func TestBadUpdateExpr(t *testing.T) {
var sql string
r := newTestDBRule()
sql = "insert into test1 (id) values (5) on duplicate key update id = 10"
stmt, err := sqlparser.Parse(sql)
if err != nil {
t.Fatal(err.Error())
}
if _, err := r.BuildPlan(stmt); err == nil {
t.Fatal("must err")
}
sql = "update test1 set id = 10 where id = 5"
stmt, err = sqlparser.Parse(sql)
if err != nil {
t.Fatal(err.Error())
}
if _, err := r.BuildPlan(stmt); err == nil {
t.Fatal("must err")
}
}
func (c *ClientConn) handleStmtPrepare(sql string) error {
if c.schema == nil {
return mysql.NewDefaultError(mysql.ER_NO_DB_ERROR)
}
s := new(Stmt)
sql = strings.TrimRight(sql, ";")
var err error
s.s, err = sqlparser.Parse(sql)
if err != nil {
return fmt.Errorf(`parse sql "%s" error`, sql)
}
s.sql = sql
n := c.proxy.GetNode(c.user)
if co, err := n.GetMasterConn(); err != nil {
return fmt.Errorf("prepare error %s", err)
} else {
defer co.Close()
if err = co.UseDB(c.schema.db); err != nil {
return fmt.Errorf("parepre error %s", err)
}
if t, err := co.Prepare(sql); err != nil {
return fmt.Errorf("parepre error %s", err)
} else {
s.params = t.ParamNum()
s.columns = t.ColumnNum()
}
}
s.id = c.stmtId
c.stmtId++
if err = c.writePrepare(s); err != nil {
return err
}
s.ResetParams()
c.stmts[s.id] = s
return nil
}
func checkPlan(t *testing.T, sql string, tableIndexs []int, nodeIndexs []int) {
r := newTestRouter()
stmt, err := sqlparser.Parse(sql)
if err != nil {
t.Fatal(err.Error())
}
plan, err := r.BuildPlan(stmt)
if err != nil {
t.Fatal(err.Error())
}
if isListEqual(plan.RouteTableIndexs, tableIndexs) == false {
err := fmt.Errorf("RouteTableIndexs=%v but tableIndexs=%v",
plan.RouteTableIndexs, tableIndexs)
t.Fatal(err.Error())
}
if isListEqual(plan.RouteNodeIndexs, nodeIndexs) == false {
err := fmt.Errorf("RouteNodeIndexs=%v but nodeIndexs=%v",
plan.RouteNodeIndexs, nodeIndexs)
t.Fatal(err.Error())
}
t.Logf("rewritten_sql=%v", plan.RewrittenSqls)
}
/*处理query语句*/
func (c *ClientConn) handleQuery(sql string) (err error) {
defer func() {
if e := recover(); e != nil {
golog.OutputSql("Error", "err:%v,sql:%s", e, sql)
if err, ok := e.(error); ok {
const size = 4096
buf := make([]byte, size)
buf = buf[:runtime.Stack(buf, false)]
golog.Error("ClientConn", "handleQuery",
err.Error(), 0,
"stack", string(buf), "sql", sql)
}
return
}
}()
sql = strings.TrimRight(sql, ";") //删除sql语句最后的分号
hasHandled, err := c.preHandleShard(sql)
if err != nil {
golog.Error("server", "preHandleShard", err.Error(), 0, "hasHandled", hasHandled)
return err
}
if hasHandled {
return nil
}
var stmt sqlparser.Statement
stmt, err = sqlparser.Parse(sql) //解析sql语句,得到的stmt是一个interface
if err != nil {
golog.Error("server", "parse", err.Error(), 0, "hasHandled", hasHandled, "sql", sql)
return err
}
switch v := stmt.(type) {
case *sqlparser.Select:
return c.handleSelect(v, nil)
case *sqlparser.Insert:
return c.handleExec(stmt, nil)
case *sqlparser.Update:
return c.handleExec(stmt, nil)
case *sqlparser.Delete:
return c.handleExec(stmt, nil)
case *sqlparser.Replace:
return c.handleExec(stmt, nil)
case *sqlparser.Set:
return c.handleSet(v, sql)
case *sqlparser.Begin:
return c.handleBegin()
case *sqlparser.Commit:
return c.handleCommit()
case *sqlparser.Rollback:
return c.handleRollback()
case *sqlparser.Admin:
return c.handleAdmin(v)
case *sqlparser.UseDB:
return c.handleUseDB(v)
default:
return fmt.Errorf("statement %T not support now", stmt)
}
return nil
}