The hydra node can publish hydra scripts via blockfrost using --blockfrost

[noonio]

Why

As Hydra moves towards using Blockfrost as a chain layer, we need to extend the functionality to publish Hydra scripts via the Blockfrost API. This follows up on #1305 and builds upon our initial exploration on #1631.

What

Introduce the capability to publish Hydra scripts using Blockfrost as follows:

mkdir -p blockfrost-demo/
curl localhost:4001/protocol-parameters > blockfrost-demo/protocol-parameters.json

function publishScripts() {
  nix run .#hydra-node -- publish-scripts \
    --blockfrost "file_path_project_token_hash" \
    --cardano-signing-key blockfrost-demo/wallet.sk
}

export HYDRA_SCRIPTS_TX_ID_ON_BLOCKFROST="$(publishScripts)"

How

Taking the inception spike as inspiration, we need to:

• Refactor PublishOptions to support Blockfrost options:

  newtype PublishOptions = PublishOptions
    { publishChainConfig :: ChainConfig }
    deriving stock (Show, Eq)
  
  data ChainConfig
    = Offline OfflineChainConfig
    | Direct DirectChainConfig
    | Blockfrost BlockfrostChainConfig
    deriving stock (Eq, Show, Generic)

The path to the Blockfrost project token hash will be passed as part of these new options.

• Extend hydra-node/Main.hs to support publishing scripts using the modules above.

[v0d1ch]

Just to double check - is this issue not suppose to include adding a new chain layer for blockfrost? We should only extend hydra-node/Main.hs and not do anything in Run.hs related to new addition of BlockfrostConfig in ChainConfig type and we should have another issue to add new chain component? (like Hydra.Chain.Direct but for blockfrost)

[ch1bo]

Just to double check - is this issue not suppose to include adding a new chain layer for blockfrost? We should only extend hydra-node/Main.hs and not do anything in Run.hs related to new addition of BlockfrostConfig in ChainConfig type and we should have another issue to add new chain component? (like Hydra.Chain.Direct but for blockfrost)

Yes, this is only about publishing scripts, which is not integrated with the headlogic / Chain interface. The full integration should happen in the "Blockfrost chain layer" issue.