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refactor error handling in frob, pit, price, tend

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This commit is contained in:
yaoandrew
2019-01-11 10:07:00 -08:00
parent 657aaccff3
commit 525fada3d7
5 changed files with 113 additions and 63 deletions
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pkg/transformers/price_feeds/repository.go
+22 -12
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@@ -19,6 +19,7 @@ import (
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared"
"github.com/vulcanize/vulcanizedb/pkg/transformers/shared/constants"
"log"
)
type PriceFeedRepository struct {
@@ -26,29 +27,38 @@ type PriceFeedRepository struct {
}
func (repository PriceFeedRepository) Create(headerID int64, models []interface{}) error {
tx, err := repository.db.Begin()
if err != nil {
return err
tx, dBaseErr := repository.db.Begin()
if dBaseErr != nil {
return dBaseErr
}
for _, model := range models {
priceUpdate, ok := model.(PriceFeedModel)
if !ok {
tx.Rollback()
rollbackErr := tx.Rollback()
if rollbackErr != nil {
log.Println("failed to rollback ", rollbackErr)
}
return fmt.Errorf("model of type %T, not %T", model, PriceFeedModel{})
}
_, err = tx.Exec(`INSERT INTO maker.price_feeds (block_number, header_id, medianizer_address, usd_value, log_idx, tx_idx, raw_log)
_, execErr := tx.Exec(`INSERT INTO maker.price_feeds (block_number, header_id, medianizer_address, usd_value, log_idx, tx_idx, raw_log)
VALUES ($1, $2, $3, $4::NUMERIC, $5, $6, $7)`, priceUpdate.BlockNumber, headerID, priceUpdate.MedianizerAddress, priceUpdate.UsdValue, priceUpdate.LogIndex, priceUpdate.TransactionIndex, priceUpdate.Raw)
if err != nil {
tx.Rollback()
return err
if execErr != nil {
rollbackErr := tx.Rollback()
if rollbackErr != nil {
log.Println("failed to rollback ", rollbackErr)
}
return execErr
}
}
err = shared.MarkHeaderCheckedInTransaction(headerID, tx, constants.PriceFeedsChecked)
if err != nil {
tx.Rollback()
return err
checkHeaderErr := shared.MarkHeaderCheckedInTransaction(headerID, tx, constants.PriceFeedsChecked)
if checkHeaderErr != nil {
rollbackErr := tx.Rollback()
if rollbackErr != nil {
log.Println("failed to rollback ", rollbackErr)
}
return checkHeaderErr
}
return tx.Commit()
}