71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package database
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import (
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"context"
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"history-api/pkg/config"
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"runtime"
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"time"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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func defaultMaxConns() int {
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conns := runtime.NumCPU() * 8
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if conns < 16 {
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return 16
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}
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if conns > 64 {
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return 64
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}
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return conns
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}
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func NewPostgresqlDB() (*pgxpool.Pool, error) {
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ctx := context.Background()
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connectionURI, err := config.GetConfig("PGX_CONNECTION_URI")
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if err != nil {
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return nil, err
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}
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poolConfig, err := pgxpool.ParseConfig(connectionURI)
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if err != nil {
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return nil, err
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}
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maxConns := config.GetIntConfigWithDefault("PGX_MAX_CONNS", defaultMaxConns())
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if maxConns < 1 {
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maxConns = defaultMaxConns()
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}
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minConns := config.GetIntConfigWithDefault("PGX_MIN_CONNS", maxConns/4)
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if minConns < 0 {
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minConns = 0
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}
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if minConns > maxConns {
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minConns = maxConns
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}
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poolConfig.MaxConns = int32(maxConns)
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poolConfig.MinConns = int32(minConns)
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poolConfig.MaxConnIdleTime = time.Duration(config.GetIntConfigWithDefault("PGX_MAX_CONN_IDLE_SECONDS", 300)) * time.Second
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poolConfig.HealthCheckPeriod = time.Duration(config.GetIntConfigWithDefault("PGX_HEALTH_CHECK_SECONDS", 60)) * time.Second
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var pool *pgxpool.Pool
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for i := 0; i < 5; i++ {
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pool, err = pgxpool.NewWithConfig(ctx, poolConfig)
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if err != nil {
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time.Sleep(2 * time.Second)
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continue
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}
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if err = pool.Ping(ctx); err == nil {
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return pool, nil
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}
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time.Sleep(2 * time.Second)
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}
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return nil, err
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}
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