diff options
| -rw-r--r-- | nws/nws.go | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -53,7 +53,8 @@ type ForecastPeriod struct { } type ForecastProperties struct { - Periods []ForecastPeriod + GeneratedAt string + Periods []ForecastPeriod } type Forecast struct { @@ -262,6 +263,20 @@ func GetForecastHourly(point *Point) (*Forecast, error) { if len(forecast.Properties.Periods) == 0 { return nil, fmt.Errorf("forecast hourly: periods empty") } + + // Check for staleness. + genAt, tErr := time.Parse(time.RFC3339, forecast.Properties.GeneratedAt) + if tErr != nil { + return nil, fmt.Errorf("forecast hourly: unable to check staleness") + } + if time.Since(genAt).Seconds() > 86400 { + fhCache.Set(point.Properties.ForecastHourly, + []byte{}, time.Now()) // Invalidate cache. + return nil, fmt.Errorf( + "forecast hourly: stale data from weather.gov from %v", + forecast.Properties.GeneratedAt, + ) + } return forecast, nil } |