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Published 20 hours ago • verified publisher icon input-output-hk

Hosted Hydra Head, DEMO environment

Open ch1bo opened this issue 3 years ago • 2 comments
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What & Why

In order to transact with a Hydra head during application development, developers need to set up and deploy a hydra-node network. This requires significant time and effort, which can be reduced by making available a hosted Hydra Head DEMO environment, accessible through a hydra-node API, using well-known public spending keys. The hosted Hydra Head instance would allow clients to query UTXOs in the Head and to submit transactions to the Head.

This DEMO environment will be configured to connect to either a private testnet or a public Cardano testnet, depending on readiness.

Open questions

  • confirm the need with application developers
  • prevent closing Heads by using the public API

ch1bo avatar Jan 30 '22 17:01 ch1bo

I think priority of this issue should be raised but in order to be useful, it should be reframed as "Dirt Road Hydra-Head-as-a-Service"

abailly-iohk avatar Apr 22 '22 06:04 abailly-iohk

Use hydraw instead for this as a more simpler surface to keep hosted / running?

ch1bo avatar Aug 16 '22 14:08 ch1bo

Discovered improvement:

  • [ ] Use text envelopes like cardano keys to make it easy to distinguish from any random bytes
  • [x] Provide a command line tool to generate hydra keys

ch1bo avatar Aug 30 '22 09:08 ch1bo

More ideas:

  • [ ] Extend the TUI (as it is already available on the target) to prepare commit UTxOs and mark UTxOs as fuel
  • [ ] Display a HeadId to the TUI (could be the actual policy id)

ch1bo avatar Sep 06 '22 09:09 ch1bo

As @abailly-iohk also mentioned

  • [ ] Have the TUI a not allow multiple submissions of Close etc. via a client-side pending status.

ch1bo avatar Sep 06 '22 10:09 ch1bo

More things we stumbled over today:

  • [ ] Hard to diagnose why head initialization was not shown: Should not discard InitObservation when some keys don't match and have higher-level logic log & ignore instead https://github.com/input-output-hk/hydra-poc/blob/c7c28d6618877ba8b64f244aefb47708586fd391/hydra-node/src/Hydra/Chain/Direct/Tx.hs#L559
  • [ ] Optimistic removal of UTxO from the TinyWallet is problematic if an error happens down the line https://github.com/input-output-hk/hydra-poc/blob/c7c28d6618877ba8b64f244aefb47708586fd391/hydra-node/src/Hydra/Chain/Direct/Wallet.hs#L142
  • [ ] The ping hostnames are overlapping (i.e. everyone uses 0.0.0.0:5001 by default)

ch1bo avatar Sep 27 '22 10:09 ch1bo