Configurable ADA commit limit in mainnet

[stanislav-az]

Why

Quoting hydra documentation:

There is a hard-coded limit on mainnet network where you can only commit up to 100 ADA into the Hydra head. This is only a safety precaution and is going to be increased as we gain more experience in running Hydra heads on the mainnet.

Some apps, once familiar with Hydra Head flow, need to commit more ADA into a head. E.g. this could be useful for larger bids in interactive games inside heads, or for payment systems with bigger throughput.

What

It is probably reasonable to make this ADA limit optionally configurable by users of hydra-node.

How

Add a CLI flag --ada-commit-limit. If it is provided by user hydra-node --ada-commit-limit 10000, then configure it to provided number, otherwise use old 100 ADA limit.

[ch1bo]

@stanislav-az Thanks for submitting this idea and sorry for the late "reply".

We have considered making this configurable, but that would defeat the purpose of this mechanism. Essentially, if someone wants to increase this limit they could just go to the source and change this number in a single location (currently here), recompile their hydra-node and do it themselves. Consequently we assume that such an actor would have done their own research and due diligence on the possible risk of using the Hydra protocol.

Feel free to re-open this if you disagree or think we should document this better.