2021-05-08 18:00:33 +08:00
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package application
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import (
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2022-07-20 23:25:52 +08:00
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"context"
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2021-07-28 18:03:19 +08:00
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"database/sql"
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"fmt"
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2022-07-23 16:41:04 +08:00
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"mayfly-go/internal/constant"
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2022-09-09 18:26:08 +08:00
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"mayfly-go/internal/db/domain/entity"
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"mayfly-go/internal/db/domain/repository"
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machineapp "mayfly-go/internal/machine/application"
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"mayfly-go/internal/machine/infrastructure/machine"
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2022-06-02 17:41:11 +08:00
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"mayfly-go/pkg/biz"
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"mayfly-go/pkg/cache"
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"mayfly-go/pkg/global"
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"mayfly-go/pkg/model"
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"mayfly-go/pkg/utils"
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2022-07-20 01:37:25 +00:00
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"net"
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2022-06-16 15:55:18 +08:00
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"reflect"
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2022-03-24 17:50:44 +08:00
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"strconv"
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2021-07-28 18:03:19 +08:00
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"strings"
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"sync"
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"time"
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2022-07-10 12:14:06 +08:00
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2022-07-20 01:37:25 +00:00
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"github.com/go-sql-driver/mysql"
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2022-07-20 23:25:52 +08:00
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"github.com/lib/pq"
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)
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type Db interface {
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// 分页获取
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GetPageList(condition *entity.Db, pageParam *model.PageParam, toEntity interface{}, orderBy ...string) *model.PageResult
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Count(condition *entity.Db) int64
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// 根据条件获取
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GetDbBy(condition *entity.Db, cols ...string) error
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// 根据id获取
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GetById(id uint64, cols ...string) *entity.Db
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Save(entity *entity.Db)
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2021-07-28 18:03:19 +08:00
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// 删除数据库信息
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Delete(id uint64)
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// 获取数据库连接实例
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// @param id 数据库实例id
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// @param db 数据库
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GetDbInstance(id uint64, db string) *DbInstance
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// 获取数据库实例的所有数据库列表
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GetDatabases(entity *entity.Db) []string
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}
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func newDbApp(dbRepo repository.Db, dbSqlRepo repository.DbSql) Db {
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return &dbAppImpl{
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dbRepo: dbRepo,
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dbSqlRepo: dbSqlRepo,
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}
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}
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type dbAppImpl struct {
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dbRepo repository.Db
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dbSqlRepo repository.DbSql
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}
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// 分页获取数据库信息列表
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func (d *dbAppImpl) GetPageList(condition *entity.Db, pageParam *model.PageParam, toEntity interface{}, orderBy ...string) *model.PageResult {
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return d.dbRepo.GetDbList(condition, pageParam, toEntity, orderBy...)
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}
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func (d *dbAppImpl) Count(condition *entity.Db) int64 {
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return d.dbRepo.Count(condition)
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}
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// 根据条件获取
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func (d *dbAppImpl) GetDbBy(condition *entity.Db, cols ...string) error {
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return d.dbRepo.GetDb(condition, cols...)
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}
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// 根据id获取
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func (d *dbAppImpl) GetById(id uint64, cols ...string) *entity.Db {
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return d.dbRepo.GetById(id, cols...)
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}
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2021-07-28 18:03:19 +08:00
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func (d *dbAppImpl) Save(dbEntity *entity.Db) {
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// 默认tcp连接
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dbEntity.Network = dbEntity.GetNetwork()
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2021-07-28 18:03:19 +08:00
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// 测试连接
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if dbEntity.Password != "" {
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TestConnection(dbEntity)
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}
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// 查找是否存在该库
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oldDb := &entity.Db{Host: dbEntity.Host, Port: dbEntity.Port, EnvId: dbEntity.EnvId}
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err := d.GetDbBy(oldDb)
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if dbEntity.Id == 0 {
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biz.NotEmpty(dbEntity.Password, "密码不能为空")
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biz.IsTrue(err != nil, "该数据库实例已存在")
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dbEntity.PwdEncrypt()
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d.dbRepo.Insert(dbEntity)
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return
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}
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// 如果存在该库,则校验修改的库是否为该库
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if err == nil {
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biz.IsTrue(oldDb.Id == dbEntity.Id, "该数据库实例已存在")
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}
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dbId := dbEntity.Id
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old := d.GetById(dbId)
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var oldDbs []interface{}
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for _, v := range strings.Split(old.Database, " ") {
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// 关闭数据库连接
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CloseDb(dbEntity.Id, v)
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oldDbs = append(oldDbs, v)
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}
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var newDbs []interface{}
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for _, v := range strings.Split(dbEntity.Database, " ") {
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newDbs = append(newDbs, v)
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}
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// 比较新旧数据库列表,需要将移除的数据库相关联的信息删除
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_, delDb, _ := utils.ArrayCompare(newDbs, oldDbs, func(i1, i2 interface{}) bool {
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return i1.(string) == i2.(string)
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})
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for _, v := range delDb {
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// 删除该库关联的所有sql记录
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d.dbSqlRepo.DeleteBy(&entity.DbSql{DbId: dbId, Db: v.(string)})
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}
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2022-08-02 21:44:01 +08:00
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dbEntity.PwdEncrypt()
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d.dbRepo.Update(dbEntity)
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}
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func (d *dbAppImpl) Delete(id uint64) {
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db := d.GetById(id)
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dbs := strings.Split(db.Database, " ")
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for _, v := range dbs {
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// 关闭连接
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CloseDb(id, v)
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}
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d.dbRepo.Delete(id)
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// 删除该库下用户保存的所有sql信息
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d.dbSqlRepo.DeleteBy(&entity.DbSql{DbId: id})
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}
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2022-07-23 16:41:04 +08:00
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func (d *dbAppImpl) GetDatabases(ed *entity.Db) []string {
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ed.Network = ed.GetNetwork()
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databases := make([]string, 0)
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var dbConn *sql.DB
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var metaDb string
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var getDatabasesSql string
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if ed.Type == entity.DbTypeMysql {
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metaDb = "information_schema"
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getDatabasesSql = "SELECT SCHEMA_NAME AS dbname FROM SCHEMATA"
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} else {
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metaDb = "postgres"
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getDatabasesSql = "SELECT datname AS dbname FROM pg_database"
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}
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dbConn, err := GetDbConn(ed, metaDb)
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biz.ErrIsNilAppendErr(err, "数据库连接失败: %s")
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defer dbConn.Close()
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2022-10-16 14:22:19 +08:00
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_, res, err := SelectDataByDb(dbConn, getDatabasesSql, true)
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2022-07-23 16:41:04 +08:00
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biz.ErrIsNilAppendErr(err, "获取数据库列表失败")
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for _, re := range res {
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databases = append(databases, re["dbname"].(string))
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}
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return databases
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}
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2021-08-18 17:57:33 +08:00
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var mutex sync.Mutex
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2022-05-08 14:10:57 +08:00
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func (da *dbAppImpl) GetDbInstance(id uint64, db string) *DbInstance {
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// Id不为0,则为需要缓存
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needCache := id != 0
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if needCache {
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load, ok := dbCache.Get(GetDbCacheKey(id, db))
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if ok {
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return load.(*DbInstance)
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}
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}
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2022-07-26 18:32:45 +08:00
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mutex.Lock()
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defer mutex.Unlock()
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d := da.GetById(id)
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// 密码解密
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d.PwdDecrypt()
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biz.NotNil(d, "数据库信息不存在")
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biz.IsTrue(strings.Contains(d.Database, db), "未配置该库的操作权限")
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cacheKey := GetDbCacheKey(id, db)
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dbi := &DbInstance{Id: cacheKey, Type: d.Type, ProjectId: d.ProjectId, sshTunnelMachineId: d.SshTunnelMachineId}
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2022-07-23 16:41:04 +08:00
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DB, err := GetDbConn(d, db)
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2022-07-20 23:25:52 +08:00
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if err != nil {
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dbi.Close()
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2022-05-27 15:45:12 +08:00
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global.Log.Errorf("连接db失败: %s:%d/%s", d.Host, d.Port, db)
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panic(biz.NewBizErr(fmt.Sprintf("数据库连接失败: %s", err.Error())))
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}
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// 最大连接周期,超过时间的连接就close
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2022-05-12 10:34:16 +08:00
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// DB.SetConnMaxLifetime(100 * time.Second)
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// 设置最大连接数
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DB.SetMaxOpenConns(2)
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// 设置闲置连接数
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DB.SetMaxIdleConns(1)
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2022-07-20 23:25:52 +08:00
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dbi.db = DB
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global.Log.Infof("连接db: %s:%d/%s", d.Host, d.Port, db)
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if needCache {
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dbCache.Put(cacheKey, dbi)
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}
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return dbi
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}
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2022-10-16 14:22:19 +08:00
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//---------------------------------------- db instance ------------------------------------
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// db实例
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type DbInstance struct {
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Id string
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Type string
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ProjectId uint64
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db *sql.DB
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sshTunnelMachineId uint64
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}
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// 执行查询语句
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// 依次返回 列名数组,结果map,错误
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func (d *DbInstance) SelectData(execSql string) ([]string, []map[string]interface{}, error) {
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return SelectDataByDb(d.db, execSql, false)
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}
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// 将查询结果映射至struct,可具体参考sqlx库
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func (d *DbInstance) SelectData2Struct(execSql string, dest interface{}) error {
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return Select2StructByDb(d.db, execSql, dest)
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}
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// 执行内部查询语句,不返回列名以及不限制行数
|
|
|
|
|
|
// 依次返回 结果map,错误
|
|
|
|
|
|
func (d *DbInstance) innerSelect(execSql string) ([]map[string]interface{}, error) {
|
|
|
|
|
|
_, res, err := SelectDataByDb(d.db, execSql, true)
|
|
|
|
|
|
return res, err
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 执行 update, insert, delete,建表等sql
|
|
|
|
|
|
// 返回影响条数和错误
|
|
|
|
|
|
func (d *DbInstance) Exec(sql string) (int64, error) {
|
|
|
|
|
|
res, err := d.db.Exec(sql)
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
return 0, err
|
|
|
|
|
|
}
|
|
|
|
|
|
return res.RowsAffected()
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取数据库元信息实现接口
|
|
|
|
|
|
func (di *DbInstance) GetMeta() DbMetadata {
|
|
|
|
|
|
dbType := di.Type
|
|
|
|
|
|
if dbType == entity.DbTypeMysql {
|
|
|
|
|
|
return &MysqlMetadata{di: di}
|
|
|
|
|
|
}
|
|
|
|
|
|
if dbType == entity.DbTypePostgres {
|
|
|
|
|
|
return &PgsqlMetadata{di: di}
|
|
|
|
|
|
}
|
|
|
|
|
|
return nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 关闭连接
|
|
|
|
|
|
func (d *DbInstance) Close() {
|
|
|
|
|
|
if d.db != nil {
|
|
|
|
|
|
if err := d.db.Close(); err != nil {
|
|
|
|
|
|
global.Log.Errorf("关闭数据库实例[%s]连接失败: %s", d.Id, err.Error())
|
|
|
|
|
|
}
|
|
|
|
|
|
d.db = nil
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2021-07-28 18:03:19 +08:00
|
|
|
|
//------------------------------------------------------------------------------
|
2021-05-08 18:00:33 +08:00
|
|
|
|
|
2022-08-21 21:00:28 +08:00
|
|
|
|
// 单次最大查询数据集
|
|
|
|
|
|
const Max_Rows = 2000
|
|
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
// 客户端连接缓存,指定时间内没有访问则会被关闭, key为数据库实例id:数据库
|
|
|
|
|
|
var dbCache = cache.NewTimedCache(constant.DbConnExpireTime, 5*time.Second).
|
2021-08-18 17:57:33 +08:00
|
|
|
|
WithUpdateAccessTime(true).
|
|
|
|
|
|
OnEvicted(func(key interface{}, value interface{}) {
|
2022-05-12 10:34:16 +08:00
|
|
|
|
global.Log.Info(fmt.Sprintf("删除db连接缓存 id = %s", key))
|
2021-08-18 17:57:33 +08:00
|
|
|
|
value.(*DbInstance).Close()
|
|
|
|
|
|
})
|
2021-07-28 18:03:19 +08:00
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
func init() {
|
|
|
|
|
|
machine.AddCheckSshTunnelMachineUseFunc(func(machineId uint64) bool {
|
2022-09-22 11:56:21 +08:00
|
|
|
|
// 遍历所有db连接实例,若存在db实例使用该ssh隧道机器,则返回true,表示还在使用中...
|
2022-07-23 16:41:04 +08:00
|
|
|
|
items := dbCache.Items()
|
|
|
|
|
|
for _, v := range items {
|
|
|
|
|
|
if v.Value.(*DbInstance).sshTunnelMachineId == machineId {
|
|
|
|
|
|
return true
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
return false
|
|
|
|
|
|
})
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-05-08 14:10:57 +08:00
|
|
|
|
func GetDbCacheKey(dbId uint64, db string) string {
|
|
|
|
|
|
return fmt.Sprintf("%d:%s", dbId, db)
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func GetDbInstanceByCache(id string) *DbInstance {
|
|
|
|
|
|
if load, ok := dbCache.Get(id); ok {
|
2021-07-28 18:03:19 +08:00
|
|
|
|
return load.(*DbInstance)
|
|
|
|
|
|
}
|
|
|
|
|
|
return nil
|
2021-05-08 18:00:33 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2022-07-20 23:25:52 +08:00
|
|
|
|
func TestConnection(d *entity.Db) {
|
2022-07-23 16:41:04 +08:00
|
|
|
|
// 验证第一个库是否可以连接即可
|
|
|
|
|
|
DB, err := GetDbConn(d, strings.Split(d.Database, " ")[0])
|
|
|
|
|
|
biz.ErrIsNilAppendErr(err, "数据库连接失败: %s")
|
|
|
|
|
|
defer DB.Close()
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 获取数据库连接
|
|
|
|
|
|
func GetDbConn(d *entity.Db, db string) (*sql.DB, error) {
|
|
|
|
|
|
// SSH Conect
|
2022-07-20 23:25:52 +08:00
|
|
|
|
if d.EnableSshTunnel == 1 && d.SshTunnelMachineId != 0 {
|
2022-09-09 18:26:08 +08:00
|
|
|
|
sshTunnelMachine := machineapp.GetMachineApp().GetSshTunnelMachine(d.SshTunnelMachineId)
|
2022-07-20 23:25:52 +08:00
|
|
|
|
if d.Type == entity.DbTypeMysql {
|
|
|
|
|
|
mysql.RegisterDialContext(d.Network, func(ctx context.Context, addr string) (net.Conn, error) {
|
2022-07-24 18:54:23 +08:00
|
|
|
|
return sshTunnelMachine.GetDialConn("tcp", addr)
|
2022-07-20 23:25:52 +08:00
|
|
|
|
})
|
|
|
|
|
|
} else if d.Type == entity.DbTypePostgres {
|
2022-07-23 16:41:04 +08:00
|
|
|
|
_, err := pq.DialOpen(&PqSqlDialer{sshTunnelMachine: sshTunnelMachine}, getDsn(d, db))
|
2022-07-20 23:25:52 +08:00
|
|
|
|
if err != nil {
|
|
|
|
|
|
panic(biz.NewBizErr(fmt.Sprintf("postgres隧道连接失败: %s", err.Error())))
|
|
|
|
|
|
}
|
2022-07-20 01:37:25 +00:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
DB, err := sql.Open(d.Type, getDsn(d, db))
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
return nil, err
|
|
|
|
|
|
}
|
|
|
|
|
|
err = DB.Ping()
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
DB.Close()
|
|
|
|
|
|
return nil, err
|
|
|
|
|
|
}
|
2021-07-28 18:03:19 +08:00
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
return DB, nil
|
2021-07-28 18:03:19 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2022-10-16 14:22:19 +08:00
|
|
|
|
// 获取dataSourceName
|
|
|
|
|
|
func getDsn(d *entity.Db, db string) string {
|
|
|
|
|
|
var dsn string
|
|
|
|
|
|
if d.Type == entity.DbTypeMysql {
|
|
|
|
|
|
dsn = fmt.Sprintf("%s:%s@%s(%s:%d)/%s?timeout=8s", d.Username, d.Password, d.Network, d.Host, d.Port, db)
|
|
|
|
|
|
if d.Params != "" {
|
|
|
|
|
|
dsn = fmt.Sprintf("%s&%s", dsn, d.Params)
|
|
|
|
|
|
}
|
|
|
|
|
|
return dsn
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if d.Type == entity.DbTypePostgres {
|
|
|
|
|
|
dsn = fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=%s sslmode=disable", d.Host, d.Port, d.Username, d.Password, db)
|
|
|
|
|
|
if d.Params != "" {
|
|
|
|
|
|
dsn = fmt.Sprintf("%s %s", dsn, strings.Join(strings.Split(d.Params, "&"), " "))
|
|
|
|
|
|
}
|
|
|
|
|
|
return dsn
|
|
|
|
|
|
}
|
|
|
|
|
|
return ""
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func SelectDataByDb(db *sql.DB, selectSql string, isInner bool) ([]string, []map[string]interface{}, error) {
|
2022-07-23 16:41:04 +08:00
|
|
|
|
rows, err := db.Query(selectSql)
|
2021-07-28 18:03:19 +08:00
|
|
|
|
if err != nil {
|
|
|
|
|
|
return nil, nil, err
|
|
|
|
|
|
}
|
|
|
|
|
|
// rows对象一定要close掉,如果出错,不关掉则会很迅速的达到设置最大连接数,
|
|
|
|
|
|
// 后面的链接过来直接报错或拒绝,实际上也没有起效果
|
|
|
|
|
|
defer func() {
|
|
|
|
|
|
if rows != nil {
|
|
|
|
|
|
rows.Close()
|
|
|
|
|
|
}
|
|
|
|
|
|
}()
|
2022-06-16 15:55:18 +08:00
|
|
|
|
colTypes, _ := rows.ColumnTypes()
|
2021-07-28 18:03:19 +08:00
|
|
|
|
// 这里表示一行填充数据
|
2022-06-16 15:55:18 +08:00
|
|
|
|
scans := make([]interface{}, len(colTypes))
|
2021-07-28 18:03:19 +08:00
|
|
|
|
// 这里表示一行所有列的值,用[]byte表示
|
2022-06-16 15:55:18 +08:00
|
|
|
|
vals := make([][]byte, len(colTypes))
|
2021-07-28 18:03:19 +08:00
|
|
|
|
// 这里scans引用vals,把数据填充到[]byte里
|
|
|
|
|
|
for k := range vals {
|
|
|
|
|
|
scans[k] = &vals[k]
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-06-16 15:55:18 +08:00
|
|
|
|
result := make([]map[string]interface{}, 0)
|
|
|
|
|
|
// 列名用于前端表头名称按照数据库与查询字段顺序显示
|
2021-07-28 18:03:19 +08:00
|
|
|
|
colNames := make([]string, 0)
|
|
|
|
|
|
// 是否第一次遍历,列名数组只需第一次遍历时加入
|
|
|
|
|
|
isFirst := true
|
2022-08-21 21:00:28 +08:00
|
|
|
|
rowNum := 0
|
2021-07-28 18:03:19 +08:00
|
|
|
|
for rows.Next() {
|
2022-08-21 21:00:28 +08:00
|
|
|
|
rowNum++
|
2022-10-16 14:22:19 +08:00
|
|
|
|
// 非内部sql,则校验返回结果数量
|
|
|
|
|
|
if !isInner {
|
|
|
|
|
|
biz.IsTrue(rowNum <= Max_Rows, "结果集 > 2000, 请完善条件或分页信息")
|
|
|
|
|
|
}
|
2022-08-21 21:00:28 +08:00
|
|
|
|
|
2021-07-28 18:03:19 +08:00
|
|
|
|
// 不Scan也会导致等待,该链接实际处于未工作的状态,然后也会导致连接数迅速达到最大
|
|
|
|
|
|
err := rows.Scan(scans...)
|
|
|
|
|
|
if err != nil {
|
|
|
|
|
|
return nil, nil, err
|
|
|
|
|
|
}
|
|
|
|
|
|
// 每行数据
|
2022-06-16 15:55:18 +08:00
|
|
|
|
rowData := make(map[string]interface{})
|
2021-07-28 18:03:19 +08:00
|
|
|
|
// 把vals中的数据复制到row中
|
2022-06-16 15:55:18 +08:00
|
|
|
|
for i, v := range vals {
|
|
|
|
|
|
colType := colTypes[i]
|
|
|
|
|
|
colName := colType.Name()
|
2022-08-21 21:00:28 +08:00
|
|
|
|
// 如果是第一行,则将列名加入到列信息中,由于map是无序的,所有需要返回列名的有序数组
|
2021-07-28 18:03:19 +08:00
|
|
|
|
if isFirst {
|
2022-06-16 15:55:18 +08:00
|
|
|
|
colNames = append(colNames, colName)
|
2021-07-28 18:03:19 +08:00
|
|
|
|
}
|
2022-09-28 21:40:59 +08:00
|
|
|
|
rowData[colName] = valueConvert(v, colType)
|
2021-07-28 18:03:19 +08:00
|
|
|
|
}
|
2022-06-16 15:55:18 +08:00
|
|
|
|
// 放入结果集
|
2021-07-28 18:03:19 +08:00
|
|
|
|
result = append(result, rowData)
|
|
|
|
|
|
isFirst = false
|
|
|
|
|
|
}
|
|
|
|
|
|
return colNames, result, nil
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-09-28 21:40:59 +08:00
|
|
|
|
// 将查询的值转为对应列类型的实际值,不全部转为字符串
|
|
|
|
|
|
func valueConvert(data []byte, colType *sql.ColumnType) interface{} {
|
|
|
|
|
|
if data == nil {
|
|
|
|
|
|
return nil
|
|
|
|
|
|
}
|
|
|
|
|
|
// 列的数据库类型名
|
|
|
|
|
|
colDatabaseTypeName := strings.ToLower(colType.DatabaseTypeName())
|
|
|
|
|
|
|
|
|
|
|
|
// 如果类型是bit,则直接返回第一个字节即可
|
|
|
|
|
|
if strings.Contains(colDatabaseTypeName, "bit") {
|
|
|
|
|
|
return data[0]
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// 这里把[]byte数据转成string
|
|
|
|
|
|
stringV := string(data)
|
|
|
|
|
|
if stringV == "" {
|
|
|
|
|
|
return ""
|
|
|
|
|
|
}
|
|
|
|
|
|
colScanType := strings.ToLower(colType.ScanType().Name())
|
|
|
|
|
|
|
|
|
|
|
|
if strings.Contains(colScanType, "int") {
|
|
|
|
|
|
// 如果长度超过16位,则返回字符串,因为前端js长度大于16会丢失精度
|
|
|
|
|
|
if len(stringV) > 16 {
|
|
|
|
|
|
return stringV
|
|
|
|
|
|
}
|
|
|
|
|
|
intV, _ := strconv.Atoi(stringV)
|
|
|
|
|
|
switch colType.ScanType().Kind() {
|
|
|
|
|
|
case reflect.Int8:
|
|
|
|
|
|
return int8(intV)
|
|
|
|
|
|
case reflect.Uint8:
|
|
|
|
|
|
return uint8(intV)
|
|
|
|
|
|
case reflect.Int64:
|
|
|
|
|
|
return int64(intV)
|
|
|
|
|
|
case reflect.Uint64:
|
|
|
|
|
|
return uint64(intV)
|
|
|
|
|
|
case reflect.Uint:
|
|
|
|
|
|
return uint(intV)
|
|
|
|
|
|
default:
|
|
|
|
|
|
return intV
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
if strings.Contains(colScanType, "float") {
|
|
|
|
|
|
floatV, _ := strconv.ParseFloat(stringV, 64)
|
|
|
|
|
|
return floatV
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return stringV
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-10-16 14:22:19 +08:00
|
|
|
|
// 查询数据结果映射至struct。可参考sqlx库
|
|
|
|
|
|
func Select2StructByDb(db *sql.DB, selectSql string, dest interface{}) error {
|
2022-10-16 11:01:45 +08:00
|
|
|
|
rows, err := db.Query(selectSql)
|
|
|
|
|
|
if err != nil {
|
2022-10-16 14:22:19 +08:00
|
|
|
|
return err
|
2022-10-16 11:01:45 +08:00
|
|
|
|
}
|
|
|
|
|
|
// rows对象一定要close掉,如果出错,不关掉则会很迅速的达到设置最大连接数,
|
|
|
|
|
|
// 后面的链接过来直接报错或拒绝,实际上也没有起效果
|
|
|
|
|
|
defer func() {
|
|
|
|
|
|
if rows != nil {
|
|
|
|
|
|
rows.Close()
|
|
|
|
|
|
}
|
|
|
|
|
|
}()
|
2022-10-16 14:22:19 +08:00
|
|
|
|
return scanAll(rows, dest, false)
|
|
|
|
|
|
}
|
2022-10-16 11:01:45 +08:00
|
|
|
|
|
2022-10-16 14:22:19 +08:00
|
|
|
|
// 删除db缓存并关闭该数据库所有连接
|
|
|
|
|
|
func CloseDb(dbId uint64, db string) {
|
|
|
|
|
|
dbCache.Delete(GetDbCacheKey(dbId, db))
|
2022-10-16 11:01:45 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
type PqSqlDialer struct {
|
|
|
|
|
|
sshTunnelMachine *machine.SshTunnelMachine
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
func (pd *PqSqlDialer) Dial(network, address string) (net.Conn, error) {
|
|
|
|
|
|
if sshConn, err := pd.sshTunnelMachine.GetDialConn("tcp", address); err == nil {
|
|
|
|
|
|
// 将ssh conn包装,否则redis内部设置超时会报错,ssh conn不支持设置超时会返回错误: ssh: tcpChan: deadline not supported
|
|
|
|
|
|
return &utils.WrapSshConn{Conn: sshConn}, nil
|
|
|
|
|
|
} else {
|
|
|
|
|
|
return nil, err
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
2022-10-16 14:22:19 +08:00
|
|
|
|
|
2022-07-23 16:41:04 +08:00
|
|
|
|
func (pd *PqSqlDialer) DialTimeout(network, address string, timeout time.Duration) (net.Conn, error) {
|
|
|
|
|
|
return pd.Dial(network, address)
|
|
|
|
|
|
}
|