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Integrate pallet_contracts gas with the weight system (#5712)

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Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>
Co-Authored-By: Sergei Pepyakin <sergei@parity.io>
This commit is contained in:
Alexander Theißen
2020-04-24 10:48:13 +02:00
committed by GitHub
parent e731817e24
commit 000c924b62
20 changed files with 386 additions and 680 deletions
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substrate/frame/contracts/src/wasm/code_cache.rs
+1 -30
View File
@@ -26,49 +26,20 @@
//! this guarantees that every instrumented contract code in cache cannot have the version equal to the current one.
//! Thus, before executing a contract it should be reinstrument with new schedule.
use crate::gas::{Gas, GasMeter, Token};
use crate::wasm::{prepare, runtime::Env, PrefabWasmModule};
use crate::{CodeHash, CodeStorage, PristineCode, Schedule, Trait};
use sp_std::prelude::*;
use sp_runtime::traits::{Hash, Bounded};
use sp_runtime::traits::Hash;
use frame_support::StorageMap;
/// Gas metering token that used for charging storing code into the code storage.
///
/// Specifies the code length in bytes.
#[cfg_attr(test, derive(Debug, PartialEq, Eq))]
#[derive(Copy, Clone)]
pub struct PutCodeToken(u32);
impl<T: Trait> Token<T> for PutCodeToken {
type Metadata = Schedule;
fn calculate_amount(&self, metadata: &Schedule) -> Gas {
metadata
.put_code_per_byte_cost
.checked_mul(self.0.into())
.unwrap_or_else(|| Bounded::max_value())
}
}
/// Put code in the storage. The hash of code is used as a key and is returned
/// as a result of this function.
///
/// This function instruments the given code and caches it in the storage.
pub fn save<T: Trait>(
original_code: Vec<u8>,
gas_meter: &mut GasMeter<T>,
schedule: &Schedule,
) -> Result<CodeHash<T>, &'static str> {
// The first time instrumentation is on the user. However, consequent reinstrumentation
// due to the schedule changes is on governance system.
if gas_meter
.charge(schedule, PutCodeToken(original_code.len() as u32))
.is_out_of_gas()
{
return Err("there is not enough gas for storing the code");
}
let prefab_module = prepare::prepare_contract::<Env>(&original_code, schedule)?;
let code_hash = T::Hashing::hash(&original_code);