weather/internal/poller/weather.go

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package poller
import (
"go/weather/internal/web"
"go/weather/pkg/logger"
"io"
"net/http"
"net/url"
"strconv"
"go.uber.org/zap"
)
type weatherPoller struct {
client *http.Client
endpoint *url.URL
logger *logger.WeatherLogger
}
//NewWeatherPoller construct weather poller instance
func NewWeatherPoller(log *logger.WeatherLogger, remote web.ListenAddr, lat, lon float64, secretID string) Poller {
u := &url.URL{
Scheme: "https",
Path: "/data/2.5/onecall",
Host: remote.String(),
}
q := u.Query()
q.Set("lat", strconv.FormatFloat(lat, 'f', 2, 64))
q.Set("lon", strconv.FormatFloat(lon, 'f', 2, 32))
q.Set("appid", secretID)
q.Set("units", "metric")
q.Set("lang", "fr")
u.RawQuery = q.Encode()
return &weatherPoller{
client: http.DefaultClient,
endpoint: u,
logger: log,
}
}
//Poll retrieve weather information
func (w *weatherPoller) Poll() io.ReadCloser {
r, err := w.client.Get(w.endpoint.String())
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w.logger.Info("HTTP poll to openweathermap",
zap.Int("http.response.status_code", r.StatusCode),
zap.Int("http.response.body.bytes", int(r.ContentLength)),
)
w.handleError(err)
return r.Body
}
//handleError generic fatal error
func (w *weatherPoller) handleError(err error) {
if err != nil {
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w.logger.Error("Poller error", zap.Error(err))
}
}