diff --git a/xttbinlog/build.bat b/xttbinlog/build.bat new file mode 100644 index 0000000..0f1ce86 --- /dev/null +++ b/xttbinlog/build.bat @@ -0,0 +1,5 @@ +rem 编译为 Linux 64 位可执行文件 +set GOOS=linux +set GOARCH=amd64 +set CGO_ENABLED=0 +go build -o xttbinlog main.go \ No newline at end of file diff --git a/xttbinlog/config.yaml b/xttbinlog/config.yaml new file mode 100644 index 0000000..eaad4e8 --- /dev/null +++ b/xttbinlog/config.yaml @@ -0,0 +1,17 @@ +mysql: + addr: "127.0.0.1:3306" + user: "canal" + password: "canal_password" + database: "test" + +sync: + tables: + - "user" + - "order" + - "product" + batch_size: 100 + workers: 4 + +# storage: +# type: "redis" +# redis_url: "redis://localhost:6379/0" \ No newline at end of file diff --git a/xttbinlog/config/config.go b/xttbinlog/config/config.go new file mode 100644 index 0000000..366b017 --- /dev/null +++ b/xttbinlog/config/config.go @@ -0,0 +1,39 @@ +package config + +import "github.com/go-mysql-org/go-mysql/canal" + +type Config struct { + MySQL struct { + Addr string `yaml:"addr"` + User string `yaml:"user"` + Password string `yaml:"password"` + Database string `yaml:"database"` + } `yaml:"mysql"` + + Sync struct { + Tables []string `yaml:"tables"` + BatchSize int `yaml:"batch_size"` + Workers int `yaml:"workers"` + } `yaml:"sync"` + + Storage struct { + Type string `yaml:"type"` // memory, redis, file + FilePath string `yaml:"file_path"` + RedisURL string `yaml:"redis_url"` + } `yaml:"storage"` +} + +func (c *Config) ToCanalConfig() *canal.Config { + cfg := canal.NewDefaultConfig() + cfg.Addr = c.MySQL.Addr + cfg.User = c.MySQL.User + cfg.Password = c.MySQL.Password + cfg.Dump.ExecutionPath = "" + + // 只监听指定数据库 + if c.MySQL.Database != "" { + cfg.IncludeTableRegex = []string{c.MySQL.Database + "\\..*"} + } + + return cfg +} diff --git a/xttbinlog/go.mod b/xttbinlog/go.mod new file mode 100644 index 0000000..9f0b8e5 --- /dev/null +++ b/xttbinlog/go.mod @@ -0,0 +1,29 @@ +module xttbinlog + +go 1.24.6 + +require ( + github.com/go-mysql-org/go-mysql v1.13.0 + github.com/go-redis/redis/v8 v8.11.0 + gopkg.in/yaml.v2 v2.4.0 +) + +require ( + filippo.io/edwards25519 v1.1.0 // indirect + github.com/BurntSushi/toml v1.3.2 // indirect + github.com/cespare/xxhash/v2 v2.1.1 // indirect + github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/google/uuid v1.3.0 // indirect + github.com/klauspost/compress v1.17.8 // indirect + github.com/pingcap/errors v0.11.5-0.20250318082626-8f80e5cb09ec // indirect + github.com/pingcap/failpoint v0.0.0-20240528011301-b51a646c7c86 // indirect + github.com/pingcap/log v1.1.1-0.20241212030209-7e3ff8601a2a // indirect + github.com/pingcap/tidb/pkg/parser v0.0.0-20250421232622-526b2c79173d // indirect + github.com/shopspring/decimal v1.2.0 // indirect + go.uber.org/atomic v1.11.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + go.uber.org/zap v1.27.0 // indirect + golang.org/x/text v0.24.0 // indirect + gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect +) diff --git a/xttbinlog/go.sum b/xttbinlog/go.sum new file mode 100644 index 0000000..ac99d4d --- /dev/null +++ b/xttbinlog/go.sum @@ -0,0 +1,158 @@ +filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA= +filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4= +github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= +github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/benbjohnson/clock v1.1.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA= +github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 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`json:"table"` + Timestamp time.Time `json:"timestamp"` + Data []interface{} `json:"data"` + OldData []interface{} `json:"old_data,omitempty"` +} + +type EventHandler struct { + canal.DummyEventHandler + eventChan chan *DataEvent + batchSize int + workers int + wg sync.WaitGroup + ctx context.Context + cancel context.CancelFunc +} + +func NewEventHandler(batchSize, workers int) *EventHandler { + ctx, cancel := context.WithCancel(context.Background()) + handler := &EventHandler{ + eventChan: make(chan *DataEvent, 1000), + batchSize: batchSize, + workers: workers, + ctx: ctx, + cancel: cancel, + } + + handler.startWorkers() + return handler +} + +func (h *EventHandler) startWorkers() { + for i := 0; i < h.workers; i++ { + h.wg.Add(1) + go h.worker(i) + } +} + +func (h *EventHandler) worker(id int) { + defer h.wg.Done() + + var batch []*DataEvent + batchTimer := time.NewTimer(100 * time.Millisecond) + defer batchTimer.Stop() + + for { + select { + case event, ok := <-h.eventChan: + if !ok { + // 通道关闭，处理剩余数据 + if len(batch) > 0 { + h.processBatch(batch) + } + return + } + + batch = append(batch, event) + + if len(batch) >= h.batchSize { + h.processBatch(batch) + batch = nil + batchTimer.Reset(100 * time.Millisecond) + } + + case <-batchTimer.C: + if len(batch) > 0 { + h.processBatch(batch) + batch = nil + } + batchTimer.Reset(100 * time.Millisecond) + + case <-h.ctx.Done(): + if len(batch) > 0 { + h.processBatch(batch) + } + return + } + } +} + +func (h *EventHandler) processBatch(events []*DataEvent) { + // 这里实现数据同步逻辑 + // 可以同步到其他数据库、消息队列、ES等 + + log.Printf("处理批次: %d 个事件", len(events)) + for _, event := range events { + // 示例：打印事件信息 + log.Printf("同步事件: %s.%s %s", event.Schema, event.Table, event.Action) + + // 实际应用中，这里可以同步到： + // 1. 其他MySQL数据库 + // 2. Elasticsearch + // 3. Redis缓存 + // 4. Kafka消息队列 + // 5. 其他数据存储 + } +} + +func (h *EventHandler) OnRow(e *canal.RowsEvent) error { + var event *DataEvent + + switch e.Action { + case "insert": + for _, row := range e.Rows { + event = &DataEvent{ + Action: "insert", + Schema: e.Table.Schema, + Table: e.Table.Name, + Timestamp: time.Now(), + Data: row, + } + h.eventChan <- event + } + + case "update": + for i := 0; i < len(e.Rows); i += 2 { + event = &DataEvent{ + Action: "update", + Schema: e.Table.Schema, + Table: e.Table.Name, + Timestamp: time.Now(), + OldData: e.Rows[i], + Data: e.Rows[i+1], + } + h.eventChan <- event + } + + case "delete": + for _, row := range e.Rows { + event = &DataEvent{ + Action: "delete", + Schema: e.Table.Schema, + Table: e.Table.Name, + Timestamp: time.Now(), + Data: row, + } + h.eventChan <- event + } + } + + return nil +} + +func (h *EventHandler) OnPosSynced(pos mysql.Position, force bool) error { + log.Printf("位置已同步: %s, force: %t", pos, force) + return nil +} + +func (h *EventHandler) Close() { + h.cancel() + close(h.eventChan) + h.wg.Wait() +} diff --git a/xttbinlog/main.go b/xttbinlog/main.go new file mode 100644 index 0000000..f206d5f --- /dev/null +++ b/xttbinlog/main.go @@ -0,0 +1,62 @@ +package main + +import ( + "log" + "os" + "os/signal" + "syscall" + + "xttbinlog/config" + "xttbinlog/syncer" + + "gopkg.in/yaml.v2" +) + +func main() { + // 读取配置 + cfg, err := loadConfig("config.yaml") + if err != nil { + log.Fatalf("加载配置失败: %v", err) + } + + // 创建数据同步器 + syncer, err := syncer.NewDataSyncer(cfg) + if err != nil { + log.Fatalf("创建同步器失败: %v", err) + } + + // 处理信号 + setupSignalHandler(syncer) + + // 启动同步 + if err := syncer.Start(); err != nil { + log.Fatalf("启动同步失败: %v", err) + } +} + +func loadConfig(filename string) (*config.Config, error) { + data, err := os.ReadFile(filename) + if err != nil { + return nil, err + } + + var cfg config.Config + err = yaml.Unmarshal(data, &cfg) + if err != nil { + return nil, err + } + + return &cfg, nil +} + +func setupSignalHandler(syncer *syncer.DataSyncer) { + sigChan := make(chan os.Signal, 1) + signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM) + + go func() { + sig := <-sigChan + log.Printf("接收到信号: %v", sig) + syncer.Stop() + os.Exit(0) + }() +} diff --git a/xttbinlog/storage/position_storage.go b/xttbinlog/storage/position_storage.go new file mode 100644 index 0000000..ec49c91 --- /dev/null +++ b/xttbinlog/storage/position_storage.go @@ -0,0 +1,93 @@ +package storage + +import ( + "encoding/json" + "os" + "sync" + + "github.com/go-mysql-org/go-mysql/mysql" + "github.com/go-redis/redis/v8" +) + +type PositionStorage interface { + Save(position mysql.Position) error + Load() (mysql.Position, error) +} + +// 文件存储 +type FileStorage struct { + filePath string + mutex sync.RWMutex +} + +func NewFileStorage(filePath string) *FileStorage { + return &FileStorage{filePath: filePath} +} + +func (fs *FileStorage) Save(pos mysql.Position) error { + fs.mutex.Lock() + defer fs.mutex.Unlock() + + data, err := json.Marshal(pos) + if err != nil { + return err + } + + return os.WriteFile(fs.filePath, data, 0644) +} + +func (fs *FileStorage) Load() (mysql.Position, error) { + fs.mutex.RLock() + defer fs.mutex.RUnlock() + + data, err := os.ReadFile(fs.filePath) + if err != nil { + if os.IsNotExist(err) { + return mysql.Position{}, nil + } + return mysql.Position{}, err + } + + var pos mysql.Position + err = json.Unmarshal(data, &pos) + return pos, err +} + +// Redis存储 +type RedisStorage struct { + client *redis.Client + key string +} + +func NewRedisStorage(redisURL, key string) (*RedisStorage, error) { + opt, err := redis.ParseURL(redisURL) + if err != nil { + return nil, err + } + + client := redis.NewClient(opt) + return &RedisStorage{client: client, key: key}, nil +} + +func (rs *RedisStorage) Save(pos mysql.Position) error { + data, err := json.Marshal(pos) + if err != nil { + return err + } + + return rs.client.Set(rs.client.Context(), rs.key, data, 0).Err() +} + +func (rs *RedisStorage) Load() (mysql.Position, error) { + data, err := rs.client.Get(rs.client.Context(), rs.key).Bytes() + if err == redis.Nil { + return mysql.Position{}, nil + } + if err != nil { + return mysql.Position{}, err + } + + var pos mysql.Position + err = json.Unmarshal(data, &pos) + return pos, err +} diff --git a/xttbinlog/syncer/data_syncer.go b/xttbinlog/syncer/data_syncer.go new file mode 100644 index 0000000..e07ea38 --- /dev/null +++ b/xttbinlog/syncer/data_syncer.go @@ -0,0 +1,112 @@ +package syncer + +import ( + "log" + "time" + + "github.com/go-mysql-org/go-mysql/canal" + "github.com/go-mysql-org/go-mysql/mysql" + + "xttbinlog/config" + "xttbinlog/handler" + "xttbinlog/storage" +) + +type DataSyncer struct { + canal *canal.Canal + handler *handler.EventHandler + storage storage.PositionStorage + config *config.Config +} + +func NewDataSyncer(cfg *config.Config) (*DataSyncer, error) { + // 创建canal实例 + c, err := canal.NewCanal(cfg.ToCanalConfig()) + if err != nil { + return nil, err + } + + // 创建位置存储器 + var posStorage storage.PositionStorage + switch cfg.Storage.Type { + case "redis": + posStorage, err = storage.NewRedisStorage(cfg.Storage.RedisURL, "binlog_position") + if err != nil { + return nil, err + } + case "file": + posStorage = storage.NewFileStorage(cfg.Storage.FilePath) + default: + posStorage = storage.NewFileStorage("./binlog.position") + } + + // 创建事件处理器 + eventHandler := handler.NewEventHandler(cfg.Sync.BatchSize, cfg.Sync.Workers) + + syncer := &DataSyncer{ + canal: c, + handler: eventHandler, + storage: posStorage, + config: cfg, + } + + c.SetEventHandler(eventHandler) + return syncer, nil +} + +func (ds *DataSyncer) Start() error { + // 加载保存的位置 + savedPos, err := ds.storage.Load() + if err != nil { + return err + } + + var startPos mysql.Position + + if savedPos.Name != "" { + log.Printf("从保存的位置开始: %s", savedPos) + startPos = savedPos + } else { + // 第一次启动，从当前位置开始 + pos, err := ds.canal.GetMasterPos() + if err != nil { + return err + } + startPos = pos + log.Printf("第一次启动，从当前位置开始: %s", startPos) + } + + // 启动同步 + go ds.positionSaver() + + log.Printf("开始数据同步...") + return ds.canal.RunFrom(startPos) +} + +func (ds *DataSyncer) positionSaver() { + ticker := time.NewTicker(5 * time.Second) + defer ticker.Stop() + + for { + select { + case <-ticker.C: + pos := ds.canal.SyncedPosition() + if err := ds.storage.Save(pos); err != nil { + log.Printf("保存位置失败: %v", err) + } + } + } +} + +func (ds *DataSyncer) Stop() { + log.Printf("停止数据同步...") + + // 保存最后的位置 + pos := ds.canal.SyncedPosition() + if err := ds.storage.Save(pos); err != nil { + log.Printf("保存最后位置失败: %v", err) + } + + ds.handler.Close() + ds.canal.Close() +}