mirror of
https://gitee.com/dromara/mayfly-go
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445 lines
13 KiB
Go
445 lines
13 KiB
Go
package application
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"mayfly-go/internal/db/dbm/dbi"
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"mayfly-go/internal/db/domain/entity"
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"mayfly-go/internal/db/domain/repository"
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"mayfly-go/pkg/base"
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"mayfly-go/pkg/contextx"
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"mayfly-go/pkg/errorx"
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"mayfly-go/pkg/logx"
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"mayfly-go/pkg/model"
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"mayfly-go/pkg/scheduler"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/google/uuid"
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)
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type DataSyncTask interface {
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base.App[*entity.DataSyncTask]
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// GetPageList 分页获取数据库实例
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GetPageList(condition *entity.DataSyncTaskQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) (*model.PageResult[any], error)
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Save(ctx context.Context, instanceEntity *entity.DataSyncTask) error
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Delete(ctx context.Context, id uint64) error
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InitCronJob()
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AddCronJob(ctx context.Context, taskEntity *entity.DataSyncTask)
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RemoveCronJobById(taskId uint64)
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RunCronJob(ctx context.Context, id uint64) error
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GetTaskLogList(condition *entity.DataSyncLogQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) (*model.PageResult[any], error)
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}
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type dataSyncAppImpl struct {
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base.AppImpl[*entity.DataSyncTask, repository.DataSyncTask]
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dbDataSyncLogRepo repository.DataSyncLog `inject:"DbDataSyncLogRepo"`
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dbApp Db `inject:"DbApp"`
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}
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var (
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dateTimeReg = regexp.MustCompile(`^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$`)
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whereReg = regexp.MustCompile(`(?i)where`)
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)
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func (app *dataSyncAppImpl) InjectDbDataSyncTaskRepo(repo repository.DataSyncTask) {
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app.Repo = repo
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}
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func (app *dataSyncAppImpl) GetPageList(condition *entity.DataSyncTaskQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) (*model.PageResult[any], error) {
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return app.GetRepo().GetTaskList(condition, pageParam, toEntity, orderBy...)
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}
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func (app *dataSyncAppImpl) Save(ctx context.Context, taskEntity *entity.DataSyncTask) error {
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var err error
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if taskEntity.Id == 0 {
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// 新建时生成key
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taskEntity.TaskKey = uuid.New().String()
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err = app.Insert(ctx, taskEntity)
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} else {
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err = app.UpdateById(ctx, taskEntity)
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}
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if err != nil {
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return err
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}
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task, err := app.GetById(taskEntity.Id)
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if err != nil {
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return err
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}
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app.AddCronJob(ctx, task)
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return nil
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}
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func (app *dataSyncAppImpl) Delete(ctx context.Context, id uint64) error {
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if err := app.DeleteById(ctx, id); err != nil {
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return err
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}
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app.RemoveCronJobById(id)
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return nil
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}
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func (app *dataSyncAppImpl) AddCronJob(ctx context.Context, taskEntity *entity.DataSyncTask) {
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key := taskEntity.TaskKey
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// 先移除旧的任务
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scheduler.RemoveByKey(key)
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// 根据状态添加新的任务
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if taskEntity.Status == entity.DataSyncTaskStatusEnable {
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taskId := taskEntity.Id
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scheduler.AddFunByKey(key, taskEntity.TaskCron, func() {
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logx.Infof("开始执行同步任务: %d", taskId)
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if err := app.RunCronJob(ctx, taskId); err != nil {
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logx.Errorf("定时执行数据同步任务失败: %s", err.Error())
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}
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})
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}
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}
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func (app *dataSyncAppImpl) RemoveCronJobById(taskId uint64) {
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task, err := app.GetById(taskId)
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if err == nil {
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scheduler.RemoveByKey(task.TaskKey)
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}
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}
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func (app *dataSyncAppImpl) changeRunningState(id uint64, state int8) {
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task := new(entity.DataSyncTask)
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task.Id = id
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task.RunningState = state
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_ = app.UpdateById(context.Background(), task)
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}
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func (app *dataSyncAppImpl) RunCronJob(ctx context.Context, id uint64) error {
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// 查询最新的任务信息
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task, err := app.GetById(id)
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if err != nil {
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return errorx.NewBiz("任务不存在")
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}
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if task.RunningState == entity.DataSyncTaskRunStateRunning {
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return errorx.NewBiz("该任务正在执行中")
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}
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// 开始运行时，修改状态为运行中
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app.changeRunningState(id, entity.DataSyncTaskRunStateRunning)
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logx.InfofContext(ctx, "开始执行数据同步任务：%s => %s", task.TaskName, task.TaskKey)
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go func() {
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// 通过占位符格式化sql
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updSql := ""
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orderSql := ""
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if task.UpdFieldVal != "0" && task.UpdFieldVal != "" && task.UpdField != "" {
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srcConn, err := app.dbApp.GetDbConn(uint64(task.SrcDbId), task.SrcDbName)
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if err != nil {
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logx.ErrorfContext(ctx, "数据源连接不可用, %s", err.Error())
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return
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}
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task.UpdFieldVal = strings.Trim(task.UpdFieldVal, " ")
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// 判断UpdFieldVal数据类型
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var updFieldValType dbi.DataType
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if _, err = strconv.Atoi(task.UpdFieldVal); err != nil {
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if dateTimeReg.MatchString(task.UpdFieldVal) {
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updFieldValType = dbi.DataTypeDateTime
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} else {
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updFieldValType = dbi.DataTypeString
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}
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} else {
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updFieldValType = dbi.DataTypeNumber
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}
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wrapUpdFieldVal := srcConn.GetMetaData().GetDataHelper().WrapValue(task.UpdFieldVal, updFieldValType)
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updSql = fmt.Sprintf("and %s > %s", task.UpdField, wrapUpdFieldVal)
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orderSql = "order by " + task.UpdField + " asc "
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}
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// 正则判断DataSql是否以where .*结尾，如果是则不添加where 1 = 1
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var where = "where 1=1"
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if whereReg.MatchString(task.DataSql) {
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where = ""
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}
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// 组装查询sql
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sql := fmt.Sprintf("%s %s %s %s", task.DataSql, where, updSql, orderSql)
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log, err := app.doDataSync(ctx, sql, task)
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if err != nil {
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log.ErrText = fmt.Sprintf("执行失败: %s", err.Error())
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logx.ErrorContext(ctx, log.ErrText)
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log.Status = entity.DataSyncTaskStateFail
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app.endRunning(task, log)
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}
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}()
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return nil
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}
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func (app *dataSyncAppImpl) doDataSync(ctx context.Context, sql string, task *entity.DataSyncTask) (*entity.DataSyncLog, error) {
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now := time.Now()
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syncLog := &entity.DataSyncLog{
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TaskId: task.Id,
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CreateTime: &now,
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DataSqlFull: sql,
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Status: entity.DataSyncTaskStateRunning,
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}
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// 获取源数据库连接
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srcConn, err := app.dbApp.GetDbConn(uint64(task.SrcDbId), task.SrcDbName)
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if err != nil {
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return syncLog, errorx.NewBiz("连接源数据库失败: %s", err.Error())
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}
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// 获取目标数据库连接
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targetConn, err := app.dbApp.GetDbConn(uint64(task.TargetDbId), task.TargetDbName)
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if err != nil {
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return syncLog, errorx.NewBiz("连接目标数据库失败: %s", err.Error())
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}
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targetDbTx, err := targetConn.Begin()
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if err != nil {
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return syncLog, errorx.NewBiz("开启目标数据库事务失败: %s", err.Error())
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}
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defer func() {
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if r := recover(); r != nil {
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targetDbTx.Rollback()
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err = fmt.Errorf("%v", r)
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}
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}()
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srcMetaData := srcConn.GetMetaData()
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// task.FieldMap为json数组字符串 [{"src":"id","target":"id"}]，转为map
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var fieldMap []map[string]string
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err = json.Unmarshal([]byte(task.FieldMap), &fieldMap)
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if err != nil {
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return syncLog, errorx.NewBiz("解析字段映射json出错: %s", err.Error())
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}
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var updFieldType dbi.DataType
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// 记录本次同步数据总数
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total := 0
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batchSize := task.PageSize
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result := make([]map[string]any, 0)
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var queryColumns []*dbi.QueryColumn
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// 如果有数据库别名，则从UpdField中去掉数据库别名, 如：a.id => id，用于获取字段具体名称
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updFieldName := task.UpdField
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if task.UpdField != "" && strings.Contains(task.UpdField, ".") {
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updFieldName = strings.Split(task.UpdField, ".")[1]
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}
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_, err = srcConn.WalkQueryRows(context.Background(), sql, func(row map[string]any, columns []*dbi.QueryColumn) error {
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if len(queryColumns) == 0 {
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queryColumns = columns
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// 遍历columns 取task.UpdField的字段类型
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updFieldType = dbi.DataTypeString
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for _, column := range columns {
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if strings.EqualFold(column.Name, updFieldName) {
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updFieldType = srcMetaData.GetDataHelper().GetDataType(column.Type)
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break
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}
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}
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}
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total++
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result = append(result, row)
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if total%batchSize == 0 {
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if err := app.srcData2TargetDb(result, fieldMap, columns, updFieldType, updFieldName, task, srcMetaData, targetConn, targetDbTx); err != nil {
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return err
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}
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// 记录当前已同步的数据量
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syncLog.ErrText = fmt.Sprintf("本次任务执行中，已同步：%d条", total)
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logx.InfoContext(ctx, syncLog.ErrText)
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syncLog.ResNum = total
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app.saveLog(syncLog)
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result = result[:0]
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}
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return nil
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})
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if err != nil {
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targetDbTx.Rollback()
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return syncLog, err
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}
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// 处理剩余的数据
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if len(result) > 0 {
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if err := app.srcData2TargetDb(result, fieldMap, queryColumns, updFieldType, updFieldName, task, srcMetaData, targetConn, targetDbTx); err != nil {
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targetDbTx.Rollback()
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return syncLog, err
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}
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}
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// 如果是mssql，暂不手动提交事务，否则报错 mssql: The COMMIT TRANSACTION request has no corresponding BEGIN TRANSACTION.
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if err := targetDbTx.Commit(); err != nil {
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if targetConn.Info.Type != dbi.DbTypeMssql {
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return syncLog, errorx.NewBiz("数据同步-目标数据库事务提交失败: %s", err.Error())
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}
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}
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logx.InfofContext(ctx, "同步任务：[%s]，执行完毕，保存记录成功：[%d]条", task.TaskName, total)
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// 保存执行成功日志
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syncLog.ErrText = fmt.Sprintf("本次任务执行成功，新数据：%d 条", total)
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syncLog.Status = entity.DataSyncTaskStateSuccess
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syncLog.ResNum = total
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app.endRunning(task, syncLog)
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return syncLog, nil
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}
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func (app *dataSyncAppImpl) srcData2TargetDb(srcRes []map[string]any, fieldMap []map[string]string, columns []*dbi.QueryColumn, updFieldType dbi.DataType, updFieldName string, task *entity.DataSyncTask, srcMetaData *dbi.MetaDataX, targetDbConn *dbi.DbConn, targetDbTx *sql.Tx) error {
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// 遍历src字段列表，取出字段对应的类型
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var srcColumnTypes = make(map[string]string)
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for _, column := range columns {
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srcColumnTypes[column.Name] = column.Type
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}
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// 遍历res，组装数据
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var data = make([]map[string]any, 0)
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for _, record := range srcRes {
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var rowData = make(map[string]any)
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// 遍历字段映射, target字段的值为src字段取值
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for _, item := range fieldMap {
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srcField := item["src"]
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targetField := item["target"]
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// target字段的值为src字段取值
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rowData[targetField] = record[srcField]
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}
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data = append(data, rowData)
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}
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// 解决字段大小写问题
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updFieldVal := srcRes[len(srcRes)-1][strings.ToUpper(updFieldName)]
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if updFieldVal == "" || updFieldVal == nil {
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updFieldVal = srcRes[len(srcRes)-1][strings.ToLower(updFieldName)]
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}
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task.UpdFieldVal = srcMetaData.GetDataHelper().FormatData(updFieldVal, updFieldType)
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// 获取目标库字段数组
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targetWrapColumns := make([]string, 0)
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// 获取源库字段数组
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srcColumns := make([]string, 0)
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srcFieldTypes := make(map[string]dbi.DataType)
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targetMetaData := targetDbConn.GetMetaData()
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for _, item := range fieldMap {
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targetField := item["target"]
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srcField := item["target"]
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srcFieldTypes[srcField] = srcMetaData.GetDataHelper().GetDataType(srcColumnTypes[item["src"]])
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targetWrapColumns = append(targetWrapColumns, targetMetaData.QuoteIdentifier(targetField))
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srcColumns = append(srcColumns, srcField)
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}
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// 从目标库数据中取出源库字段对应的值
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values := make([][]any, 0)
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for _, record := range data {
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rawValue := make([]any, 0)
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for _, column := range srcColumns {
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// 某些情况，如oracle，需要转换时间类型的字符串为time类型
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res := srcMetaData.GetDataHelper().ParseData(record[column], srcFieldTypes[column])
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rawValue = append(rawValue, res)
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}
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values = append(values, rawValue)
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}
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// 目标数据库执行sql批量插入
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_, err := targetDbConn.GetDialect().BatchInsert(targetDbTx, task.TargetTableName, targetWrapColumns, values, task.DuplicateStrategy)
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if err != nil {
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return err
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}
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// 运行过程中，判断状态是否为已关闭，是则结束运行，否则继续运行
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taskParam, _ := app.GetById(task.Id)
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if taskParam.RunningState == entity.DataSyncTaskRunStateStop {
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return errorx.NewBiz("该任务已被手动终止")
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}
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return nil
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}
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func (app *dataSyncAppImpl) endRunning(taskEntity *entity.DataSyncTask, log *entity.DataSyncLog) {
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logx.Info(log.ErrText)
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state := log.Status
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task := new(entity.DataSyncTask)
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task.Id = taskEntity.Id
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task.RecentState = state
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if state == entity.DataSyncTaskStateSuccess {
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task.UpdFieldVal = taskEntity.UpdFieldVal
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}
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task.RunningState = entity.DataSyncTaskRunStateReady
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// 运行失败之后设置任务状态为禁用
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//if state == entity.DataSyncTaskStateFail {
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// taskEntity.Status = entity.DataSyncTaskStatusDisable
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// app.RemoveCronJob(taskEntity)
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//}
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_ = app.UpdateById(context.Background(), task)
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// 保存执行日志
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app.saveLog(log)
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}
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func (app *dataSyncAppImpl) saveLog(log *entity.DataSyncLog) {
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app.dbDataSyncLogRepo.Save(context.Background(), log)
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}
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func (app *dataSyncAppImpl) InitCronJob() {
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defer func() {
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if err := recover(); err != nil {
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logx.ErrorTrace("数据同步任务初始化失败: %s", err.(error))
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}
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}()
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// 修改执行中状态为待执行
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_ = app.UpdateByCond(context.TODO(), &entity.DataSyncTask{RunningState: entity.DataSyncTaskRunStateReady}, &entity.DataSyncTask{RunningState: entity.DataSyncTaskRunStateRunning})
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// 把所有正常任务添加到定时任务中
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pageParam := &model.PageParam{
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PageSize: 100,
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PageNum: 1,
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}
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cond := new(entity.DataSyncTaskQuery)
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cond.Status = entity.DataSyncTaskStatusEnable
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jobs := new([]entity.DataSyncTask)
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pr, _ := app.GetPageList(cond, pageParam, jobs)
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total := pr.Total
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add := 0
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for {
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for _, job := range *jobs {
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app.AddCronJob(contextx.NewTraceId(), &job)
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add++
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}
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if add >= int(total) {
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return
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}
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pageParam.PageNum++
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_, _ = app.GetPageList(cond, pageParam, jobs)
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}
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}
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func (app *dataSyncAppImpl) GetTaskLogList(condition *entity.DataSyncLogQuery, pageParam *model.PageParam, toEntity any, orderBy ...string) (*model.PageResult[any], error) {
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return app.dbDataSyncLogRepo.GetTaskLogList(condition, pageParam, toEntity, orderBy...)
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}
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