frps端同步frpc2.4-LTS的全套代码库的设计逻辑

db-history.go

@@ -0,0 +1,87 @@
+package main
+
+// ============================================================
+// db-history.go - Schema 版本声明与字段映射（frps 版）
+// ============================================================
+
+type SchemaVersionDef struct {
+	Version   string
+	TableName string
+	Columns   map[string]ColumnDef
+}
+
+type ColumnDef struct {
+	Type    string
+	NotNull bool
+	Default string
+	Primary bool
+}
+
+var schemaHistory = []SchemaVersionDef{
+	// v1：frps 初始版本（与 2.0-lts 兼容）
+	{
+		Version:   "v1",
+		TableName: "global_config",
+		Columns: map[string]ColumnDef{
+			"id":           {Type: "INTEGER", Primary: true},
+			"bind_port":    {Type: "INTEGER", NotNull: true, Default: "9358"},
+			"token":        {Type: "TEXT", NotNull: true, Default: "'CHANGE_ME'"},
+			"log_level":    {Type: "TEXT", NotNull: true, Default: "'info'"},
+			"log_max_days": {Type: "INTEGER", NotNull: true, Default: "3"},
+			"tcp_mux":      {Type: "INTEGER", NotNull: true, Default: "1"},
+			"updated_at":   {Type: "DATETIME", Default: "CURRENT_TIMESTAMP"},
+		},
+	},
+	// v2：当前版本（与 v1 相同，保留扩展）
+	{
+		Version:   "v2",
+		TableName: "global_config",
+		Columns: map[string]ColumnDef{
+			"id":           {Type: "INTEGER", Primary: true},
+			"bind_port":    {Type: "INTEGER", NotNull: true, Default: "9358"},
+			"token":        {Type: "TEXT", NotNull: true, Default: "'CHANGE_ME'"},
+			"log_level":    {Type: "TEXT", NotNull: true, Default: "'info'"},
+			"log_max_days": {Type: "INTEGER", NotNull: true, Default: "3"},
+			"tcp_mux":      {Type: "INTEGER", NotNull: true, Default: "1"},
+			"updated_at":   {Type: "DATETIME", Default: "CURRENT_TIMESTAMP"},
+		},
+	},
+}
+
+func getSchemaDef(version string) *SchemaVersionDef {
+	for _, def := range schemaHistory {
+		if def.Version == version {
+			return &def
+		}
+	}
+	return nil
+}
+
+func getLatestSchemaDef() *SchemaVersionDef {
+	if len(schemaHistory) == 0 {
+		return nil
+	}
+	return &schemaHistory[len(schemaHistory)-1]
+}
+
+func schemaVersionsEqual(v1, v2 *SchemaVersionDef) bool {
+	if v1 == nil || v2 == nil {
+		return false
+	}
+	if v1.TableName != v2.TableName {
+		return false
+	}
+	if len(v1.Columns) != len(v2.Columns) {
+		return false
+	}
+	for name, col1 := range v1.Columns {
+		col2, ok := v2.Columns[name]
+		if !ok {
+			return false
+		}
+		if col1.Type != col2.Type || col1.NotNull != col2.NotNull || col1.Default != col2.Default {
+			return false
+		}
+	}
+	return true
+}