// Apply executes a set of sqlite statements, within a transaction. All statements
// will take effect, or none.
func (c *TransactionExecuteCommandSet) Apply(server raft.Server) (interface{}, error) {
log.Trace("Applying TransactionExecuteCommandSet of size %d", len(c.Stmts))
commitSuccess := false
db := server.Context().(*db.DB)
defer func() {
if !commitSuccess {
err := db.RollbackTransaction()
if err != nil {
log.Error("Failed to rollback transaction: %s", err.Error)
}
}
}()
err := db.StartTransaction()
if err != nil {
log.Error("Failed to start transaction:", err.Error())
return nil, err
}
for i := range c.Stmts {
err = db.Execute(c.Stmts[i])
if err != nil {
log.Error("Failed to execute statement within transaction", err.Error())
return nil, err
}
}
err = db.CommitTransaction()
if err != nil {
log.Error("Failed to commit transaction:", err.Error())
return nil, err
} else {
commitSuccess = true
}
return nil, nil
}
// Apply executes an sqlite statement.
func (c *ExecuteCommand) Apply(server raft.Server) (interface{}, error) {
log.Trace("Applying ExecuteCommand: '%s'", c.Stmt)
db := server.Context().(*db.DB)
return nil, db.Execute(c.Stmt)
}