9c39c8cbd7
Go workspace (go.work) with 5 microservices + shared library: - gateway (8080), auth-service (8081), purchaser-service (8082) - textile-service (8083), washing-service (8084) - shared: proto definitions, common packages Infrastructure: docker-compose for local dev, K8s manifests for K3s cluster deployment (mysql/redis/etcd + traefik ingress). Frontend (iloom-flatten) added as git submodule. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
72 lines
1.4 KiB
Go
72 lines
1.4 KiB
Go
package database
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import (
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"context"
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"database/sql"
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"fmt"
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"time"
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_ "github.com/go-sql-driver/mysql"
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)
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type Config struct {
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Host string
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Port int
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User string
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Password string
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DBName string
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MaxConns int
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MinConns int
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}
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func (c Config) DSN() string {
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return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?parseTime=true&charset=utf8mb4&collation=utf8mb4_unicode_ci&loc=Local",
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c.User, c.Password, c.Host, c.Port, c.DBName)
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}
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func NewDB(cfg Config) (*sql.DB, error) {
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db, err := sql.Open("mysql", cfg.DSN())
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if err != nil {
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return nil, fmt.Errorf("open database: %w", err)
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}
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if cfg.MaxConns > 0 {
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db.SetMaxOpenConns(cfg.MaxConns)
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}
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if cfg.MinConns > 0 {
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db.SetMaxIdleConns(cfg.MinConns)
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}
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db.SetConnMaxLifetime(30 * time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := db.PingContext(ctx); err != nil {
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db.Close()
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return nil, fmt.Errorf("ping database: %w", err)
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}
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return db, nil
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}
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func NewDBFromDSN(dsn string) (*sql.DB, error) {
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db, err := sql.Open("mysql", dsn)
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if err != nil {
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return nil, fmt.Errorf("open database: %w", err)
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}
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db.SetMaxOpenConns(25)
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db.SetMaxIdleConns(5)
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db.SetConnMaxLifetime(30 * time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := db.PingContext(ctx); err != nil {
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db.Close()
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return nil, fmt.Errorf("ping database: %w", err)
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}
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return db, nil
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}
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