Update: support for the Dark Sky API will be ending on March 31st, 2023

https://darksky.net/dev

darksky

Overview

darksky is a Java client library for the Dark Sky API API (former forecast.io).

For more details about the API and for creating an API key go to https://darksky.net/dev/ and sign up for a developer account. The free tier allows an application to send 1,000 API requests per day.

Example: Forecast Request

Create an instance of DsClient

DsClient client = new DsClient("...darksky.net.api.key...");

build a DsForecastRequest

DsForecastRequest request = DsForecastRequest.builder()
        .latitude("46.93011019")
		.longitude("7.5635394")
		.excludeBlock(DsBlock.ALERTS, DsBlock.MINUTELY, DsBlock.HOURLY)
		.unit(DsUnit.SI)
		.build();

call the API

DsResponse response = client.sendForecastRequest(request);

and process the response

for (DsDataPoint dataPoint : response.daily().data()) {
    ZoneId zoneId = ZoneId.of(response.timezone());
    Instant instant = Instant.ofEpochSecond(dataPoint.time());
    ZonedDateTime time = ZonedDateTime.ofInstant(instant, zoneId);

    System.out.print(time);
    System.out.print(": ");
    System.out.println(dataPoint.summary());
}

Example: Time Machine Request

Create an instance of DsClient

DsClient client = new DsClient("...darksky.net.api.key...");

build a DsTimeMachineRequest.

DsTimeMachineRequest request = DsTimeMachineRequest.builder()
        .latitude("46.93011019")
		.longitude("7.5635394")				
		.unit(DsUnit.SI)
		.time(ZonedDateTime.now().minusDays(10).toEpochSecond())
		.build();

call the API

DsResponse response = client.sendTimeMachineRequest(request);

and process the response

for (DsDataPoint dataPoint : response.hourly().data()) {			
    ZoneId zoneId = ZoneId.of(response.timezone());
    Instant instant = Instant.ofEpochSecond(dataPoint.time());
    ZonedDateTime time = ZonedDateTime.ofInstant(instant, zoneId);

    System.out.print(time);
    System.out.print(": ");
    System.out.println(dataPoint);            
}

Maven

	<dependency>
		<groupId>ch.rasc</groupId>
		<artifactId>darksky</artifactId>
		<version>2.0.1</version>
	</dependency>

Changelog

2.0.1 - March 21, 2020

• Add missing properties to DsAlert and DsDataPoint according to the Dark Sky API documentation.

  • DsAlert.regions
  • DsAlert.severity
  • DsAlert.time
  • DsDataPoint.apparentTemperatureHigh
  • DsDataPoint.apparentTemperatureHighTime
  • DsDataPoint.apparentTemperatureLow
  • DsDataPoint.apparentTemperatureLowTime
  • DsDataPoint.precipIntensityError
  • DsDataPoint.temperatureHigh
  • DsDataPoint.temperatureHighTime
  • DsDataPoint.temperatureLow
  • DsDataPoint.temperatureLowTime
  • DsDataPoint.uvIndex
  • DsDataPoint.uvIndexTime
  • DsDataPoint.windGust
  • DsDataPoint.windGustTime

2.0.0 - October 20, 2016

• Change package to ch.rasc.darksky (previously: ch.rasc.forecastio)
• Change class name prefix from Fio* to Ds* (i.e. FioClient -> DsClient)
• Fix include/exclude handling
• Add time machine requests

1.0.1 - September 30, 2016

• Change endpoint from api.forecast.io to api.darksky.net

1.0.0 - July 5, 2016

• Initial release

License

Code released under the Apache license.