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some cleanup

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This commit is contained in:
Shlomi Noach 2017-03-01 14:13:54 +02:00
parent fc787dd75f
commit 2f6975d39a
1 changed files with 0 additions and 65 deletions
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65
go/logic/applier.go
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@ -891,9 +891,6 @@ func (this *Applier) buildDMLEventQuery(dmlEvent *binlog.BinlogDMLEvent) (query
{
if this.migrationContext.UniqueKey.IsPrimary() {
query, sharedArgs, err := sql.BuildPKInsertPreparedQuery(dmlEvent.DatabaseName, this.migrationContext.OriginalTableName, this.migrationContext.GetGhostTableName(), this.migrationContext.OriginalTableColumns, this.migrationContext.SharedColumns.Names(), this.migrationContext.MappedSharedColumns.Names(), this.migrationContext.UniqueKey, dmlEvent.NewColumnValues.AbstractValues(), this.migrationContext.IsTransactionalTable())
log.Errorf("-------------- insert")
log.Errorf("query: %+v", query)
log.Errorf("argss: %+v", sharedArgs)
return query, sharedArgs, false, 1, err
}
query, sharedArgs, err := sql.BuildDMLInsertQuery(dmlEvent.DatabaseName, this.migrationContext.GetGhostTableName(), this.migrationContext.OriginalTableColumns, this.migrationContext.SharedColumns, this.migrationContext.MappedSharedColumns, dmlEvent.NewColumnValues.AbstractValues())
@ -903,10 +900,6 @@ func (this *Applier) buildDMLEventQuery(dmlEvent *binlog.BinlogDMLEvent) (query
{
if this.migrationContext.UniqueKey.IsPrimary() {
query, sharedArgs, err := sql.BuildPKInsertPreparedQuery(dmlEvent.DatabaseName, this.migrationContext.OriginalTableName, this.migrationContext.GetGhostTableName(), this.migrationContext.OriginalTableColumns, this.migrationContext.SharedColumns.Names(), this.migrationContext.MappedSharedColumns.Names(), this.migrationContext.UniqueKey, dmlEvent.NewColumnValues.AbstractValues(), this.migrationContext.IsTransactionalTable())
log.Errorf("-------------- update")
log.Errorf("query: %+v", query)
log.Errorf("argss: %+v", sharedArgs)
return query, sharedArgs, false, 1, err
}
query, sharedArgs, uniqueKeyArgs, err := sql.BuildDMLUpdateQuery(dmlEvent.DatabaseName, this.migrationContext.GetGhostTableName(), this.migrationContext.OriginalTableColumns, this.migrationContext.SharedColumns, this.migrationContext.MappedSharedColumns, &this.migrationContext.UniqueKey.Columns, dmlEvent.NewColumnValues.AbstractValues(), dmlEvent.WhereColumnValues.AbstractValues())
@ -918,64 +911,6 @@ func (this *Applier) buildDMLEventQuery(dmlEvent *binlog.BinlogDMLEvent) (query
return "", args, false, 0, fmt.Errorf("Unknown dml event type: %+v", dmlEvent.DML)
}
// ApplyDMLEventQuery writes an entry to the ghost table, in response to an intercepted
// original-table binlog event
func (this *Applier) ApplyDMLEventQuery(dmlEvent *binlog.BinlogDMLEvent) error {
query, args, dataViaBinlog, rowDelta, err := this.buildDMLEventQuery(dmlEvent)
if err != nil {
return err
}
// TODO The below is in preparation for transactional writes on the ghost tables.
// Such writes would be, for example:
// - prepended with sql_mode setup
// - prepended with time zone setup
// - prepended with SET SQL_LOG_BIN=0
// - prepended with SET FK_CHECKS=0
// etc.
//
// a known problem: https://github.com/golang/go/issues/9373 -- bitint unsigned values, not supported in database/sql
// is solved by silently converting unsigned bigints to string values.
//
err = func() error {
tx, err := this.db.Begin()
if err != nil {
return err
}
extraSessionChanges := ""
if dataViaBinlog {
extraSessionChanges = `
SESSION time_zone = '+00:00',
`
}
sessionQuery := fmt.Sprintf(`SET
%s
sql_mode = CONCAT(@@session.sql_mode, ',STRICT_ALL_TABLES')
`, extraSessionChanges)
if _, err := tx.Exec(sessionQuery); err != nil {
return err
}
if _, err := tx.Exec(query, args...); err != nil {
return err
}
if err := tx.Commit(); err != nil {
return err
}
return nil
}()
if err != nil {
err = fmt.Errorf("%s; query=%s; args=%+v", err.Error(), query, args)
return log.Errore(err)
}
// no error
atomic.AddInt64(&this.migrationContext.TotalDMLEventsApplied, 1)
if this.migrationContext.CountTableRows {
atomic.AddInt64(&this.migrationContext.RowsDeltaEstimate, rowDelta)
}
return nil
}
// ApplyDMLEventQueries applies multiple DML queries onto the _ghost_ table
func (this *Applier) ApplyDMLEventQueries(dmlEvents [](*binlog.BinlogDMLEvent)) error {