt.Errorf("Lost deposit: %s", hash.Hex())
}
// Check to see if the final deposit was ingested. Subtract 1 here to handle zero
// indexing.
if queueIndex == queueLength.Uint64()-1 {
log.Info("Found final deposit in l2geth", "queue-index", queueIndex)
break
}
// If the queue index is less than the queue length, then not all deposits have
// been ingested by l2geth yet. This means that we need to reset the blocknumber
// to the latest block number to restart walking backwards to find deposits that
// have yet to be ingested.
if queueIndex < queueLength.Uint64() {
log.Info("Not all deposits ingested", "queue-index", queueIndex, "queue-length", queueLength.Uint64())
time.Sleep(time.Second * 3)
blockNumber, err = clients.L2Client.BlockNumber(context.Background())
if err != nil {
return err
}
continue
}
// The queueIndex should never be greater than the queue length.
if queueIndex > queueLength.Uint64() {
log.Warn("Queue index is greater than queue length", "queue-index", queueIndex, "queue-length", queueLength.Uint64())
}
}
blockNumber--
}
finalPending, err := ctc.GetNumPendingQueueElements(&bind.CallOpts{})
if err != nil {
return err
}
log.Info("Remaining deposits that must be submitted", "count", finalPending)
if finalPending.Cmp(common.Big0) == 0 {
log.Info("All deposits have been batch submitted")
}
return nil
},
},
{
Name: "batches",
Usage: "Ensures that all batches have been submitted to L1",
Flags: flags,
Action: func(cliCtx *cli.Context) error {
clients, err := util.NewClients(cliCtx)
if err != nil {
return err
}
addresses, err := util.NewAddresses(cliCtx)
if err != nil {
return err
}
log.Info("Connecting to CanonicalTransactionChain", "address", addresses.CanonicalTransactionChain)
ctc, err := legacy_bindings.NewCanonicalTransactionChain(addresses.CanonicalTransactionChain, clients.L1Client)
if err != nil {
return err
}
log.Info("Connecting to StateCommitmentChain", "address", addresses.StateCommitmentChain)
scc, err := legacy_bindings.NewStateCommitmentChain(addresses.StateCommitmentChain, clients.L1Client)
if err != nil {
return err
}
var wg sync.WaitGroup
log.Info("Waiting for CanonicalTransactionChain")
wg.Add(1)
go waitForTotalElements(&wg, ctc, clients.L2Client, "CanonicalTransactionChain")
log.Info("Waiting for StateCommitmentChain")
wg.Add(1)
go waitForTotalElements(&wg, scc, clients.L2Client, "StateCommitmentChain")
wg.Wait()
log.Info("All batches have been submitted")
return nil
},
},
}
if err := app.Run(os.Args); err != nil {
log.Crit("Application failed", "message", err)
}
}
// RollupContract represents a legacy rollup contract interface that
// exposes the GetTotalElements function. Both the StateCommitmentChain
// and the CanonicalTransactionChain implement this interface.
type RollupContract interface {
GetTotalElements(opts *bind.CallOpts) (*big.Int, error)
}
// waitForTotalElements will poll to see
func waitForTotalElements(wg *sync.WaitGroup, contract RollupContract, client *ethclient.Client, name string) {
defer wg.Done()
for {
bn, err := client.BlockNumber(context.Background())
if err != nil {
log.Error("cannot fetch blocknumber", "error", err)
time.Sleep(3 * time.Second)
continue
}
totalElements, err := contract.GetTotalElements(&bind.CallOpts{})
if err != nil {
log.Error("cannot fetch total elements", "error", err)
time.Sleep(3 * time.Second)
continue
}
if totalElements.Uint64() == bn {
log.Info("Total elements matches block number", "name", name, "count", bn)
return
}
log.Info(
"Waiting for elements to be submitted",
"name", name,
"count", bn-totalElements.Uint64(),
"height", bn,
"total-elements", totalElements.Uint64(),
)
time.Sleep(3 * time.Second)
}
}
// legacyTransactionByHash will fetch a transaction by hash and be sure to decode
// the additional fields added to legacy transactions.
func legacyTransactionByHash(client *rpc.Client, hash common.Hash) (*RPCTransaction, error) {
var json *RPCTransaction
err := client.CallContext(context.Background(), &json, "eth_getTransactionByHash", hash)
if err != nil {
return nil, err
}
return json, nil
}
// RPCTransaction represents a transaction that will serialize to the RPC representation of a
// transaction. This handles the extra legacy fields added to transactions.
type RPCTransaction struct {
BlockHash *common.Hash `json:"blockHash"`
BlockNumber *hexutil.Big `json:"blockNumber"`
From common.Address `json:"from"`
Gas hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
Hash common.Hash `json:"hash"`
Input hexutil.Bytes `json:"input"`
Nonce hexutil.Uint64 `json:"nonce"`
To *common.Address `json:"to"`
TransactionIndex *hexutil.Uint64 `json:"transactionIndex"`
Value *hexutil.Big `json:"value"`
V *hexutil.Big `json:"v"`
R *hexutil.Big `json:"r"`
S *hexutil.Big `json:"s"`
QueueOrigin string `json:"queueOrigin"`
L1TxOrigin *common.Address `json:"l1TxOrigin"`
L1BlockNumber *hexutil.Big `json:"l1BlockNumber"`
L1Timestamp hexutil.Uint64 `json:"l1Timestamp"`
Index *hexutil.Uint64 `json:"index"`
QueueIndex *hexutil.Uint64 `json:"queueIndex"`
RawTransaction hexutil.Bytes `json:"rawTransaction"`
}