mirror of
https://gitee.com/dromara/mayfly-go
synced 2025-11-02 23:40:24 +08:00
138 lines
3.5 KiB
Go
138 lines
3.5 KiB
Go
package postgres
|
||
|
||
import (
|
||
"database/sql"
|
||
"database/sql/driver"
|
||
"fmt"
|
||
"mayfly-go/internal/db/dbm/dbi"
|
||
"mayfly-go/pkg/utils/collx"
|
||
"mayfly-go/pkg/utils/netx"
|
||
"net"
|
||
"strings"
|
||
"time"
|
||
|
||
pq "gitee.com/liuzongyang/libpq"
|
||
)
|
||
|
||
func init() {
|
||
meta := new(Meta)
|
||
dbi.Register(DbTypePostgres, meta)
|
||
dbi.Register(DbTypeKingbaseEs, meta)
|
||
dbi.Register(DbTypeVastbase, meta)
|
||
|
||
gauss := &Meta{
|
||
Param: "dbtype=gauss",
|
||
}
|
||
dbi.Register(DbTypeGauss, gauss)
|
||
}
|
||
|
||
const (
|
||
DbTypePostgres dbi.DbType = "postgres"
|
||
DbTypeGauss dbi.DbType = "gauss"
|
||
DbTypeKingbaseEs dbi.DbType = "kingbaseEs"
|
||
DbTypeVastbase dbi.DbType = "vastbase"
|
||
)
|
||
|
||
type Meta struct {
|
||
Param string
|
||
}
|
||
|
||
func (pm *Meta) GetSqlDb(d *dbi.DbInfo) (*sql.DB, error) {
|
||
driverName := "postgres"
|
||
// 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
|
||
existSchema := false
|
||
// 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 {
|
||
existSchema = 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 existSchema && 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, "&"), " "))
|
||
}
|
||
|
||
if pm.Param != "" && !strings.Contains(dsn, "dbtype") {
|
||
dsn = fmt.Sprintf("%s %s", dsn, pm.Param)
|
||
}
|
||
|
||
return sql.Open(driverName, dsn)
|
||
}
|
||
|
||
func (pm *Meta) GetDialect(conn *dbi.DbConn) dbi.Dialect {
|
||
return &PgsqlDialect{dc: conn}
|
||
}
|
||
|
||
func (pm *Meta) GetMetadata(conn *dbi.DbConn) dbi.Metadata {
|
||
return &PgsqlMetadata{dc: conn}
|
||
}
|
||
|
||
func (pm *Meta) GetDbDataTypes() []*dbi.DbDataType {
|
||
return collx.AsArray(
|
||
Bool, Int2, Int4, Int8, Numeric, Decimal, Smallserial, Serial, Bigserial, Largeserial,
|
||
Money,
|
||
Char, Nchar, Varchar, Text, Json,
|
||
Date, Time, Timestamp,
|
||
Bytea,
|
||
)
|
||
}
|
||
|
||
func (pm *Meta) GetCommonTypeConverter() dbi.CommonTypeConverter {
|
||
return &commonTypeConverter{}
|
||
}
|
||
|
||
// pgsql dialer
|
||
type PqSqlDialer struct {
|
||
sshTunnelMachineId int
|
||
}
|
||
|
||
func (pd *PqSqlDialer) Open(name string) (driver.Conn, error) {
|
||
return pq.DialOpen(pd, name)
|
||
}
|
||
|
||
func (pd *PqSqlDialer) Dial(network, address string) (net.Conn, error) {
|
||
sshTunnel, err := dbi.GetSshTunnel(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)
|
||
}
|