Currently, gas-prices are set upon bridge startup via the
Users's config TOML file; this value remains constant for the
life of the Bridge.
Solution: create a mechanism that asynchronously queries
gas-prices from an "Oracle" service on a timed interval. This
mechanism should be a stream of gas-prices that can be polled
from the Bridge.
This means that the node has to sign the transaction itself.
It might be acceptable in a localized setup, but can't be used
with untrusted setups. For example, once HTTP RPC is supported,
we can't really use infrastructure like INFURA to send transactions.
Solution: switch to signing transactions in bridge
This absolutely requires separating the accounts used by validators
and administrative tasks as this will otherwise interfere with
management of nonces.
As a part of the original feature request, there was a need
for the bridge to be able to sign its own transactions. However,
this didn't fully materialize in the original patch, and only
configuration parameters were implemented.
Solution: remove these last conflated bits
and make this a pure transport change patch.
RPC patch has introduced a separate basic test that, on the surface
of it, is not too dissimilar from the basic deposit and withdrawal
test already defined in integration tests.
Solution: make sure integration tests run and remove newly introduced test
Using IPC means bridge has to run alognside the node
on the same machine. This, at times, presents problems
in terms of efficiency or coupling of deployment.
Solution: switch to RPC
Peter van Nostrand
Yurii Rashkovskii
Edward Mack
Maximilian Krüger