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postgresql.go
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postgresql.go
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package postgresql
import (
"database/sql"
"fmt"
_ "github.com/lib/pq"
"github.com/chenhg5/go-admin/modules/config"
"github.com/chenhg5/go-admin/modules/connections/performer"
"net/url"
"strconv"
"strings"
"sync"
)
type Postgresql struct {
SqlDBmap map[string]*sql.DB
Once sync.Once
}
func GetPostgresqlDB() *Postgresql {
return &DB
}
func (db *Postgresql) Query(query string, args ...interface{}) ([]map[string]interface{}, *sql.Rows) {
queCount := strings.Count(query, "?")
for i := 1; i < queCount+1; i++ {
query = strings.Replace(query, "?", "$"+strconv.Itoa(i), 1)
}
query = strings.Replace(query, "`", "", -1)
// TODO: 关键字加双引号
query = strings.Replace(query, "by order ", `by "order" `, -1)
fmt.Println("query", query)
return performer.Query(db.SqlDBmap["default"], query, args...)
}
func (db *Postgresql) Exec(query string, args ...interface{}) sql.Result {
queCount := strings.Count(query, "?")
for i := 1; i < queCount+1; i++ {
query = strings.Replace(query, "?", "$"+strconv.Itoa(i), 1)
}
query = strings.Replace(query, "`", "", -1)
// TODO: 关键字加双引号
query = strings.Replace(query, "by order ", `by "order" `, -1)
fmt.Println("query", query)
return performer.Exec(db.SqlDBmap["default"], query, args...)
}
func (db *Postgresql) InitDB(cfgList map[string]config.Database) {
db.Once.Do(func() {
var (
sqlDB *sql.DB
err error
)
for conn, cfg := range cfgList {
query := url.Values{}
query.Add("sslmode", "disable") // "verify-full"
u := &url.URL{
Scheme: "postgres",
User: url.UserPassword(cfg.USER, cfg.PWD),
Host: fmt.Sprintf("%s:%s", cfg.HOST, cfg.PORT),
RawQuery: query.Encode(),
}
fmt.Println("connection: ", u.String())
sqlDB, err = sql.Open("postgres", u.String())
if err != nil {
panic(err)
} else {
db.SqlDBmap[conn] = sqlDB
}
}
})
}
var DB = Postgresql{
SqlDBmap: map[string]*sql.DB{},
}