Ilia Denisov
31 lines
681 B
Go
31 lines
681 B
Go
package postgres
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"time"
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)
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// Ping bounds db.PingContext under timeout and returns a wrapped error so
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// startup failures are easy to spot in service logs.
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//
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// timeout is typically taken from Config.OperationTimeout.
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func Ping(ctx context.Context, db *sql.DB, timeout time.Duration) error {
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if db == nil {
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return errors.New("ping postgres: nil db")
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}
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if timeout <= 0 {
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return errors.New("ping postgres: timeout must be positive")
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}
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pingCtx, cancel := context.WithTimeout(ctx, timeout)
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defer cancel()
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if err := db.PingContext(pingCtx); err != nil {
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return fmt.Errorf("ping postgres: %w", err)
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}
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return nil
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}
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