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db.go
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db.go
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package db
import (
"context"
"io"
_ "github.com/go-sql-driver/mysql"
"github.com/cateiru/cateiru.com/ent"
"github.com/cateiru/cateiru.com/src/config"
)
type DB struct {
// Usage. https://entgo.io/ja/docs/crud
Client *ent.Client
}
// Start DB Connection
//
// Use MySQL.
func NewConnectMySQL() (*DB, error) {
client, err := ent.Open("mysql", config.Config.DBConfig.FormatDSN())
if err != nil {
return nil, err
}
return &DB{
Client: client,
}, nil
}
// Connect `empty` table
func NewEmptySQL() (*DB, error) {
client, err := ent.Open("mysql", "docker:docker@tcp(localhost:3306)/em?parseTime=True")
if err != nil {
return nil, err
}
return &DB{
Client: client,
}, nil
}
// Write SQL Schema
//
// Used:
//
// f, err := os.Create("schema.sql")
// if err != nil {
// log.Fatalf("create migrate file: %v", err)
// }
// if err := db.WriteSchema(ctx, f); err != nil {
// log.Fatalf("failed %v", err)
// }
func (c *DB) WriteSchema(ctx context.Context, w io.Writer) error {
return c.Client.Schema.WriteTo(ctx, w)
}
// Close DB Connection
func (c *DB) Close() {
c.Client.Close()
}