mirror of
https://github.com/Syngnat/GoNavi.git
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e01ecfc387
- 新增 DuckDB 与 Diros 后端驱动实现并接入数据库工厂 - 前端连接配置补充 DuckDB/Diros 入口及方言映射 - 侧边栏支持 DuckDB Macro 函数列表加载与对象分组展示 - 定义查看器支持 DuckDB 函数定义查询与 DDL 还原 - 后端补充 DuckDB 函数删除分支并限制存储过程操作
691 lines
17 KiB
Go
691 lines
17 KiB
Go
package db
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import (
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"context"
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"database/sql"
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"fmt"
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"net/url"
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"strconv"
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"strings"
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"time"
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"GoNavi-Wails/internal/connection"
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"GoNavi-Wails/internal/logger"
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"GoNavi-Wails/internal/ssh"
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"GoNavi-Wails/internal/utils"
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_ "github.com/go-sql-driver/mysql"
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)
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type MySQLDB struct {
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conn *sql.DB
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pingTimeout time.Duration
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}
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const defaultMySQLPort = 3306
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func parseHostPortWithDefault(raw string, defaultPort int) (string, int, bool) {
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text := strings.TrimSpace(raw)
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if text == "" {
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return "", 0, false
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}
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if strings.HasPrefix(text, "[") {
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end := strings.Index(text, "]")
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if end < 0 {
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return text, defaultPort, true
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}
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host := text[1:end]
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portText := strings.TrimSpace(text[end+1:])
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if strings.HasPrefix(portText, ":") {
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if p, err := strconv.Atoi(strings.TrimSpace(strings.TrimPrefix(portText, ":"))); err == nil && p > 0 {
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return host, p, true
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}
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}
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return host, defaultPort, true
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}
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lastColon := strings.LastIndex(text, ":")
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if lastColon > 0 && strings.Count(text, ":") == 1 {
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host := strings.TrimSpace(text[:lastColon])
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portText := strings.TrimSpace(text[lastColon+1:])
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if host != "" {
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if p, err := strconv.Atoi(portText); err == nil && p > 0 {
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return host, p, true
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}
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return host, defaultPort, true
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}
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}
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return text, defaultPort, true
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}
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func normalizeMySQLAddress(host string, port int) string {
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h := strings.TrimSpace(host)
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if h == "" {
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h = "localhost"
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}
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p := port
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if p <= 0 {
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p = defaultMySQLPort
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}
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return fmt.Sprintf("%s:%d", h, p)
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}
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func applyMySQLURI(config connection.ConnectionConfig) connection.ConnectionConfig {
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uriText := strings.TrimSpace(config.URI)
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if uriText == "" {
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return config
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}
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lowerURI := strings.ToLower(uriText)
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if !strings.HasPrefix(lowerURI, "mysql://") {
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return config
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}
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parsed, err := url.Parse(uriText)
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if err != nil {
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return config
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}
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if parsed.User != nil {
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if config.User == "" {
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config.User = parsed.User.Username()
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}
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if pass, ok := parsed.User.Password(); ok && config.Password == "" {
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config.Password = pass
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}
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}
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if dbName := strings.TrimPrefix(parsed.Path, "/"); dbName != "" && config.Database == "" {
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config.Database = dbName
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}
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defaultPort := config.Port
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if defaultPort <= 0 {
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defaultPort = defaultMySQLPort
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}
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hostsFromURI := make([]string, 0, 4)
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hostText := strings.TrimSpace(parsed.Host)
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if hostText != "" {
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for _, entry := range strings.Split(hostText, ",") {
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host, port, ok := parseHostPortWithDefault(entry, defaultPort)
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if !ok {
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continue
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}
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hostsFromURI = append(hostsFromURI, normalizeMySQLAddress(host, port))
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}
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}
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if len(config.Hosts) == 0 && len(hostsFromURI) > 0 {
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config.Hosts = hostsFromURI
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}
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if strings.TrimSpace(config.Host) == "" && len(hostsFromURI) > 0 {
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host, port, ok := parseHostPortWithDefault(hostsFromURI[0], defaultPort)
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if ok {
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config.Host = host
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config.Port = port
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}
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}
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if config.Topology == "" {
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topology := strings.TrimSpace(parsed.Query().Get("topology"))
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if topology != "" {
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config.Topology = strings.ToLower(topology)
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}
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}
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return config
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}
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func collectMySQLAddresses(config connection.ConnectionConfig) []string {
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defaultPort := config.Port
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if defaultPort <= 0 {
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defaultPort = defaultMySQLPort
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}
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candidates := make([]string, 0, len(config.Hosts)+1)
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if len(config.Hosts) > 0 {
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candidates = append(candidates, config.Hosts...)
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} else {
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candidates = append(candidates, normalizeMySQLAddress(config.Host, defaultPort))
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}
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result := make([]string, 0, len(candidates))
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seen := make(map[string]struct{}, len(candidates))
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for _, entry := range candidates {
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host, port, ok := parseHostPortWithDefault(entry, defaultPort)
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if !ok {
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continue
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}
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normalized := normalizeMySQLAddress(host, port)
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if _, exists := seen[normalized]; exists {
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continue
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}
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seen[normalized] = struct{}{}
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result = append(result, normalized)
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}
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return result
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}
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func (m *MySQLDB) getDSN(config connection.ConnectionConfig) string {
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database := config.Database
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protocol := "tcp"
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address := normalizeMySQLAddress(config.Host, config.Port)
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if config.UseSSH {
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netName, err := ssh.RegisterSSHNetwork(config.SSH)
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if err == nil {
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protocol = netName
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address = normalizeMySQLAddress(config.Host, config.Port)
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} else {
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logger.Warnf("注册 SSH 网络失败，将尝试直连：地址=%s:%d 用户=%s，原因：%v", config.Host, config.Port, config.User, err)
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}
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}
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timeout := getConnectTimeoutSeconds(config)
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return fmt.Sprintf("%s:%s@%s(%s)/%s?charset=utf8mb4&parseTime=True&loc=Local&timeout=%ds",
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config.User, config.Password, protocol, address, database, timeout)
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}
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func resolveMySQLCredential(config connection.ConnectionConfig, addressIndex int) (string, string) {
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primaryUser := strings.TrimSpace(config.User)
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primaryPassword := config.Password
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replicaUser := strings.TrimSpace(config.MySQLReplicaUser)
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replicaPassword := config.MySQLReplicaPassword
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if addressIndex > 0 && replicaUser != "" {
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return replicaUser, replicaPassword
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}
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if primaryUser == "" && replicaUser != "" {
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return replicaUser, replicaPassword
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}
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return config.User, primaryPassword
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}
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func (m *MySQLDB) Connect(config connection.ConnectionConfig) error {
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runConfig := applyMySQLURI(config)
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addresses := collectMySQLAddresses(runConfig)
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if len(addresses) == 0 {
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return fmt.Errorf("连接建立后验证失败：未找到可用的 MySQL 地址")
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}
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var errorDetails []string
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for index, address := range addresses {
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candidateConfig := runConfig
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host, port, ok := parseHostPortWithDefault(address, defaultMySQLPort)
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if !ok {
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continue
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}
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candidateConfig.Host = host
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candidateConfig.Port = port
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candidateConfig.User, candidateConfig.Password = resolveMySQLCredential(runConfig, index)
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dsn := m.getDSN(candidateConfig)
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db, err := sql.Open("mysql", dsn)
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if err != nil {
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errorDetails = append(errorDetails, fmt.Sprintf("%s 打开失败: %v", address, err))
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continue
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}
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timeout := getConnectTimeout(candidateConfig)
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ctx, cancel := utils.ContextWithTimeout(timeout)
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pingErr := db.PingContext(ctx)
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cancel()
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if pingErr != nil {
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_ = db.Close()
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errorDetails = append(errorDetails, fmt.Sprintf("%s 验证失败: %v", address, pingErr))
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continue
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}
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m.conn = db
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m.pingTimeout = timeout
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return nil
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}
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if len(errorDetails) == 0 {
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return fmt.Errorf("连接建立后验证失败：未找到可用的 MySQL 地址")
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}
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return fmt.Errorf("连接建立后验证失败：%s", strings.Join(errorDetails, "；"))
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}
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func (m *MySQLDB) Close() error {
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if m.conn != nil {
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return m.conn.Close()
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}
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return nil
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}
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func (m *MySQLDB) Ping() error {
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if m.conn == nil {
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return fmt.Errorf("connection not open")
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}
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timeout := m.pingTimeout
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if timeout <= 0 {
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timeout = 5 * time.Second
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}
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ctx, cancel := utils.ContextWithTimeout(timeout)
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defer cancel()
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return m.conn.PingContext(ctx)
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}
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func (m *MySQLDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
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if m.conn == nil {
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return nil, nil, fmt.Errorf("connection not open")
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}
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rows, err := m.conn.QueryContext(ctx, query)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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return scanRows(rows)
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}
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func (m *MySQLDB) Query(query string) ([]map[string]interface{}, []string, error) {
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if m.conn == nil {
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return nil, nil, fmt.Errorf("connection not open")
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}
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rows, err := m.conn.Query(query)
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if err != nil {
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return nil, nil, err
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}
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defer rows.Close()
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return scanRows(rows)
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}
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func (m *MySQLDB) ExecContext(ctx context.Context, query string) (int64, error) {
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if m.conn == nil {
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return 0, fmt.Errorf("connection not open")
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}
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res, err := m.conn.ExecContext(ctx, query)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func (m *MySQLDB) Exec(query string) (int64, error) {
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if m.conn == nil {
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return 0, fmt.Errorf("connection not open")
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}
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res, err := m.conn.Exec(query)
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if err != nil {
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return 0, err
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}
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return res.RowsAffected()
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}
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func (m *MySQLDB) GetDatabases() ([]string, error) {
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data, _, err := m.Query("SHOW DATABASES")
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if err != nil {
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return nil, err
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}
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var dbs []string
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for _, row := range data {
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if val, ok := row["Database"]; ok {
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dbs = append(dbs, fmt.Sprintf("%v", val))
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} else if val, ok := row["database"]; ok {
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dbs = append(dbs, fmt.Sprintf("%v", val))
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}
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}
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return dbs, nil
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}
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func (m *MySQLDB) GetTables(dbName string) ([]string, error) {
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query := "SHOW TABLES"
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if dbName != "" {
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query = fmt.Sprintf("SHOW TABLES FROM `%s`", dbName)
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}
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data, _, err := m.Query(query)
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if err != nil {
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return nil, err
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}
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var tables []string
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for _, row := range data {
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for _, v := range row {
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tables = append(tables, fmt.Sprintf("%v", v))
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break
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}
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}
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return tables, nil
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}
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func (m *MySQLDB) GetCreateStatement(dbName, tableName string) (string, error) {
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query := fmt.Sprintf("SHOW CREATE TABLE `%s`.`%s`", dbName, tableName)
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if dbName == "" {
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query = fmt.Sprintf("SHOW CREATE TABLE `%s`", tableName)
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}
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data, _, err := m.Query(query)
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if err != nil {
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return "", err
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}
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if len(data) > 0 {
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if val, ok := data[0]["Create Table"]; ok {
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return fmt.Sprintf("%v", val), nil
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}
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}
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return "", fmt.Errorf("create statement not found")
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}
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func (m *MySQLDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
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query := fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`.`%s`", dbName, tableName)
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if dbName == "" {
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query = fmt.Sprintf("SHOW FULL COLUMNS FROM `%s`", tableName)
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}
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data, _, err := m.Query(query)
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if err != nil {
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return nil, err
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}
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var columns []connection.ColumnDefinition
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for _, row := range data {
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col := connection.ColumnDefinition{
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Name: fmt.Sprintf("%v", row["Field"]),
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Type: fmt.Sprintf("%v", row["Type"]),
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Nullable: fmt.Sprintf("%v", row["Null"]),
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Key: fmt.Sprintf("%v", row["Key"]),
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Extra: fmt.Sprintf("%v", row["Extra"]),
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Comment: fmt.Sprintf("%v", row["Comment"]),
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}
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if row["Default"] != nil {
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d := fmt.Sprintf("%v", row["Default"])
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col.Default = &d
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}
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columns = append(columns, col)
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}
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return columns, nil
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}
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func (m *MySQLDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
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query := fmt.Sprintf("SHOW INDEX FROM `%s`.`%s`", dbName, tableName)
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if dbName == "" {
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query = fmt.Sprintf("SHOW INDEX FROM `%s`", tableName)
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}
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data, _, err := m.Query(query)
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if err != nil {
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return nil, err
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}
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var indexes []connection.IndexDefinition
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for _, row := range data {
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nonUnique := 0
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if val, ok := row["Non_unique"]; ok {
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if f, ok := val.(float64); ok {
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nonUnique = int(f)
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} else if i, ok := val.(int64); ok {
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nonUnique = int(i)
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}
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}
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seq := 0
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if val, ok := row["Seq_in_index"]; ok {
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if f, ok := val.(float64); ok {
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seq = int(f)
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} else if i, ok := val.(int64); ok {
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seq = int(i)
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}
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}
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idx := connection.IndexDefinition{
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Name: fmt.Sprintf("%v", row["Key_name"]),
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ColumnName: fmt.Sprintf("%v", row["Column_name"]),
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NonUnique: nonUnique,
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SeqInIndex: seq,
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IndexType: fmt.Sprintf("%v", row["Index_type"]),
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}
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indexes = append(indexes, idx)
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}
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return indexes, nil
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}
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func (m *MySQLDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
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query := fmt.Sprintf(`SELECT CONSTRAINT_NAME, COLUMN_NAME, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME
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FROM information_schema.KEY_COLUMN_USAGE
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WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s' AND REFERENCED_TABLE_NAME IS NOT NULL`, dbName, tableName)
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data, _, err := m.Query(query)
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if err != nil {
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return nil, err
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}
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var fks []connection.ForeignKeyDefinition
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for _, row := range data {
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fk := connection.ForeignKeyDefinition{
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Name: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
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ColumnName: fmt.Sprintf("%v", row["COLUMN_NAME"]),
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RefTableName: fmt.Sprintf("%v", row["REFERENCED_TABLE_NAME"]),
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RefColumnName: fmt.Sprintf("%v", row["REFERENCED_COLUMN_NAME"]),
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ConstraintName: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
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}
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fks = append(fks, fk)
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}
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return fks, nil
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}
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func (m *MySQLDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
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query := fmt.Sprintf("SHOW TRIGGERS FROM `%s` WHERE `Table` = '%s'", dbName, tableName)
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data, _, err := m.Query(query)
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if err != nil {
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return nil, err
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}
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var triggers []connection.TriggerDefinition
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for _, row := range data {
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trig := connection.TriggerDefinition{
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Name: fmt.Sprintf("%v", row["Trigger"]),
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Timing: fmt.Sprintf("%v", row["Timing"]),
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Event: fmt.Sprintf("%v", row["Event"]),
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Statement: fmt.Sprintf("%v", row["Statement"]),
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}
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triggers = append(triggers, trig)
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}
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return triggers, nil
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}
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func (m *MySQLDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
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if m.conn == nil {
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return fmt.Errorf("connection not open")
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}
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tx, err := m.conn.Begin()
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if err != nil {
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return err
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}
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defer tx.Rollback()
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// 1. Deletes
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for _, pk := range changes.Deletes {
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var wheres []string
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var args []interface{}
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for k, v := range pk {
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wheres = append(wheres, fmt.Sprintf("`%s` = ?", k))
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args = append(args, normalizeMySQLDateTimeValue(v))
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}
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if len(wheres) == 0 {
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continue
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}
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query := fmt.Sprintf("DELETE FROM `%s` WHERE %s", tableName, strings.Join(wheres, " AND "))
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res, err := tx.Exec(query, args...)
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if err != nil {
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return fmt.Errorf("delete error: %v", err)
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}
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if affected, err := res.RowsAffected(); err == nil && affected == 0 {
|
||
return fmt.Errorf("删除未生效：未匹配到任何行")
|
||
}
|
||
}
|
||
|
||
// 2. Updates
|
||
for _, update := range changes.Updates {
|
||
var sets []string
|
||
var args []interface{}
|
||
|
||
for k, v := range update.Values {
|
||
sets = append(sets, fmt.Sprintf("`%s` = ?", k))
|
||
args = append(args, normalizeMySQLDateTimeValue(v))
|
||
}
|
||
|
||
if len(sets) == 0 {
|
||
continue
|
||
}
|
||
|
||
var wheres []string
|
||
for k, v := range update.Keys {
|
||
wheres = append(wheres, fmt.Sprintf("`%s` = ?", k))
|
||
args = append(args, normalizeMySQLDateTimeValue(v))
|
||
}
|
||
|
||
if len(wheres) == 0 {
|
||
return fmt.Errorf("update requires keys")
|
||
}
|
||
|
||
query := fmt.Sprintf("UPDATE `%s` SET %s WHERE %s", tableName, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
|
||
res, err := tx.Exec(query, args...)
|
||
if err != nil {
|
||
return fmt.Errorf("update error: %v", err)
|
||
}
|
||
if affected, err := res.RowsAffected(); err == nil && affected == 0 {
|
||
return fmt.Errorf("更新未生效：未匹配到任何行")
|
||
}
|
||
}
|
||
|
||
// 3. Inserts
|
||
for _, row := range changes.Inserts {
|
||
var cols []string
|
||
var placeholders []string
|
||
var args []interface{}
|
||
|
||
for k, v := range row {
|
||
cols = append(cols, fmt.Sprintf("`%s`", k))
|
||
placeholders = append(placeholders, "?")
|
||
args = append(args, normalizeMySQLDateTimeValue(v))
|
||
}
|
||
|
||
if len(cols) == 0 {
|
||
continue
|
||
}
|
||
|
||
query := fmt.Sprintf("INSERT INTO `%s` (%s) VALUES (%s)", tableName, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
|
||
res, err := tx.Exec(query, args...)
|
||
if err != nil {
|
||
return fmt.Errorf("insert error: %v", err)
|
||
}
|
||
if affected, err := res.RowsAffected(); err == nil && affected == 0 {
|
||
return fmt.Errorf("插入未生效：未影响任何行")
|
||
}
|
||
}
|
||
|
||
return tx.Commit()
|
||
}
|
||
|
||
func normalizeMySQLDateTimeValue(value interface{}) interface{} {
|
||
text, ok := value.(string)
|
||
if !ok {
|
||
return value
|
||
}
|
||
raw := strings.TrimSpace(text)
|
||
if raw == "" {
|
||
return value
|
||
}
|
||
|
||
cleaned := strings.ReplaceAll(raw, "+ ", "+")
|
||
cleaned = strings.ReplaceAll(cleaned, "- ", "-")
|
||
|
||
if len(cleaned) >= 19 && cleaned[10] == 'T' {
|
||
if strings.HasSuffix(cleaned, "Z") || hasTimezoneOffset(cleaned) {
|
||
if t, err := time.Parse(time.RFC3339Nano, cleaned); err == nil {
|
||
return formatMySQLDateTime(t)
|
||
}
|
||
if t, err := time.Parse(time.RFC3339, cleaned); err == nil {
|
||
return formatMySQLDateTime(t)
|
||
}
|
||
}
|
||
return strings.Replace(cleaned, "T", " ", 1)
|
||
}
|
||
|
||
if strings.Contains(cleaned, " ") && (strings.HasSuffix(cleaned, "Z") || hasTimezoneOffset(cleaned)) {
|
||
candidate := strings.Replace(cleaned, " ", "T", 1)
|
||
if t, err := time.Parse(time.RFC3339Nano, candidate); err == nil {
|
||
return formatMySQLDateTime(t)
|
||
}
|
||
if t, err := time.Parse(time.RFC3339, candidate); err == nil {
|
||
return formatMySQLDateTime(t)
|
||
}
|
||
}
|
||
|
||
return value
|
||
}
|
||
|
||
func hasTimezoneOffset(text string) bool {
|
||
pos := strings.LastIndexAny(text, "+-")
|
||
if pos < 0 || pos < 10 || pos+1 >= len(text) {
|
||
return false
|
||
}
|
||
offset := text[pos+1:]
|
||
if len(offset) == 5 && offset[2] == ':' {
|
||
return isAllDigits(offset[:2]) && isAllDigits(offset[3:])
|
||
}
|
||
if len(offset) == 4 {
|
||
return isAllDigits(offset)
|
||
}
|
||
return false
|
||
}
|
||
|
||
func isAllDigits(text string) bool {
|
||
if text == "" {
|
||
return false
|
||
}
|
||
for _, r := range text {
|
||
if r < '0' || r > '9' {
|
||
return false
|
||
}
|
||
}
|
||
return true
|
||
}
|
||
|
||
func formatMySQLDateTime(t time.Time) string {
|
||
base := t.Format("2006-01-02 15:04:05")
|
||
nanos := t.Nanosecond()
|
||
if nanos == 0 {
|
||
return base
|
||
}
|
||
micro := nanos / 1000
|
||
return fmt.Sprintf("%s.%06d", base, micro)
|
||
}
|
||
|
||
func (m *MySQLDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
|
||
query := fmt.Sprintf("SELECT TABLE_NAME, COLUMN_NAME, COLUMN_TYPE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = '%s'", dbName)
|
||
if dbName == "" {
|
||
return nil, fmt.Errorf("database name required for GetAllColumns")
|
||
}
|
||
|
||
data, _, err := m.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var cols []connection.ColumnDefinitionWithTable
|
||
for _, row := range data {
|
||
col := connection.ColumnDefinitionWithTable{
|
||
TableName: fmt.Sprintf("%v", row["TABLE_NAME"]),
|
||
Name: fmt.Sprintf("%v", row["COLUMN_NAME"]),
|
||
Type: fmt.Sprintf("%v", row["COLUMN_TYPE"]),
|
||
}
|
||
cols = append(cols, col)
|
||
}
|
||
return cols, nil
|
||
}
|