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main.go
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main.go
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package main
import (
"flag"
"fmt"
"os"
"time"
"github.com/DexyProject/dexy-go/consumers"
"github.com/DexyProject/dexy-go/history"
"github.com/DexyProject/dexy-go/log"
"github.com/DexyProject/dexy-go/repositories"
"github.com/DexyProject/dexy-go/ticks"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
"go.uber.org/zap"
)
func main() {
defer deferOnPanic()
ethNode := flag.String("ethnode", "", "ethereum node address")
mongo := flag.String("mongo", "", "mongodb connection string")
flag.Parse()
if flag.NFlag() != 2 {
flag.PrintDefaults()
os.Exit(1)
}
channel := make(chan *types.Header)
conn, err := ethclient.Dial(*ethNode)
if err != nil {
log.Fatal("", zap.Error(err))
}
bc := consumers.NewBlockConsumer(conn, channel)
repo, err := repositories.NewCacheTokensRepository(*ethNode)
if err != nil {
log.Fatal("failed to create tokens repository", zap.Error(err))
}
aggregation, err := history.NewHistoryAggregation(*mongo, repo)
if err != nil {
log.Fatal("failed to create aggregation", zap.Error(err))
}
tickdb, err := ticks.NewMongoTicks(*mongo)
if err != nil {
log.Fatal("failed to create mongo ticks", zap.Error(err))
}
err = bc.StartConsuming()
if err != nil {
log.Fatal("failed to start consuming", zap.Error(err))
}
for {
head := <-channel
// we sleep here in case transactions are still inserting, 5 seconds should probably be enough
time.Sleep(5 * time.Second)
t, err := aggregation.AggregateTransactions(head.Number.Int64())
if err != nil {
log.Error("failed aggregating transactions", zap.Error(err))
}
if len(t) == 0 {
log.Debug("no ticks for block", zap.String("block", head.Number.String()))
continue
}
log.Debug("inserting ticks for block", zap.String("block", head.Number.String()))
err = tickdb.InsertTicks(t)
if err != nil {
log.Error("failed to insert ticks", zap.Error(err))
}
}
}
func deferOnPanic() {
if err := recover(); err != nil {
fmt.Println(err)
}
}