188 lines
6.4 KiB
Go
188 lines
6.4 KiB
Go
// Copyright 2022 PingCAP, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package bindinfo
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/pingcap/tidb/pkg/parser"
|
|
"github.com/pingcap/tidb/pkg/parser/ast"
|
|
"github.com/pingcap/tidb/pkg/parser/format"
|
|
"github.com/pingcap/tidb/pkg/sessionctx/vardef"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func bindingNoDBDigest(t *testing.T, b *Binding) string {
|
|
p := parser.New()
|
|
stmt, err := p.ParseOneStmt(b.BindSQL, b.Charset, b.Collation)
|
|
require.NoError(t, err)
|
|
_, noDBDigest := NormalizeStmtForBinding(stmt, "", true)
|
|
return noDBDigest
|
|
}
|
|
|
|
func TestCrossDBBindingCache(t *testing.T) {
|
|
fbc := newBindCache().(*bindingCache)
|
|
b1 := &Binding{BindSQL: "SELECT * FROM db1.t1", SQLDigest: "b1"}
|
|
fDigest1 := bindingNoDBDigest(t, b1)
|
|
b2 := &Binding{BindSQL: "SELECT * FROM db2.t1", SQLDigest: "b2"}
|
|
b3 := &Binding{BindSQL: "SELECT * FROM db2.t3", SQLDigest: "b3"}
|
|
fDigest3 := bindingNoDBDigest(t, b3)
|
|
|
|
// add 3 bindings and b1 and b2 have the same noDBDigest
|
|
require.NoError(t, fbc.SetBinding(b1.SQLDigest, b1))
|
|
require.NoError(t, fbc.SetBinding(b2.SQLDigest, b2))
|
|
require.NoError(t, fbc.SetBinding(b3.SQLDigest, b3))
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).noDBDigest2SQLDigest), 2) // b1 and b2 have the same noDBDigest
|
|
require.Equal(t, len(fbc.digestBiMap.NoDBDigest2SQLDigest(fDigest1)), 2)
|
|
require.Equal(t, len(fbc.digestBiMap.NoDBDigest2SQLDigest(fDigest3)), 1)
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest), 3)
|
|
_, ok := fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b1.SQLDigest]
|
|
require.True(t, ok)
|
|
_, ok = fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b2.SQLDigest]
|
|
require.True(t, ok)
|
|
_, ok = fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b3.SQLDigest]
|
|
require.True(t, ok)
|
|
|
|
// remove b2
|
|
fbc.RemoveBinding(b2.SQLDigest)
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).noDBDigest2SQLDigest), 2)
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).noDBDigest2SQLDigest[fDigest1]), 1)
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).noDBDigest2SQLDigest[fDigest3]), 1)
|
|
require.Equal(t, len(fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest), 2)
|
|
_, ok = fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b1.SQLDigest]
|
|
require.True(t, ok)
|
|
_, ok = fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b2.SQLDigest]
|
|
require.False(t, ok) // can't find b2 now
|
|
_, ok = fbc.digestBiMap.(*digestBiMapImpl).sqlDigest2noDBDigest[b3.SQLDigest]
|
|
require.True(t, ok)
|
|
}
|
|
|
|
func TestDuplicatedBinding(t *testing.T) {
|
|
// 3 bindings with the same noDBDigest
|
|
bindingDB1 := &Binding{BindSQL: "SELECT * FROM db1.t1"}
|
|
bindingDB2 := &Binding{BindSQL: "SELECT * FROM db2.t1"}
|
|
bindingDB3 := &Binding{BindSQL: "SELECT * FROM db3.t1"}
|
|
c := newBindCache()
|
|
require.Nil(t, c.SetBinding("db1", bindingDB1))
|
|
require.Nil(t, c.SetBinding("db2", bindingDB2))
|
|
require.Nil(t, c.SetBinding("db3", bindingDB3))
|
|
|
|
digestMap := c.(*bindingCache).digestBiMap.(*digestBiMapImpl)
|
|
var noDBDigest string
|
|
for digest := range digestMap.noDBDigest2SQLDigest {
|
|
noDBDigest = digest
|
|
}
|
|
require.True(t, noDBDigest != "")
|
|
require.Equal(t, 3, len(digestMap.noDBDigest2SQLDigest[noDBDigest]))
|
|
require.Equal(t, 3, len(digestMap.sqlDigest2noDBDigest))
|
|
|
|
// put 3 duplicated bindings again
|
|
require.Nil(t, c.SetBinding("db1", bindingDB1))
|
|
require.Nil(t, c.SetBinding("db2", bindingDB2))
|
|
require.Nil(t, c.SetBinding("db3", bindingDB3))
|
|
require.True(t, noDBDigest != "")
|
|
require.Equal(t, 3, len(digestMap.noDBDigest2SQLDigest[noDBDigest]))
|
|
require.Equal(t, 3, len(digestMap.sqlDigest2noDBDigest))
|
|
}
|
|
|
|
func TestBindCache(t *testing.T) {
|
|
binding := &Binding{BindSQL: "SELECT * FROM t1"}
|
|
kvSize := int(binding.size())
|
|
defer func(v int64) {
|
|
vardef.MemQuotaBindingCache.Store(v)
|
|
}(vardef.MemQuotaBindingCache.Load())
|
|
vardef.MemQuotaBindingCache.Store(int64(kvSize*3) - 1)
|
|
bindCache := newBindCache()
|
|
defer bindCache.Close()
|
|
|
|
err := bindCache.SetBinding("digest1", binding)
|
|
require.Nil(t, err)
|
|
require.NotNil(t, bindCache.GetBinding("digest1"))
|
|
|
|
err = bindCache.SetBinding("digest2", binding)
|
|
require.Nil(t, err)
|
|
require.NotNil(t, bindCache.GetBinding("digest2"))
|
|
|
|
err = bindCache.SetBinding("digest3", binding)
|
|
require.Nil(t, err)
|
|
require.NotNil(t, bindCache.GetBinding("digest3"))
|
|
|
|
require.Eventually(t, func() bool {
|
|
hit := 0
|
|
for _, digest := range []string{"digest1", "digest2", "digest3"} {
|
|
if bindCache.GetBinding(digest) != nil {
|
|
hit++
|
|
}
|
|
}
|
|
return hit == 2
|
|
}, time.Second*5, time.Millisecond*100)
|
|
}
|
|
|
|
func TestExtractTableName(t *testing.T) {
|
|
tc := []struct {
|
|
sql string
|
|
tables []string
|
|
}{
|
|
{
|
|
"select /*+ HASH_JOIN(t1, t2) */ * from t1 t1 join t1 t2 on t1.a=t2.a where t1.b is not null;",
|
|
[]string{"t1", "t1"},
|
|
},
|
|
{
|
|
"select * from t",
|
|
[]string{"t"},
|
|
},
|
|
{
|
|
"select * from t1, t2, t3;",
|
|
[]string{"t1", "t2", "t3"},
|
|
},
|
|
{
|
|
"select * from t1 where t1.a > (select max(a) from t2);",
|
|
[]string{"t1", "t2"},
|
|
},
|
|
{
|
|
"select * from t1 where t1.a > (select max(a) from t2 where t2.a > (select max(a) from t3));",
|
|
[]string{"t1", "t2", "t3"},
|
|
},
|
|
{
|
|
"select a,b,c,d,* from t1 where t1.a > (select max(a) from t2 where t2.a > (select max(a) from t3));",
|
|
[]string{"t1", "t2", "t3"},
|
|
},
|
|
}
|
|
for _, tt := range tc {
|
|
stmt, err := parser.New().ParseOneStmt(tt.sql, "", "")
|
|
require.NoErrorf(t, err, "sql: %s", tt.sql)
|
|
rs := CollectTableNames(stmt)
|
|
result, err := getTableName(rs)
|
|
require.NoErrorf(t, err, "sql: %s", tt.sql)
|
|
require.Equalf(t, tt.tables, result, "sql: %s", tt.sql)
|
|
}
|
|
}
|
|
|
|
func getTableName(n []*ast.TableName) ([]string, error) {
|
|
result := make([]string, 0, len(n))
|
|
for _, v := range n {
|
|
var sb strings.Builder
|
|
restoreFlags := format.RestoreKeyWordLowercase
|
|
restoreCtx := format.NewRestoreCtx(restoreFlags, &sb)
|
|
if err := v.Restore(restoreCtx); err != nil {
|
|
return nil, err
|
|
}
|
|
result = append(result, sb.String())
|
|
}
|
|
return result, nil
|
|
}
|