69 lines
1.2 KiB
Go
69 lines
1.2 KiB
Go
package database
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import (
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"context"
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"fmt"
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"log"
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"time"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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const (
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maxConnIdleSeconds = 30
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maxConnLifetimeMinutes = 5
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connectTimeoutSeconds = 10
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maxConns = 20
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minConns = 2
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)
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var pool *pgxpool.Pool //nolint:gochecknoglobals
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// establishPostgreSQL connection pool using the given DSN.
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func Connect(dsn string) (*pgxpool.Pool, error) {
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cfg, err := pgxpool.ParseConfig(dsn)
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if err != nil {
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return nil, fmt.Errorf("parse database config: %w", err)
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}
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cfg.MaxConns = maxConns
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cfg.MinConns = minConns
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cfg.MaxConnIdleTime = maxConnIdleSeconds * time.Second
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cfg.MaxConnLifetime = maxConnLifetimeMinutes * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), connectTimeoutSeconds*time.Second)
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defer cancel()
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p, err := pgxpool.NewWithConfig(ctx, cfg)
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if err != nil {
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return nil, fmt.Errorf("create connection pool: %w", err)
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}
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if err := p.Ping(ctx); err != nil {
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p.Close()
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return nil, fmt.Errorf("ping database: %w", err)
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}
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log.Println("Connected to PostgreSQL database")
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pool = p
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return p, nil
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}
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func Pool() *pgxpool.Pool {
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return pool
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}
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func Close() {
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if pool != nil {
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pool.Close()
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log.Println("Database connection pool closed")
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}
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}
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