Hermes support for triggering live packet clearing

[adizere]

Problem

Often, operators need to invoke clear packets CLI and run that in parallel with hermes start. Currently we don't support this use case: the start process has to be stopped first, before invoking clear packets; or alternatively a different config.toml has to be used for clear packets to ensure non-concurrent access to the wallet that start process is using.

We plan to make it more convenient by supporting a specific wallet for the clear packets (ref: #2111) command, so that in the future this CLI can run in parallel with start.

Proposal

Another way to should support the use-case of live packet clearing is by leveraging our REST API: adding a new endpoint clear-packets that allows to trigger a packet clearing on an already executing start instance. Ideally, this new endpoint can also be parametrized with a specific chain identifier, eg clear-packets/ibc-0 to trigger packet clearing specifically on all paths that have packets originating from ibc-0.

Acceptance Criteria

• permit operators to trigger packet clearing on a running start instance via the REST API

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