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db.go
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db.go
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/*
* CloudLinux Software Inc 2019-2021 All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package mysql
import (
"database/sql"
"fmt"
_ "github.com/go-sql-driver/mysql"
)
var protectedDatabases = map[string]bool{
"information_schema": true,
"mysql": true,
"performance_schema": true,
"sys": true,
"sys_operator": true,
}
type Database struct {
session *Session
}
func (db *Database) IsProtected(name string) bool {
_, ok := protectedDatabases[name]
return ok
}
func (db *Database) Create(name string) error {
conn, err := sql.Open("mysql", db.session.ConnectionString(db.session.MasterIP, ""))
if err != nil {
return err
}
defer conn.Close()
// Open doesn't open a connection. Validate DSN data:
if err = conn.Ping(); err != nil {
return err
}
query := fmt.Sprintf("CREATE DATABASE %s;", name)
_, err = conn.Exec(query)
return err
}
func (db *Database) Drop(name string) error {
conn, err := sql.Open("mysql", db.session.ConnectionString(db.session.MasterIP, ""))
if err != nil {
return err
}
defer conn.Close()
// Open doesn't open a connection. Validate DSN data:
if err = conn.Ping(); err != nil {
return err
}
query := fmt.Sprintf("DROP DATABASE %s;", name)
_, err = conn.Exec(query)
return err
}
func (db *Database) List() ([]string, error) {
var names []string
conn, err := sql.Open("mysql", db.session.ConnectionString(db.session.MasterIP, ""))
if err != nil {
return names, err
}
defer conn.Close()
rows, err := conn.Query(`
SELECT schema_name FROM information_schema.schemata;
`)
if err != nil {
return names, err
}
defer rows.Close()
for rows.Next() {
var name string
err = rows.Scan(&name)
if err != nil {
return names, err
}
names = append(names, name)
}
return names, nil
}