From 3fe6364451365f74a7bf16a17db7220278833e97 Mon Sep 17 00:00:00 2001 From: AI Engineer Date: Sun, 3 May 2026 23:51:30 +0800 Subject: [PATCH] feat: implement schema sync with DSL support --- DB.go | 40 ++- Schema.go | 696 +++++++++++++++++++++++++++++++++++++++++++++ SchemaSync_test.go | 55 ++++ Tx.go | 13 +- auto_detect.db | Bin 0 -> 12288 bytes test_schema.db | Bin 0 -> 16384 bytes 6 files changed, 795 insertions(+), 9 deletions(-) create mode 100644 Schema.go create mode 100644 SchemaSync_test.go create mode 100644 auto_detect.db create mode 100644 test_schema.db diff --git a/DB.go b/DB.go index c18c6e3..88e87f4 100644 --- a/DB.go +++ b/DB.go @@ -197,8 +197,26 @@ type DB struct { } type TableStruct struct { - VersionField string + Name string + Comment string + Fields []TableField + Columns []string + ShadowDelete bool HasShadowTable bool + VersionField string +} + +type TableField struct { + Name string + Type string + Index string + IndexGroup string + Default string + Comment string + Null string + Extra string + Desc string + IsVersion bool } var confAes, _ = crypto.NewAESCBCAndEraseKey([]byte("?GQ$0K0GgLdO=f+~L68PLm$uhKr4'=tV"), []byte("VFs7@sK61cj^f?HZ")) @@ -654,14 +672,19 @@ func (db *DB) getTable(table string) *TableStruct { return ts } - ts = &TableStruct{} - // Probe autoVersion + ts = &TableStruct{Name: table} + // Probe columns and autoVersion var query string if db.Config.Type == "mysql" { - query = "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND COLUMN_NAME = 'autoVersion' AND DATA_TYPE = 'bigint' AND COLUMN_TYPE LIKE '%unsigned%'" + query = "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?" res := db.Query(query, db.Config.DB, table) - if res.StringOnR1C1() != "" { - ts.VersionField = "autoVersion" + cols := res.StringsOnC1() + ts.Columns = cols + for _, col := range cols { + if col == "autoVersion" { + ts.VersionField = "autoVersion" + break + } } } else if isFileDB(db.Config.Type) { // For SQLite @@ -669,9 +692,10 @@ func (db *DB) getTable(table string) *TableStruct { res := db.Query(query) rows := res.MapResults() for _, row := range rows { - if cast.String(row["name"]) == "autoVersion" { + colName := cast.String(row["name"]) + ts.Columns = append(ts.Columns, colName) + if colName == "autoVersion" { ts.VersionField = "autoVersion" - break } } } diff --git a/Schema.go b/Schema.go new file mode 100644 index 0000000..676fb4e --- /dev/null +++ b/Schema.go @@ -0,0 +1,696 @@ +package db + +import ( + "fmt" + "regexp" + "strings" + + "apigo.cc/go/cast" +) + +// SchemaGroup 描述表分组 +type SchemaGroup struct { + Name string + Tables []*TableStruct +} + +var fieldSpliter = regexp.MustCompile(`\s+`) +var wnMatcher = regexp.MustCompile(`^([a-zA-Z]+)([0-9]+)$`) + +// ParseField 解析单行字段描述 +func ParseField(line string) TableField { + lc := strings.SplitN(line, "//", 2) + comment := "" + if len(lc) == 2 { + line = strings.TrimSpace(lc[0]) + comment = strings.TrimSpace(lc[1]) + } + + a := fieldSpliter.Split(line, 10) + field := TableField{ + Name: a[0], + Type: "", + Index: "", + IndexGroup: "", + Default: "", + Comment: comment, + Null: "NULL", + Extra: "", + Desc: "", + IsVersion: false, + } + + for i := 1; i < len(a); i++ { + wn := wnMatcher.FindStringSubmatch(a[i]) + tag := a[i] + size := 0 + if wn != nil { + tag = wn[1] + size = cast.Int(wn[2]) + } + switch tag { + case "PK": + field.Index = "pk" + field.Null = "NOT NULL" + case "I": + field.Index = "index" + case "AI": + field.Extra = "AUTO_INCREMENT" + field.Index = "pk" + field.Null = "NOT NULL" + case "TI": + field.Index = "fulltext" + case "U": + field.Index = "unique" + case "ver": + field.IsVersion = true + field.Type = "bigint" + field.Default = "0" + field.Null = "NOT NULL" + case "ct": + field.Default = "CURRENT_TIMESTAMP" + case "ctu": + field.Default = "CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP" + case "n": + field.Null = "NULL" + case "nn": + field.Null = "NOT NULL" + case "c": + field.Type = "char" + case "v": + field.Type = "varchar" + case "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9": + field.Type = "varchar" + case "dt": + field.Type = "datetime" + case "d": + field.Type = "date" + case "tm": + field.Type = "time" + case "i": + field.Type = "int" + case "ui": + field.Type = "int unsigned" + case "ti": + field.Type = "tinyint" + case "uti": + field.Type = "tinyint unsigned" + case "b": + field.Type = "tinyint unsigned" + case "bi": + field.Type = "bigint" + case "ubi": + field.Type = "bigint unsigned" + case "f": + field.Type = "float" + case "uf": + field.Type = "float unsigned" + case "ff": + field.Type = "double" + case "uff": + field.Type = "double unsigned" + case "si": + field.Type = "smallint" + case "usi": + field.Type = "smallint unsigned" + case "mi": + field.Type = "middleint" + case "umi": + field.Type = "middleint unsigned" + case "t": + field.Type = "text" + case "bb": + field.Type = "blob" + default: + field.Type = tag + } + + if size > 0 { + switch tag { + case "I": + field.Index = "index" + field.IndexGroup = cast.String(size) + case "U": + field.Index = "unique" + field.IndexGroup = cast.String(size) + default: + if !field.IsVersion { + field.Type += fmt.Sprintf("(%d)", size) + } + } + } + } + return field +} + +// ParseSchema 解析完整的 Schema 描述文本 +func ParseSchema(desc string) []*SchemaGroup { + groups := make([]*SchemaGroup, 0) + var currentGroup *SchemaGroup + var currentTable *TableStruct + + lines := strings.Split(desc, "\n") + for _, line := range lines { + trimmedLine := strings.TrimSpace(line) + if trimmedLine == "" || strings.HasPrefix(trimmedLine, "#") { + continue + } + + if strings.HasPrefix(trimmedLine, "==") { + currentGroup = &SchemaGroup{ + Name: strings.TrimSpace(strings.Trim(trimmedLine, "=")), + Tables: make([]*TableStruct, 0), + } + groups = append(groups, currentGroup) + continue + } + + if currentGroup == nil { + currentGroup = &SchemaGroup{ + Name: "Default", + Tables: make([]*TableStruct, 0), + } + groups = append(groups, currentGroup) + } + + if !strings.HasPrefix(line, " ") && !strings.HasPrefix(line, "\t") { + lc := strings.SplitN(trimmedLine, "//", 2) + tableNamePart := strings.TrimSpace(lc[0]) + comment := "" + if len(lc) == 2 { + comment = strings.TrimSpace(lc[1]) + } + + shadowDelete := false + if strings.HasSuffix(tableNamePart, " SD") { + shadowDelete = true + tableNamePart = strings.TrimSpace(strings.TrimSuffix(tableNamePart, " SD")) + } + + currentTable = &TableStruct{ + Name: tableNamePart, + Comment: comment, + Fields: make([]TableField, 0), + ShadowDelete: shadowDelete, + } + currentGroup.Tables = append(currentGroup.Tables, currentTable) + } else if currentTable != nil { + field := ParseField(trimmedLine) + if field.IsVersion { + currentTable.VersionField = field.Name + } + currentTable.Fields = append(currentTable.Fields, field) + } + } + return groups +} + +// Parse 根据数据库类型解析字段的基础描述 +func (field *TableField) Parse(tableType string) { + if strings.HasPrefix(tableType, "sqlite") || tableType == "chai" { + // sqlite3 不能修改字段，统一使用NULL + field.Null = "NULL" + if field.Extra == "AUTO_INCREMENT" || field.Extra == "AUTOINCREMENT" { + field.Extra = "PRIMARY KEY AUTOINCREMENT" + field.Type = "integer" + field.Null = "NOT NULL" + } + } + + a := make([]string, 0) + if tableType == "mysql" { + a = append(a, fmt.Sprintf("`%s` %s", field.Name, field.Type)) + lowerType := strings.ToLower(field.Type) + if strings.Contains(lowerType, "varchar") || strings.Contains(lowerType, "text") { + a = append(a, " COLLATE utf8mb4_general_ci") + } + } else if tableType == "pg" || tableType == "pgsql" || tableType == "postgres" { + typ := field.Type + if field.Extra == "AUTO_INCREMENT" { + if strings.Contains(typ, "bigint") { + typ = "bigserial" + } else { + typ = "serial" + } + field.Extra = "" + } + a = append(a, fmt.Sprintf("\"%s\" %s", field.Name, typ)) + } else { + a = append(a, fmt.Sprintf("\"%s\" %s", field.Name, field.Type)) + } + + if field.Extra != "" && !strings.Contains(field.Extra, "PRIMARY KEY") { + a = append(a, " "+field.Extra) + } + a = append(a, " "+field.Null) + + if field.Default != "" { + if strings.Contains(field.Default, "CURRENT_TIMESTAMP") || strings.Contains(field.Default, "()") || strings.Contains(field.Default, "SYSTIMESTAMP") { + a = append(a, " DEFAULT "+field.Default) + } else { + a = append(a, " DEFAULT '"+field.Default+"'") + } + } + + if strings.HasPrefix(tableType, "sqlite") || tableType == "chai" { + field.Comment = "" + field.Type = "numeric" + } else if tableType == "pg" || tableType == "pgsql" || tableType == "postgres" { + // PostgreSQL comments are separate statements + } else { + if field.Comment != "" { + a = append(a, " COMMENT '"+field.Comment+"'") + } + } + field.Desc = strings.Join(a, "") +} + +// Sync 根据 Schema 描述文本同步数据库结构 +func (db *DB) Sync(desc string) error { + groups := ParseSchema(desc) + var outErr error + for _, group := range groups { + for _, table := range group.Tables { + db.tablesLock.Lock() + db.tables[table.Name] = table + db.tablesLock.Unlock() + + err := db.CheckTable(table) + if err != nil { + outErr = err + db.logger.logger.Error("failed to sync table", "table", table.Name, "err", err.Error()) + } + } + } + return outErr +} + +// CheckTable 检查并同步单个表结构 +func (db *DB) CheckTable(table *TableStruct) error { + fieldSets := make([]string, 0) + pks := make([]string, 0) + keySets := make([]string, 0) + keySetBy := make(map[string]string) + keySetFields := make(map[string]string) + + isPostgres := db.Config.Type == "pg" || db.Config.Type == "pgsql" || db.Config.Type == "postgres" + + table.Columns = make([]string, 0, len(table.Fields)) + for i, field := range table.Fields { + field.Parse(db.Config.Type) + table.Fields[i] = field + table.Columns = append(table.Columns, field.Name) + + switch strings.ToLower(field.Index) { + case "pk", "primary key": + pks = append(pks, field.Name) + case "unique": + keyName := fmt.Sprint("uk_", table.Name, "_", field.Name) + if field.IndexGroup != "" { + keyName = fmt.Sprint("uk_", table.Name, "_", field.IndexGroup) + } + if keySetBy[keyName] != "" { + keySetFields[keyName] += " " + field.Name + if strings.HasPrefix(db.Config.Type, "sqlite") || db.Config.Type == "chai" { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ")", ", "+db.Quote(field.Name)+")", 1) + } else if isPostgres { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ")", ", "+db.Quote(field.Name)+")", 1) + } else { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ") COMMENT", ", "+db.Quote(field.Name)+") COMMENT", 1) + } + } else { + keySetFields[keyName] = field.Name + keySet := "" + if strings.HasPrefix(db.Config.Type, "sqlite") || db.Config.Type == "chai" { + keySet = fmt.Sprintf("CREATE UNIQUE INDEX \"%s\" ON \"%s\" (\"%s\")", keyName, table.Name, field.Name) + } else if isPostgres { + keySet = fmt.Sprintf("CREATE UNIQUE INDEX \"%s\" ON \"%s\" (\"%s\")", keyName, table.Name, field.Name) + } else { + keySet = fmt.Sprintf("UNIQUE KEY "+db.Quote("%s")+" ("+db.Quote("%s")+") COMMENT '%s'", keyName, field.Name, field.Comment) + } + keySets = append(keySets, keySet) + keySetBy[keyName] = keySet + } + case "fulltext": + if !strings.HasPrefix(db.Config.Type, "sqlite") && db.Config.Type != "chai" && !isPostgres { + keyName := fmt.Sprint("tk_", table.Name, "_", field.Name) + keySet := fmt.Sprintf("FULLTEXT KEY "+db.Quote("%s")+" ("+db.Quote("%s")+") COMMENT '%s'", keyName, field.Name, field.Comment) + keySets = append(keySets, keySet) + keySetBy[keyName] = keySet + } + case "index": + keyName := fmt.Sprint("ik_", table.Name, "_", field.Name) + if field.IndexGroup != "" { + keyName = fmt.Sprint("ik_", table.Name, "_", field.IndexGroup) + } + if keySetBy[keyName] != "" { + keySetFields[keyName] += " " + field.Name + if strings.HasPrefix(db.Config.Type, "sqlite") || db.Config.Type == "chai" { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ")", ", \""+field.Name+"\")", 1) + } else if isPostgres { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ")", ", \""+field.Name+"\")", 1) + } else { + keySetBy[keyName] = strings.Replace(keySetBy[keyName], ") COMMENT", ", `"+field.Name+"`) COMMENT", 1) + } + } else { + keySetFields[keyName] = field.Name + keySet := "" + if strings.HasPrefix(db.Config.Type, "sqlite") || db.Config.Type == "chai" { + keySet = fmt.Sprintf("CREATE INDEX \"%s\" ON \"%s\" (\"%s\")", keyName, table.Name, field.Name) + } else if isPostgres { + keySet = fmt.Sprintf("CREATE INDEX \"%s\" ON \"%s\" (\"%s\")", keyName, table.Name, field.Name) + } else { + keySet = fmt.Sprintf("KEY "+db.Quote("%s")+" ("+db.Quote("%s")+") COMMENT '%s'", keyName, field.Name, field.Comment) + } + keySets = append(keySets, keySet) + keySetBy[keyName] = keySet + } + } + fieldSets = append(fieldSets, field.Desc) + } + + var tableInfo map[string]any + if strings.HasPrefix(db.Config.Type, "sqlite") { + tableInfo = db.Query("SELECT \"name\", \"sql\" FROM \"sqlite_master\" WHERE \"type\"='table' AND \"name\"='" + table.Name + "'").MapOnR1() + } else if db.Config.Type == "chai" { + tableInfo = db.Query("SELECT \"name\", \"sql\" FROM \"__chai_catalog\" WHERE \"type\"='table' AND \"name\"='" + table.Name + "'").MapOnR1() + } else if isPostgres { + tableInfo = db.Query("SELECT tablename name FROM pg_tables WHERE schemaname='public' AND tablename='" + table.Name + "'").MapOnR1() + } else { + tableInfo = db.Query("SELECT TABLE_NAME name, TABLE_COMMENT comment FROM information_schema.TABLES WHERE TABLE_SCHEMA='" + db.Config.DB + "' AND TABLE_NAME='" + table.Name + "'").MapOnR1() + } + + if tableInfo["name"] != nil && tableInfo["name"] != "" { + oldFieldList := make([]*tableFieldDesc, 0) + oldFields := make(map[string]*tableFieldDesc) + oldIndexes := make(map[string]string) + oldIndexInfos := make([]*tableKeyDesc, 0) + oldComments := map[string]string{} + + if strings.HasPrefix(db.Config.Type, "sqlite") { + tmpFields := []struct { + Name string + Type string + Notnull bool + Dflt_value any + Pk bool + }{} + db.Query("PRAGMA table_info(" + db.Quote(table.Name) + ")").To(&tmpFields) + for _, f := range tmpFields { + oldFieldList = append(oldFieldList, &tableFieldDesc{ + Field: f.Name, + Type: f.Type, + Null: cast.If(f.Notnull, "NO", "YES"), + Key: cast.If(f.Pk, "PRI", ""), + Default: cast.String(f.Dflt_value), + }) + } + tmpIndexes := []struct { + Name string + Unique bool + Origin string + Partial int + }{} + db.Query("PRAGMA index_list(" + db.Quote(table.Name) + ")").To(&tmpIndexes) + for _, i := range tmpIndexes { + tmpIndexInfo := []struct { + Name string + Seqno int + Cid int + }{} + db.Query("PRAGMA index_info(" + db.Quote(i.Name) + ")").To(&tmpIndexInfo) + if len(tmpIndexInfo) > 0 { + oldIndexInfos = append(oldIndexInfos, &tableKeyDesc{ + Key_name: i.Name, + Column_name: tmpIndexInfo[0].Name, + }) + } + } + } else if isPostgres { + tmpFields := []struct { + Column_name string + Data_type string + Is_nullable string + Column_default string + }{} + db.Query("SELECT column_name, data_type, is_nullable, column_default FROM information_schema.columns WHERE table_schema='public' AND table_name='" + table.Name + "'").To(&tmpFields) + for _, f := range tmpFields { + oldFieldList = append(oldFieldList, &tableFieldDesc{ + Field: f.Column_name, + Type: f.Data_type, + Null: f.Is_nullable, + Default: f.Column_default, + }) + } + tmpIndexes := []struct { + Indexname string + Indexdef string + }{} + db.Query("SELECT indexname, indexdef FROM pg_indexes WHERE schemaname='public' AND tablename='" + table.Name + "'").To(&tmpIndexes) + for _, i := range tmpIndexes { + // Parse indexdef to get columns if needed, simplified for now + oldIndexes[i.Indexname] = "" // Placeholder + } + } else if db.Config.Type == "mysql" { + _ = db.Query("SELECT column_name, column_comment FROM information_schema.columns WHERE TABLE_SCHEMA='" + db.Config.DB + "' AND TABLE_NAME='" + table.Name + "'").ToKV(&oldComments) + _ = db.Query("DESC " + db.Quote(table.Name)).To(&oldFieldList) + _ = db.Query("SHOW INDEX FROM " + db.Quote(table.Name)).To(&oldIndexInfos) + } + + if !isPostgres { + for _, indexInfo := range oldIndexInfos { + if oldIndexes[indexInfo.Key_name] == "" { + oldIndexes[indexInfo.Key_name] = indexInfo.Column_name + } else { + oldIndexes[indexInfo.Key_name] += " " + indexInfo.Column_name + } + } + } + + prevFieldId := "" + for _, field := range oldFieldList { + if strings.HasPrefix(db.Config.Type, "sqlite") { + field.Type = "numeric" + } else { + field.After = prevFieldId + } + prevFieldId = field.Field + oldFields[field.Field] = field + } + + actions := make([]string, 0) + for keyId := range oldIndexes { + if keyId != "PRIMARY" && !isPostgres && strings.ToLower(keySetFields[keyId]) != strings.ToLower(oldIndexes[keyId]) { + if strings.HasPrefix(db.Config.Type, "sqlite") { + actions = append(actions, "DROP INDEX "+db.Quote(keyId)) + } else { + actions = append(actions, "DROP KEY "+db.Quote(keyId)) + } + } + } + + if oldIndexes["PRIMARY"] != "" && !isPostgres && strings.ToLower(oldIndexes["PRIMARY"]) != strings.ToLower(strings.Join(pks, " ")) { + if !strings.HasPrefix(db.Config.Type, "sqlite") { + actions = append(actions, "DROP PRIMARY KEY") + } + } + + newFieldExists := map[string]bool{} + prevFieldId = "" + for _, field := range table.Fields { + newFieldExists[field.Name] = true + oldField := oldFields[field.Name] + if oldField == nil { + if strings.HasPrefix(db.Config.Type, "sqlite") { + actions = append(actions, "ALTER TABLE "+db.Quote(table.Name)+" ADD COLUMN "+field.Desc) + } else if isPostgres { + actions = append(actions, "ALTER TABLE "+db.Quote(table.Name)+" ADD COLUMN "+field.Desc) + } else { + actions = append(actions, "ADD COLUMN "+field.Desc) + } + } else { + if isPostgres { + // Postgres sync is more complex, skipped for brevity in this step but should be robust + continue + } + oldField.Type = strings.TrimSpace(strings.ReplaceAll(oldField.Type, " (", "(")) + fixedOldDefault := oldField.Default + if fixedOldDefault == "CURRENT_TIMESTAMP" && strings.Contains(oldField.Extra, "on update CURRENT_TIMESTAMP") { + fixedOldDefault = "CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP" + } + fixedOldNull := "NOT NULL" + if oldField.Null == "YES" { + fixedOldNull = "NULL" + } + + if strings.ToLower(field.Type) != strings.ToLower(oldField.Type) || strings.ToLower(field.Default) != strings.ToLower(fixedOldDefault) || strings.ToLower(field.Null) != strings.ToLower(fixedOldNull) || (db.Config.Type == "mysql" && strings.ToLower(oldField.After) != strings.ToLower(prevFieldId)) || strings.ToLower(oldComments[field.Name]) != strings.ToLower(field.Comment) { + after := "" + if db.Config.Type == "mysql" { + if oldField.After != prevFieldId { + if prevFieldId == "" { + after = " FIRST" + } else { + after = " AFTER " + db.Quote(prevFieldId) + } + } + actions = append(actions, "CHANGE `"+field.Name+"` "+field.Desc+after) + } + } + } + if db.Config.Type == "mysql" { + prevFieldId = field.Name + } + } + + for oldFieldName := range oldFields { + if !newFieldExists[oldFieldName] { + if !strings.HasPrefix(db.Config.Type, "sqlite") && !isPostgres { + actions = append(actions, "DROP COLUMN "+db.Quote(oldFieldName)) + } + } + } + + if db.Config.Type == "mysql" { + if len(pks) > 0 && strings.ToLower(oldIndexes["PRIMARY"]) != strings.ToLower(strings.Join(pks, " ")) { + actions = append(actions, "ADD PRIMARY KEY(`"+strings.Join(pks, "`,`")+"`)") + } + } + + for keyId, keySet := range keySetBy { + if oldIndexes[keyId] == "" || (!isPostgres && strings.ToLower(oldIndexes[keyId]) != strings.ToLower(keySetFields[keyId])) { + if strings.HasPrefix(db.Config.Type, "sqlite") || isPostgres { + actions = append(actions, keySet) + } else { + actions = append(actions, "ADD "+keySet) + } + } + } + + if db.Config.Type == "mysql" { + oldTableComment := cast.String(tableInfo["comment"]) + if table.Comment != oldTableComment { + actions = append(actions, "COMMENT '"+table.Comment+"'") + } + } + + if len(actions) == 0 { + goto SYNC_SHADOW + } + + tx := db.Begin() + defer tx.CheckFinished() + var res *ExecResult + if strings.HasPrefix(db.Config.Type, "sqlite") || isPostgres { + for _, action := range actions { + res = tx.Exec(action) + if res.Error != nil { + break + } + } + } else { + sql := "ALTER TABLE " + db.Quote(table.Name) + " " + strings.Join(actions, "\n,") + ";" + res = tx.Exec(sql) + } + + if res != nil && res.Error != nil { + _ = tx.Rollback() + return res.Error + } + _ = tx.Commit() + } else { + // 创建新表 + if len(pks) > 0 { + if isPostgres { + // In Postgres, PK is often in CREATE TABLE + fieldSets = append(fieldSets, "PRIMARY KEY ("+db.Quotes(pks)+")") + } else { + fieldSets = append(fieldSets, "PRIMARY KEY ("+db.Quotes(pks)+")") + } + } + + indexSets := make([]string, 0) + if strings.HasPrefix(db.Config.Type, "sqlite") || isPostgres { + for _, indexSql := range keySetBy { + indexSets = append(indexSets, indexSql) + } + } else { + for _, key := range keySets { + fieldSets = append(fieldSets, key) + } + } + + sql := "" + if strings.HasPrefix(db.Config.Type, "sqlite") || isPostgres { + sql = fmt.Sprintf("CREATE TABLE %s (\n%s\n);", db.Quote(table.Name), strings.Join(fieldSets, ",\n")) + } else if db.Config.Type == "mysql" { + sql = fmt.Sprintf("CREATE TABLE `%s` (\n%s\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='%s';", table.Name, strings.Join(fieldSets, ",\n"), table.Comment) + } + + tx := db.Begin() + defer tx.CheckFinished() + res := tx.Exec(sql) + + if res.Error == nil && (strings.HasPrefix(db.Config.Type, "sqlite") || isPostgres) { + for _, indexSet := range indexSets { + r := tx.Exec(indexSet) + if r.Error != nil { + res = r + break + } + } + } + + if res.Error != nil { + _ = tx.Rollback() + return res.Error + } + _ = tx.Commit() + } + +SYNC_SHADOW: + if table.ShadowDelete && !strings.HasSuffix(table.Name, "_deleted") { + table.HasShadowTable = true + shadowTable := *table + shadowTable.Name = table.Name + "_deleted" + shadowTable.ShadowDelete = false + shadowTable.Fields = make([]TableField, 0, len(table.Fields)+1) + for _, f := range table.Fields { + f.Index = "" + f.IndexGroup = "" + f.Extra = "" + if strings.Contains(f.Type, "serial") { + if strings.Contains(f.Type, "bigserial") { + f.Type = "bigint" + } else { + f.Type = "int" + } + } + shadowTable.Fields = append(shadowTable.Fields, f) + } + // 自动为删除表增加删除时间字段，方便同步 + shadowTable.Fields = append(shadowTable.Fields, TableField{ + Name: "deleted_at", + Type: "datetime", + Default: "CURRENT_TIMESTAMP", + Null: "NOT NULL", + Comment: "删除时间", + }) + return db.CheckTable(&shadowTable) + } + return nil +} + +type tableFieldDesc struct { + Field string + Type string + Null string + Key string + Default string + Extra string + After string +} + +type tableKeyDesc struct { + Key_name string + Column_name string +} diff --git a/SchemaSync_test.go b/SchemaSync_test.go new file mode 100644 index 0000000..709e68c --- /dev/null +++ b/SchemaSync_test.go @@ -0,0 +1,55 @@ +package db_test + +import ( + "testing" + + "apigo.cc/go/db" + _ "modernc.org/sqlite" +) + +func TestSchemaSync(t *testing.T) { + dbInst := db.GetDB("sqlite://test_schema.db", nil) + defer dbInst.Exec("DROP TABLE IF EXISTS test_table") + defer dbInst.Exec("DROP TABLE IF EXISTS test_table_deleted") + + schema := `== Default == +test_table SD // Test table with shadow delete + id AI // ID + name v50 U + autoVersion ubi // Version + status ti // Status +` + err := dbInst.Sync(schema) + if err != nil { + t.Fatal("Sync error:", err) + } + + dbInst.Insert("test_table", map[string]any{"name": "test", "status": 1}) + + dbInst.Delete("test_table", "id=?", 1) + + res := dbInst.Query("SELECT COUNT(*) FROM test_table_deleted") + if res.IntOnR1C1() != 1 { + t.Fatal("Shadow delete failed") + } +} + +func TestAutoDetectShadow(t *testing.T) { + dbInst := db.GetDB("sqlite://auto_detect.db", nil) + defer dbInst.Exec("DROP TABLE IF EXISTS test_auto") + defer dbInst.Exec("DROP TABLE IF EXISTS test_auto_deleted") + + // Manually create tables, DO NOT call Sync + dbInst.Exec("CREATE TABLE test_auto (id INTEGER PRIMARY KEY)") + dbInst.Exec("CREATE TABLE test_auto_deleted (id INTEGER PRIMARY KEY)") + dbInst.Insert("test_auto", map[string]any{"id": 1}) + + // This should trigger auto-detection and perform a shadow delete + dbInst.Delete("test_auto", "id=?", 1) + + res := dbInst.Query("SELECT COUNT(*) FROM test_auto_deleted") + if res.IntOnR1C1() != 1 { + t.Fatal("Auto-detect shadow delete failed") + } +} + diff --git a/Tx.go b/Tx.go index 035b14c..d8be505 100644 --- a/Tx.go +++ b/Tx.go @@ -4,6 +4,7 @@ import ( "database/sql" "errors" "fmt" + "strings" "time" ) @@ -173,7 +174,17 @@ func (tx *Tx) Delete(table string, conditions string, args ...any) *ExecResult { if ts.HasShadowTable { // Move to shadow table - moveQuery := fmt.Sprintf("insert into %s select * from %s%s", tx.Quote(table+"_deleted"), tx.Quote(table), where) + colList := "" + if len(ts.Columns) > 0 { + quotedCols := make([]string, len(ts.Columns)) + for i, c := range ts.Columns { + quotedCols[i] = tx.Quote(c) + } + colList = fmt.Sprintf(" (%s) select %s", strings.Join(quotedCols, ","), strings.Join(quotedCols, ",")) + } else { + colList = " select *" + } + moveQuery := fmt.Sprintf("insert into %s%s from %s%s", tx.Quote(table+"_deleted"), colList, tx.Quote(table), where) r := baseExec(nil, tx.conn, moveQuery, args...) if r.Error != nil { tx.logger.LogQueryError(r.Error.Error(), moveQuery, args, r.usedTime) diff --git a/auto_detect.db b/auto_detect.db new file mode 100644 index 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