lotus/node/modules/ethmodule.go

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package modules
import (
"context"
"os"
"path/filepath"
"go.uber.org/fx"
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"github.com/filecoin-project/lotus/chain/ethhashlookup"
"github.com/filecoin-project/lotus/chain/events"
"github.com/filecoin-project/lotus/chain/messagepool"
"github.com/filecoin-project/lotus/chain/stmgr"
"github.com/filecoin-project/lotus/chain/store"
"github.com/filecoin-project/lotus/node/config"
"github.com/filecoin-project/lotus/node/impl/full"
"github.com/filecoin-project/lotus/node/modules/helpers"
"github.com/filecoin-project/lotus/node/repo"
)
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func EthModuleAPI(cfg config.FevmConfig) func(helpers.MetricsCtx, repo.LockedRepo, fx.Lifecycle, *store.ChainStore, *stmgr.StateManager, EventAPI, *messagepool.MessagePool, full.StateAPI, full.ChainAPI, full.MpoolAPI) (*full.EthModule, error) {
return func(mctx helpers.MetricsCtx, r repo.LockedRepo, lc fx.Lifecycle, cs *store.ChainStore, sm *stmgr.StateManager, evapi EventAPI, mp *messagepool.MessagePool, stateapi full.StateAPI, chainapi full.ChainAPI, mpoolapi full.MpoolAPI) (*full.EthModule, error) {
sqlitePath, err := r.SqlitePath()
if err != nil {
return nil, err
}
dbPath := filepath.Join(sqlitePath, "txhash.db")
// Check if the db exists, if not, we'll back-fill some entries
_, err = os.Stat(dbPath)
dbAlreadyExists := err == nil
transactionHashLookup, err := ethhashlookup.NewTransactionHashLookup(dbPath)
if err != nil {
return nil, err
}
lc.Append(fx.Hook{
OnStop: func(ctx context.Context) error {
return transactionHashLookup.Close()
},
})
ethTxHashManager := full.EthTxHashManager{
StateAPI: stateapi,
TransactionHashLookup: transactionHashLookup,
}
if !dbAlreadyExists {
err = ethTxHashManager.PopulateExistingMappings(mctx, 0)
if err != nil {
return nil, err
}
}
const ChainHeadConfidence = 1
ctx := helpers.LifecycleCtx(mctx, lc)
lc.Append(fx.Hook{
OnStart: func(context.Context) error {
ev, err := events.NewEventsWithConfidence(ctx, &evapi, ChainHeadConfidence)
if err != nil {
return err
}
// Tipset listener
_ = ev.Observe(&ethTxHashManager)
ch, err := mp.Updates(ctx)
if err != nil {
return err
}
go full.WaitForMpoolUpdates(ctx, ch, &ethTxHashManager)
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go full.EthTxHashGC(ctx, cfg.EthTxHashMappingLifetimeDays, &ethTxHashManager)
return nil
},
})
return &full.EthModule{
Chain: cs,
Mpool: mp,
StateManager: sm,
ChainAPI: chainapi,
MpoolAPI: mpoolapi,
StateAPI: stateapi,
EthTxHashManager: &ethTxHashManager,
}, nil
}
}