planner: Add explain info for InspectionRuleTableExtractor (#16087)

pingcap · Apr 7, 2020 · 38d9711 · 38d9711
1 parent c31e4be
commit 38d9711
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Showing 2 changed files with 19 additions and 1 deletion.
diff --git a/executor/explainfor_test.go b/executor/explainfor_test.go
@@ -119,3 +119,13 @@ func (s *testSuite) TestExplainMetricTable(c *C) {
 	tk.MustQuery("desc select * from information_schema.cluster_log where type in ('high_cpu_1','high_memory_1') and time >= '2019-12-23 16:10:13' and time <= '2019-12-23 16:30:13'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:CLUSTER_LOG start_time:2019-12-23 16:10:13, end_time:2019-12-23 16:30:13, node_types:["high_cpu_1","high_memory_1"]`))
 }
+
+func (s *testSuite) TestInspectionRuleTable(c *C) {
+	tk := testkit.NewTestKitWithInit(c, s.store)
+	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection'")).Check(testkit.Rows(
+		`MemTableScan_5 10000.00 root table:INSPECTION_RULES node_types:["inspection"]`))
+	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection' or type='summary'")).Check(testkit.Rows(
+		`MemTableScan_5 10000.00 root table:INSPECTION_RULES node_types:["inspection","summary"]`))
+	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection' and type='summary'")).Check(testkit.Rows(
+		`MemTableScan_5 10000.00 root table:INSPECTION_RULES skip_request: true`))
+}
diff --git a/planner/core/memtable_predicate_extractor.go b/planner/core/memtable_predicate_extractor.go
@@ -890,7 +890,15 @@ func (e *InspectionRuleTableExtractor) Extract(
 }
 
 func (e *InspectionRuleTableExtractor) explainInfo(p *PhysicalMemTable) string {
-	return ""
+	if e.SkipRequest {
+		return "skip_request: true"
+	}
+
+	r := new(bytes.Buffer)
+	if len(e.Types) > 0 {
+		r.WriteString(fmt.Sprintf("node_types:[%s]", extractStringFromStringSet(e.Types)))
+	}
+	return r.String()
 }
 
 // SlowQueryExtractor is used to extract some predicates of `slow_query`