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118 changes: 118 additions & 0 deletions
118
contracts/dao-action-verifier/src/derived_dao_action_data.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| //! Derive dao action from tx. | ||
| use core::cmp; | ||
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|
||
| use alloc::collections::BTreeMap; | ||
| use ckb_dao_cobuild_schemas::{DaoActionData, Deposit}; | ||
| use ckb_std::{ | ||
| ckb_constants::Source, | ||
| ckb_types::{bytes::Bytes, packed, prelude::*}, | ||
| high_level::{load_cell, load_cell_data, QueryIter}, | ||
| }; | ||
|
|
||
| use crate::{ | ||
| constants::{DAO_DEPOSIT_DATA, DAO_TYPE_SCRIPT}, | ||
| error::Error, | ||
| error_code::ErrorCode, | ||
| trace_error, | ||
| }; | ||
|
|
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| #[derive(Debug, Eq, PartialEq)] | ||
| pub struct DepositKey { | ||
| to: Bytes, | ||
| amount: Bytes, | ||
| } | ||
|
|
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| #[derive(Default, Debug)] | ||
| pub struct DerivedDaoActionData { | ||
| deposits: BTreeMap<DepositKey, usize>, | ||
| } | ||
|
|
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| fn is_deposit_cell(index: usize, source: Source) -> bool { | ||
| load_cell_data(index, source) | ||
| .map(|data| data.as_ref() == DAO_DEPOSIT_DATA) | ||
| .unwrap_or(false) | ||
| } | ||
|
|
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| impl DerivedDaoActionData { | ||
| /// Derive dao action from the tx. | ||
| pub fn derive() -> Self { | ||
| #[allow(clippy::mutable_key_type)] | ||
| let deposits = QueryIter::new(load_cell, Source::Output) | ||
| .enumerate() | ||
| .filter(|(index, cell_output)| { | ||
| cell_output.type_().as_slice() == DAO_TYPE_SCRIPT | ||
| && is_deposit_cell(*index, Source::Output) | ||
| }) | ||
| .map(|(index, cell_output)| ((&cell_output).into(), index)) | ||
| .collect(); | ||
|
|
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| Self { deposits } | ||
| } | ||
|
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| /// Ensure all derived operations have been found in tx. | ||
| pub fn complete(self) -> Result<(), Error> { | ||
| match self.deposits.into_values().next() { | ||
| Some(index) => Err(trace_error!( | ||
| ErrorCode::NotCoverred, | ||
| "tx output {} not coverred by dao action", | ||
| index | ||
| )), | ||
| None => Ok(()), | ||
| } | ||
| } | ||
|
|
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| pub fn verify(&mut self, dao_action_data: DaoActionData) -> Result<(), Error> { | ||
| for deposit in dao_action_data.deposits().into_iter() { | ||
| self.verify_deposit(deposit)?; | ||
| } | ||
|
|
||
| Ok(()) | ||
| } | ||
|
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| fn verify_deposit(&mut self, deposit: Deposit) -> Result<(), Error> { | ||
| match self.deposits.remove(&(&deposit).into()) { | ||
| Some(_) => Ok(()), | ||
| None => Err(trace_error!( | ||
| ErrorCode::NotFound, | ||
| "deposit not found in tx: {}", | ||
| deposit | ||
| )), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl From<&packed::CellOutput> for DepositKey { | ||
| fn from(value: &packed::CellOutput) -> Self { | ||
| Self { | ||
| to: value.lock().as_bytes(), | ||
| amount: value.capacity().as_bytes(), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl From<&Deposit> for DepositKey { | ||
| fn from(value: &Deposit) -> Self { | ||
| Self { | ||
| to: value.to().as_bytes(), | ||
| amount: value.amount().as_bytes(), | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl PartialOrd for DepositKey { | ||
| fn partial_cmp(&self, other: &Self) -> Option<cmp::Ordering> { | ||
| match self.to.partial_cmp(&other.to) { | ||
| Some(cmp::Ordering::Equal) => self.amount.partial_cmp(&other.amount), | ||
| other => other, | ||
| } | ||
| } | ||
| } | ||
|
|
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| impl Ord for DepositKey { | ||
| fn cmp(&self, other: &Self) -> cmp::Ordering { | ||
| match self.to.cmp(&other.to) { | ||
| cmp::Ordering::Equal => self.amount.cmp(&other.amount), | ||
| other => other, | ||
| } | ||
| } | ||
| } |
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