Exemplo n.º 1
0
func (qe *QueryEngine) execDDL(logStats *sqlQueryStats, ddl string) *mproto.QueryResult {
	ddlPlan := sqlparser.DDLParse(ddl)
	if ddlPlan.Action == 0 {
		panic(NewTabletError(FAIL, "DDL is not understood"))
	}

	// Stolen from Begin
	conn := qe.txPool.Get()
	txid, err := qe.activeTxPool.SafeBegin(conn)
	if err != nil {
		conn.Recycle()
		panic(err)
	}
	// Stolen from Commit
	defer qe.activeTxPool.SafeCommit(txid)

	// Stolen from Execute
	conn = qe.activeTxPool.Get(txid)
	defer conn.Recycle()
	result, err := qe.executeSql(logStats, conn, ddl, false)
	if err != nil {
		panic(NewTabletErrorSql(FAIL, err))
	}

	qe.schemaInfo.DropTable(ddlPlan.TableName)
	if ddlPlan.Action != sqlparser.DROP { // CREATE, ALTER, RENAME
		qe.schemaInfo.CreateTable(ddlPlan.NewName)
	}
	return result
}
Exemplo n.º 2
0
// InvalidateForDDL performs schema and rowcache changes for the ddl.
func (qe *QueryEngine) InvalidateForDDL(ddlInvalidate *proto.DDLInvalidate) {
	ddlPlan := sqlparser.DDLParse(ddlInvalidate.DDL)
	if ddlPlan.Action == 0 {
		panic(NewTabletError(FAIL, "DDL is not understood"))
	}
	qe.schemaInfo.DropTable(ddlPlan.TableName)
	if ddlPlan.Action != sqlparser.DROP { // CREATE, ALTER, RENAME
		qe.schemaInfo.CreateTable(ddlPlan.NewName)
	}
}
Exemplo n.º 3
0
func (qe *QueryEngine) InvalidateForDDL(ddlInvalidate *proto.DDLInvalidate) {
	qe.mu.RLock()
	defer qe.mu.RUnlock()

	ddlPlan := sqlparser.DDLParse(ddlInvalidate.DDL)
	if ddlPlan.Action == 0 {
		panic(NewTabletError(FAIL, "DDL is not understood"))
	}
	qe.schemaInfo.DropTable(ddlPlan.TableName)
	if ddlPlan.Action != sqlparser.DROP { // CREATE, ALTER, RENAME
		qe.schemaInfo.CreateTable(ddlPlan.NewName)
	}
	qe.adminCache.Set(ROWCACHE_INVALIDATION_POSITION, 0, 0, []byte(ddlInvalidate.Position))
}