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feat: support rate limit filter (#224)
* feat: support rate limit filter * fix: format error log
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| /* | ||
| * Copyright 2022 CECTC, 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 rate | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
|
|
||
| "github.com/pkg/errors" | ||
| "go.uber.org/ratelimit" | ||
|
|
||
| "github.com/cectc/dbpack/pkg/constant" | ||
| "github.com/cectc/dbpack/pkg/filter" | ||
| "github.com/cectc/dbpack/pkg/log" | ||
| "github.com/cectc/dbpack/pkg/proto" | ||
| "github.com/cectc/dbpack/third_party/parser/ast" | ||
| ) | ||
|
|
||
| const ( | ||
| rateLimiterFilter = "RateLimiterFilter" | ||
| ) | ||
|
|
||
| type _factory struct{} | ||
|
|
||
| func (factory *_factory) NewFilter(config map[string]interface{}) (proto.Filter, error) { | ||
| var ( | ||
| err error | ||
| content []byte | ||
| conf *LimiterFilterConfig | ||
| insertLimiter ratelimit.Limiter | ||
| updateLimiter ratelimit.Limiter | ||
| deleteLimiter ratelimit.Limiter | ||
| selectLimiter ratelimit.Limiter | ||
| ) | ||
| if content, err = json.Marshal(config); err != nil { | ||
| return nil, errors.Wrap(err, "marshal rate limit filter config failed.") | ||
| } | ||
| if err = json.Unmarshal(content, &conf); err != nil { | ||
| log.Errorf("unmarshal rate limit filter failed, %v", err) | ||
| return nil, err | ||
| } | ||
| if conf.InsertLimit != 0 { | ||
| insertLimiter = ratelimit.New(conf.InsertLimit) | ||
| } | ||
| if conf.UpdateLimit != 0 { | ||
| updateLimiter = ratelimit.New(conf.UpdateLimit) | ||
| } | ||
| if conf.DeleteLimit != 0 { | ||
| deleteLimiter = ratelimit.New(conf.DeleteLimit) | ||
| } | ||
| if conf.SelectLimit != 0 { | ||
| selectLimiter = ratelimit.New(conf.SelectLimit) | ||
| } | ||
| return &_filter{ | ||
| insertLimiter: insertLimiter, | ||
| updateLimiter: updateLimiter, | ||
| deleteLimiter: deleteLimiter, | ||
| selectLimiter: selectLimiter, | ||
| }, nil | ||
| } | ||
|
|
||
| type LimiterFilterConfig struct { | ||
| InsertLimit int `yaml:"insert_limit" json:"insert_limit"` | ||
| UpdateLimit int `yaml:"update_limit" json:"update_limit"` | ||
| DeleteLimit int `yaml:"delete_limit" json:"delete_limit"` | ||
| SelectLimit int `yaml:"select_limit" json:"select_limit"` | ||
| } | ||
|
|
||
| type _filter struct { | ||
| insertLimiter ratelimit.Limiter | ||
| updateLimiter ratelimit.Limiter | ||
| deleteLimiter ratelimit.Limiter | ||
| selectLimiter ratelimit.Limiter | ||
| } | ||
|
|
||
| func (f *_filter) GetKind() string { | ||
| return rateLimiterFilter | ||
| } | ||
|
|
||
| func (f *_filter) PreHandle(ctx context.Context) error { | ||
| commandType := proto.CommandType(ctx) | ||
| switch commandType { | ||
| case constant.ComQuery: | ||
| stmt := proto.QueryStmt(ctx) | ||
| switch stmt.(type) { | ||
| case *ast.InsertStmt: | ||
| if f.insertLimiter != nil { | ||
| f.insertLimiter.Take() | ||
| } | ||
| case *ast.UpdateStmt: | ||
| if f.updateLimiter != nil { | ||
| f.updateLimiter.Take() | ||
| } | ||
| case *ast.DeleteStmt: | ||
| if f.deleteLimiter != nil { | ||
| f.deleteLimiter.Take() | ||
| } | ||
| case *ast.SelectStmt: | ||
| if f.selectLimiter != nil { | ||
| f.selectLimiter.Take() | ||
| } | ||
| default: | ||
| return nil | ||
| } | ||
|
|
||
| case constant.ComStmtExecute: | ||
| stmt := proto.PrepareStmt(ctx) | ||
| if stmt == nil { | ||
| return errors.New("prepare stmt should not be nil") | ||
| } | ||
| switch stmt.StmtNode.(type) { | ||
| case *ast.InsertStmt: | ||
| if f.insertLimiter != nil { | ||
| f.insertLimiter.Take() | ||
| } | ||
| case *ast.UpdateStmt: | ||
| if f.updateLimiter != nil { | ||
| f.updateLimiter.Take() | ||
| } | ||
| case *ast.DeleteStmt: | ||
| if f.deleteLimiter != nil { | ||
| f.deleteLimiter.Take() | ||
| } | ||
| case *ast.SelectStmt: | ||
| if f.selectLimiter != nil { | ||
| f.selectLimiter.Take() | ||
| } | ||
| default: | ||
| return nil | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func init() { | ||
| filter.RegistryFilterFactory(rateLimiterFilter, &_factory{}) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| * Copyright 2022 CECTC, 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 rate | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
|
|
||
| "github.com/cectc/dbpack/pkg/constant" | ||
| "github.com/cectc/dbpack/pkg/proto" | ||
| "github.com/cectc/dbpack/pkg/visitor" | ||
| "github.com/cectc/dbpack/third_party/parser" | ||
| ) | ||
|
|
||
| func TestRateLimiter(t *testing.T) { | ||
| testCases := []string{ | ||
| "insert_limit", | ||
| "update_limit", | ||
| "delete_limit", | ||
| "select_limit", | ||
| } | ||
| testSQLs := []string{ | ||
| "insert into student (id, name, age) values (1, 'scott', 28)", | ||
| "update student set age = 30 where id = 1", | ||
| "delete from student where id = 1", | ||
| "select id, name, age from student where id = 1", | ||
| } | ||
| for _, tc := range testCases { | ||
| for _, sql := range testSQLs { | ||
| t.Run(strings.Join([]string{tc, sql}, "_"), func(t *testing.T) { | ||
| p := parser.New() | ||
| stmt, err := p.ParseOneStmt(sql, "", "") | ||
| assert.Nil(t, err) | ||
| stmt.Accept(&visitor.ParamVisitor{}) | ||
|
|
||
| ctx := proto.WithCommandType(context.Background(), constant.ComQuery) | ||
| ctx = proto.WithQueryStmt(ctx, stmt) | ||
|
|
||
| filter, err := (&_factory{}).NewFilter(map[string]interface{}{ | ||
| tc: 1, | ||
| }) | ||
| assert.Nil(t, err) | ||
| f := filter.(proto.DBPreFilter) | ||
|
|
||
| for i := 0; i < 10; i++ { | ||
| err := f.PreHandle(ctx) | ||
| assert.Nil(t, err) | ||
| t.Log(time.Now()) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| testSQLs = []string{ | ||
| "insert into student (id, name, age) values (?, ?, ?)", | ||
| "update student set age = ? where id = ?", | ||
| "delete from student where id = ?", | ||
| "select id, name, age from student where id = ?", | ||
| } | ||
| for _, tc := range testCases { | ||
| for _, sql := range testSQLs { | ||
| t.Run(strings.Join([]string{tc, sql}, "_"), func(t *testing.T) { | ||
| p := parser.New() | ||
| stmt, err := p.ParseOneStmt(sql, "", "") | ||
| assert.Nil(t, err) | ||
| stmt.Accept(&visitor.ParamVisitor{}) | ||
|
|
||
| protoStmt := &proto.Stmt{StmtNode: stmt} | ||
| ctx := proto.WithCommandType(context.Background(), constant.ComStmtExecute) | ||
| ctx = proto.WithPrepareStmt(ctx, protoStmt) | ||
|
|
||
| filter, err := (&_factory{}).NewFilter(map[string]interface{}{ | ||
| tc: 1, | ||
| }) | ||
| assert.Nil(t, err) | ||
| f := filter.(proto.DBPreFilter) | ||
|
|
||
| for i := 0; i < 10; i++ { | ||
| err := f.PreHandle(ctx) | ||
| assert.Nil(t, err) | ||
| t.Log(time.Now()) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
| } |