Add support for parsing Shelley genesis blocks #331
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| pub decentralisation_param: Fraction, | ||
| pub e_max: u64, | ||
| pub extra_entropy: ShelleyGenesisExtraEntropy, | ||
| pub key_deposit: u64, |
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maybe some of these could be Coin when relevant? It's still just an alias but it would be consistent with the rest of the protocol param structs.
| } | ||
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| pub fn parse_genesis_data<R: Read>(json: R) -> Result<config::ShelleyGenesisData, GenesisJSONError> { | ||
| let data_value: serde_json::Value = serde_json::from_reader(json)?; |
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Why the clone? I don't see it used anywhere else.
| ipv6 | ||
| )); | ||
| }, | ||
| _ => panic!("Only single host address relays are supported in cardano-node Relay JSON parsing") |
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If we're going to panic here it'd be good to say so in the function comment.
Edit: I read the comment on RelayTypeMap saying you couldn't even find JSON for other types so maybe this is okay.
| #[derive(Serialize, Deserialize, Debug)] | ||
| pub struct ShelleyGenesisCredential { | ||
| // for some reason there actually is a space in the JSON key emitted by the Haskell node | ||
| #[serde(rename = "key hash")] |
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It looks like cardano-node changed it so that both key hash and keyHash are accepted, so we have to handle both those possibilities here as well. Not sure if Serde has an option to enable 2 different ways to represent a field in JSON
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@SebastienGllmt You can use #[serde(alias = "keyHash")]
It can even be defined multiple times.
example:
#[derive(serde::Serialize, serde::Deserialize, Debug)]
pub struct Foo {
#[serde(alias = "KeyHash")]
#[serde(alias = "keyHash")]
key_hash: String,
}
fn main() {
let jsons = [
"{ \"key_hash\": \"default\" }",
"{ \"keyHash\": \"lowerCamelCase\" }",
"{ \"KeyHash\": \"UpperCamelCase\" }",
"{ \"keyhash\": \"should not parse\" }",
];
for json in jsons {
let foo: Result<Foo, _> = serde_json::from_str(json);
println!("{json} -> {foo:?}");
}
}The first 3 are all accepted. First by it being the field name, and the next 2 for the alias = marker.
Running:
{ "key_hash": "default" } -> Ok(Foo { key_hash: "default" })
{ "keyHash": "lowerCamelCase" } -> Ok(Foo { key_hash: "lowerCamelCase" })
{ "KeyHash": "UpperCamelCase" } -> Ok(Foo { key_hash: "UpperCamelCase" })
{ "keyhash": "should not parse" } -> Err(Error("missing field `key_hash`", line: 1, column: 33))
* Add alias for `ShelleyGenesisCredential::keyHash` to account for cardano-node json format * Remove unnecessary clone() * Change `u64` to `Coin` when appropriate in Genesis types * ran cargo fmt
* Add support for parsing Shelley genesis blocks * Genesis keyHash alias + minor fixes * Add alias for `ShelleyGenesisCredential::keyHash` to account for cardano-node json format * Remove unnecessary clone() * Change `u64` to `Coin` when appropriate in Genesis types * ran cargo fmt * Update Genesis parsing for changes in #340 --------- Co-authored-by: rooooooooob <[email protected]> Co-authored-by: rooooooooob <[email protected]>
This is required as part of dcSpark/carp#187
Notably, the Shelley genesis block has an
intialFundsfield and astakingfield which essentially allows having stake pools and shelley-era keys as part of the genesis block for newly spun up networks which is useful for testing