Function getRetryableErrorDescription

packages/internal/src/db/transaction.ts:126–153

(
  error: unknown,
)

 * Returns the error description if retryable, null otherwise.
 */
export function getRetryableErrorDescription(
  error: unknown,
): string | null {
  const errorCode = getPostgresErrorCode(error)
  if (typeof errorCode !== 'string') {
    return null
  }

  // Check exact match first
  if (errorCode in RETRYABLE_PG_ERROR_CODES) {
    return RETRYABLE_PG_ERROR_CODES[errorCode]
  }

  // Check class-level match (first 2 characters) for retryable error classes
  // This catches any errors in these classes we may not have explicitly listed
  const errorClass = errorCode.substring(0, 2)
  const retryableClasses: Record<string, string> = {
    '08': 'connection_exception',
    '40': 'transaction_rollback',
    '53': 'insufficient_resources',
    '57': 'operator_intervention',
  }
  if (errorClass in retryableClasses) {
    return `${retryableClasses[errorClass]}_${errorCode}`
  }

  return null
}

/**
 * Checks if an error is a retryable PostgreSQL error.