72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// Package database manages PostgreSQL connection pools.
|
|
package database
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"log"
|
|
"time"
|
|
|
|
"github.com/jackc/pgx/v5/pgxpool"
|
|
)
|
|
|
|
const (
|
|
// maxConnIdleSeconds is the maximum idle time for a connection.
|
|
maxConnIdleSeconds = 30
|
|
// maxConnLifetimeMinutes is the maximum lifetime for a connection.
|
|
maxConnLifetimeMinutes = 5
|
|
// connectTimeoutSeconds is the timeout for initial connection.
|
|
connectTimeoutSeconds = 10
|
|
// maxConns is the maximum number of connections in the pool.
|
|
maxConns = 20
|
|
// minConns is the minimum number of connections in the pool.
|
|
minConns = 2
|
|
)
|
|
|
|
var pool *pgxpool.Pool //nolint:gochecknoglobals
|
|
|
|
// Connect establishes a PostgreSQL connection pool using the given DSN.
|
|
func Connect(dsn string) (*pgxpool.Pool, error) {
|
|
cfg, err := pgxpool.ParseConfig(dsn)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("parse database config: %w", err)
|
|
}
|
|
|
|
cfg.MaxConns = maxConns
|
|
cfg.MinConns = minConns
|
|
cfg.MaxConnIdleTime = maxConnIdleSeconds * time.Second
|
|
cfg.MaxConnLifetime = maxConnLifetimeMinutes * time.Minute
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), connectTimeoutSeconds*time.Second)
|
|
defer cancel()
|
|
|
|
p, err := pgxpool.NewWithConfig(ctx, cfg)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("create connection pool: %w", err)
|
|
}
|
|
|
|
if err := p.Ping(ctx); err != nil {
|
|
p.Close()
|
|
|
|
return nil, fmt.Errorf("ping database: %w", err)
|
|
}
|
|
|
|
log.Println("Connected to PostgreSQL database")
|
|
pool = p
|
|
|
|
return p, nil
|
|
}
|
|
|
|
// Pool returns the global connection pool.
|
|
func Pool() *pgxpool.Pool {
|
|
return pool
|
|
}
|
|
|
|
// Close closes the global connection pool.
|
|
func Close() {
|
|
if pool != nil {
|
|
pool.Close()
|
|
log.Println("Database connection pool closed")
|
|
}
|
|
}
|