コード例 #1
0
// downloadAll() orchestrates downloading all known reports concurrently.
// It returns an error if there is a problem logging in.
func downloadAll() error {
	downloader, err := download.New(*site, *email, *password)
	if err != nil {
		return errors.New("Failed to initialize downloader: " + err.Error())
	}

	var wg sync.WaitGroup

	// Store download functions in a slice to simplify concurrent downloading.
	downloadFunctions := []func(*download.Downloader){
		downloadSoldItemsReport,
		downloadStockItemsReport,
	}

	// Call each download function concurrently.
	// A sync.WaitGroup is used to make sure the function does not return
	// until all downloads are finished.
	for _, df := range downloadFunctions {
		wg.Add(1)
		go func(f func(*download.Downloader)) {
			defer wg.Done()
			f(downloader)
		}(df)
	}

	wg.Wait()

	return nil
}
コード例 #2
0
// Download the stock items report to the given directory.
// Returns the path to the report as a string.
// Error is non-nil if something goes wrong.
func downloadStockItemsReport(dir string) (string, error) {
	// downloader should be passed into the function if more
	// reports are necessary in the future.
	downloader, err := download.New(*site, *email, *password)
	if err != nil {
		return "", errors.New("Failed to initialize downloader: " + err.Error())
	}

	stockItemsPath := path.Join(dir, "stock_items.csv")

	err = downloader.GetStockItemsReport(stockItemsPath)
	if err != nil {
		return "", errors.New("Failed to get Stock Items report: " + err.Error())
	}

	return stockItemsPath, nil
}