feat: script by hash reducer #25
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| use pallas::crypto::hash::{Hash, Hasher}; | ||
| use pallas::ledger::primitives::alonzo; | ||
| use pallas::ledger::primitives::alonzo::PlutusScript; | ||
| use serde::Deserialize; | ||
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| use crate::{crosscut, model}; | ||
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| #[derive(Deserialize)] | ||
| pub struct Config { | ||
| pub key_prefix: Option<String>, | ||
| pub filter: Option<Vec<String>>, | ||
| } | ||
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| pub struct Reducer { | ||
| config: Config, | ||
| address_hrp: String, | ||
| } | ||
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| impl Reducer { | ||
| fn send_set_add( | ||
| &mut self, | ||
| slot: u64, | ||
| hash: Hash<28>, | ||
| cbor: PlutusScript, | ||
| output: &mut super::OutputPort, | ||
| ) -> Result<(), gasket::error::Error> { | ||
| let key = format!("{}", hash); | ||
|
There was a problem hiding this comment. it looks like you are ignoring a configuration key (prefix) |
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| let member = hex::encode::<Vec<u8>>(cbor.into()); | ||
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| let crdt = model::CRDTCommand::LastWriteWins(key, member, slot); | ||
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| output.send(gasket::messaging::Message::from(crdt))?; | ||
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| Ok(()) | ||
| } | ||
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| fn reduce_alonzo_compatible_tx( | ||
| &mut self, | ||
| slot: u64, | ||
| tx: &alonzo::TransactionWitnessSet, | ||
| output: &mut super::OutputPort, | ||
| ) -> Result<(), gasket::error::Error> { | ||
| if let Some(plutus_scripts) = &tx.plutus_script { | ||
|
There was a problem hiding this comment. Your code is iterative but actually the way one should write this IMHO is that rather than returning OK at the end, one should rather map and collect all results and return them from this function. Now I am by far a Rust noob but perhaps Rust will take a first item out of all results or evaluate lazily and stop execution and return result on first error. @scarmuega do you agree? There was a problem hiding this comment. Yes it return result on first error if we use the There was a problem hiding this comment. Interesting operator... this is what I thought but you confirmed it. Powerful and confusing operator. |
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| for scr in plutus_scripts.iter() { | ||
| let hash = Hasher::<224>::hash_cbor(scr); | ||
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| self.send_set_add(slot, hash, scr.clone(), output)?; | ||
| } | ||
| } | ||
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| Ok(()) | ||
| } | ||
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| pub fn reduce_block( | ||
| &mut self, | ||
| block: &model::MultiEraBlock, | ||
| output: &mut super::OutputPort, | ||
| ) -> Result<(), gasket::error::Error> { | ||
| match block { | ||
| model::MultiEraBlock::Byron(_) => Ok(()), | ||
| model::MultiEraBlock::AlonzoCompatible(x) => { | ||
| x.1.transaction_witness_sets.iter().try_for_each(|tx| { | ||
| self.reduce_alonzo_compatible_tx(x.1.header.header_body.slot, tx, output) | ||
| }) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| impl Config { | ||
| pub fn plugin(self, chain: &crosscut::ChainWellKnownInfo) -> super::Reducer { | ||
| let reducer = Reducer { | ||
| config: self, | ||
| address_hrp: chain.address_hrp.clone(), | ||
| }; | ||
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| super::Reducer::PlutusScriptByHash(reducer) | ||
| } | ||
| } | ||
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I don't think you need address_hrp for anything, probably copy and paste.