cic-dw/internal/syncer/token.go

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package syncer
import (
"context"
"github.com/georgysavva/scany/pgxscan"
"github.com/hibiken/asynq"
"github.com/jackc/pgx/v4"
"github.com/lmittmann/w3"
"github.com/rs/zerolog/log"
"math/big"
"strconv"
)
type tokenCursor struct {
cursorPos string `db:"cursor_pos"`
}
func (s *Syncer) TokenSyncer(ctx context.Context, t *asynq.Task) error {
var lastCursor tokenCursor
if err := pgxscan.Get(ctx, s.db, &lastCursor, s.queries["cursor-pos"], 3); err != nil {
return err
}
latestChainIdx, err := s.cicnetClient.EntryCount(ctx)
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
lastCursorPos, err := strconv.ParseInt(lastCursor.cursorPos, 10, 64)
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
latestChainPos := latestChainIdx.Int64() - 1
log.Info().Msgf("=> %d tokens synced", lastCursorPos)
if latestChainPos >= lastCursorPos {
batch := &pgx.Batch{}
for i := lastCursorPos; i <= latestChainPos; i++ {
nextTokenAddress, err := s.cicnetClient.AddressAtIndex(ctx, big.NewInt(i))
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
tokenInfo, err := s.cicnetClient.ERC20TokenInfo(ctx, w3.A(nextTokenAddress))
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
batch.Queue(s.queries["insert-token-data"], nextTokenAddress[2:], tokenInfo.Name, tokenInfo.Symbol, tokenInfo.Decimals.Int64())
}
res := s.db.SendBatch(ctx, batch)
for i := 0; i < batch.Len(); i++ {
_, err := res.Exec()
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
}
err := res.Close()
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
_, err = s.db.Exec(ctx, s.queries["update-cursor"], strconv.FormatInt(latestChainIdx.Int64(), 10), 3)
if err != nil {
log.Err(err).Msg("token syncer task failed")
return err
}
}
return nil
}