zitadel/internal/eventstore/handler/crdb/failed_stmt.go
Livio Amstutz 1ac1492fd3
fix: handle multiple statements for a single event in projections (#2313)
* fix: handle multiple statements for a single event in projections

* export func type

* fix test

* Update internal/eventstore/handler/crdb/statement.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* Update internal/eventstore/handler/crdb/statement.go

Co-authored-by: Silvan <silvan.reusser@gmail.com>

* change to pointers

* add error test case

Co-authored-by: Silvan <silvan.reusser@gmail.com>
2021-09-08 13:54:31 +02:00

54 lines
1.9 KiB
Go

package crdb
import (
"database/sql"
"github.com/caos/logging"
"github.com/caos/zitadel/internal/errors"
"github.com/caos/zitadel/internal/eventstore/handler"
)
const (
setFailureCountStmtFormat = "UPSERT INTO %s" +
" (projection_name, failed_sequence, failure_count, error)" +
" VALUES ($1, $2, $3, $4)"
failureCountStmtFormat = "WITH failures AS (SELECT failure_count FROM %s WHERE projection_name = $1 AND failed_sequence = $2)" +
" SELECT IF(" +
"EXISTS(SELECT failure_count FROM failures)," +
" (SELECT failure_count FROM failures)," +
" 0" +
") AS failure_count"
)
func (h *StatementHandler) handleFailedStmt(tx *sql.Tx, stmt *handler.Statement, execErr error) (shouldContinue bool) {
failureCount, err := h.failureCount(tx, stmt.Sequence)
if err != nil {
logging.LogWithFields("CRDB-WJaFk", "projection", h.ProjectionName, "seq", stmt.Sequence).WithError(err).Warn("unable to get failure count")
return false
}
failureCount += 1
err = h.setFailureCount(tx, stmt.Sequence, failureCount, execErr)
logging.LogWithFields("CRDB-cI0dB", "projection", h.ProjectionName, "seq", stmt.Sequence).OnError(err).Warn("unable to update failure count")
return failureCount >= h.maxFailureCount
}
func (h *StatementHandler) failureCount(tx *sql.Tx, seq uint64) (count uint, err error) {
row := tx.QueryRow(h.failureCountStmt, h.ProjectionName, seq)
if err = row.Err(); err != nil {
return 0, errors.ThrowInternal(err, "CRDB-Unnex", "unable to update failure count")
}
if err = row.Scan(&count); err != nil {
return 0, errors.ThrowInternal(err, "CRDB-RwSMV", "unable to scann count")
}
return count, nil
}
func (h *StatementHandler) setFailureCount(tx *sql.Tx, seq uint64, count uint, err error) error {
_, dbErr := tx.Exec(h.setFailureCountStmt, h.ProjectionName, seq, count, err.Error())
if dbErr != nil {
return errors.ThrowInternal(dbErr, "CRDB-4Ht4x", "set failure count failed")
}
return nil
}