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runaway: Mitigation tidb_runaway_queries flooding (#55664)
ref #54434
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // Copyright 2024 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 runaway | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
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| func TestRecordKey(t *testing.T) { | ||
| // Initialize test data | ||
| key1 := recordKey{ | ||
| ResourceGroupName: "group1", | ||
| SQLDigest: "digest1", | ||
| PlanDigest: "plan1", | ||
| } | ||
| // key2 is identical to key1 | ||
| key2 := recordKey{ | ||
| ResourceGroupName: "group1", | ||
| SQLDigest: "digest1", | ||
| PlanDigest: "plan1", | ||
| } | ||
| key3 := recordKey{ | ||
| ResourceGroupName: "group2", | ||
| } | ||
| // Test Hash method | ||
| hash1 := key1.Hash() | ||
| hash2 := key2.Hash() | ||
| hash3 := key3.Hash() | ||
|
|
||
| assert.Equal(t, hash1, hash2, "Hashes should be equal for identical keys") | ||
| assert.NotEqual(t, hash1, hash3, "Hashes should not be equal for different keys") | ||
|
|
||
| // Test MapKey method | ||
| recordMap = make(map[recordKey]*Record) | ||
| record1 := &Record{ | ||
| ResourceGroupName: "group1", | ||
| SQLDigest: "digest1", | ||
| PlanDigest: "plan1", | ||
| } | ||
| // put key1 into recordMap | ||
| recordMap[key1] = record1 | ||
| assert.Len(t, recordMap, 1, "recordMap should have 1 element") | ||
| assert.Equal(t, "group1", recordMap[key1].ResourceGroupName, "Repeats should not be updated") | ||
| assert.Equal(t, 0, recordMap[key1].Repeats, "Repeats should be incremented") | ||
| // key2 is identical to key1, so we can use key2 to get the record | ||
| assert.NotNil(t, recordMap[key1], "key1 should exist in recordMap") | ||
| assert.NotNil(t, recordMap[key2], "key2 should exist in recordMap") | ||
| assert.Nil(t, recordMap[key3], "key3 should not exist in recordMap") | ||
|
|
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| // put key2 into recordMap and update Repeats | ||
| record2 := &Record{ | ||
| ResourceGroupName: "group1", | ||
| Repeats: 1, | ||
| } | ||
| recordMap[key2] = record2 | ||
| assert.Len(t, recordMap, 1, "recordMap should have 1 element") | ||
| assert.Equal(t, 1, recordMap[key1].Repeats, "Repeats should be updated") | ||
| // change ResourceGroupName of key2 will not affect key1 | ||
| key2.ResourceGroupName = "group2" | ||
| record3 := &Record{ | ||
| ResourceGroupName: "group2", | ||
| } | ||
| recordMap[key2] = record3 | ||
| assert.Len(t, recordMap, 2, "recordMap should have 1 element") | ||
| assert.Equal(t, "group1", recordMap[key1].ResourceGroupName, "Repeats should not be updated") | ||
| assert.Equal(t, "group2", recordMap[key2].ResourceGroupName, "ResourceGroupName should be updated") | ||
| } |
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