@ -3,6 +3,7 @@ package coordinator
import (
"context"
"fmt"
"sync"
"time"
ethCommon "github.com/ethereum/go-ethereum/common"
@ -12,199 +13,384 @@ import (
"github.com/hermeznetwork/hermez-node/db/historydb"
"github.com/hermeznetwork/hermez-node/eth"
"github.com/hermeznetwork/hermez-node/log"
"github.com/hermeznetwork/hermez-node/synchronizer"
"github.com/hermeznetwork/hermez-node/txselector"
)
var errTODO = fmt . Errorf ( "TODO" )
// ErrStop is returned when the function is stopped asynchronously via the stop
// channel. It doesn't indicate an error.
var ErrStop = fmt . Errorf ( "Stopped " )
// ErrDone is returned when the function is stopped asynchronously via a done
// (terminated) context. It doesn't indicate an error.
var ErrDone = fmt . Errorf ( "done " )
// Config contains the Coordinator configuration
type Config struct {
ForgerAddress ethCommon . Address
ConfirmBlocks int64
}
// Coordinator implements the Coordinator type
type Coordinator struct {
forging bool
// rw *sync.RWMutex
// isForgeSeq bool // WIP just for testing while implementing
config Config
// State
forging bool
batchNum common . BatchNum
serverProofPool * ServerProofPool
consts synchronizer . SCConsts
vars synchronizer . SCVariables
cfg Config
// synchronizer *synchronizer.Synchronizer
hdb * historydb . HistoryDB
txsel * txselector . TxSelector
batchBuilder * batchbuilder . BatchBuilder
ethClient eth . ClientInterface
ethTxs [ ] * types . Transaction
// ethTxStore kvdb.Storage
msgCh chan interface { }
ctx context . Context
wg sync . WaitGroup
cancel context . CancelFunc
pipelineCtx context . Context
pipelineWg sync . WaitGroup
pipelineCancel context . CancelFunc
txManager * TxManager
}
// NewCoordinator creates a new Coordinator
func NewCoordinator ( conf Config ,
func NewCoordinator ( cfg Config ,
hdb * historydb . HistoryDB ,
txsel * txselector . TxSelector ,
bb * batchbuilder . BatchBuilder ,
serverProofs [ ] ServerProofInterface ,
ethClient eth . ClientInterface ) * Coordinator { // once synchronizer is ready, synchronizer.Synchronizer will be passed as parameter here
ethClient eth . ClientInterface ,
scConsts * synchronizer . SCConsts ,
initSCVars * synchronizer . SCVariables ,
) * Coordinator { // once synchronizer is ready, synchronizer.Synchronizer will be passed as parameter here
serverProofPool := NewServerProofPool ( len ( serverProofs ) )
for _ , serverProof := range serverProofs {
serverProofPool . Add ( serverProof )
}
txManager := NewTxManager ( ethClient , cfg . ConfirmBlocks )
ctx , cancel := context . WithCancel ( context . Background ( ) )
c := Coordinator {
config : conf ,
forging : false ,
batchNum : - 1 ,
serverProofPool : serverProofPool ,
hdb : hdb ,
txsel : txsel ,
batchBuilder : bb ,
ethClient : ethClient ,
ethTxs : make ( [ ] * types . Transaction , 0 ) ,
// ethTxStore: memory.NewMemoryStorage(),
// rw: &sync.RWMutex{},
consts : * scConsts ,
vars : * initSCVars ,
cfg : cfg ,
hdb : hdb ,
txsel : txsel ,
batchBuilder : bb ,
ethClient : ethClient ,
msgCh : make ( chan interface { } ) ,
ctx : ctx ,
// wg
cancel : cancel ,
txManager : txManager ,
}
return & c
}
// TODO(Edu): Change the current design of the coordinator structur:
// - Move Start and Stop functions (from node/node.go) here
// - Add concept of StartPipeline, StopPipeline, that spawns and stops the goroutines
// - Add a Manager that calls StartPipeline and StopPipeline, checks when it's time to forge, schedules new batches, etc.
// - Add a TxMonitor that monitors successful ForgeBatch ethereum transactions and waits for N blocks of confirmation, and reports back errors to the Manager.
// ForgeLoopFn is the function ran in a loop that checks if it's time to forge
// and forges a batch if so and sends it to outBatchCh. Returns true if it's
// the coordinator turn to forge.
func ( c * Coordinator ) ForgeLoopFn ( outBatchCh chan * BatchInfo , stopCh chan bool ) ( forgetime bool , err error ) {
// TODO: Move the logic to check if it's forge time or not outside the pipeline
isForgeSequence , err := c . isForgeSequence ( )
if err != nil {
return false , err
// MsgSyncStats indicates an update to the Synchronizer stats
type MsgSyncStats struct {
Stats synchronizer . Stats
}
// MsgSyncSCVars indicates an update to Smart Contract Vars
type MsgSyncSCVars struct {
Rollup * common . RollupVariables
Auction * common . AuctionVariables
WDelayer * common . WDelayerVariables
}
// MsgSyncReorg indicates a reorg
type MsgSyncReorg struct {
}
// SendMsg is a thread safe method to pass a message to the Coordinator
func ( c * Coordinator ) SendMsg ( msg interface { } ) {
c . msgCh <- msg
}
func ( c * Coordinator ) handleMsgSyncSCVars ( msg * MsgSyncSCVars ) {
if msg . Rollup != nil {
c . vars . Rollup = * msg . Rollup
}
if msg . Auction != nil {
c . vars . Auction = * msg . Auction
}
if msg . WDelayer != nil {
c . vars . WDelayer = * msg . WDelayer
}
if ! isForgeSequence {
}
func ( c * Coordinator ) handleMsgSyncStats ( stats * synchronizer . Stats ) error {
if ! stats . Synced ( ) {
return nil
}
c . txManager . SetLastBlock ( stats . Eth . LastBlock )
anyoneForge := false
if stats . Sync . Auction . CurrentSlot . BatchesLen == 0 &&
c . consts . Auction . RelativeBlock ( stats . Eth . LastBlock ) > int64 ( c . vars . Auction . SlotDeadline ) {
log . Debug ( "Coordinator: anyone can forge in the current slot (slotDeadline passed)" )
anyoneForge = true
}
if stats . Sync . Auction . CurrentSlot . Forger != c . cfg . ForgerAddress && ! anyoneForge {
if c . forging {
log . Info ( "ForgeLoopFn: forging state end" )
log . Info ( "Coordinator : forging state end" )
c . forging = false
c . PipelineStop ( )
}
log . Debug ( "ForgeLoopFn: not in forge time" )
return false , nil
// log.Debug("Coordinator: not in forge time") // DBG
return nil
}
log . Debug ( "ForgeLoopFn: forge time" )
// log.Debug("Coordinator: forge time") // DBG
if ! c . forging {
// Start pipeline from a batchNum state taken from synchronizer
log . Info ( "ForgeLoopFn: forging state begin" )
// c.batchNum = c.hdb.GetLastBatchNum() // uncomment when HistoryDB is ready
log . Info ( "Coordinator : forging state begin" )
c . batchNum = common . BatchNum ( stats . Sync . LastBatch )
err := c . txsel . Reset ( c . batchNum )
if err != nil {
log . Errorw ( "ForgeLoopFn : TxSelector.Reset" , "error" , err )
return true , err
log . Errorw ( "Coordinator : TxSelector.Reset" , "error" , err )
return err
}
err = c . batchBuilder . Reset ( c . batchNum , true )
if err != nil {
log . Errorw ( "ForgeLoopFn : BatchBuilder.Reset" , "error" , err )
return true , err
log . Errorw ( "Coordinator : BatchBuilder.Reset" , "error" , err )
return err
}
// c.batchQueue = NewBatchQueue()
c . forging = true
c . PipelineStart ( )
}
// TODO once synchronizer has this method ready:
// If there's been a reorg, handle it
// handleReorg() function decides if the reorg must restart the pipeline or not
// if c.synchronizer.Reorg():
_ = c . handleReorg ( )
return nil
}
defer func ( ) {
if err == ErrStop {
log . Info ( "ForgeLoopFn: forgeLoopFn stopped" )
}
// Start the coordinator
func ( c * Coordinator ) Start ( ) {
c . wg . Add ( 1 )
go func ( ) {
c . txManager . Run ( c . ctx )
c . wg . Done ( )
} ( )
// 0. Wait for an available server proof
// blocking call
serverProof , err := c . serverProofPool . Get ( stopCh )
if err != nil {
return true , err
}
defer func ( ) {
if ! forgetime || err != nil {
c . serverProofPool . Add ( serverProof )
c . wg . Add ( 1 )
go func ( ) {
for {
select {
case <- c . ctx . Done ( ) :
log . Info ( "Coordinator done" )
c . wg . Done ( )
return
case msg := <- c . msgCh :
switch msg := msg . ( type ) {
case MsgSyncStats :
stats := msg . Stats
if err := c . handleMsgSyncStats ( & stats ) ; err != nil {
log . Errorw ( "Coordinator.handleMsgSyncStats error" , "err" , err )
}
case MsgSyncReorg :
if err := c . handleReorg ( ) ; err != nil {
log . Errorw ( "Coordinator.handleReorg error" , "err" , err )
}
case MsgSyncSCVars :
c . handleMsgSyncSCVars ( & msg )
default :
log . Fatalw ( "Coordinator Unexpected Coordinator msg of type %T: %+v" , msg , msg )
}
}
}
} ( )
}
log . Debugw ( "ForgeLoopFn: using serverProof" , "server" , serverProof )
log . Debugw ( "ForgeLoopFn: forge start" )
// forge for batchNum = batchNum + 1.
batchInfo , err := c . forge ( serverProof )
if err != nil {
log . Errorw ( "forge" , "error" , err )
return true , err
// Stop the coordinator
func ( c * Coordinator ) Stop ( ) {
log . Infow ( "Stopping coordinator..." )
c . cancel ( )
c . wg . Wait ( )
if c . forging {
c . forging = false
c . PipelineStop ( )
}
log . Debugw ( "ForgeLoopFn: forge end" , "batchNum" , batchInfo . batchNum )
outBatchCh <- batchInfo
return true , nil
}
// GetProofCallForgeLoopFn is the function ran in a loop that gets a forged
// batch via inBatchCh, waits for the proof server to finish, calls the ForgeBatch
// function in the Rollup Smart Contract, and sends the batch to outBatchCh.
func ( c * Coordinator ) GetProofCallForgeLoopFn ( inBatchCh , outBatchCh chan * BatchInfo , stopCh chan bool ) ( err error ) {
defer func ( ) {
if err == ErrStop {
log . Info ( "GetProofCallForgeLoopFn: forgeLoopFn stopped" )
// PipelineStart starts the forging pipeline
func ( c * Coordinator ) PipelineStart ( ) {
c . pipelineCtx , c . pipelineCancel = context . WithCancel ( context . Background ( ) )
queueSize := 1
batchChSentServerProof := make ( chan * BatchInfo , queueSize )
c . pipelineWg . Add ( 1 )
go func ( ) {
for {
select {
case <- c . pipelineCtx . Done ( ) :
log . Debug ( "Pipeline forgeSendServerProof loop done" )
c . pipelineWg . Done ( )
return
default :
c . batchNum = c . batchNum + 1
batchInfo , err := c . forgeSendServerProof ( c . pipelineCtx , c . batchNum )
if err == ErrDone {
continue
}
if err != nil {
log . Errorw ( "forgeSendServerProof" , "err" , err )
continue
}
batchChSentServerProof <- batchInfo
}
}
} ( )
select {
case <- stopCh :
return ErrStop
case batchInfo := <- inBatchCh :
log . Debugw ( "GetProofCallForgeLoopFn: getProofCallForge start" , "batchNum" , batchInfo . batchNum )
if err := c . getProofCallForge ( batchInfo , stopCh ) ; err != nil {
return err
c . pipelineWg . Add ( 1 )
go func ( ) {
for {
select {
case <- c . pipelineCtx . Done ( ) :
log . Debug ( "Pipeline waitServerProofSendEth loop done" )
c . pipelineWg . Done ( )
return
case batchInfo := <- batchChSentServerProof :
err := c . waitServerProof ( c . pipelineCtx , batchInfo )
if err == ErrDone {
continue
}
if err != nil {
log . Errorw ( "waitServerProof" , "err" , err )
continue
}
c . txManager . AddBatch ( batchInfo )
}
}
log . Debugw ( "GetProofCallForgeLoopFn: getProofCallForge end" , "batchNum" , batchInfo . batchNum )
outBatchCh <- batchInfo
} ( )
}
// PipelineStop stops the forging pipeline
func ( c * Coordinator ) PipelineStop ( ) {
log . Debug ( "Stopping pipeline..." )
c . pipelineCancel ( )
c . pipelineWg . Wait ( )
}
// TxManager handles everything related to ethereum transactions: It makes the
// call to forge, waits for transaction confirmation, and keeps checking them
// until a number of confirmed blocks have passed.
type TxManager struct {
ethClient eth . ClientInterface
batchCh chan * BatchInfo
lastBlockCh chan int64
queue [ ] * BatchInfo
confirmation int64
lastBlock int64
}
// NewTxManager creates a new TxManager
func NewTxManager ( ethClient eth . ClientInterface , confirmation int64 ) * TxManager {
return & TxManager {
ethClient : ethClient ,
// TODO: Find best queue size
batchCh : make ( chan * BatchInfo , 16 ) , //nolint:gomnd
// TODO: Find best queue size
lastBlockCh : make ( chan int64 , 16 ) , //nolint:gomnd
confirmation : confirmation ,
lastBlock : - 1 ,
}
return nil
}
// ForgeCallConfirmLoopFn is the function ran in a loop that gets a batch that
// has been sent to the Rollup Smart Contract via inBatchCh and waits for the
// ethereum transaction confirmation.
func ( c * Coordinator ) ForgeCallConfirmLoopFn ( inBatchCh chan * BatchInfo , stopCh chan bool ) ( err error ) {
defer func ( ) {
if err == ErrStop {
log . Info ( "ForgeCallConfirmLoopFn: forgeConfirmLoopFn stopped" )
}
} ( )
select {
case <- stopCh :
return ErrStop
case batchInfo := <- inBatchCh :
log . Debugw ( "ForgeCallConfirmLoopFn: forgeCallConfirm start" , "batchNum" , batchInfo . batchNum )
if err := c . forgeCallConfirm ( batchInfo , stopCh ) ; err != nil {
return err
// AddBatch is a thread safe method to pass a new batch TxManager to be sent to
// the smart contract via the forge call
func ( t * TxManager ) AddBatch ( batchInfo * BatchInfo ) {
t . batchCh <- batchInfo
}
// SetLastBlock is a thread safe method to pass the lastBlock to the TxManager
func ( t * TxManager ) SetLastBlock ( lastBlock int64 ) {
t . lastBlockCh <- lastBlock
}
const waitTime = 200 * time . Millisecond
const longWaitTime = 999 * time . Hour
// Run the TxManager
func ( t * TxManager ) Run ( ctx context . Context ) {
next := 0
d := time . Duration ( longWaitTime )
for {
select {
case <- ctx . Done ( ) :
log . Info ( "TxManager done" )
return
case lastBlock := <- t . lastBlockCh :
t . lastBlock = lastBlock
case batchInfo := <- t . batchCh :
ethTx , err := t . ethClient . RollupForgeBatch ( batchInfo . ForgeBatchArgs )
if err != nil {
// TODO: Figure out different error cases and handle them properly
log . Errorw ( "TxManager ethClient.RollupForgeBatch" , "err" , err )
continue
}
log . Debugf ( "ethClient ForgeCall sent, batchNum: %d" , batchInfo . BatchNum )
batchInfo . EthTx = ethTx
t . queue = append ( t . queue , batchInfo )
d = waitTime
case <- time . After ( d ) :
if len ( t . queue ) == 0 {
continue
}
batchInfo := t . queue [ next ]
txID := batchInfo . EthTx . Hash ( )
receipt , err := t . ethClient . EthTransactionReceipt ( ctx , txID )
if err != nil {
log . Errorw ( "TxManager ethClient.EthTransactionReceipt" , "err" , err )
// TODO: Figure out different error cases and handle them properly
// TODO: Notify the Coordinator to maybe reset the pipeline
continue
}
if receipt != nil {
if receipt . Status == types . ReceiptStatusFailed {
log . Errorw ( "TxManager receipt status is failed" , "receipt" , receipt )
} else if receipt . Status == types . ReceiptStatusSuccessful {
if t . lastBlock - receipt . BlockNumber . Int64 ( ) >= t . confirmation {
log . Debugw ( "TxManager tx for RollupForgeBatch confirmed" , "batchNum" , batchInfo . BatchNum )
t . queue = t . queue [ 1 : ]
if len ( t . queue ) == 0 {
d = longWaitTime
}
}
}
}
if len ( t . queue ) == 0 {
next = 0
} else {
next = ( next + 1 ) % len ( t . queue )
}
}
log . Debugw ( "ForgeCallConfirmLoopFn: forgeCallConfirm end" , "batchNum" , batchInfo . batchNum )
}
return nil
}
func ( c * Coordinator ) forge ( serverProof ServerProofInterface ) ( * BatchInfo , error ) {
// forgeSendServerProof the next batch, wait for a proof server to be available and send the
// circuit inputs to the proof server.
func ( c * Coordinator ) forgeSendServerProof ( ctx context . Context , batchNum common . BatchNum ) ( * BatchInfo , error ) {
// remove transactions from the pool that have been there for too long
err := c . purgeRemoveByTimeout ( )
if err != nil {
return nil , err
}
c . batchNum = c . batchNum + 1
batchInfo := NewBatchInfo ( c . batchNum , serverProof ) // to accumulate metadata of the batch
batchInfo := BatchInfo { BatchNum : batchNum } // to accumulate metadata of the batch
var poolL2Txs [ ] common . PoolL2Tx
// var feesInfo
@ -213,14 +399,14 @@ func (c *Coordinator) forge(serverProof ServerProofInterface) (*BatchInfo, error
if c . shouldL1L2Batch ( ) {
// 2a: L1+L2 txs
// l1UserTxs, toForgeL1TxsNumber := c.hdb.GetNextL1UserTxs() // TODO once HistoryDB is ready, uncomment
var l1UserTxs [ ] common . L1Tx = nil // tmp, depends on HistoryDB
l1UserTxsExtra , l1OperatorTxs , poolL2Txs , err = c . txsel . GetL1L2TxSelection ( [ ] common . Idx { } , c . batchNum , l1UserTxs ) // TODO once feesInfo is added to method return, add the var
var l1UserTxs [ ] common . L1Tx = nil // tmp, depends on HistoryDB
l1UserTxsExtra , l1OperatorTxs , poolL2Txs , err = c . txsel . GetL1L2TxSelection ( [ ] common . Idx { } , batchNum , l1UserTxs ) // TODO once feesInfo is added to method return, add the var
if err != nil {
return nil , err
}
} else {
// 2b: only L2 txs
_ , poolL2Txs , err = c . txsel . GetL2TxSelection ( [ ] common . Idx { } , c . batchNum ) // TODO once feesInfo is added to method return, add the var
_ , poolL2Txs , err = c . txsel . GetL2TxSelection ( [ ] common . Idx { } , batchNum ) // TODO once feesInfo is added to method return, add the var
if err != nil {
return nil , err
}
@ -238,11 +424,14 @@ func (c *Coordinator) forge(serverProof ServerProofInterface) (*BatchInfo, error
}
// 3. Save metadata from TxSelector output for BatchNum
batchInfo . SetTxsInfo ( l1UserTxsExtra , l1OperatorTxs , poolL2Txs ) // TODO feesInfo
// batchInfo.SetTxsInfo(l1UserTxsExtra, l1OperatorTxs, poolL2Txs) // TODO feesInfo
batchInfo . L1UserTxsExtra = l1UserTxsExtra
batchInfo . L1OperatorTxs = l1OperatorTxs
batchInfo . L2Txs = poolL2Txs
// 4. Call BatchBuilder with TxSelector output
configBatch := & batchbuilder . ConfigBatch {
ForgerAddress : c . con fi g . ForgerAddress ,
ForgerAddress : c . cfg . ForgerAddress ,
}
zkInputs , err := c . batchBuilder . BuildBatch ( [ ] common . Idx { } , configBatch , l1UserTxsExtra , l1OperatorTxs , poolL2Txs , nil ) // TODO []common.TokenID --> feesInfo
if err != nil {
@ -250,10 +439,25 @@ func (c *Coordinator) forge(serverProof ServerProofInterface) (*BatchInfo, error
}
// 5. Save metadata from BatchBuilder output for BatchNum
batchInfo . SetZKInputs ( zkInputs )
batchInfo . ZKInputs = zkInputs
// 6. Wait for an available server proof blocking call
serverProof , err := c . serverProofPool . Get ( ctx )
if err != nil {
return nil , err
}
batchInfo . ServerProof = serverProof
defer func ( ) {
// If there's an error further on, add the serverProof back to
// the pool
if err != nil {
c . serverProofPool . Add ( serverProof )
}
} ( )
// 6. Call an idle server proof with BatchBuilder output, save server proof info for batchNum
err = batchInfo . serverProof . CalculateProof ( zkInputs )
// 7. Call the selected idle server proof with BatchBuilder output,
// save server proof info for batchNum
err = batchInfo . ServerProof . CalculateProof ( zkInputs )
if err != nil {
return nil , err
}
@ -261,24 +465,17 @@ func (c *Coordinator) forge(serverProof ServerProofInterface) (*BatchInfo, error
return & batchInfo , nil
}
// getProofCallForge gets the generated zkProof & sends it to the SmartContract
func ( c * Coordinator ) getProofCallForge ( batchInfo * BatchInfo , stopCh chan bool ) error {
serverProof := batchInfo . serverProof
proof , err := serverProof . GetProof ( stopCh ) // blocking call, until not resolved don't continue. Returns when the proof server has calculated the proof
c . serverProofPool . Add ( serverProof )
batchInfo . serverProof = nil
if err != nil {
return err
}
batchInfo . SetProof ( proof )
forgeBatchArgs := c . prepareForgeBatchArgs ( batchInfo )
ethTx , err := c . ethClient . RollupForgeBatch ( forgeBatchArgs )
// waitServerProof gets the generated zkProof & sends it to the SmartContract
func ( c * Coordinator ) waitServerProof ( ctx context . Context , batchInfo * BatchInfo ) error {
proof , err := batchInfo . ServerProof . GetProof ( ctx ) // blocking call, until not resolved don't continue. Returns when the proof server has calculated the proof
if err != nil {
return err
}
// TODO: Move this to the next step (forgeCallConfirm)
log . Debugf ( "ethClient ForgeCall sent, batchNum: %d" , c . batchNum )
batchInfo . SetEthTx ( ethTx )
c . serverProofPool . Add ( batchInfo . ServerProof )
batchInfo . ServerProof = nil
batchInfo . Proof = proof
batchInfo . ForgeBatchArgs = c . prepareForgeBatchArgs ( batchInfo )
batchInfo . TxStatus = TxStatusPending
// TODO(FUTURE) once tx data type is defined, store ethTx (returned by ForgeCall)
// TBD if use ethTxStore as a disk k-v database, or use a Queue
@ -294,65 +491,23 @@ func (c *Coordinator) getProofCallForge(batchInfo *BatchInfo, stopCh chan bool)
return nil
}
func ( c * Coordinator ) forgeCallConfirm ( batchInfo * BatchInfo , stopCh chan bool ) error {
// TODO strategy of this sequence TBD
// confirm eth txs and mark them as accepted sequence
// IDEA: Keep an array in Coordinator with the list of sent ethTx.
// Here, loop over them and only delete them once the number of
// confirmed blocks is over a configured value. If the tx is rejected,
// return error.
// ethTx := ethTxStore.GetFirstPending()
// waitForAccepted(ethTx) // blocking call, returns once the ethTx is mined
// ethTxStore.MarkAccepted(ethTx)
txID := batchInfo . ethTx . Hash ( )
// TODO: Follow EthereumClient.waitReceipt logic
count := 0
// TODO: Define this waitTime in the config
waitTime := 100 * time . Millisecond //nolint:gomnd
select {
case <- time . After ( waitTime ) :
receipt , err := c . ethClient . EthTransactionReceipt ( context . TODO ( ) , txID )
if err != nil {
return err
}
if receipt != nil {
if receipt . Status == types . ReceiptStatusFailed {
return fmt . Errorf ( "receipt status is failed" )
} else if receipt . Status == types . ReceiptStatusSuccessful {
return nil
}
}
// TODO: Call go-ethereum:
// if err == nil && receipt == nil :
// `func (ec *Client) TransactionByHash(ctx context.Context, hash common.Hash) (tx *types.Transaction, isPending bool, err error) {`
count ++
if time . Duration ( count ) * waitTime > 60 * time . Second {
log . Warnw ( "Waiting for ethTx receipt for more than 60 seconds" , "tx" , batchInfo . ethTx )
// TODO: Decide if we resend the Tx with higher gas price
}
case <- stopCh :
return ErrStop
}
return fmt . Errorf ( "timeout" )
}
func ( c * Coordinator ) handleReorg ( ) error {
return nil // TODO
}
// isForgeSequence returns true if the node is the Forger in the current ethereum block
func ( c * Coordinator ) isForgeSequence ( ) ( bool , error ) {
// TODO: Consider checking if we can forge by quering the Synchronizer instead of using ethClient
blockNum , err := c . ethClient . EthCurrentBlock ( )
if err != nil {
return false , err
}
addr , err := c . ethClient . EthAddress ( )
if err != nil {
return false , err
}
return c . ethClient . AuctionCanForge ( * addr , blockNum + 1 )
}
// func (c *Coordinator) isForgeSequence() (bool, error) {
// // TODO: Consider checking if we can forge by quering the Synchronizer instead of using ethClient
// blockNum, err := c.ethClient.EthLastBlock()
// if err != nil {
// return false, err
// }
// addr, err := c.ethClient.EthAddress()
// if err != nil {
// return false, err
// }
// return c.ethClient.AuctionCanForge(*addr, blockNum+1)
// }
func ( c * Coordinator ) purgeRemoveByTimeout ( ) error {
return nil // TODO
Eduard S
4 years ago