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								package dbi
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								import (
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									"fmt"
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									machineapp "mayfly-go/internal/machine/application"
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									"mayfly-go/internal/machine/mcm"
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									"mayfly-go/pkg/errorx"
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									"mayfly-go/pkg/logx"
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									"strings"
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								)
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								type DbType string
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								func ToDbType(dbType string) DbType {
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									return DbType(dbType)
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								}
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								func (dbType DbType) Equal(typ string) bool {
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									return ToDbType(typ) == dbType
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								}
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								type DbInfo struct {
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									InstanceId uint64 // 实例id
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									Id         uint64 // dbId
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									Name       string
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									Type     DbType // 类型,mysql postgres等
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									Host     string
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									Port     int
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									Extra    string // 连接需要的其他额外参数(json字符串),如oracle数据库需要指定sid等
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									Network  string
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									Username string
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									Password string
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									Params   string
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									Database string // 若有schema的库则为'database/scheam'格式
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									Version        DbVersion // 数据库版本信息,用于语法兼容
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									DefaultVersion bool      // 经过查询数据库版本信息后,是否仍然使用默认版本
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									CodePath           []string
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									SshTunnelMachineId int
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									useSshTunnel       bool // 是否使用系统自己实现的ssh隧道连接,而非库自带的
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									Meta Meta
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								}
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								// 获取记录日志的描述
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								func (d *DbInfo) GetLogDesc() string {
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									return fmt.Sprintf("DB[id=%d, tag=%s, name=%s, ip=%s:%d, database=%s]", d.Id, d.CodePath, d.Name, d.Host, d.Port, d.Database)
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								}
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								// 连接数据库
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								func (dbInfo *DbInfo) Conn(meta Meta) (*DbConn, error) {
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									if meta == nil {
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										return nil, errorx.NewBiz("the database meta information interface cannot be empty")
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									}
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									// 赋值Meta,方便后续获取dialect等
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									dbInfo.Meta = meta
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									database := dbInfo.Database
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									// 如果数据库为空,则使用默认数据库进行连接
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									if database == "" {
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										database = meta.GetMetadata(&DbConn{Info: dbInfo}).GetDefaultDb()
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										dbInfo.Database = database
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									}
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									conn, err := meta.GetSqlDb(dbInfo)
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									if err != nil {
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										logx.Errorf("db connection failed: %s:%d/%s, err:%s", dbInfo.Host, dbInfo.Port, database, err.Error())
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										return nil, errorx.NewBiz("db connection failed: %s", err.Error())
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									}
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									err = conn.Ping()
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									if err != nil {
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										logx.Errorf("db ping failed: %s:%d/%s, err:%s", dbInfo.Host, dbInfo.Port, database, err.Error())
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										return nil, errorx.NewBiz("db connection failed: %s", err.Error())
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									}
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									dbc := &DbConn{Id: GetDbConnId(dbInfo.Id, database), Info: dbInfo}
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									// 最大连接周期,超过时间的连接就close
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									// conn.SetConnMaxLifetime(100 * time.Second)
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									// 设置最大连接数
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									conn.SetMaxOpenConns(5)
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									// 设置闲置连接数
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									conn.SetMaxIdleConns(1)
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									dbc.db = conn
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									logx.Infof("db connection: %s:%d/%s", dbInfo.Host, dbInfo.Port, database)
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									return dbc, nil
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								}
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								// 如果使用了ssh隧道,将其host port改变其本地映射host port
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								func (di *DbInfo) IfUseSshTunnelChangeIpPort() error {
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									// 开启ssh隧道
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									if di.SshTunnelMachineId > 0 {
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										sshTunnelMachine, err := GetSshTunnel(di.SshTunnelMachineId)
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										if err != nil {
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											return err
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										}
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										exposedIp, exposedPort, err := sshTunnelMachine.OpenSshTunnel(fmt.Sprintf("db:%d", di.Id), di.Host, di.Port)
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										if err != nil {
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											return err
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										}
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										di.Host = exposedIp
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										di.Port = exposedPort
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										di.useSshTunnel = true
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									}
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									return nil
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								}
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											2024-03-15 13:31:53 +08:00
										 
									 
								 
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								 | 
							
							
								// 获取当前库的schema(兼容 database/schema模式)
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											2024-03-11 20:04:20 +08:00
										 
									 
								 
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								 | 
							
							
								func (di *DbInfo) CurrentSchema() string {
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								 | 
							
							
									dbName := di.Database
							 | 
						
					
						
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							 | 
							
								
									
								 | 
							
							
									schema := ""
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							| 
								
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							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									arr := strings.Split(dbName, "/")
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									if len(arr) == 2 {
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							 | 
							
								
									
								 | 
							
							
										schema = arr[1]
							 | 
						
					
						
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								 | 
							
							
									}
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							| 
								
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								 | 
							
							
									return schema
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								 | 
							
							
								}
							 | 
						
					
						
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							 | 
							
								
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								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2024-03-15 13:31:53 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
										
									
								 | 
							
							
								// 获取当前数据库(兼容 database/schema模式)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								func (di *DbInfo) GetDatabase() string {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									dbName := di.Database
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									ss := strings.Split(dbName, "/")
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									if len(ss) > 1 {
							 | 
						
					
						
							| 
								
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							 | 
							
								
									
								 | 
							
							
										return ss[0]
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									return dbName
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2024-01-13 13:38:53 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								// 根据ssh tunnel机器id返回ssh tunnel
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								func GetSshTunnel(sshTunnelMachineId int) (*mcm.SshTunnelMachine, error) {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									return machineapp.GetMachineApp().GetSshTunnelMachine(sshTunnelMachineId)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2023-10-27 17:41:45 +08:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								// 获取连接id
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								func GetDbConnId(dbId uint64, db string) string {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									if dbId == 0 {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
										return ""
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
									return fmt.Sprintf("%d:%s", dbId, db)
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								}
							 |