Add support for a few exchanges to demonstrate and test the pricenode
aggregate rates.
The chose exchanges were selected because they each provide a varied
list of fiat and altcoins, with a substantial overlap between them. This
provides a robust initial set of datapoints and scenarios for aggregate
rates.
Add support for aggregate rates in the ExchangeRateService. If multiple
ExchangeRateProviders contain rates for the same currency, then these
rates will be automatically aggregated (averaged) into one.
This allows the service to transparently scale to multiple providers for
any specific currency.
The clients index the rates received from the pricenode by currency
code, which means they expect at most a single rate per currency. By
aggregating rates from multiple providers into one per currency, the
ExchangeRateService provides more accurate price data. At the same time,
the service API data structure remains intact, thus preserving backward
compatibility with all clients.
Update sanity check methods to allow for deeper and more comprehensive
validations of the input data. Accept full ExchangeRateProviders in the
method signatures, instead of just the provider prefix, to allow for
more complex sanity checks within those validation methods.
There is a race condition in PopupManager when with a stack of 2 popups,
the top popup is being replaced by another top-level popup. The base
layer popup ends up on top of the z-order, obscuring the correct one.
The race condition in PopupManager was within the onHidden() method
which invokes the next window in the queue. The call to displayNext()
needs to be asynchronous so that a newer popup can take precedence.
Fixes#4293
Issue: if a taker used exactly all BSQ from the BSQ inputs to pay the
trading fee, there was no BSQ change in the takeOfferFeeTx. It was
assumed that the second output was the reservedForTrade output, but in
the case of missing BSQ change it was the first output.
Fix: added a check to make sure the value of the inputs to the deposit
tx match the expected inputAmount.
Added a check that if there is no BSQ outputs in the bsqTradingFeeTx a
change output is added of value 1 satoshi more than the BSQ input value.
This ensures that the second output is always the reservedForTrade
output. It also ensures that the BSQ is burnt, even in the very unlikely
case that the amount of BSQ burnt is larger than the reservedForTrade
amount.
Issue: if a taker used exactly all BSQ from the BSQ inputs to pay the
trading fee, there was no BSQ change in the takeOfferFeeTx. It was
assumed that the second output was the reservedForTrade output, but in
the case of missing BSQ change it was the first output.
Fix: added a check to make sure the value of the inputs to the deposit
tx match the expected inputAmount.
Added a check that if there is no BSQ outputs in the bsqTradingFeeTx a
change output is added of value 1 satoshi more than the BSQ input value.
This ensures that the second output is always the reservedForTrade
output. It also ensures that the BSQ is burnt, even in the very unlikely
case that the amount of BSQ burnt is larger than the reservedForTrade
amount.
Don't include outliers (20% deviation from moving average) in moving
average calculation. It's quite likely that low liquidity markets or
markets with large spreads can't calculate deposit suggestion and will
then suggest deposit from preferences.
Added test for moving average class
