65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
package nrod
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import (
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"compress/gzip"
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"errors"
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"fmt"
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"io"
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"net/http"
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"time"
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"git.fjla.uk/owlboard/timetable-mgr/helpers"
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"git.fjla.uk/owlboard/timetable-mgr/log"
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"go.uber.org/zap"
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)
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// Downloads NROD Data and extracts if GZIP, returns a io.Reader
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func NrodStream(url string, cfg *helpers.Configuration) (io.ReadCloser, error) {
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log.Debug("Fetching NROD data stream", zap.String("Request URL", url))
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client := http.Client{
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Timeout: time.Second * 300,
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}
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return nil, err
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}
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req.Header.Add("Authorization", "Basic "+helpers.BasicAuth(cfg.NrodUser, cfg.NrodPass))
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resp, err := client.Do(req)
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if err != nil {
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log.Error("Error carrying out HTTP Request", zap.Error(err))
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return nil, err
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}
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if resp == nil {
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err = errors.New("http response error - response = nil")
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return nil, err
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}
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if resp.StatusCode != http.StatusOK {
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err := fmt.Errorf("unexpected status code: %d", resp.StatusCode)
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return nil, err
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}
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// Run the data through the extractor function and return io.ReadCloser, error from
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// that function directly
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return NrodStreamExtract(resp)
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}
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func NrodStreamExtract(resp *http.Response) (io.ReadCloser, error) {
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log.Debug("Extracting NROD Download")
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log.Debug("Content Type", zap.String("Content-Encoding", resp.Header.Get("Content-Encoding")))
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gzReader, err := gzip.NewReader(resp.Body)
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if err != nil {
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log.Warn("Unable to create GZIP Reader, data probably not gzipped")
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return resp.Body, err
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}
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return gzReader, nil
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}
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