Exemplo n.º 1
0
// Handle FX quotes
func handleFX(requestFX <-chan string, receiveFX chan<- float64, doneChan <-chan bool) {
	prices := make(map[string]float64)
	prices["usd"] = 1
	fxChan := make(chan forex.Quote)
	fxDoneChan := make(chan bool)
	// Initiate communication and initialize prices map
	for _, symbol := range currencies {
		quote := forex.CommunicateFX(symbol, fxChan, fxDoneChan)
		if quote.Error != nil {
			log.Fatal(quote.Error)
		}
		prices[symbol] = quote.Price
	}

	// Handle data until notified of termination
	for {
		select {
		// Incoming forex quote
		case quote := <-fxChan:
			if !isError(quote.Error) {
				prices[quote.Symbol] = quote.Price
			}
		// New request for price
		case symbol := <-requestFX:
			receiveFX <- prices[symbol]
		// Termination
		case <-doneChan:
			fxDoneChan <- true
			return
		}
	}
}
Exemplo n.º 2
0
func main() {
	filename := "btcbook.log"
	logFile, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
	if err != nil {
		log.Fatal(err)
	}
	log.SetOutput(logFile)
	log.Println("Starting new run")
	fxChan := make(chan forex.Quote)
	fxDoneChan := make(chan bool, 1)
	quote := forex.CommunicateFX("cny", fxChan, fxDoneChan)
	if quote.Error != nil || quote.Price == 0 {
		log.Fatal(quote.Error)
	}
	cny = quote.Price

	bookChan := make(chan exchange.Book)
	if book := btc.CommunicateBook(bookChan); book.Error != nil {
		log.Fatal(book.Error)
	}
	inputChan := make(chan rune)
	go checkStdin(inputChan)

Loop:
	for {
		select {
		case book := <-bookChan:
			printBook(book)
		case <-inputChan:
			btc.Done()
			fxDoneChan <- true
			break Loop
		}
	}

}