42 lines
587 B
Go
42 lines
587 B
Go
package main
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import (
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"encoding/csv"
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"io"
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"os"
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"sync"
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"time"
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)
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// The free tier of the OpenWeatherMap API allows for 60 requests per minute.
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// ∴ we limit our requests to 1 per second.
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var interval = 1 * time.Second
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func processCSV(
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file *os.File, ztchan chan *ZipTemp,
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) {
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var (
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limiter = time.Tick(interval)
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wg sync.WaitGroup
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)
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reader := csv.NewReader(file)
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for {
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record, err := reader.Read()
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if err == io.EOF {
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break
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}
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if err != nil {
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panic(err)
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}
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<-limiter
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wg.Add(1)
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go getZipTemp(&wg, record, ztchan)
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}
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wg.Wait()
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close(ztchan)
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}
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