ipld-eth-server/pkg/transformers/shared/repository.go
2018-11-14 10:11:16 -06:00

80 lines
2.5 KiB
Go

package shared
import (
"database/sql"
"encoding/json"
"errors"
"github.com/ethereum/go-ethereum/core/types"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
)
var ErrHeaderMismatch = errors.New("log's block hash does not match associated header's block hash")
func ValidateHeaderConsistency(headerID int64, rawLog []byte, db *postgres.DB) error {
var log types.Log
err := json.Unmarshal(rawLog, &log)
if err != nil {
return err
}
var hash string
err = db.Get(&hash, `SELECT hash FROM public.headers WHERE id = $1`, headerID)
if err != nil {
return err
}
if hash != log.BlockHash.String() {
err = deleteHeader(headerID, db)
if err != nil {
return err
}
return ErrHeaderMismatch
}
return nil
}
func deleteHeader(headerID int64, db *postgres.DB) error {
_, err := db.Exec(`DELETE FROM public.headers WHERE id = $1`, headerID)
return err
}
func MarkHeaderChecked(headerID int64, db *postgres.DB, checkedHeadersColumn string) error {
_, err := db.Exec(`INSERT INTO public.checked_headers (header_id, `+checkedHeadersColumn+`)
VALUES ($1, $2)
ON CONFLICT (header_id) DO
UPDATE SET `+checkedHeadersColumn+` = $2`, headerID, true)
return err
}
func MarkHeaderCheckedInTransaction(headerID int64, tx *sql.Tx, checkedHeadersColumn string) error {
_, err := tx.Exec(`INSERT INTO public.checked_headers (header_id, `+checkedHeadersColumn+`)
VALUES ($1, $2)
ON CONFLICT (header_id) DO
UPDATE SET `+checkedHeadersColumn+` = $2`, headerID, true)
return err
}
func MissingHeaders(startingBlockNumber, endingBlockNumber int64, db *postgres.DB, checkedHeadersColumn string) ([]core.Header, error) {
var result []core.Header
var query string
var err error
if endingBlockNumber == -1 {
query = `SELECT headers.id, headers.block_number FROM headers
LEFT JOIN checked_headers on headers.id = header_id
WHERE (header_id ISNULL OR ` + checkedHeadersColumn + ` IS FALSE)
AND headers.block_number >= $1
AND headers.eth_node_fingerprint = $2`
err = db.Select(&result, query, startingBlockNumber, db.Node.ID)
} else {
query = `SELECT headers.id, headers.block_number FROM headers
LEFT JOIN checked_headers on headers.id = header_id
WHERE (header_id ISNULL OR ` + checkedHeadersColumn + ` IS FALSE)
AND headers.block_number >= $1
AND headers.block_number <= $2
AND headers.eth_node_fingerprint = $3`
err = db.Select(&result, query, startingBlockNumber, endingBlockNumber, db.Node.ID)
}
return result, err
}