Package io.openems.edge.timeofusetariff.entsoe

Class ExchangeRateApi

java.lang.Object

io.openems.edge.timeofusetariff.entsoe.ExchangeRateApi

public class ExchangeRateApi
extends Object

A utility class for fetching exchange rates from a web API.

Day ahead prices retrieved from ENTSO-E are usually in EUR and might have to be converted to the user's currency using the exchange rates provided by Exchange Rate API. For more information on the ExchangeRate API, visit: https://exchangerate.host/#/docs

Constructor Summary

Constructors

Constructor	Description
ExchangeRateApi()

Method Summary

Modifier and Type	Method	Description
protected static double	getExchangeRate(String accessKey, String source, Currency target)	Fetches the exchange rate from exchangerate.host.
protected static double	parseResponse(String response, String source, Currency target)	Parses the response string from exchangerate.host.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ExchangeRateApi

public ExchangeRateApi()

Method Details

getExchangeRate

protected static double getExchangeRate(String accessKey,
 String source,
 Currency target)
                                 throws IOException,
OpenemsError.OpenemsNamedException

Fetches the exchange rate from exchangerate.host.

Parameters:

accessKey - personal API access key.

source - the source currency (e.g. EUR)

target - the target currency (e.g. SEK)

Returns:

the exchange rate.

Throws:

IOException - on error.

OpenemsError.OpenemsNamedException - on error

parseResponse

protected static double parseResponse(String response,
 String source,
 Currency target)
                               throws OpenemsError.OpenemsNamedException

Parses the response string from exchangerate.host.

Parameters:

response - the response string

source - the source currency (e.g. EUR)

target - the target currency (e.g. SEK)

Returns:

the exchange rate.

Throws:

OpenemsError.OpenemsNamedException - on error.