fastpastebin/database/database.go

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// Fast Paste Bin - uberfast and easy-to-use pastebin.
//
// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
// developers.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject
// to the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package database
import (
// stdlib
"fmt"
// other
_ "github.com/go-sql-driver/mysql"
"github.com/jmoiron/sqlx"
)
// Database represents control structure for database connection.
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type Database struct {
db *sqlx.DB
}
// GetDatabaseConnection returns current database connection.
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func (db *Database) GetDatabaseConnection() *sqlx.DB {
return db.db
}
// Initialize initializes connection to database.
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func (db *Database) Initialize() {
c.Logger.Info().Msg("Initializing database connection...")
// There might be only user, without password. MySQL/MariaDB driver
// in DSN wants "user" or "user:password", "user:" is invalid.
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var userpass = ""
if c.Config.Database.Password == "" {
userpass = c.Config.Database.Username
} else {
userpass = c.Config.Database.Username + ":" + c.Config.Database.Password
}
dbConnString := fmt.Sprintf("%s@tcp(%s:%s)/%s?parseTime=true&collation=utf8mb4_unicode_ci&charset=utf8mb4", userpass, c.Config.Database.Address, c.Config.Database.Port, c.Config.Database.Database)
c.Logger.Debug().Msgf("Database connection string: %s", dbConnString)
dbConn, err := sqlx.Connect("mysql", dbConnString)
if err != nil {
c.Logger.Panic().Msgf("Failed to connect to database: %s", err.Error())
}
// Force UTC for current connection.
_ = dbConn.MustExec("SET @@session.time_zone='+00:00';")
c.Logger.Info().Msg("Database connection established")
db.db = dbConn
}