mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-04 08:20:25 +08:00
fix: 机器文件下载问题修复&dbm重构
This commit is contained in:
meilin.huang
259
server/internal/db/dbm/postgres/dialect.go
Normal file
259
server/internal/db/dbm/postgres/dialect.go
Normal file
@@ -0,0 +1,259 @@
|
||||
package postgres
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
"fmt"
|
||||
"mayfly-go/internal/db/dbm/dbi"
|
||||
"mayfly-go/pkg/errorx"
|
||||
"mayfly-go/pkg/utils/anyx"
|
||||
"regexp"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
PGSQL_META_FILE = "metasql/pgsql_meta.sql"
|
||||
PGSQL_DB_SCHEMAS = "PGSQL_DB_SCHEMAS"
|
||||
PGSQL_TABLE_INFO_KEY = "PGSQL_TABLE_INFO"
|
||||
PGSQL_INDEX_INFO_KEY = "PGSQL_INDEX_INFO"
|
||||
PGSQL_COLUMN_MA_KEY = "PGSQL_COLUMN_MA"
|
||||
PGSQL_TABLE_DDL_KEY = "PGSQL_TABLE_DDL_FUNC"
|
||||
)
|
||||
|
||||
type PgsqlDialect struct {
|
||||
dc *dbi.DbConn
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) GetDbServer() (*dbi.DbServer, error) {
|
||||
_, res, err := pd.dc.Query("SHOW server_version")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ds := &dbi.DbServer{
|
||||
Version: anyx.ConvString(res[0]["server_version"]),
|
||||
}
|
||||
return ds, nil
|
||||
}
|
||||
|
||||
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
|
||||
}
|
||||
|
||||
databases := make([]string, 0)
|
||||
for _, re := range res {
|
||||
databases = append(databases, anyx.ConvString(re["dbname"]))
|
||||
}
|
||||
|
||||
return databases, nil
|
||||
}
|
||||
|
||||
// 获取表基础元信息, 如表名等
|
||||
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
|
||||
}
|
||||
|
||||
tables := make([]dbi.Table, 0)
|
||||
for _, re := range res {
|
||||
tables = append(tables, dbi.Table{
|
||||
TableName: re["tableName"].(string),
|
||||
TableComment: anyx.ConvString(re["tableComment"]),
|
||||
CreateTime: anyx.ConvString(re["createTime"]),
|
||||
TableRows: anyx.ConvInt(re["tableRows"]),
|
||||
DataLength: anyx.ConvInt64(re["dataLength"]),
|
||||
IndexLength: anyx.ConvInt64(re["indexLength"]),
|
||||
})
|
||||
}
|
||||
return tables, nil
|
||||
}
|
||||
|
||||
// 获取列元信息, 如列名等
|
||||
func (pd *PgsqlDialect) GetColumns(tableNames ...string) ([]dbi.Column, error) {
|
||||
tableName := ""
|
||||
for i := 0; i < len(tableNames); i++ {
|
||||
if i != 0 {
|
||||
tableName = tableName + ", "
|
||||
}
|
||||
tableName = tableName + "'" + tableNames[i] + "'"
|
||||
}
|
||||
|
||||
_, res, err := pd.dc.Query(fmt.Sprintf(dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_COLUMN_MA_KEY), tableName))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
columns := make([]dbi.Column, 0)
|
||||
for _, re := range res {
|
||||
columns = append(columns, dbi.Column{
|
||||
TableName: re["tableName"].(string),
|
||||
ColumnName: re["columnName"].(string),
|
||||
ColumnType: anyx.ConvString(re["columnType"]),
|
||||
ColumnComment: anyx.ConvString(re["columnComment"]),
|
||||
Nullable: anyx.ConvString(re["nullable"]),
|
||||
ColumnKey: anyx.ConvString(re["columnKey"]),
|
||||
ColumnDefault: anyx.ConvString(re["columnDefault"]),
|
||||
NumScale: anyx.ConvString(re["numScale"]),
|
||||
})
|
||||
}
|
||||
return columns, nil
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) GetPrimaryKey(tablename string) (string, error) {
|
||||
columns, err := pd.GetColumns(tablename)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
if len(columns) == 0 {
|
||||
return "", errorx.NewBiz("[%s] 表不存在", tablename)
|
||||
}
|
||||
for _, v := range columns {
|
||||
if v.ColumnKey == "PRI" {
|
||||
return v.ColumnName, nil
|
||||
}
|
||||
}
|
||||
|
||||
return columns[0].ColumnName, nil
|
||||
}
|
||||
|
||||
// 获取表索引信息
|
||||
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
|
||||
}
|
||||
|
||||
indexs := make([]dbi.Index, 0)
|
||||
for _, re := range res {
|
||||
indexs = append(indexs, dbi.Index{
|
||||
IndexName: re["indexName"].(string),
|
||||
ColumnName: anyx.ConvString(re["columnName"]),
|
||||
IndexType: anyx.ConvString(re["IndexType"]),
|
||||
IndexComment: anyx.ConvString(re["indexComment"]),
|
||||
NonUnique: anyx.ConvInt(re["nonUnique"]),
|
||||
SeqInIndex: anyx.ConvInt(re["seqInIndex"]),
|
||||
})
|
||||
}
|
||||
// 把查询结果以索引名分组，索引字段以逗号连接
|
||||
result := make([]dbi.Index, 0)
|
||||
key := ""
|
||||
for _, v := range indexs {
|
||||
// 当前的索引名
|
||||
in := v.IndexName
|
||||
if key == in {
|
||||
// 索引字段已根据名称和顺序排序，故取最后一个即可
|
||||
i := len(result) - 1
|
||||
// 同索引字段以逗号连接
|
||||
result[i].ColumnName = result[i].ColumnName + "," + v.ColumnName
|
||||
} else {
|
||||
key = in
|
||||
result = append(result, v)
|
||||
}
|
||||
}
|
||||
return result, nil
|
||||
}
|
||||
|
||||
// 获取建表ddl
|
||||
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, _ := pd.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 := pd.dc.Query(ddlSql)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return res[0]["sql"].(string), nil
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) WalkTableRecord(tableName string, walkFn dbi.WalkQueryRowsFunc) error {
|
||||
return pd.dc.WalkQueryRows(context.Background(), fmt.Sprintf("SELECT * FROM %s", tableName), walkFn)
|
||||
}
|
||||
|
||||
// 获取pgsql当前连接的库可访问的schemaNames
|
||||
func (pd *PgsqlDialect) GetSchemas() ([]string, error) {
|
||||
sql := dbi.GetLocalSql(PGSQL_META_FILE, PGSQL_DB_SCHEMAS)
|
||||
_, res, err := pd.dc.Query(sql)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
schemaNames := make([]string, 0)
|
||||
for _, re := range res {
|
||||
schemaNames = append(schemaNames, anyx.ConvString(re["schemaName"]))
|
||||
}
|
||||
return schemaNames, nil
|
||||
}
|
||||
|
||||
// GetDbProgram 获取数据库程序模块，用于数据库备份与恢复
|
||||
func (pd *PgsqlDialect) GetDbProgram() dbi.DbProgram {
|
||||
panic("implement me")
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) GetDataType(dbColumnType string) dbi.DataType {
|
||||
if regexp.MustCompile(`(?i)int|double|float|number|decimal|byte|bit`).MatchString(dbColumnType) {
|
||||
return dbi.DataTypeNumber
|
||||
}
|
||||
// 日期时间类型
|
||||
if regexp.MustCompile(`(?i)datetime|timestamp`).MatchString(dbColumnType) {
|
||||
return dbi.DataTypeDateTime
|
||||
}
|
||||
// 日期类型
|
||||
if regexp.MustCompile(`(?i)date`).MatchString(dbColumnType) {
|
||||
return dbi.DataTypeDate
|
||||
}
|
||||
// 时间类型
|
||||
if regexp.MustCompile(`(?i)time`).MatchString(dbColumnType) {
|
||||
return dbi.DataTypeTime
|
||||
}
|
||||
return dbi.DataTypeString
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) BatchInsert(tx *sql.Tx, tableName string, columns []string, values [][]any) (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, ...), ...
|
||||
|
||||
// 把二维数组转为一维数组
|
||||
var args []any
|
||||
for _, v := range values {
|
||||
args = append(args, v...)
|
||||
}
|
||||
|
||||
// 构建占位符字符串 "($1, $2, $3), ($4, $5, $6), ..." 用于指定参数
|
||||
var placeholders []string
|
||||
for i := 0; i < len(args); i += len(columns) {
|
||||
var placeholder []string
|
||||
for j := 0; j < len(columns); j++ {
|
||||
placeholder = append(placeholder, fmt.Sprintf("$%d", i+j+1))
|
||||
}
|
||||
placeholders = append(placeholders, "("+strings.Join(placeholder, ", ")+")")
|
||||
}
|
||||
|
||||
sqlStr := fmt.Sprintf("insert into %s (%s) values %s", pd.dc.Info.Type.QuoteIdentifier(tableName), strings.Join(columns, ","), strings.Join(placeholders, ", "))
|
||||
// 执行批量insert sql
|
||||
|
||||
return pd.dc.TxExec(tx, sqlStr, args...)
|
||||
}
|
||||
|
||||
func (pd *PgsqlDialect) FormatStrData(dbColumnValue string, dataType dbi.DataType) string {
|
||||
switch dataType {
|
||||
case dbi.DataTypeDateTime: // "2024-01-02T22:16:28.545377+08:00"
|
||||
res, _ := time.Parse(time.RFC3339, dbColumnValue)
|
||||
return res.Format(time.DateTime)
|
||||
case dbi.DataTypeDate: // "2024-01-02T00:00:00Z"
|
||||
res, _ := time.Parse(time.RFC3339, dbColumnValue)
|
||||
return res.Format(time.DateOnly)
|
||||
case dbi.DataTypeTime: // "0000-01-01T22:16:28.545075+08:00"
|
||||
res, _ := time.Parse(time.RFC3339, dbColumnValue)
|
||||
return res.Format(time.TimeOnly)
|
||||
}
|
||||
return dbColumnValue
|
||||
}
|
||||
111
server/internal/db/dbm/postgres/meta.go
Normal file
111
server/internal/db/dbm/postgres/meta.go
Normal file
@@ -0,0 +1,111 @@
|
||||
package postgres
|
||||
|
||||
import (
|
||||
"database/sql"
|
||||
"database/sql/driver"
|
||||
"fmt"
|
||||
"mayfly-go/internal/db/dbm/dbi"
|
||||
machineapp "mayfly-go/internal/machine/application"
|
||||
"mayfly-go/pkg/utils/collx"
|
||||
"mayfly-go/pkg/utils/netx"
|
||||
"net"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
pq "gitee.com/liuzongyang/libpq"
|
||||
)
|
||||
|
||||
var (
|
||||
meta dbi.Meta
|
||||
once sync.Once
|
||||
)
|
||||
|
||||
func GetMeta() dbi.Meta {
|
||||
once.Do(func() {
|
||||
meta = new(PostgresMeta)
|
||||
})
|
||||
return meta
|
||||
}
|
||||
|
||||
type PostgresMeta struct {
|
||||
}
|
||||
|
||||
func (md *PostgresMeta) GetSqlDb(d *dbi.DbInfo) (*sql.DB, error) {
|
||||
driverName := string(d.Type)
|
||||
// SSH Conect
|
||||
if d.SshTunnelMachineId > 0 {
|
||||
// 如果使用了隧道，则使用`postgres:ssh:隧道机器id`注册名
|
||||
driverName = fmt.Sprintf("postgres:ssh:%d", d.SshTunnelMachineId)
|
||||
if !collx.ArrayContains(sql.Drivers(), driverName) {
|
||||
sql.Register(driverName, &PqSqlDialer{sshTunnelMachineId: d.SshTunnelMachineId})
|
||||
}
|
||||
sql.Drivers()
|
||||
}
|
||||
|
||||
db := d.Database
|
||||
var dbParam string
|
||||
exsitSchema := false
|
||||
if db != "" {
|
||||
// postgres database可以使用db/schema表示，方便连接指定schema, 若不存在schema则使用默认schema
|
||||
ss := strings.Split(db, "/")
|
||||
if len(ss) > 1 {
|
||||
exsitSchema = true
|
||||
dbParam = fmt.Sprintf("dbname=%s search_path=%s", ss[0], ss[len(ss)-1])
|
||||
} else {
|
||||
dbParam = "dbname=" + db
|
||||
}
|
||||
}
|
||||
|
||||
dsn := fmt.Sprintf("host=%s port=%d user=%s password=%s %s sslmode=disable connect_timeout=8", d.Host, d.Port, d.Username, d.Password, dbParam)
|
||||
// 存在额外指定参数，则拼接该连接参数
|
||||
if d.Params != "" {
|
||||
// 存在指定的db，则需要将dbInstance配置中的parmas排除掉dbname和search_path
|
||||
if db != "" {
|
||||
paramArr := strings.Split(d.Params, "&")
|
||||
paramArr = collx.ArrayRemoveFunc(paramArr, func(param string) bool {
|
||||
if strings.HasPrefix(param, "dbname=") {
|
||||
return true
|
||||
}
|
||||
if exsitSchema && strings.HasPrefix(param, "search_path") {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
})
|
||||
d.Params = strings.Join(paramArr, " ")
|
||||
}
|
||||
dsn = fmt.Sprintf("%s %s", dsn, strings.Join(strings.Split(d.Params, "&"), " "))
|
||||
}
|
||||
|
||||
return sql.Open(driverName, dsn)
|
||||
}
|
||||
|
||||
func (md *PostgresMeta) GetDialect(conn *dbi.DbConn) dbi.Dialect {
|
||||
return &PgsqlDialect{conn}
|
||||
}
|
||||
|
||||
// pgsql dialer
|
||||
type PqSqlDialer struct {
|
||||
sshTunnelMachineId int
|
||||
}
|
||||
|
||||
func (d *PqSqlDialer) Open(name string) (driver.Conn, error) {
|
||||
return pq.DialOpen(d, name)
|
||||
}
|
||||
|
||||
func (pd *PqSqlDialer) Dial(network, address string) (net.Conn, error) {
|
||||
sshTunnel, err := machineapp.GetMachineApp().GetSshTunnelMachine(pd.sshTunnelMachineId)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if sshConn, err := sshTunnel.GetDialConn("tcp", address); err == nil {
|
||||
// 将ssh conn包装，否则会返回错误: ssh: tcpChan: deadline not supported
|
||||
return &netx.WrapSshConn{Conn: sshConn}, nil
|
||||
} else {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
func (pd *PqSqlDialer) DialTimeout(network, address string, timeout time.Duration) (net.Conn, error) {
|
||||
return pd.Dial(network, address)
|
||||
}
|
||||
Reference in New Issue
Block a user