// 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
}
}
}
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
}
}
}