47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
package database
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import (
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"fmt"
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"log"
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"gorm.io/driver/mysql"
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"gorm.io/gorm"
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"gorm.io/gorm/logger"
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)
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// Initialize creates and configures the database connection
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// Uses MySQL driver with proper connection pooling and charset support
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func Initialize(host, port, user, password, dbname, charset string) (*gorm.DB, error) {
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// Configure GORM logger
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gormLogger := logger.Default.LogMode(logger.Info)
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// Build MySQL DSN (Data Source Name)
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// Format: user:password@tcp(host:port)/dbname?charset=utf8mb4&parseTime=True&loc=Local
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dsn := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s?charset=%s&parseTime=True&loc=Local",
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user, password, host, port, dbname, charset)
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// Open MySQL database connection
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db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{
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Logger: gormLogger,
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})
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if err != nil {
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return nil, fmt.Errorf("failed to connect to database: %w", err)
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}
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// Get underlying SQL DB for connection pool configuration
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sqlDB, err := db.DB()
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if err != nil {
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return nil, fmt.Errorf("failed to get underlying database: %w", err)
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}
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// Configure connection pool for MySQL
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sqlDB.SetMaxIdleConns(10) // Maximum number of idle connections
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sqlDB.SetMaxOpenConns(100) // Maximum number of open connections
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sqlDB.SetConnMaxLifetime(3600) // Maximum connection lifetime (1 hour)
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sqlDB.SetConnMaxIdleTime(600) // Maximum idle time (10 minutes)
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log.Printf("Database connected: %s@%s:%s/%s", user, host, port, dbname)
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return db, nil
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}
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