111 lines
4.2 KiB
Go
111 lines
4.2 KiB
Go
// Copyright 2025 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package workloadlearning_test
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import (
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"context"
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"testing"
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"time"
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"github.com/pingcap/tidb/pkg/parser/ast"
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"github.com/pingcap/tidb/pkg/testkit"
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"github.com/pingcap/tidb/pkg/workloadlearning"
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"github.com/stretchr/testify/require"
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)
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func TestSaveReadTableCostMetrics(t *testing.T) {
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store, dom := testkit.CreateMockStoreAndDomain(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec(`use test`)
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tk.MustExec("create table test (a int, b int, index idx(a))")
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// mock a table cost metrics
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readTableCostMetrics := &workloadlearning.TableReadCostMetrics{
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DbName: ast.CIStr{O: "test", L: "test"},
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TableName: ast.CIStr{O: "test", L: "test"},
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TableScanTime: time.Duration(10),
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TableMemUsage: 10,
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ReadFrequency: 10,
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TableReadCost: 1.0,
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}
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tableCostMetrics := map[int64]*workloadlearning.TableReadCostMetrics{
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1: readTableCostMetrics,
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}
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handle := workloadlearning.NewWorkloadLearningHandle(dom.SysSessionPool())
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handle.SaveTableReadCostMetrics(tableCostMetrics, time.Now(), time.Now())
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// check the result
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result := tk.MustQuery("select * from mysql.tidb_workload_values").Rows()
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require.Equal(t, 1, len(result))
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}
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func TestAccumulateMetricsGroupByTableID(t *testing.T) {
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store, dom := testkit.CreateMockStoreAndDomain(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec(`use test`)
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tk.MustExec("create table test1 (a int, b int, index idx(a))")
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tk.MustExec("create table test2 (a int, b int, index idx(b))")
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// mock a current record cost metrics
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currentRecordTest1Metric := &workloadlearning.TableReadCostMetrics{
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DbName: ast.CIStr{O: "test", L: "test"},
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TableName: ast.CIStr{O: "test1", L: "test1"},
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TableScanTime: time.Duration(10),
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TableMemUsage: 10,
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ReadFrequency: 0,
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TableReadCost: 0.0,
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}
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currentRecordTest2Metric := &workloadlearning.TableReadCostMetrics{
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DbName: ast.CIStr{O: "test", L: "test"},
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TableName: ast.CIStr{O: "test2", L: "test2"},
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TableScanTime: time.Duration(10),
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TableMemUsage: 10,
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ReadFrequency: 0,
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TableReadCost: 0.0,
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}
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currentRecordMetrics := [](*workloadlearning.TableReadCostMetrics){
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currentRecordTest1Metric,
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currentRecordTest2Metric,
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}
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// mock previous metrics
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previousRecordTest1Metric := &workloadlearning.TableReadCostMetrics{
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DbName: ast.CIStr{O: "test", L: "test"},
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TableName: ast.CIStr{O: "test1", L: "test1"},
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TableScanTime: time.Duration(10),
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TableMemUsage: 10,
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ReadFrequency: 1,
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TableReadCost: 0.0,
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}
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tblInfo1, err := dom.InfoSchema().TableByName(context.Background(), ast.NewCIStr("test"), ast.NewCIStr("test1"))
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require.NoError(t, err)
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previousMetrics := map[int64]*workloadlearning.TableReadCostMetrics{
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tblInfo1.Meta().ID: previousRecordTest1Metric,
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}
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// accumulate metrics
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workloadlearning.AccumulateMetricsGroupByTableID(context.Background(), currentRecordMetrics, 2, previousMetrics, dom.InfoSchema())
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// check the result
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require.Equal(t, 2, len(previousMetrics))
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require.Equal(t, int64(3), previousMetrics[tblInfo1.Meta().ID].ReadFrequency)
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require.Equal(t, time.Duration(30), previousMetrics[tblInfo1.Meta().ID].TableScanTime)
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require.Equal(t, int64(30), previousMetrics[tblInfo1.Meta().ID].TableMemUsage)
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require.Equal(t, 0.0, previousMetrics[tblInfo1.Meta().ID].TableReadCost)
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tblInfo2, err := dom.InfoSchema().TableByName(context.Background(), ast.NewCIStr("test"), ast.NewCIStr("test2"))
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require.NoError(t, err)
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require.Equal(t, int64(2), previousMetrics[tblInfo2.Meta().ID].ReadFrequency)
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require.Equal(t, time.Duration(20), previousMetrics[tblInfo2.Meta().ID].TableScanTime)
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require.Equal(t, int64(20), previousMetrics[tblInfo2.Meta().ID].TableMemUsage)
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require.Equal(t, 0.0, previousMetrics[tblInfo2.Meta().ID].TableReadCost)
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}
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