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!106 feat：数据同步支持唯一键冲突策略

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* refactor：sql同步
* fix: 表格右键导出菜单换行符修复
* feat：数据同步支持唯一键冲突策略
This commit is contained in:
zongyangleo
2024-03-01 04:03:03 +00:00
committed by Coder慌
parent f93231da61
commit 76475e807e
38 changed files with 1117 additions and 257 deletions
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174
server/internal/db/dbm/postgres/dialect.go
View File

@@ -25,8 +25,8 @@ type PgsqlDialect struct {
dc *dbi.DbConn
}
func (md *PgsqlDialect) GetDbServer() (*dbi.DbServer, error) {
_, res, err := md.dc.Query("SELECT version() as server_version")
func (pd *PgsqlDialect) GetDbServer() (*dbi.DbServer, error) {
_, res, err := pd.dc.Query("SELECT version() as server_version")
if err != nil {
return nil, err
}
@@ -36,8 +36,8 @@ func (md *PgsqlDialect) GetDbServer() (*dbi.DbServer, error) {
return ds, nil
}
func (md *PgsqlDialect) GetDbNames() ([]string, error) {
_, res, err := md.dc.Query("SELECT datname AS dbname FROM pg_database WHERE datistemplate = false AND has_database_privilege(datname, 'CONNECT')")
func (pd *PgsqlDialect) GetDbNames() ([]string, error) {
_, res, err := pd.dc.Query("SELECT datname AS dbname FROM pg_database WHERE datistemplate = false AND has_database_privilege(datname, 'CONNECT')")
if err != nil {
return nil, err
}
@@ -51,8 +51,8 @@ func (md *PgsqlDialect) GetDbNames() ([]string, error) {
}
// 获取表基础元信息, 如表名等
func (md *PgsqlDialect) GetTables() ([]dbi.Table, error) {
_, res, err := md.dc.Query(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_TABLE_INFO_KEY))
func (pd *PgsqlDialect) GetTables() ([]dbi.Table, error) {
_, res, err := pd.dc.Query(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_TABLE_INFO_KEY))
if err != nil {
return nil, err
}
@@ -72,13 +72,13 @@ func (md *PgsqlDialect) GetTables() ([]dbi.Table, error) {
}
// 获取列元信息, 如列名等
func (md *PgsqlDialect) GetColumns(tableNames ...string) ([]dbi.Column, error) {
dbType := md.dc.Info.Type
func (pd *PgsqlDialect) GetColumns(tableNames ...string) ([]dbi.Column, error) {
dbType := pd.dc.Info.Type
tableName := strings.Join(collx.ArrayMap[string, string](tableNames, func(val string) string {
return fmt.Sprintf("'%s'", dbType.RemoveQuote(val))
}), ",")
_, res, err := md.dc.Query(fmt.Sprintf(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_COLUMN_MA_KEY), tableName))
_, res, err := pd.dc.Query(fmt.Sprintf(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_COLUMN_MA_KEY), tableName))
if err != nil {
return nil, err
}
@@ -100,8 +100,8 @@ func (md *PgsqlDialect) GetColumns(tableNames ...string) ([]dbi.Column, error) {
return columns, nil
}
func (md *PgsqlDialect) GetPrimaryKey(tablename string) (string, error) {
columns, err := md.GetColumns(tablename)
func (pd *PgsqlDialect) GetPrimaryKey(tablename string) (string, error) {
columns, err := pd.GetColumns(tablename)
if err != nil {
return "", err
}
@@ -118,8 +118,8 @@ func (md *PgsqlDialect) GetPrimaryKey(tablename string) (string, error) {
}
// 获取表索引信息
func (md *PgsqlDialect) GetTableIndex(tableName string) ([]dbi.Index, error) {
_, res, err := md.dc.Query(fmt.Sprintf(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_INDEX_INFO_KEY), tableName))
func (pd *PgsqlDialect) GetTableIndex(tableName string) ([]dbi.Index, error) {
_, res, err := pd.dc.Query(fmt.Sprintf(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_INDEX_INFO_KEY), tableName))
if err != nil {
return nil, err
}
@@ -155,17 +155,14 @@ func (md *PgsqlDialect) GetTableIndex(tableName string) ([]dbi.Index, error) {
}
// 获取建表ddl
func (md *PgsqlDialect) GetTableDDL(tableName string) (string, error) {
_, err := md.dc.Exec(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_TABLE_DDL_KEY))
func (pd *PgsqlDialect) GetTableDDL(tableName string) (string, error) {
_, err := pd.dc.Exec(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_TABLE_DDL_KEY))
if err != nil {
return "", err
}
_, schemaRes, _ := md.dc.Query("select current_schema() as schema")
schemaName := schemaRes[0]["schema"].(string)
ddlSql := fmt.Sprintf("select showcreatetable('%s','%s') as sql", schemaName, tableName)
_, res, err := md.dc.Query(ddlSql)
ddlSql := fmt.Sprintf("select showcreatetable('%s','%s') as sql", pd.currentSchema(), tableName)
_, res, err := pd.dc.Query(ddlSql)
if err != nil {
return "", err
}
@@ -174,9 +171,9 @@ func (md *PgsqlDialect) GetTableDDL(tableName string) (string, error) {
}
// 获取pgsql当前连接的库可访问的schemaNames
func (md *PgsqlDialect) GetSchemas() ([]string, error) {
func (pd *PgsqlDialect) GetSchemas() ([]string, error) {
sql := dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_DB_SCHEMAS)
_, res, err := md.dc.Query(sql)
_, res, err := pd.dc.Query(sql)
if err != nil {
return nil, err
}
@@ -188,11 +185,11 @@ func (md *PgsqlDialect) GetSchemas() ([]string, error) {
}
// GetDbProgram 获取数据库程序模块，用于数据库备份与恢复
func (md *PgsqlDialect) GetDbProgram() (dbi.DbProgram, error) {
return nil, fmt.Errorf("该数据库类型不支持数据库备份与恢复: %v", md.dc.Info.Type)
func (pd *PgsqlDialect) GetDbProgram() (dbi.DbProgram, error) {
return nil, fmt.Errorf("该数据库类型不支持数据库备份与恢复: %v", pd.dc.Info.Type)
}
func (md *PgsqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any) (int64, error) {
func (pd *PgsqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any, duplicateStrategy int) (int64, error) {
// 执行批量insert sql，跟mysql一样 pg或高斯支持批量insert语法
// insert into table_name (column1, column2, ...) values (value1, value2, ...), (value1, value2, ...), ...
@@ -212,14 +209,99 @@ func (md *PgsqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []stri
placeholders = append(placeholders, "("+strings.Join(placeholder, ", ")+")")
}
sqlStr := fmt.Sprintf("insert into %s (%s) values %s", md.dc.Info.Type.QuoteIdentifier(tableName), strings.Join(columns, ","), strings.Join(placeholders, ", "))
// 根据冲突策略生成后缀
suffix := ""
if pd.dc.Info.Type == dbi.DbTypeGauss {
// 高斯db使用ON DUPLICATE KEY UPDATE 语法参考 https://support.huaweicloud.com/distributed-devg-v3-gaussdb/gaussdb-12-0607.html#ZH-CN_TOPIC_0000001633948138
suffix = pd.gaussOnDuplicateStrategySql(duplicateStrategy, tableName, columns)
} else {
// pgsql 默认使用 on conflict 语法参考 http://www.postgres.cn/docs/12/sql-insert.html
// vastbase语法参考 https://docs.vastdata.com.cn/zh/docs/VastbaseE100Ver3.0.0/doc/SQL%E8%AF%AD%E6%B3%95/INSERT.html
// kingbase语法参考 https://help.kingbase.com.cn/v8/development/sql-plsql/sql/SQL_Statements_9.html#insert
suffix = pd.pgsqlOnDuplicateStrategySql(duplicateStrategy, tableName, columns)
}
sqlStr := fmt.Sprintf("insert into %s (%s) values %s %s", pd.dc.Info.Type.QuoteIdentifier(tableName), strings.Join(columns, ","), strings.Join(placeholders, ", "), suffix)
// 执行批量insert sql
return md.dc.TxExec(tx, sqlStr, args...)
return pd.dc.TxExec(tx, sqlStr, args...)
}
func (md *PgsqlDialect) GetDataConverter() dbi.DataConverter {
return new(DataConverter)
// pgsql默认唯一键冲突策略
func (pd PgsqlDialect) pgsqlOnDuplicateStrategySql(duplicateStrategy int, tableName string, columns []string) string {
suffix := ""
if duplicateStrategy == dbi.DuplicateStrategyIgnore {
suffix = " \n on conflict do nothing"
} else if duplicateStrategy == dbi.DuplicateStrategyUpdate {
// 生成 on conflict () do update set column1 = excluded.column1, column2 = excluded.column2, ...
var updateColumns []string
for _, col := range columns {
updateColumns = append(updateColumns, fmt.Sprintf("%s = excluded.%s", col, col))
}
// 查询唯一键名,拼接冲突sql
_, keyRes, _ := pd.dc.Query("SELECT constraint_name FROM information_schema.table_constraints WHERE constraint_schema = $1 AND table_name = $2 AND constraint_type in ('PRIMARY KEY', 'UNIQUE') ", pd.currentSchema(), tableName)
if len(keyRes) > 0 {
for _, re := range keyRes {
key := anyx.ToString(re["constraint_name"])
if key != "" {
suffix += fmt.Sprintf(" \n on conflict on constraint %s do update set %s \n", key, strings.Join(updateColumns, ", "))
}
}
}
}
return suffix
}
// 高斯db唯一键冲突策略,使用ON DUPLICATE KEY UPDATE 参考：https://support.huaweicloud.com/distributed-devg-v3-gaussdb/gaussdb-12-0607.html#ZH-CN_TOPIC_0000001633948138
func (pd PgsqlDialect) gaussOnDuplicateStrategySql(duplicateStrategy int, tableName string, columns []string) string {
suffix := ""
if duplicateStrategy == dbi.DuplicateStrategyIgnore {
suffix = " \n ON DUPLICATE KEY UPDATE NOTHING"
} else if duplicateStrategy == dbi.DuplicateStrategyUpdate {
// 查出表里的唯一键涉及的字段
var uniqueColumns []string
indexs, err := pd.GetTableIndex(tableName)
if err == nil {
for _, index := range indexs {
if index.IsUnique {
cols := strings.Split(index.ColumnName, ",")
for _, col := range cols {
if !collx.ArrayContains(uniqueColumns, strings.ToLower(col)) {
uniqueColumns = append(uniqueColumns, strings.ToLower(col))
}
}
}
}
}
suffix = " \n ON DUPLICATE KEY UPDATE "
for i, col := range columns {
// ON DUPLICATE KEY UPDATE语句不支持更新唯一键字段，所以得去掉
if !collx.ArrayContains(uniqueColumns, pd.dc.Info.Type.RemoveQuote(strings.ToLower(col))) {
suffix += fmt.Sprintf("%s = excluded.%s", col, col)
if i < len(columns)-1 {
suffix += ", "
}
}
}
}
return suffix
}
// 从连接信息中获取数据库和schema信息
func (pd *PgsqlDialect) currentSchema() string {
dbName := pd.dc.Info.Database
schema := ""
arr := strings.Split(dbName, "/")
if len(arr) == 2 {
schema = arr[1]
}
return schema
}
func (pd *PgsqlDialect) GetDataConverter() dbi.DataConverter {
return converter
}
var (
@@ -231,6 +313,8 @@ var (
dateRegexp = regexp.MustCompile(`(?i)date`)
// 时间类型
timeRegexp = regexp.MustCompile(`(?i)time`)
converter = new(DataConverter)
)
type DataConverter struct {
@@ -272,19 +356,33 @@ func (dc *DataConverter) FormatData(dbColumnValue any, dataType dbi.DataType) st
}
func (dc *DataConverter) ParseData(dbColumnValue any, dataType dbi.DataType) any {
// 如果dataType是datetime而dbColumnValue是string类型，则需要转换为time.Time类型
_, ok := dbColumnValue.(string)
if dataType == dbi.DataTypeDateTime && ok {
res, _ := time.Parse(time.RFC3339, anyx.ToString(dbColumnValue))
return res
}
if dataType == dbi.DataTypeDate && ok {
res, _ := time.Parse(time.DateOnly, anyx.ToString(dbColumnValue))
return res
}
if dataType == dbi.DataTypeTime && ok {
res, _ := time.Parse(time.TimeOnly, anyx.ToString(dbColumnValue))
return res
}
return dbColumnValue
}
func (md *PgsqlDialect) IsGauss() bool {
return strings.Contains(md.dc.Info.Params, "gauss")
func (pd *PgsqlDialect) IsGauss() bool {
return strings.Contains(pd.dc.Info.Params, "gauss")
}
func (md *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
func (pd *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
tableName := copy.TableName
// 生成新表名,为老表明+_copy_时间戳
newTableName := tableName + "_copy_" + time.Now().Format("20060102150405")
// 执行根据旧表创建新表
_, err := md.dc.Exec(fmt.Sprintf("create table %s (like %s)", newTableName, tableName))
_, err := pd.dc.Exec(fmt.Sprintf("create table %s (like %s)", newTableName, tableName))
if err != nil {
return err
}
@@ -292,12 +390,12 @@ func (md *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
// 复制数据
if copy.CopyData {
go func() {
_, _ = md.dc.Exec(fmt.Sprintf("insert into %s select * from %s", newTableName, tableName))
_, _ = pd.dc.Exec(fmt.Sprintf("insert into %s select * from %s", newTableName, tableName))
}()
}
// 查询旧表的自增字段名 重新设置新表的序列序列器
_, res, err := md.dc.Query(fmt.Sprintf("select column_name from information_schema.columns where table_name = '%s' and column_default like 'nextval%%'", tableName))
_, res, err := pd.dc.Query(fmt.Sprintf("select column_name from information_schema.columns where table_name = '%s' and column_default like 'nextval%%'", tableName))
if err != nil {
return err
}
@@ -307,7 +405,7 @@ func (md *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
if colName != "" {
// 查询自增列当前最大值
_, maxRes, err := md.dc.Query(fmt.Sprintf("select max(%s) max_val from %s", colName, tableName))
_, maxRes, err := pd.dc.Query(fmt.Sprintf("select max(%s) max_val from %s", colName, tableName))
if err != nil {
return err
}
@@ -323,12 +421,12 @@ func (md *PgsqlDialect) CopyTable(copy *dbi.DbCopyTable) error {
newSeqName := fmt.Sprintf("%s_%s_copy_seq", newTableName, colName)
// 创建自增序列，当前最大值为旧表最大值
_, err = md.dc.Exec(fmt.Sprintf("CREATE SEQUENCE %s START %d INCREMENT 1", newSeqName, maxVal))
_, err = pd.dc.Exec(fmt.Sprintf("CREATE SEQUENCE %s START %d INCREMENT 1", newSeqName, maxVal))
if err != nil {
return err
}
// 将新表的自增主键序列与主键列相关联
_, err = md.dc.Exec(fmt.Sprintf("alter table %s alter column %s set default nextval('%s')", newTableName, colName, newSeqName))
_, err = pd.dc.Exec(fmt.Sprintf("alter table %s alter column %s set default nextval('%s')", newTableName, colName, newSeqName))
if err != nil {
return err
}

5
server/internal/db/dbm/postgres/meta.go
View File

@@ -20,8 +20,9 @@ func init() {
dbi.Register(dbi.DbTypeKingbaseEs, meta)
dbi.Register(dbi.DbTypeVastbase, meta)
gauss := new(PostgresMeta)
gauss.Param = "dbtype=gauss"
gauss := &PostgresMeta{
Param: "dbtype=gauss",
}
dbi.Register(dbi.DbTypeGauss, gauss)
}